#include "assets/image_format.h"
#include "assets/image_metadata.h"
#include "assets/image_pixels.h"
#include "assets/ppi_header.h"
#include "document/document.h"
#include "document/ppi_export.h"
#include "document/ppi_import.h"
#include "foundation/parse.h"
#include "foundation/result.h"
#include "paint/stroke.h"
#include "paint/stroke_script.h"
#include "renderer_api/recording_renderer.h"
#include "ui_core/layout_xml.h"

#include <algorithm>
#include <array>
#include <charconv>
#include <cmath>
#include <cstdint>
#include <fstream>
#include <iostream>
#include <iterator>
#include <system_error>
#include <span>
#include <string>
#include <string_view>
#include <vector>

namespace {

struct DocumentArgs {
    std::uint32_t width = 0;
    std::uint32_t height = 0;
    std::uint32_t layers = 1;
    std::uint32_t frames = 1;
    std::uint32_t frame_duration_ms = 100;
};

struct SaveProjectArgs {
    std::string path;
    std::uint32_t width = 0;
    std::uint32_t height = 0;
    std::string layer_name = "Ink";
    float layer_opacity = 1.0F;
    std::uint32_t blend_mode = 0;
    bool alpha_locked = false;
    bool visible = true;
    std::uint32_t layers = 1;
    std::uint32_t frames = 1;
    std::uint32_t frame_duration_ms = 100;
    bool include_test_face_payload = false;
    std::uint32_t payload_layer = 0;
    std::uint32_t payload_frame = 0;
};

struct SaveDocumentProjectArgs {
    std::string path;
    std::uint32_t width = 64;
    std::uint32_t height = 32;
};

struct InspectImageArgs {
    std::string path;
};

struct ImportImageArgs {
    std::string path;
    std::uint32_t document_width = 0;
    std::uint32_t document_height = 0;
    std::uint32_t face = 0;
    std::uint32_t x = 0;
    std::uint32_t y = 0;
};

struct ExportImageArgs {
    std::string path;
    std::uint32_t width = 2;
    std::uint32_t height = 2;
};

struct ParseLayoutArgs {
    std::string path;
};

struct InspectProjectArgs {
    std::string path;
};

struct SimulateStrokeArgs {
    std::uint32_t x1 = 0;
    std::uint32_t y1 = 0;
    std::uint32_t x2 = 0;
    std::uint32_t y2 = 0;
    std::uint32_t spacing = 1;
};

struct SimulateStrokeScriptArgs {
    std::string path;
};

struct ApplyStrokeScriptArgs {
    std::string path;
    std::string output_path;
    std::uint32_t width = 64;
    std::uint32_t height = 32;
};

struct SimulateDocumentEditsArgs {
    std::uint32_t width = 128;
    std::uint32_t height = 64;
};

struct SimulateImageImportArgs {
    std::uint32_t width = 64;
    std::uint32_t height = 32;
};

struct SimulateDocumentExportArgs {
    std::uint32_t width = 64;
    std::uint32_t height = 32;
};

struct SimulateDocumentHistoryArgs {
    std::uint32_t width = 64;
    std::uint32_t height = 32;
    std::uint32_t history_entries = 4;
};

struct RecordRenderArgs {
    std::uint32_t width = 64;
    std::uint32_t height = 32;
};

void print_error(std::string_view command, std::string_view message)
{
    std::cout << "{\"ok\":false,\"command\":\"" << command
              << "\",\"error\":\"" << message << "\"}\n";
}

std::span<const std::byte> transparent_png_1x1_bytes() noexcept
{
    static constexpr std::array<std::byte, 68> transparent_png_1x1 {
        std::byte { 0x89 }, std::byte { 0x50 }, std::byte { 0x4e }, std::byte { 0x47 },
        std::byte { 0x0d }, std::byte { 0x0a }, std::byte { 0x1a }, std::byte { 0x0a },
        std::byte { 0x00 }, std::byte { 0x00 }, std::byte { 0x00 }, std::byte { 0x0d },
        std::byte { 0x49 }, std::byte { 0x48 }, std::byte { 0x44 }, std::byte { 0x52 },
        std::byte { 0x00 }, std::byte { 0x00 }, std::byte { 0x00 }, std::byte { 0x01 },
        std::byte { 0x00 }, std::byte { 0x00 }, std::byte { 0x00 }, std::byte { 0x01 },
        std::byte { 0x08 }, std::byte { 0x06 }, std::byte { 0x00 }, std::byte { 0x00 },
        std::byte { 0x00 }, std::byte { 0x1f }, std::byte { 0x15 }, std::byte { 0xc4 },
        std::byte { 0x89 }, std::byte { 0x00 }, std::byte { 0x00 }, std::byte { 0x00 },
        std::byte { 0x0b }, std::byte { 0x49 }, std::byte { 0x44 }, std::byte { 0x41 },
        std::byte { 0x54 }, std::byte { 0x78 }, std::byte { 0x9c }, std::byte { 0x63 },
        std::byte { 0x60 }, std::byte { 0x00 }, std::byte { 0x02 }, std::byte { 0x00 },
        std::byte { 0x00 }, std::byte { 0x05 }, std::byte { 0x00 }, std::byte { 0x01 },
        std::byte { 0x7a }, std::byte { 0x5e }, std::byte { 0xab }, std::byte { 0x3f },
        std::byte { 0x00 }, std::byte { 0x00 }, std::byte { 0x00 }, std::byte { 0x00 },
        std::byte { 0x49 }, std::byte { 0x45 }, std::byte { 0x4e }, std::byte { 0x44 },
        std::byte { 0xae }, std::byte { 0x42 }, std::byte { 0x60 }, std::byte { 0x82 },
    };
    return transparent_png_1x1;
}

std::string json_escape(std::string_view value)
{
    constexpr char hex[] = "0123456789abcdef";
    std::string escaped;
    escaped.reserve(value.size());
    for (const unsigned char ch : value) {
        switch (ch) {
        case '"':
            escaped += "\\\"";
            break;
        case '\\':
            escaped += "\\\\";
            break;
        case '\b':
            escaped += "\\b";
            break;
        case '\f':
            escaped += "\\f";
            break;
        case '\n':
            escaped += "\\n";
            break;
        case '\r':
            escaped += "\\r";
            break;
        case '\t':
            escaped += "\\t";
            break;
        default:
            if (ch < 0x20U) {
                escaped += "\\u00";
                escaped.push_back(hex[(ch >> 4U) & 0x0fU]);
                escaped.push_back(hex[ch & 0x0fU]);
            } else {
                escaped.push_back(static_cast<char>(ch));
            }
            break;
        }
    }
    return escaped;
}

pp::foundation::Result<float> parse_float_arg(std::string_view text)
{
    float value = 0.0F;
    const auto* begin = text.data();
    const auto* end = begin + text.size();
    const auto [ptr, ec] = std::from_chars(begin, end, value);
    if (ec != std::errc {} || ptr != end) {
        return pp::foundation::Result<float>::failure(
            pp::foundation::Status::invalid_argument("invalid floating-point value"));
    }

    return pp::foundation::Result<float>::success(value);
}

void print_help()
{
    std::cout
        << "pano_cli commands:\n"
        << "  apply-stroke-script --path FILE --output FILE [--width N] [--height N]\n"
        << "  create-document --width N --height N [--layers N] [--frames N] [--frame-duration-ms N]\n"
        << "  export-image --path FILE [--width N] [--height N]\n"
        << "  inspect-image --path FILE\n"
        << "  import-image --path FILE [--document-width N] [--document-height N] [--face N] [--x N] [--y N]\n"
        << "  inspect-project --path FILE\n"
        << "  load-project --path FILE\n"
        << "  parse-layout --path FILE\n"
        << "  record-render [--width N] [--height N]\n"
        << "  save-document-project --path FILE [--width N] [--height N]\n"
        << "  save-project --path FILE --width N --height N [--layer-name NAME] [--layer-opacity N] [--blend-mode N] [--alpha-locked] [--hidden] [--layers N] [--frames N] [--frame-duration-ms N] [--include-test-face-payload] [--payload-layer N] [--payload-frame N]\n"
        << "  simulate-document-edits [--width N] [--height N]\n"
        << "  simulate-document-export [--width N] [--height N]\n"
        << "  simulate-document-history [--width N] [--height N] [--history N]\n"
        << "  simulate-image-import [--width N] [--height N]\n"
        << "  simulate-stroke --x1 N --y1 N --x2 N --y2 N [--spacing N]\n"
        << "  simulate-stroke-script --path FILE\n"
        << "  --help\n";
}

pp::foundation::Status parse_document_args(int argc, char** argv, DocumentArgs& args)
{
    for (int i = 2; i < argc; ++i) {
        const std::string_view key(argv[i]);
        if (key == "--width" || key == "--height" || key == "--layers" || key == "--frames"
            || key == "--frame-duration-ms") {
            if (i + 1 >= argc) {
                return pp::foundation::Status::invalid_argument("missing value for option");
            }

            const auto value = pp::foundation::parse_u32(argv[++i]);
            if (!value) {
                return value.status();
            }

            if (key == "--width") {
                args.width = value.value();
            } else if (key == "--height") {
                args.height = value.value();
            } else if (key == "--layers") {
                args.layers = value.value();
            } else if (key == "--frames") {
                args.frames = value.value();
            } else {
                args.frame_duration_ms = value.value();
            }
        } else {
            return pp::foundation::Status::invalid_argument("unknown option");
        }
    }

    if (args.width == 0 || args.height == 0) {
        return pp::foundation::Status::invalid_argument("width and height must be greater than zero");
    }

    if (args.layers == 0) {
        return pp::foundation::Status::invalid_argument("layer count must be greater than zero");
    }

    if (args.frames == 0) {
        return pp::foundation::Status::invalid_argument("frame count must be greater than zero");
    }

    if (args.frame_duration_ms == 0) {
        return pp::foundation::Status::invalid_argument("frame duration must be greater than zero");
    }

    return pp::foundation::Status::success();
}

int create_document(int argc, char** argv)
{
    DocumentArgs args;
    const auto status = parse_document_args(argc, argv, args);
    if (!status.ok()) {
        print_error("create-document", status.message);
        return 2;
    }

    const auto document_result = pp::document::CanvasDocument::create(
        pp::document::DocumentConfig {
            .width = args.width,
            .height = args.height,
            .layer_count = args.layers,
        });
    if (!document_result) {
        print_error("create-document", document_result.status().message);
        return 2;
    }

    auto document = document_result.value();
    const auto duration_status = document.set_frame_duration(0, args.frame_duration_ms);
    if (!duration_status.ok()) {
        print_error("create-document", duration_status.message);
        return 2;
    }

    for (std::uint32_t i = 1; i < args.frames; ++i) {
        const auto added_frame = document.add_frame(args.frame_duration_ms);
        if (!added_frame) {
            print_error("create-document", added_frame.status().message);
            return 2;
        }
    }

    std::cout << "{\"ok\":true,\"command\":\"create-document\",\"document\":{"
              << "\"width\":" << document.width()
              << ",\"height\":" << document.height()
              << ",\"layers\":" << document.layers().size()
              << ",\"activeLayer\":" << document.active_layer_index()
              << ",\"frames\":" << document.frames().size()
              << ",\"activeFrame\":" << document.active_frame_index()
              << ",\"animationDurationMs\":" << document.animation_duration_ms()
              << "}}\n";
    return 0;
}

pp::foundation::Result<pp::document::CanvasDocument> create_export_sample_document(
    std::uint32_t width,
    std::uint32_t height)
{
    const std::vector<std::uint8_t> red_pixel { 255, 0, 0, 255 };
    const std::vector<std::uint8_t> blue_pixel { 0, 0, 255, 128 };
    const pp::document::AnimationFrame root_frames[] {
        { .duration_ms = 100, .face_pixels = {} },
        { .duration_ms = 250, .face_pixels = {} },
    };
    const pp::document::AnimationFrame base_frames[] {
        {
            .duration_ms = 100,
            .face_pixels = {
                pp::document::LayerFacePixels {
                    .face_index = 0,
                    .x = 2,
                    .y = 3,
                    .width = 1,
                    .height = 1,
                    .rgba8 = red_pixel,
                },
            },
        },
        { .duration_ms = 250, .face_pixels = {} },
    };
    const pp::document::AnimationFrame paint_frames[] {
        {
            .duration_ms = 333,
            .face_pixels = {
                pp::document::LayerFacePixels {
                    .face_index = 5,
                    .x = 4,
                    .y = 5,
                    .width = 1,
                    .height = 1,
                    .rgba8 = blue_pixel,
                },
            },
        },
    };
    const pp::document::DocumentLayerConfig layers[] {
        {
            .name = "Base",
            .visible = true,
            .alpha_locked = false,
            .opacity = 1.0F,
            .blend_mode = pp::paint::BlendMode::normal,
            .frames = std::span<const pp::document::AnimationFrame>(base_frames, 2),
        },
        {
            .name = "Paint",
            .visible = false,
            .alpha_locked = true,
            .opacity = 0.5F,
            .blend_mode = pp::paint::BlendMode::overlay,
            .frames = std::span<const pp::document::AnimationFrame>(paint_frames, 1),
        },
    };

    return pp::document::CanvasDocument::create_from_snapshot(
        pp::document::DocumentSnapshotConfig {
            .width = width,
            .height = height,
            .layers = std::span<const pp::document::DocumentLayerConfig>(layers, 2),
            .frames = std::span<const pp::document::AnimationFrame>(root_frames, 2),
            .selection_masks = {},
        });
}

pp::foundation::Status parse_save_document_project_args(
    int argc,
    char** argv,
    SaveDocumentProjectArgs& args)
{
    for (int i = 2; i < argc; ++i) {
        const std::string_view key(argv[i]);
        if (key == "--path") {
            if (i + 1 >= argc) {
                return pp::foundation::Status::invalid_argument("missing value for option");
            }
            args.path = argv[++i];
        } else if (key == "--width" || key == "--height") {
            if (i + 1 >= argc) {
                return pp::foundation::Status::invalid_argument("missing value for option");
            }

            const auto value = pp::foundation::parse_u32(argv[++i]);
            if (!value) {
                return value.status();
            }

            if (key == "--width") {
                args.width = value.value();
            } else {
                args.height = value.value();
            }
        } else {
            return pp::foundation::Status::invalid_argument("unknown option");
        }
    }

    if (args.path.empty()) {
        return pp::foundation::Status::invalid_argument("path must not be empty");
    }

    if (args.width < 8 || args.height < 8) {
        return pp::foundation::Status::out_of_range("width and height must be at least 8 for document export");
    }

    return pp::foundation::Status::success();
}

int save_document_project(int argc, char** argv)
{
    SaveDocumentProjectArgs args;
    const auto status = parse_save_document_project_args(argc, argv, args);
    if (!status.ok()) {
        print_error("save-document-project", status.message);
        return 2;
    }

    const auto document = create_export_sample_document(args.width, args.height);
    if (!document) {
        print_error("save-document-project", document.status().message);
        return 2;
    }

    const auto exported = pp::document::export_ppi_project_document(document.value());
    if (!exported) {
        print_error("save-document-project", exported.status().message);
        return 2;
    }

    std::ofstream stream(args.path, std::ios::binary);
    if (!stream) {
        print_error("save-document-project", "project file could not be opened for writing");
        return 2;
    }

    const auto& bytes = exported.value();
    stream.write(reinterpret_cast<const char*>(bytes.data()), static_cast<std::streamsize>(bytes.size()));
    if (!stream) {
        print_error("save-document-project", "project file could not be written");
        return 2;
    }

    const auto decoded = pp::assets::decode_ppi_project_images(bytes);
    if (!decoded) {
        print_error("save-document-project", decoded.status().message);
        return 2;
    }

    std::cout << "{\"ok\":true,\"command\":\"save-document-project\""
              << ",\"path\":\"" << json_escape(args.path) << "\""
              << ",\"format\":\"ppi\""
              << ",\"bytes\":" << bytes.size()
              << ",\"document\":{\"width\":" << document.value().width()
              << ",\"height\":" << document.value().height()
              << ",\"layers\":" << document.value().layers().size()
              << ",\"frames\":" << document.value().frames().size()
              << ",\"facePayloads\":" << document.value().face_pixel_payload_count()
              << "},\"export\":{\"dirtyFaces\":" << decoded.value().project.body.summary.dirty_face_count
              << ",\"rgbaFacePayloads\":" << decoded.value().project.body.summary.rgba_face_payload_count
              << ",\"compressedBytes\":" << decoded.value().project.body.summary.compressed_face_bytes
              << "}}\n";
    return 0;
}

pp::foundation::Status parse_save_project_args(int argc, char** argv, SaveProjectArgs& args)
{
    for (int i = 2; i < argc; ++i) {
        const std::string_view key(argv[i]);
        if (key == "--path" || key == "--layer-name") {
            if (i + 1 >= argc) {
                return pp::foundation::Status::invalid_argument("missing value for option");
            }

            if (key == "--path") {
                args.path = argv[++i];
            } else {
                args.layer_name = argv[++i];
            }
        } else if (key == "--layer-opacity") {
            if (i + 1 >= argc) {
                return pp::foundation::Status::invalid_argument("missing value for option");
            }

            const auto value = parse_float_arg(argv[++i]);
            if (!value) {
                return value.status();
            }
            args.layer_opacity = value.value();
        } else if (key == "--alpha-locked") {
            args.alpha_locked = true;
        } else if (key == "--hidden") {
            args.visible = false;
        } else if (key == "--width" || key == "--height" || key == "--layers" || key == "--frames"
            || key == "--blend-mode" || key == "--frame-duration-ms" || key == "--payload-layer"
            || key == "--payload-frame") {
            if (i + 1 >= argc) {
                return pp::foundation::Status::invalid_argument("missing value for option");
            }

            const auto value = pp::foundation::parse_u32(argv[++i]);
            if (!value) {
                return value.status();
            }

            if (key == "--width") {
                args.width = value.value();
            } else if (key == "--height") {
                args.height = value.value();
            } else if (key == "--layers") {
                args.layers = value.value();
            } else if (key == "--frames") {
                args.frames = value.value();
            } else if (key == "--blend-mode") {
                args.blend_mode = value.value();
            } else if (key == "--payload-layer") {
                args.payload_layer = value.value();
            } else if (key == "--payload-frame") {
                args.payload_frame = value.value();
            } else {
                args.frame_duration_ms = value.value();
            }
        } else if (key == "--include-test-face-payload") {
            args.include_test_face_payload = true;
        } else {
            return pp::foundation::Status::invalid_argument("unknown option");
        }
    }

    if (args.path.empty()) {
        return pp::foundation::Status::invalid_argument("path must not be empty");
    }

    if (args.width == 0 || args.height == 0) {
        return pp::foundation::Status::invalid_argument("width and height must be greater than zero");
    }

    if (args.layer_name.empty()) {
        return pp::foundation::Status::invalid_argument("layer name must not be empty");
    }

    if (args.layer_opacity < 0.0F || args.layer_opacity > 1.0F) {
        return pp::foundation::Status::out_of_range("layer opacity must be in the range [0, 1]");
    }

    if (args.blend_mode > 4U) {
        return pp::foundation::Status::out_of_range("blend mode must be in the range [0, 4]");
    }

    if (args.layers == 0) {
        return pp::foundation::Status::invalid_argument("layer count must be greater than zero");
    }

    if (args.frames == 0) {
        return pp::foundation::Status::invalid_argument("frame count must be greater than zero");
    }

    if (args.frame_duration_ms == 0) {
        return pp::foundation::Status::invalid_argument("frame duration must be greater than zero");
    }

    if (args.include_test_face_payload && args.payload_layer >= args.layers) {
        return pp::foundation::Status::out_of_range("payload layer must be inside the generated layer list");
    }

    if (args.include_test_face_payload && args.payload_frame >= args.frames) {
        return pp::foundation::Status::out_of_range("payload frame must be inside the generated frame list");
    }

    if (!args.include_test_face_payload && (args.payload_layer != 0 || args.payload_frame != 0)) {
        return pp::foundation::Status::invalid_argument(
            "payload layer/frame options require --include-test-face-payload");
    }

    return pp::foundation::Status::success();
}

int save_project(int argc, char** argv)
{
    SaveProjectArgs args;
    const auto status = parse_save_project_args(argc, argv, args);
    if (!status.ok()) {
        print_error("save-project", status.message);
        return 2;
    }

    const auto test_payload = transparent_png_1x1_bytes();
    const pp::assets::PpiDirtyFacePayloadConfig dirty_faces[] {
        {
            .layer_index = args.payload_layer,
            .frame_index = args.payload_frame,
            .face_index = 0,
            .x = 0,
            .y = 0,
            .width = 1,
            .height = 1,
            .png_rgba8 = test_payload,
        },
    };
    const auto project = pp::assets::create_minimal_ppi_project(pp::assets::PpiMinimalProjectConfig {
        .width = args.width,
        .height = args.height,
        .layer_name = args.layer_name,
        .layer_metadata = pp::assets::PpiLayerMetadataConfig {
            .opacity = args.layer_opacity,
            .blend_mode = args.blend_mode,
            .alpha_locked = args.alpha_locked,
            .visible = args.visible,
        },
        .layer_count = args.layers,
        .frame_count = args.frames,
        .frame_duration_ms = args.frame_duration_ms,
        .dirty_faces = args.include_test_face_payload
            ? std::span<const pp::assets::PpiDirtyFacePayloadConfig>(dirty_faces, 1)
            : std::span<const pp::assets::PpiDirtyFacePayloadConfig>(),
    });
    if (!project) {
        print_error("save-project", project.status().message);
        return 2;
    }

    std::ofstream stream(args.path, std::ios::binary);
    if (!stream) {
        print_error("save-project", "project file could not be opened for writing");
        return 2;
    }

    const auto& bytes = project.value();
    stream.write(reinterpret_cast<const char*>(bytes.data()), static_cast<std::streamsize>(bytes.size()));
    if (!stream) {
        print_error("save-project", "project file could not be written");
        return 2;
    }

    std::cout << "{\"ok\":true,\"command\":\"save-project\""
              << ",\"path\":\"" << json_escape(args.path) << "\""
              << ",\"format\":\"ppi\""
              << ",\"bytes\":" << bytes.size()
              << ",\"document\":{\"width\":" << args.width
              << ",\"height\":" << args.height
              << ",\"layers\":" << args.layers
              << ",\"frames\":" << args.frames
              << ",\"layerName\":\"" << json_escape(args.layer_name) << "\""
              << ",\"layerOpacity\":" << args.layer_opacity
              << ",\"blendMode\":" << args.blend_mode
              << ",\"alphaLocked\":" << (args.alpha_locked ? "true" : "false")
              << ",\"visible\":" << (args.visible ? "true" : "false")
              << ",\"frameDurationMs\":" << args.frame_duration_ms
              << ",\"facePayloads\":" << (args.include_test_face_payload ? 1 : 0)
              << ",\"payloadLayer\":" << args.payload_layer
              << ",\"payloadFrame\":" << args.payload_frame
              << "}}\n";
    return 0;
}

pp::foundation::Status parse_inspect_image_args(int argc, char** argv, InspectImageArgs& args)
{
    for (int i = 2; i < argc; ++i) {
        const std::string_view key(argv[i]);
        if (key == "--path") {
            if (i + 1 >= argc) {
                return pp::foundation::Status::invalid_argument("missing value for option");
            }

            args.path = argv[++i];
        } else {
            return pp::foundation::Status::invalid_argument("unknown option");
        }
    }

    if (args.path.empty()) {
        return pp::foundation::Status::invalid_argument("path must not be empty");
    }

    return pp::foundation::Status::success();
}

int inspect_image(int argc, char** argv)
{
    InspectImageArgs args;
    const auto status = parse_inspect_image_args(argc, argv, args);
    if (!status.ok()) {
        print_error("inspect-image", status.message);
        return 2;
    }

    std::ifstream stream(args.path, std::ios::binary);
    if (!stream) {
        print_error("inspect-image", "image file could not be opened");
        return 2;
    }

    const std::vector<char> chars {
        std::istreambuf_iterator<char>(stream),
        std::istreambuf_iterator<char>()
    };
    const auto* data = reinterpret_cast<const std::byte*>(chars.data());
    const auto format = pp::assets::detect_image_format(std::span<const std::byte>(data, chars.size()));
    if (!format) {
        print_error("inspect-image", format.status().message);
        return 2;
    }

    pp::foundation::Result<pp::assets::ImageMetadata> metadata =
        pp::foundation::Result<pp::assets::ImageMetadata>::failure(
            pp::foundation::Status::invalid_argument("image metadata is unavailable"));
    if (format.value() == pp::assets::ImageFormat::png) {
        metadata = pp::assets::parse_png_metadata(std::span<const std::byte>(data, chars.size()));
        if (!metadata) {
            print_error("inspect-image", metadata.status().message);
            return 2;
        }
    }

    std::cout << "{\"ok\":true,\"command\":\"inspect-image\",\"format\":\""
              << pp::assets::image_format_name(format.value())
              << "\",\"bytes\":" << chars.size();

    if (metadata) {
        std::cout << ",\"metadata\":{\"width\":" << metadata.value().width
                  << ",\"height\":" << metadata.value().height
                  << ",\"bitDepth\":" << static_cast<int>(metadata.value().bit_depth)
                  << ",\"components\":" << static_cast<int>(metadata.value().components)
                  << ",\"colorType\":\"" << pp::assets::image_color_type_name(metadata.value().color_type)
                  << "\"}";
    } else {
        std::cout << ",\"metadata\":null";
    }

    std::cout << "}\n";
    return 0;
}

pp::foundation::Status parse_import_image_args(int argc, char** argv, ImportImageArgs& args)
{
    for (int i = 2; i < argc; ++i) {
        const std::string_view key(argv[i]);
        if (key == "--path") {
            if (i + 1 >= argc) {
                return pp::foundation::Status::invalid_argument("missing value for option");
            }

            args.path = argv[++i];
        } else if (key == "--document-width" || key == "--document-height"
            || key == "--face" || key == "--x" || key == "--y") {
            if (i + 1 >= argc) {
                return pp::foundation::Status::invalid_argument("missing value for option");
            }

            const auto value = pp::foundation::parse_u32(argv[++i]);
            if (!value) {
                return value.status();
            }

            if (key == "--document-width") {
                args.document_width = value.value();
            } else if (key == "--document-height") {
                args.document_height = value.value();
            } else if (key == "--face") {
                args.face = value.value();
            } else if (key == "--x") {
                args.x = value.value();
            } else {
                args.y = value.value();
            }
        } else {
            return pp::foundation::Status::invalid_argument("unknown option");
        }
    }

    if (args.path.empty()) {
        return pp::foundation::Status::invalid_argument("path must not be empty");
    }

    if ((args.document_width == 0) != (args.document_height == 0)) {
        return pp::foundation::Status::invalid_argument(
            "document width and height must both be omitted or both be greater than zero");
    }

    return pp::foundation::Status::success();
}

int import_image(int argc, char** argv)
{
    ImportImageArgs args;
    const auto status = parse_import_image_args(argc, argv, args);
    if (!status.ok()) {
        print_error("import-image", status.message);
        return 2;
    }

    std::ifstream stream(args.path, std::ios::binary);
    if (!stream) {
        print_error("import-image", "image file could not be opened");
        return 2;
    }

    const std::vector<char> chars {
        std::istreambuf_iterator<char>(stream),
        std::istreambuf_iterator<char>()
    };
    const auto* data = reinterpret_cast<const std::byte*>(chars.data());
    const auto image_result = pp::assets::decode_png_rgba8(std::span<const std::byte>(data, chars.size()));
    if (!image_result) {
        print_error("import-image", image_result.status().message);
        return 2;
    }

    const auto& image = image_result.value();
    const std::uint32_t document_width = args.document_width == 0 ? image.width : args.document_width;
    const std::uint32_t document_height = args.document_height == 0 ? image.height : args.document_height;
    const auto document_result = pp::document::CanvasDocument::create(
        pp::document::DocumentConfig {
            .width = document_width,
            .height = document_height,
            .layer_count = 1,
        });
    if (!document_result) {
        print_error("import-image", document_result.status().message);
        return 2;
    }

    auto document = document_result.value();
    const auto import_status = document.set_layer_frame_face_pixels(
        0,
        0,
        pp::document::LayerFacePixels {
            .face_index = args.face,
            .x = args.x,
            .y = args.y,
            .width = image.width,
            .height = image.height,
            .rgba8 = image.pixels,
        });
    if (!import_status.ok()) {
        print_error("import-image", import_status.message);
        return 2;
    }

    std::cout << "{\"ok\":true,\"command\":\"import-image\""
              << ",\"source\":\"" << json_escape(args.path) << "\""
              << ",\"image\":{\"format\":\"png\",\"width\":" << image.width
              << ",\"height\":" << image.height
              << ",\"bytes\":" << image.pixels.size()
              << "},\"document\":{\"width\":" << document.width()
              << ",\"height\":" << document.height()
              << ",\"layers\":" << document.layers().size()
              << ",\"frames\":" << document.frames().size()
              << ",\"facePayloads\":" << document.face_pixel_payload_count()
              << "},\"payload\":{\"face\":" << args.face
              << ",\"x\":" << args.x
              << ",\"y\":" << args.y
              << ",\"width\":" << image.width
              << ",\"height\":" << image.height
              << ",\"bytes\":" << image.pixels.size()
              << "}}\n";
    return 0;
}

pp::foundation::Status parse_export_image_args(int argc, char** argv, ExportImageArgs& args)
{
    for (int i = 2; i < argc; ++i) {
        const std::string_view key(argv[i]);
        if (key == "--path") {
            if (i + 1 >= argc) {
                return pp::foundation::Status::invalid_argument("missing value for option");
            }

            args.path = argv[++i];
        } else if (key == "--width" || key == "--height") {
            if (i + 1 >= argc) {
                return pp::foundation::Status::invalid_argument("missing value for option");
            }

            const auto value = pp::foundation::parse_u32(argv[++i]);
            if (!value) {
                return value.status();
            }

            if (key == "--width") {
                args.width = value.value();
            } else {
                args.height = value.value();
            }
        } else {
            return pp::foundation::Status::invalid_argument("unknown option");
        }
    }

    if (args.path.empty()) {
        return pp::foundation::Status::invalid_argument("path must not be empty");
    }

    if (args.width == 0 || args.height == 0) {
        return pp::foundation::Status::invalid_argument("width and height must be greater than zero");
    }

    constexpr std::uint64_t max_cli_export_bytes = 64ULL * 1024ULL * 1024ULL;
    if (static_cast<std::uint64_t>(args.width) > max_cli_export_bytes / 4ULL / static_cast<std::uint64_t>(args.height)) {
        return pp::foundation::Status::out_of_range("export image exceeds the CLI automation size limit");
    }

    return pp::foundation::Status::success();
}

int export_image(int argc, char** argv)
{
    ExportImageArgs args;
    const auto status = parse_export_image_args(argc, argv, args);
    if (!status.ok()) {
        print_error("export-image", status.message);
        return 2;
    }

    std::vector<std::uint8_t> pixels(
        static_cast<std::size_t>(args.width) * static_cast<std::size_t>(args.height) * 4U);
    for (std::uint32_t y = 0; y < args.height; ++y) {
        for (std::uint32_t x = 0; x < args.width; ++x) {
            const auto offset = (static_cast<std::size_t>(y) * args.width + x) * 4U;
            pixels[offset + 0U] = static_cast<std::uint8_t>((x * 37U) & 0xffU);
            pixels[offset + 1U] = static_cast<std::uint8_t>((y * 53U) & 0xffU);
            pixels[offset + 2U] = static_cast<std::uint8_t>(((x + y) * 29U) & 0xffU);
            pixels[offset + 3U] = 255U;
        }
    }

    const auto encoded = pp::assets::encode_png_rgba8(args.width, args.height, pixels);
    if (!encoded) {
        print_error("export-image", encoded.status().message);
        return 2;
    }

    std::ofstream stream(args.path, std::ios::binary);
    if (!stream) {
        print_error("export-image", "image file could not be opened for writing");
        return 2;
    }

    const auto& bytes = encoded.value();
    stream.write(reinterpret_cast<const char*>(bytes.data()), static_cast<std::streamsize>(bytes.size()));
    if (!stream) {
        print_error("export-image", "image file could not be written");
        return 2;
    }

    std::cout << "{\"ok\":true,\"command\":\"export-image\""
              << ",\"path\":\"" << json_escape(args.path) << "\""
              << ",\"image\":{\"format\":\"png\",\"width\":" << args.width
              << ",\"height\":" << args.height
              << ",\"bytes\":" << pixels.size()
              << "},\"file\":{\"bytes\":" << bytes.size()
              << "}}\n";
    return 0;
}

pp::foundation::Status parse_inspect_project_args(int argc, char** argv, InspectProjectArgs& args)
{
    for (int i = 2; i < argc; ++i) {
        const std::string_view key(argv[i]);
        if (key == "--path") {
            if (i + 1 >= argc) {
                return pp::foundation::Status::invalid_argument("missing value for option");
            }

            args.path = argv[++i];
        } else {
            return pp::foundation::Status::invalid_argument("unknown option");
        }
    }

    if (args.path.empty()) {
        return pp::foundation::Status::invalid_argument("path must not be empty");
    }

    return pp::foundation::Status::success();
}

int inspect_project(int argc, char** argv)
{
    InspectProjectArgs args;
    const auto status = parse_inspect_project_args(argc, argv, args);
    if (!status.ok()) {
        print_error("inspect-project", status.message);
        return 2;
    }

    std::ifstream stream(args.path, std::ios::binary);
    if (!stream) {
        print_error("inspect-project", "project file could not be opened");
        return 2;
    }

    const std::vector<char> chars {
        std::istreambuf_iterator<char>(stream),
        std::istreambuf_iterator<char>()
    };
    const auto* data = reinterpret_cast<const std::byte*>(chars.data());
    const auto project = pp::assets::parse_ppi_project_index(std::span<const std::byte>(data, chars.size()));
    if (!project) {
        print_error("inspect-project", project.status().message);
        return 2;
    }

    std::cout << "{\"ok\":true,\"command\":\"inspect-project\""
              << ",\"documentVersion\":\"" << project.value().layout.header.document_version.major
              << "." << project.value().layout.header.document_version.minor << "\""
              << ",\"softwareVersion\":\"" << project.value().layout.header.software_version.major
              << "." << project.value().layout.header.software_version.minor
              << "." << project.value().layout.header.software_version.fix
              << "." << project.value().layout.header.software_version.build << "\""
              << ",\"thumbnail\":{\"width\":" << project.value().layout.header.thumbnail.width
              << ",\"height\":" << project.value().layout.header.thumbnail.height
              << ",\"components\":" << project.value().layout.header.thumbnail.components
              << ",\"bytes\":" << project.value().layout.thumbnail_bytes
              << "},\"body\":{\"offset\":" << project.value().layout.body_offset
              << ",\"bytes\":" << project.value().layout.body_bytes
              << ",\"width\":" << project.value().body.summary.width
              << ",\"height\":" << project.value().body.summary.height
              << ",\"layers\":" << project.value().body.summary.layer_count
              << ",\"frames\":" << project.value().body.summary.declared_frame_count
              << ",\"dirtyFaces\":" << project.value().body.summary.dirty_face_count
              << ",\"rgbaFacePayloads\":" << project.value().body.summary.rgba_face_payload_count
              << ",\"compressedBytes\":" << project.value().body.summary.compressed_face_bytes
              << ",\"infoBytes\":" << project.value().body.summary.info_bytes
              << "},\"layers\":[";
    for (std::size_t layer_index = 0; layer_index < project.value().body.layers.size(); ++layer_index) {
        const auto& layer = project.value().body.layers[layer_index];
        if (layer_index != 0U) {
            std::cout << ",";
        }
        std::cout << "{\"index\":" << layer_index
                  << ",\"storedOrder\":" << layer.stored_order
                  << ",\"name\":\"" << json_escape(layer.name) << "\""
                  << ",\"opacity\":" << layer.opacity
                  << ",\"blendMode\":" << layer.blend_mode
                  << ",\"alphaLocked\":" << (layer.alpha_locked ? "true" : "false")
                  << ",\"visible\":" << (layer.visible ? "true" : "false")
                  << ",\"frames\":[";
        for (std::size_t frame_index = 0; frame_index < layer.frames.size(); ++frame_index) {
            const auto& frame = layer.frames[frame_index];
            if (frame_index != 0U) {
                std::cout << ",";
            }
            std::cout << "{\"index\":" << frame_index
                      << ",\"durationMs\":" << frame.duration_ms
                      << ",\"dirtyFaces\":[";
            bool first_face = true;
            for (std::size_t face_index = 0; face_index < frame.faces.size(); ++face_index) {
                const auto& face = frame.faces[face_index];
                if (!face.has_data) {
                    continue;
                }
                if (!first_face) {
                    std::cout << ",";
                }
                first_face = false;
                std::cout << "{\"face\":" << face_index
                          << ",\"box\":[" << face.x0 << "," << face.y0 << "," << face.x1 << "," << face.y1 << "]"
                          << ",\"bodyPayloadOffset\":" << face.body_payload_offset
                          << ",\"bytes\":" << face.payload_bytes
                          << ",\"png\":{\"width\":" << face.png_width
                          << ",\"height\":" << face.png_height
                          << "}}";
            }
            std::cout << "]}";
        }
        std::cout << "]}";
    }
    std::cout << "]}\n";
    return 0;
}

int load_project(int argc, char** argv)
{
    InspectProjectArgs args;
    const auto status = parse_inspect_project_args(argc, argv, args);
    if (!status.ok()) {
        print_error("load-project", status.message);
        return 2;
    }

    std::ifstream stream(args.path, std::ios::binary);
    if (!stream) {
        print_error("load-project", "project file could not be opened");
        return 2;
    }

    const std::string chars {
        std::istreambuf_iterator<char>(stream),
        std::istreambuf_iterator<char>()
    };
    const auto* data = reinterpret_cast<const std::byte*>(chars.data());
    const auto project = pp::assets::decode_ppi_project_images(std::span<const std::byte>(data, chars.size()));
    if (!project) {
        print_error("load-project", project.status().message);
        return 2;
    }

    const auto document_result = pp::document::import_ppi_project_document(project.value());
    if (!document_result) {
        print_error("load-project", document_result.status().message);
        return 2;
    }

    const auto& document = document_result.value();
    std::cout << "{\"ok\":true,\"command\":\"load-project\""
              << ",\"source\":\"ppi\""
              << ",\"pixelDataLoaded\":" << (document.face_pixel_payload_count() > 0U ? "true" : "false")
              << ",\"facePayloads\":" << document.face_pixel_payload_count()
              << ",\"document\":{\"width\":" << document.width()
              << ",\"height\":" << document.height()
              << ",\"layers\":" << document.layers().size()
              << ",\"frames\":" << document.frames().size()
              << ",\"animationDurationMs\":" << document.animation_duration_ms()
              << ",\"layerNames\":[";
    for (std::size_t layer_index = 0; layer_index < document.layers().size(); ++layer_index) {
        if (layer_index != 0U) {
            std::cout << ",";
        }
        std::cout << "\"" << json_escape(document.layers()[layer_index].name) << "\"";
    }
    std::cout << "],\"layerFrameCounts\":[";
    for (std::size_t layer_index = 0; layer_index < document.layers().size(); ++layer_index) {
        if (layer_index != 0U) {
            std::cout << ",";
        }
        std::cout << document.layers()[layer_index].frames.size();
    }
    std::cout << "],\"layerDurationsMs\":[";
    for (std::size_t layer_index = 0; layer_index < document.layers().size(); ++layer_index) {
        if (layer_index != 0U) {
            std::cout << ",";
        }
        const auto duration = document.layer_animation_duration_ms(layer_index);
        std::cout << (duration ? duration.value() : 0U);
    }
    std::cout << "],\"layerOpacities\":[";
    for (std::size_t layer_index = 0; layer_index < document.layers().size(); ++layer_index) {
        if (layer_index != 0U) {
            std::cout << ",";
        }
        std::cout << document.layers()[layer_index].opacity;
    }
    std::cout << "],\"layerBlendModes\":[";
    for (std::size_t layer_index = 0; layer_index < document.layers().size(); ++layer_index) {
        if (layer_index != 0U) {
            std::cout << ",";
        }
        std::cout << "\"" << pp::paint::blend_mode_name(document.layers()[layer_index].blend_mode) << "\"";
    }
    std::cout << "],\"layerAlphaLocked\":[";
    for (std::size_t layer_index = 0; layer_index < document.layers().size(); ++layer_index) {
        if (layer_index != 0U) {
            std::cout << ",";
        }
        std::cout << (document.layers()[layer_index].alpha_locked ? "true" : "false");
    }
    std::cout << "],\"layerVisible\":[";
    for (std::size_t layer_index = 0; layer_index < document.layers().size(); ++layer_index) {
        if (layer_index != 0U) {
            std::cout << ",";
        }
        std::cout << (document.layers()[layer_index].visible ? "true" : "false");
    }
    std::cout << "]}}\n";
    return 0;
}

pp::foundation::Status parse_simulate_stroke_args(int argc, char** argv, SimulateStrokeArgs& args)
{
    for (int i = 2; i < argc; ++i) {
        const std::string_view key(argv[i]);
        if (key == "--x1" || key == "--y1" || key == "--x2" || key == "--y2" || key == "--spacing") {
            if (i + 1 >= argc) {
                return pp::foundation::Status::invalid_argument("missing value for option");
            }

            const auto value = pp::foundation::parse_u32(argv[++i]);
            if (!value) {
                return value.status();
            }

            if (key == "--x1") {
                args.x1 = value.value();
            } else if (key == "--y1") {
                args.y1 = value.value();
            } else if (key == "--x2") {
                args.x2 = value.value();
            } else if (key == "--y2") {
                args.y2 = value.value();
            } else {
                args.spacing = value.value();
            }
        } else {
            return pp::foundation::Status::invalid_argument("unknown option");
        }
    }

    if (args.spacing == 0) {
        return pp::foundation::Status::invalid_argument("stroke spacing must be greater than zero");
    }

    return pp::foundation::Status::success();
}

int simulate_stroke(int argc, char** argv)
{
    SimulateStrokeArgs args;
    const auto status = parse_simulate_stroke_args(argc, argv, args);
    if (!status.ok()) {
        print_error("simulate-stroke", status.message);
        return 2;
    }

    const pp::paint::StrokePoint points[] {
        pp::paint::StrokePoint {
            .x = static_cast<float>(args.x1),
            .y = static_cast<float>(args.y1),
            .pressure = 1.0F,
        },
        pp::paint::StrokePoint {
            .x = static_cast<float>(args.x2),
            .y = static_cast<float>(args.y2),
            .pressure = 1.0F,
        },
    };
    const auto samples = pp::paint::sample_stroke(
        points,
        pp::paint::StrokeSamplingConfig {
            .spacing = static_cast<float>(args.spacing),
        });
    if (!samples) {
        print_error("simulate-stroke", samples.status().message);
        return 2;
    }

    const auto& first = samples.value().front();
    const auto& last = samples.value().back();
    std::cout << "{\"ok\":true,\"command\":\"simulate-stroke\""
              << ",\"samples\":" << samples.value().size()
              << ",\"first\":{\"x\":" << first.x << ",\"y\":" << first.y << "}"
              << ",\"last\":{\"x\":" << last.x << ",\"y\":" << last.y
              << ",\"distance\":" << last.distance << "}}\n";
    return 0;
}

pp::foundation::Status parse_simulate_stroke_script_args(int argc, char** argv, SimulateStrokeScriptArgs& args)
{
    for (int i = 2; i < argc; ++i) {
        const std::string_view key(argv[i]);
        if (key == "--path") {
            if (i + 1 >= argc) {
                return pp::foundation::Status::invalid_argument("missing value for option");
            }

            args.path = argv[++i];
        } else {
            return pp::foundation::Status::invalid_argument("unknown option");
        }
    }

    if (args.path.empty()) {
        return pp::foundation::Status::invalid_argument("path must not be empty");
    }

    return pp::foundation::Status::success();
}

int simulate_stroke_script(int argc, char** argv)
{
    SimulateStrokeScriptArgs args;
    const auto status = parse_simulate_stroke_script_args(argc, argv, args);
    if (!status.ok()) {
        print_error("simulate-stroke-script", status.message);
        return 2;
    }

    std::ifstream stream(args.path, std::ios::binary);
    if (!stream) {
        print_error("simulate-stroke-script", "stroke script file could not be opened");
        return 2;
    }

    const std::string text {
        std::istreambuf_iterator<char>(stream),
        std::istreambuf_iterator<char>()
    };
    const auto script = pp::paint::parse_stroke_script(text);
    if (!script) {
        print_error("simulate-stroke-script", script.status().message);
        return 2;
    }

    std::size_t total_samples = 0;
    float total_distance = 0.0F;
    for (const auto& stroke : script.value().strokes) {
        const pp::paint::StrokePoint points[] { stroke.start, stroke.end };
        const auto samples = pp::paint::sample_stroke(
            points,
            pp::paint::StrokeSamplingConfig {
                .spacing = stroke.spacing,
            });
        if (!samples) {
            print_error("simulate-stroke-script", samples.status().message);
            return 2;
        }

        total_samples += samples.value().size();
        total_distance += samples.value().back().distance;
    }

    std::cout << "{\"ok\":true,\"command\":\"simulate-stroke-script\""
              << ",\"strokes\":" << script.value().strokes.size()
              << ",\"samples\":" << total_samples
              << ",\"distance\":" << total_distance << "}\n";
    return 0;
}

pp::foundation::Status parse_apply_stroke_script_args(int argc, char** argv, ApplyStrokeScriptArgs& args)
{
    for (int i = 2; i < argc; ++i) {
        const std::string_view key(argv[i]);
        if (key == "--path" || key == "--output") {
            if (i + 1 >= argc) {
                return pp::foundation::Status::invalid_argument("missing value for option");
            }

            if (key == "--path") {
                args.path = argv[++i];
            } else {
                args.output_path = argv[++i];
            }
        } else if (key == "--width" || key == "--height") {
            if (i + 1 >= argc) {
                return pp::foundation::Status::invalid_argument("missing value for option");
            }

            const auto value = pp::foundation::parse_u32(argv[++i]);
            if (!value) {
                return value.status();
            }

            if (key == "--width") {
                args.width = value.value();
            } else {
                args.height = value.value();
            }
        } else {
            return pp::foundation::Status::invalid_argument("unknown option");
        }
    }

    if (args.path.empty() || args.output_path.empty()) {
        return pp::foundation::Status::invalid_argument("path and output must not be empty");
    }

    if (args.width < 8 || args.height < 8 || args.width > 4096 || args.height > 4096) {
        return pp::foundation::Status::out_of_range("width and height must be between 8 and 4096");
    }

    return pp::foundation::Status::success();
}

std::uint8_t pressure_to_alpha(float pressure) noexcept
{
    const auto normalized = std::clamp(pressure, 0.0F, 1.0F);
    const auto alpha = static_cast<int>(std::lround(normalized * 255.0F));
    return static_cast<std::uint8_t>(std::clamp(alpha, 1, 255));
}

std::uint32_t clamp_sample_coordinate(float value, std::uint32_t limit) noexcept
{
    if (limit == 0U) {
        return 0;
    }

    const auto rounded = static_cast<int>(std::lround(value));
    const auto clamped = std::clamp(rounded, 0, static_cast<int>(limit - 1U));
    return static_cast<std::uint32_t>(clamped);
}

int apply_stroke_script(int argc, char** argv)
{
    ApplyStrokeScriptArgs args;
    const auto status = parse_apply_stroke_script_args(argc, argv, args);
    if (!status.ok()) {
        print_error("apply-stroke-script", status.message);
        return 2;
    }

    std::ifstream script_stream(args.path, std::ios::binary);
    if (!script_stream) {
        print_error("apply-stroke-script", "stroke script file could not be opened");
        return 2;
    }

    const std::string text {
        std::istreambuf_iterator<char>(script_stream),
        std::istreambuf_iterator<char>()
    };
    const auto script = pp::paint::parse_stroke_script(text);
    if (!script) {
        print_error("apply-stroke-script", script.status().message);
        return 2;
    }

    struct AppliedPoint {
        std::uint32_t x = 0;
        std::uint32_t y = 0;
        std::uint32_t stroke_index = 0;
        float pressure = 1.0F;
    };

    std::vector<AppliedPoint> applied_points;
    std::vector<std::size_t> samples_per_stroke;
    std::size_t total_samples = 0;
    float total_distance = 0.0F;
    std::uint32_t x0 = args.width;
    std::uint32_t y0 = args.height;
    std::uint32_t x1 = 0;
    std::uint32_t y1 = 0;

    for (std::size_t stroke_index = 0; stroke_index < script.value().strokes.size(); ++stroke_index) {
        const auto& stroke = script.value().strokes[stroke_index];
        const pp::paint::StrokePoint points[] { stroke.start, stroke.end };
        const auto samples = pp::paint::sample_stroke(
            points,
            pp::paint::StrokeSamplingConfig {
                .spacing = stroke.spacing,
            });
        if (!samples) {
            print_error("apply-stroke-script", samples.status().message);
            return 2;
        }

        samples_per_stroke.push_back(samples.value().size());
        total_samples += samples.value().size();
        total_distance += samples.value().back().distance;
        for (const auto& sample : samples.value()) {
            const auto x = clamp_sample_coordinate(sample.x, args.width);
            const auto y = clamp_sample_coordinate(sample.y, args.height);
            x0 = std::min(x0, x);
            y0 = std::min(y0, y);
            x1 = std::max(x1, x);
            y1 = std::max(y1, y);
            applied_points.push_back(AppliedPoint {
                .x = x,
                .y = y,
                .stroke_index = static_cast<std::uint32_t>(stroke_index),
                .pressure = sample.pressure,
            });
        }
    }

    if (applied_points.empty()) {
        print_error("apply-stroke-script", "stroke script produced no samples");
        return 2;
    }

    const auto payload_width = x1 - x0 + 1U;
    const auto payload_height = y1 - y0 + 1U;
    std::vector<std::uint8_t> rgba8(
        static_cast<std::size_t>(payload_width) * payload_height * pp::document::rgba8_components,
        0);
    for (std::size_t point_index = 0; point_index < applied_points.size(); ++point_index) {
        const auto& point = applied_points[point_index];
        const auto local_x = point.x - x0;
        const auto local_y = point.y - y0;
        const auto pixel_index = (static_cast<std::size_t>(local_y) * payload_width + local_x)
            * pp::document::rgba8_components;
        rgba8[pixel_index + 0U] = static_cast<std::uint8_t>(64U + ((point.stroke_index * 53U) % 192U));
        rgba8[pixel_index + 1U] = static_cast<std::uint8_t>((point_index * 31U) % 256U);
        rgba8[pixel_index + 2U] = static_cast<std::uint8_t>(255U - ((point.stroke_index * 29U) % 192U));
        rgba8[pixel_index + 3U] = pressure_to_alpha(point.pressure);
    }

    const auto document_result = pp::document::CanvasDocument::create(
        pp::document::DocumentConfig {
            .width = args.width,
            .height = args.height,
            .layer_count = 1,
        });
    if (!document_result) {
        print_error("apply-stroke-script", document_result.status().message);
        return 2;
    }

    auto document = document_result.value();
    auto edit_status = document.rename_layer(0, "Stroke Script");
    if (!edit_status.ok()) {
        print_error("apply-stroke-script", edit_status.message);
        return 2;
    }

    edit_status = document.set_layer_frame_face_pixels(
        0,
        0,
        pp::document::LayerFacePixels {
            .face_index = 0,
            .x = x0,
            .y = y0,
            .width = payload_width,
            .height = payload_height,
            .rgba8 = std::move(rgba8),
        });
    if (!edit_status.ok()) {
        print_error("apply-stroke-script", edit_status.message);
        return 2;
    }

    const auto exported = pp::document::export_ppi_project_document(document);
    if (!exported) {
        print_error("apply-stroke-script", exported.status().message);
        return 2;
    }

    std::ofstream output_stream(args.output_path, std::ios::binary);
    if (!output_stream) {
        print_error("apply-stroke-script", "project file could not be opened for writing");
        return 2;
    }

    const auto& bytes = exported.value();
    output_stream.write(reinterpret_cast<const char*>(bytes.data()), static_cast<std::streamsize>(bytes.size()));
    if (!output_stream) {
        print_error("apply-stroke-script", "project file could not be written");
        return 2;
    }

    const auto decoded = pp::assets::decode_ppi_project_images(bytes);
    if (!decoded) {
        print_error("apply-stroke-script", decoded.status().message);
        return 2;
    }

    std::cout << "{\"ok\":true,\"command\":\"apply-stroke-script\""
              << ",\"path\":\"" << json_escape(args.path) << "\""
              << ",\"output\":\"" << json_escape(args.output_path) << "\""
              << ",\"strokes\":" << script.value().strokes.size()
              << ",\"samples\":" << total_samples
              << ",\"distance\":" << total_distance
              << ",\"samplesPerStroke\":[";
    for (std::size_t stroke_index = 0; stroke_index < samples_per_stroke.size(); ++stroke_index) {
        if (stroke_index != 0U) {
            std::cout << ",";
        }
        std::cout << samples_per_stroke[stroke_index];
    }
    std::cout << "],\"document\":{\"width\":" << document.width()
              << ",\"height\":" << document.height()
              << ",\"layers\":" << document.layers().size()
              << ",\"frames\":" << document.frames().size()
              << ",\"facePayloads\":" << document.face_pixel_payload_count()
              << "},\"payload\":{\"face\":0"
              << ",\"box\":[" << x0 << "," << y0 << "," << (x1 + 1U) << "," << (y1 + 1U) << "]"
              << ",\"width\":" << payload_width
              << ",\"height\":" << payload_height
              << ",\"bytes\":" << document.layers()[0].frames[0].face_pixels[0].rgba8.size()
              << "},\"export\":{\"bytes\":" << bytes.size()
              << ",\"dirtyFaces\":" << decoded.value().project.body.summary.dirty_face_count
              << ",\"rgbaFacePayloads\":" << decoded.value().project.body.summary.rgba_face_payload_count
              << ",\"compressedBytes\":" << decoded.value().project.body.summary.compressed_face_bytes
              << "}}\n";
    return 0;
}

pp::foundation::Status parse_simulate_document_edits_args(
    int argc,
    char** argv,
    SimulateDocumentEditsArgs& args)
{
    for (int i = 2; i < argc; ++i) {
        const std::string_view key(argv[i]);
        if (key == "--width" || key == "--height") {
            if (i + 1 >= argc) {
                return pp::foundation::Status::invalid_argument("missing value for option");
            }

            const auto value = pp::foundation::parse_u32(argv[++i]);
            if (!value) {
                return value.status();
            }

            if (key == "--width") {
                args.width = value.value();
            } else {
                args.height = value.value();
            }
        } else {
            return pp::foundation::Status::invalid_argument("unknown option");
        }
    }

    if (args.width == 0 || args.height == 0) {
        return pp::foundation::Status::invalid_argument("width and height must be greater than zero");
    }

    return pp::foundation::Status::success();
}

int simulate_document_edits(int argc, char** argv)
{
    SimulateDocumentEditsArgs args;
    const auto status = parse_simulate_document_edits_args(argc, argv, args);
    if (!status.ok()) {
        print_error("simulate-document-edits", status.message);
        return 2;
    }

    const auto document_result = pp::document::CanvasDocument::create(
        pp::document::DocumentConfig {
            .width = args.width,
            .height = args.height,
            .layer_count = 1,
        });
    if (!document_result) {
        print_error("simulate-document-edits", document_result.status().message);
        return 2;
    }

    auto document = document_result.value();
    auto edit_status = document.set_frame_duration(0, 100);
    if (!edit_status.ok()) {
        print_error("simulate-document-edits", edit_status.message);
        return 2;
    }

    const auto layer_result = document.add_layer("Paint");
    if (!layer_result) {
        print_error("simulate-document-edits", layer_result.status().message);
        return 2;
    }

    const std::size_t paint_layer = layer_result.value();
    edit_status = document.rename_layer(paint_layer, "Ink");
    if (!edit_status.ok()) {
        print_error("simulate-document-edits", edit_status.message);
        return 2;
    }
    edit_status = document.set_layer_visible(paint_layer, false);
    if (!edit_status.ok()) {
        print_error("simulate-document-edits", edit_status.message);
        return 2;
    }
    edit_status = document.set_layer_alpha_locked(paint_layer, true);
    if (!edit_status.ok()) {
        print_error("simulate-document-edits", edit_status.message);
        return 2;
    }
    edit_status = document.set_layer_opacity(paint_layer, 0.625F);
    if (!edit_status.ok()) {
        print_error("simulate-document-edits", edit_status.message);
        return 2;
    }
    edit_status = document.set_layer_blend_mode(paint_layer, pp::paint::BlendMode::overlay);
    if (!edit_status.ok()) {
        print_error("simulate-document-edits", edit_status.message);
        return 2;
    }
    edit_status = document.set_active_layer(paint_layer);
    if (!edit_status.ok()) {
        print_error("simulate-document-edits", edit_status.message);
        return 2;
    }

    const auto duplicated_frame = document.duplicate_frame(0);
    if (!duplicated_frame) {
        print_error("simulate-document-edits", duplicated_frame.status().message);
        return 2;
    }
    edit_status = document.set_frame_duration(duplicated_frame.value(), 333);
    if (!edit_status.ok()) {
        print_error("simulate-document-edits", edit_status.message);
        return 2;
    }

    const auto added_frame = document.add_frame(250);
    if (!added_frame) {
        print_error("simulate-document-edits", added_frame.status().message);
        return 2;
    }
    edit_status = document.move_frame(added_frame.value(), 0);
    if (!edit_status.ok()) {
        print_error("simulate-document-edits", edit_status.message);
        return 2;
    }
    edit_status = document.move_layer(paint_layer, 0);
    if (!edit_status.ok()) {
        print_error("simulate-document-edits", edit_status.message);
        return 2;
    }

    edit_status = document.set_layer_frame_face_pixels(
        0,
        0,
        pp::document::LayerFacePixels {
            .face_index = 2,
            .x = 1,
            .y = 2,
            .width = 1,
            .height = 1,
            .rgba8 = { 255, 0, 0, 255 },
        });
    if (!edit_status.ok()) {
        print_error("simulate-document-edits", edit_status.message);
        return 2;
    }

    edit_status = document.set_selection_mask(pp::document::SelectionMask {
        .face_index = 4,
        .x = 3,
        .y = 5,
        .width = 2,
        .height = 2,
        .alpha8 = { 0, 64, 128, 255 },
    });
    if (!edit_status.ok()) {
        print_error("simulate-document-edits", edit_status.message);
        return 2;
    }

    const auto& active_layer = document.layers()[document.active_layer_index()];
    const auto& selection_mask = document.selection_masks()[0];
    std::cout << "{\"ok\":true,\"command\":\"simulate-document-edits\""
              << ",\"document\":{\"width\":" << document.width()
              << ",\"height\":" << document.height()
              << ",\"layers\":" << document.layers().size()
              << ",\"frames\":" << document.frames().size()
              << ",\"activeLayer\":" << document.active_layer_index()
              << ",\"activeFrame\":" << document.active_frame_index()
              << ",\"animationDurationMs\":" << document.animation_duration_ms()
              << ",\"facePayloads\":" << document.face_pixel_payload_count()
              << ",\"selectionMasks\":" << document.selection_mask_payload_count()
              << "},\"activeLayer\":{\"name\":\"" << json_escape(active_layer.name)
              << "\",\"visible\":" << (active_layer.visible ? "true" : "false")
              << ",\"alphaLocked\":" << (active_layer.alpha_locked ? "true" : "false")
              << ",\"opacity\":" << active_layer.opacity
              << ",\"blendMode\":\"" << pp::paint::blend_mode_name(active_layer.blend_mode)
              << "\",\"frames\":" << active_layer.frames.size()
              << "},\"frames\":[";
    for (std::size_t frame_index = 0; frame_index < document.frames().size(); ++frame_index) {
        if (frame_index != 0U) {
            std::cout << ",";
        }
        std::cout << document.frames()[frame_index].duration_ms;
    }
    std::cout << "],\"activeLayerFrameDurations\":[";
    for (std::size_t frame_index = 0; frame_index < active_layer.frames.size(); ++frame_index) {
        if (frame_index != 0U) {
            std::cout << ",";
        }
        std::cout << active_layer.frames[frame_index].duration_ms;
    }
    std::cout << "],\"selectionMask\":{\"face\":" << selection_mask.face_index
              << ",\"x\":" << selection_mask.x
              << ",\"y\":" << selection_mask.y
              << ",\"width\":" << selection_mask.width
              << ",\"height\":" << selection_mask.height
              << ",\"bytes\":" << selection_mask.alpha8.size()
              << ",\"maxAlpha\":" << static_cast<int>(selection_mask.alpha8.back())
              << "}}\n";
    return 0;
}

pp::foundation::Status parse_simulate_image_import_args(
    int argc,
    char** argv,
    SimulateImageImportArgs& args)
{
    for (int i = 2; i < argc; ++i) {
        const std::string_view key(argv[i]);
        if (key == "--width" || key == "--height") {
            if (i + 1 >= argc) {
                return pp::foundation::Status::invalid_argument("missing value for option");
            }

            const auto value = pp::foundation::parse_u32(argv[++i]);
            if (!value) {
                return value.status();
            }

            if (key == "--width") {
                args.width = value.value();
            } else {
                args.height = value.value();
            }
        } else {
            return pp::foundation::Status::invalid_argument("unknown option");
        }
    }

    if (args.width == 0 || args.height == 0) {
        return pp::foundation::Status::invalid_argument("width and height must be greater than zero");
    }

    return pp::foundation::Status::success();
}

int simulate_image_import(int argc, char** argv)
{
    SimulateImageImportArgs args;
    const auto status = parse_simulate_image_import_args(argc, argv, args);
    if (!status.ok()) {
        print_error("simulate-image-import", status.message);
        return 2;
    }

    const auto image_result = pp::assets::decode_png_rgba8(transparent_png_1x1_bytes());
    if (!image_result) {
        print_error("simulate-image-import", image_result.status().message);
        return 2;
    }

    const auto document_result = pp::document::CanvasDocument::create(
        pp::document::DocumentConfig {
            .width = args.width,
            .height = args.height,
            .layer_count = 1,
        });
    if (!document_result) {
        print_error("simulate-image-import", document_result.status().message);
        return 2;
    }

    const auto& image = image_result.value();
    auto document = document_result.value();
    const auto import_status = document.set_layer_frame_face_pixels(
        0,
        0,
        pp::document::LayerFacePixels {
            .face_index = 0,
            .x = 0,
            .y = 0,
            .width = image.width,
            .height = image.height,
            .rgba8 = image.pixels,
        });
    if (!import_status.ok()) {
        print_error("simulate-image-import", import_status.message);
        return 2;
    }

    const auto& payload = document.layers()[0].frames[0].face_pixels[0];
    std::cout << "{\"ok\":true,\"command\":\"simulate-image-import\""
              << ",\"image\":{\"format\":\"png\",\"width\":" << image.width
              << ",\"height\":" << image.height
              << ",\"bytes\":" << image.pixels.size()
              << ",\"alpha\":" << static_cast<int>(image.pixels[3])
              << "},\"document\":{\"width\":" << document.width()
              << ",\"height\":" << document.height()
              << ",\"layers\":" << document.layers().size()
              << ",\"frames\":" << document.frames().size()
              << ",\"facePayloads\":" << document.face_pixel_payload_count()
              << "},\"payload\":{\"face\":" << payload.face_index
              << ",\"x\":" << payload.x
              << ",\"y\":" << payload.y
              << ",\"width\":" << payload.width
              << ",\"height\":" << payload.height
              << ",\"bytes\":" << payload.rgba8.size()
              << "}}\n";
    return 0;
}

pp::foundation::Status parse_simulate_document_export_args(
    int argc,
    char** argv,
    SimulateDocumentExportArgs& args)
{
    for (int i = 2; i < argc; ++i) {
        const std::string_view key(argv[i]);
        if (key == "--width" || key == "--height") {
            if (i + 1 >= argc) {
                return pp::foundation::Status::invalid_argument("missing value for option");
            }

            const auto value = pp::foundation::parse_u32(argv[++i]);
            if (!value) {
                return value.status();
            }

            if (key == "--width") {
                args.width = value.value();
            } else {
                args.height = value.value();
            }
        } else {
            return pp::foundation::Status::invalid_argument("unknown option");
        }
    }

    if (args.width == 0 || args.height == 0) {
        return pp::foundation::Status::invalid_argument("width and height must be greater than zero");
    }

    if (args.width < 8 || args.height < 8) {
        return pp::foundation::Status::out_of_range("width and height must be at least 8 for export simulation");
    }

    return pp::foundation::Status::success();
}

int simulate_document_export(int argc, char** argv)
{
    SimulateDocumentExportArgs args;
    const auto status = parse_simulate_document_export_args(argc, argv, args);
    if (!status.ok()) {
        print_error("simulate-document-export", status.message);
        return 2;
    }

    const auto document_result = create_export_sample_document(args.width, args.height);
    if (!document_result) {
        print_error("simulate-document-export", document_result.status().message);
        return 2;
    }

    const auto exported = pp::document::export_ppi_project_document(document_result.value());
    if (!exported) {
        print_error("simulate-document-export", exported.status().message);
        return 2;
    }

    const auto decoded = pp::assets::decode_ppi_project_images(exported.value());
    if (!decoded) {
        print_error("simulate-document-export", decoded.status().message);
        return 2;
    }

    const auto imported = pp::document::import_ppi_project_document(decoded.value());
    if (!imported) {
        print_error("simulate-document-export", imported.status().message);
        return 2;
    }

    const auto& source = document_result.value();
    const auto& roundtrip = imported.value();
    std::cout << "{\"ok\":true,\"command\":\"simulate-document-export\""
              << ",\"source\":{\"width\":" << source.width()
              << ",\"height\":" << source.height()
              << ",\"layers\":" << source.layers().size()
              << ",\"frames\":" << source.frames().size()
              << ",\"facePayloads\":" << source.face_pixel_payload_count()
              << "},\"export\":{\"bytes\":" << exported.value().size()
              << ",\"dirtyFaces\":" << decoded.value().project.body.summary.dirty_face_count
              << ",\"rgbaFacePayloads\":" << decoded.value().project.body.summary.rgba_face_payload_count
              << ",\"compressedBytes\":" << decoded.value().project.body.summary.compressed_face_bytes
              << "},\"roundtrip\":{\"layers\":" << roundtrip.layers().size()
              << ",\"frames\":" << roundtrip.frames().size()
              << ",\"facePayloads\":" << roundtrip.face_pixel_payload_count()
              << ",\"layerNames\":[";
    for (std::size_t layer_index = 0; layer_index < roundtrip.layers().size(); ++layer_index) {
        if (layer_index != 0U) {
            std::cout << ",";
        }
        std::cout << "\"" << json_escape(roundtrip.layers()[layer_index].name) << "\"";
    }
    std::cout << "],\"layerFrameCounts\":[";
    for (std::size_t layer_index = 0; layer_index < roundtrip.layers().size(); ++layer_index) {
        if (layer_index != 0U) {
            std::cout << ",";
        }
        std::cout << roundtrip.layers()[layer_index].frames.size();
    }
    std::cout << "],\"layerDurationsMs\":[";
    for (std::size_t layer_index = 0; layer_index < roundtrip.layers().size(); ++layer_index) {
        if (layer_index != 0U) {
            std::cout << ",";
        }
        const auto duration = roundtrip.layer_animation_duration_ms(layer_index);
        std::cout << (duration ? duration.value() : 0U);
    }
    std::cout << "]},\"payloads\":[";
    for (std::size_t payload_index = 0; payload_index < decoded.value().faces.size(); ++payload_index) {
        const auto& payload = decoded.value().faces[payload_index];
        if (payload_index != 0U) {
            std::cout << ",";
        }
        std::cout << "{\"layer\":" << payload.layer_index
                  << ",\"frame\":" << payload.frame_index
                  << ",\"face\":" << payload.face_index
                  << ",\"x\":" << payload.descriptor.x0
                  << ",\"y\":" << payload.descriptor.y0
                  << ",\"bytes\":" << payload.image.pixels.size()
                  << ",\"alpha\":" << static_cast<int>(payload.image.pixels[3])
                  << "}";
    }
    std::cout << "]}\n";
    return 0;
}

pp::foundation::Status parse_simulate_document_history_args(
    int argc,
    char** argv,
    SimulateDocumentHistoryArgs& args)
{
    for (int i = 2; i < argc; ++i) {
        const std::string_view key(argv[i]);
        if (key == "--width" || key == "--height" || key == "--history") {
            if (i + 1 >= argc) {
                return pp::foundation::Status::invalid_argument("missing value for option");
            }

            const auto value = pp::foundation::parse_u32(argv[++i]);
            if (!value) {
                return value.status();
            }

            if (key == "--width") {
                args.width = value.value();
            } else if (key == "--height") {
                args.height = value.value();
            } else {
                args.history_entries = value.value();
            }
        } else {
            return pp::foundation::Status::invalid_argument("unknown option");
        }
    }

    if (args.width == 0 || args.height == 0) {
        return pp::foundation::Status::invalid_argument("width and height must be greater than zero");
    }

    return pp::foundation::Status::success();
}

int simulate_document_history(int argc, char** argv)
{
    SimulateDocumentHistoryArgs args;
    const auto status = parse_simulate_document_history_args(argc, argv, args);
    if (!status.ok()) {
        print_error("simulate-document-history", status.message);
        return 2;
    }

    const auto document_result = pp::document::CanvasDocument::create(
        pp::document::DocumentConfig {
            .width = args.width,
            .height = args.height,
            .layer_count = 1,
        });
    if (!document_result) {
        print_error("simulate-document-history", document_result.status().message);
        return 2;
    }

    auto history_result = pp::document::DocumentHistory::create(
        document_result.value(),
        static_cast<std::size_t>(args.history_entries));
    if (!history_result) {
        print_error("simulate-document-history", history_result.status().message);
        return 2;
    }

    auto history = history_result.value();
    auto with_layer = history.current();
    const auto layer_result = with_layer.add_layer("Paint");
    if (!layer_result) {
        print_error("simulate-document-history", layer_result.status().message);
        return 2;
    }

    auto apply_status = history.apply(with_layer);
    if (!apply_status.ok()) {
        print_error("simulate-document-history", apply_status.message);
        return 2;
    }

    auto with_frame = history.current();
    const auto frame_result = with_frame.add_frame(250);
    if (!frame_result) {
        print_error("simulate-document-history", frame_result.status().message);
        return 2;
    }

    apply_status = history.apply(with_frame);
    if (!apply_status.ok()) {
        print_error("simulate-document-history", apply_status.message);
        return 2;
    }

    const auto undo_status = history.undo();
    if (!undo_status.ok()) {
        print_error("simulate-document-history", undo_status.message);
        return 2;
    }

    const auto undo_layers = history.current().layers().size();
    const auto undo_frames = history.current().frames().size();
    const auto undo_can_redo = history.can_redo();
    const auto undo_index = history.current_index();

    const auto redo_status = history.redo();
    if (!redo_status.ok()) {
        print_error("simulate-document-history", redo_status.message);
        return 2;
    }

    const auto& current = history.current();
    std::cout << "{\"ok\":true,\"command\":\"simulate-document-history\""
              << ",\"history\":{\"size\":" << history.size()
              << ",\"currentIndex\":" << history.current_index()
              << ",\"canUndo\":" << (history.can_undo() ? "true" : "false")
              << ",\"canRedo\":" << (history.can_redo() ? "true" : "false")
              << "},\"undo\":{\"layers\":" << undo_layers
              << ",\"frames\":" << undo_frames
              << ",\"currentIndex\":" << undo_index
              << ",\"canRedo\":" << (undo_can_redo ? "true" : "false")
              << "},\"current\":{\"width\":" << current.width()
              << ",\"height\":" << current.height()
              << ",\"layers\":" << current.layers().size()
              << ",\"frames\":" << current.frames().size()
              << ",\"activeLayer\":" << current.active_layer_index()
              << ",\"activeFrame\":" << current.active_frame_index()
              << ",\"animationDurationMs\":" << current.animation_duration_ms()
              << "}}\n";
    return 0;
}

pp::foundation::Status parse_record_render_args(int argc, char** argv, RecordRenderArgs& args)
{
    for (int i = 2; i < argc; ++i) {
        const std::string_view key(argv[i]);
        if (key == "--width" || key == "--height") {
            if (i + 1 >= argc) {
                return pp::foundation::Status::invalid_argument("missing value for option");
            }

            const auto value = pp::foundation::parse_u32(argv[++i]);
            if (!value) {
                return value.status();
            }

            if (key == "--width") {
                args.width = value.value();
            } else {
                args.height = value.value();
            }
        } else {
            return pp::foundation::Status::invalid_argument("unknown option");
        }
    }

    if (args.width == 0 || args.height == 0) {
        return pp::foundation::Status::invalid_argument("width and height must be greater than zero");
    }

    return pp::foundation::Status::success();
}

int record_render(int argc, char** argv)
{
    RecordRenderArgs args;
    const auto status = parse_record_render_args(argc, argv, args);
    if (!status.ok()) {
        print_error("record-render", status.message);
        return 2;
    }

    pp::renderer::RecordingRenderDevice device;
    pp::renderer::RecordingRenderTarget target(pp::renderer::TextureDesc {
        .extent = pp::renderer::Extent2D { .width = args.width, .height = args.height },
        .format = pp::renderer::TextureFormat::rgba8,
        .render_target = true,
    });
    pp::renderer::RecordingShaderProgram shader("pano-cli-record-render");
    pp::renderer::RecordingMesh mesh(pp::renderer::MeshDesc {
        .vertex_count = 3,
        .index_count = 0,
        .topology = pp::renderer::PrimitiveTopology::triangles,
    });

    device.trace()->marker("renderer", "pano_cli_record_render");
    auto& context = device.immediate_context();
    const auto begin_status = context.begin_render_pass(
        target,
        pp::renderer::ClearColor { .r = 0.0F, .g = 0.0F, .b = 0.0F, .a = 1.0F });
    if (!begin_status.ok()) {
        print_error("record-render", begin_status.message);
        return 2;
    }

    const auto viewport_status = context.set_viewport(
        pp::renderer::Viewport { .x = 0, .y = 0, .width = args.width, .height = args.height });
    if (!viewport_status.ok()) {
        print_error("record-render", viewport_status.message);
        return 2;
    }

    const auto shader_status = context.bind_shader(shader);
    const auto mesh_status = context.bind_mesh(mesh);
    const auto draw_status = context.draw();
    context.end_render_pass();

    if (!shader_status.ok()) {
        print_error("record-render", shader_status.message);
        return 2;
    }
    if (!mesh_status.ok()) {
        print_error("record-render", mesh_status.message);
        return 2;
    }
    if (!draw_status.ok()) {
        print_error("record-render", draw_status.message);
        return 2;
    }

    std::size_t draw_commands = 0;
    std::size_t trace_markers = 0;
    const auto commands = device.commands();
    for (const auto& command : commands) {
        if (command.kind == pp::renderer::RecordedRenderCommandKind::draw) {
            ++draw_commands;
        } else if (command.kind == pp::renderer::RecordedRenderCommandKind::trace_marker) {
            ++trace_markers;
        }
    }

    std::cout << "{\"ok\":true,\"command\":\"record-render\""
              << ",\"backend\":\"" << device.backend_name() << "\""
              << ",\"target\":{\"width\":" << args.width
              << ",\"height\":" << args.height
              << ",\"format\":\"rgba8\"}"
              << ",\"commands\":" << commands.size()
              << ",\"drawCommands\":" << draw_commands
              << ",\"traceMarkers\":" << trace_markers
              << ",\"first\":\""
              << pp::renderer::recorded_render_command_kind_name(commands.front().kind)
              << "\",\"last\":\""
              << pp::renderer::recorded_render_command_kind_name(commands.back().kind)
              << "\"}\n";
    return 0;
}

pp::foundation::Status parse_layout_args(int argc, char** argv, ParseLayoutArgs& args)
{
    for (int i = 2; i < argc; ++i) {
        const std::string_view key(argv[i]);
        if (key == "--path") {
            if (i + 1 >= argc) {
                return pp::foundation::Status::invalid_argument("missing value for option");
            }

            args.path = argv[++i];
        } else {
            return pp::foundation::Status::invalid_argument("unknown option");
        }
    }

    if (args.path.empty()) {
        return pp::foundation::Status::invalid_argument("path must not be empty");
    }

    return pp::foundation::Status::success();
}

int parse_layout(int argc, char** argv)
{
    ParseLayoutArgs args;
    const auto status = parse_layout_args(argc, argv, args);
    if (!status.ok()) {
        print_error("parse-layout", status.message);
        return 2;
    }

    std::ifstream stream(args.path, std::ios::binary);
    if (!stream) {
        print_error("parse-layout", "layout file could not be opened");
        return 2;
    }

    const std::string xml {
        std::istreambuf_iterator<char>(stream),
        std::istreambuf_iterator<char>()
    };
    const auto summary = pp::ui::parse_layout_xml(xml);
    if (!summary) {
        print_error("parse-layout", summary.status().message);
        return 2;
    }

    std::cout << "{\"ok\":true,\"command\":\"parse-layout\""
              << ",\"nodes\":" << summary.value().node_count
              << ",\"lengthAttributes\":" << summary.value().length_attribute_count
              << "}\n";
    return 0;
}

}

int main(int argc, char** argv)
{
    if (argc < 2) {
        print_help();
        return 1;
    }

    const std::string_view command(argv[1]);
    if (command == "--help" || command == "-h") {
        print_help();
        return 0;
    }

    if (command == "create-document") {
        return create_document(argc, argv);
    }

    if (command == "inspect-image") {
        return inspect_image(argc, argv);
    }

    if (command == "export-image") {
        return export_image(argc, argv);
    }

    if (command == "import-image") {
        return import_image(argc, argv);
    }

    if (command == "inspect-project") {
        return inspect_project(argc, argv);
    }

    if (command == "load-project") {
        return load_project(argc, argv);
    }

    if (command == "simulate-stroke") {
        return simulate_stroke(argc, argv);
    }

    if (command == "simulate-stroke-script") {
        return simulate_stroke_script(argc, argv);
    }

    if (command == "apply-stroke-script") {
        return apply_stroke_script(argc, argv);
    }

    if (command == "simulate-document-edits") {
        return simulate_document_edits(argc, argv);
    }

    if (command == "simulate-document-export") {
        return simulate_document_export(argc, argv);
    }

    if (command == "simulate-document-history") {
        return simulate_document_history(argc, argv);
    }

    if (command == "simulate-image-import") {
        return simulate_image_import(argc, argv);
    }

    if (command == "parse-layout") {
        return parse_layout(argc, argv);
    }

    if (command == "record-render") {
        return record_render(argc, argv);
    }

    if (command == "save-document-project") {
        return save_document_project(argc, argv);
    }

    if (command == "save-project") {
        return save_project(argc, argv);
    }

    print_error(command, "unknown command");
    return 2;
}