#include "pch.h"
#include "platform_legacy/legacy_platform_services.h"
#include "platform_legacy/legacy_platform_state.h"

#include "legacy_ui_gl_dispatch.h"
#include "log.h"
#include "platform_apple/apple_platform_services.h"
#include "platform_api/network_tls_policy.h"
#include "platform_api/platform_policy.h"
#include "renderer_gl/opengl_capabilities.h"

#ifdef __ANDROID__
#include "main.h"
void displayKeyboard(bool pShow);
void android_async_lock();
void android_async_swap();
void android_async_unlock();
void android_attach_jni();
void android_detach_jni();
void android_pick_file(std::function<void(std::string)> callback);
void android_pick_file_save(std::function<void(std::string)> callback);
std::string android_get_clipboard();
bool android_set_clipboard(const std::string& s);
#elif __APPLE__
#include <Foundation/Foundation.h>
void delete_all_files_in_path(const std::string& source_path);
#ifdef __IOS__
void save_image_library(const std::string& path);
#endif
#elif __LINUX__
#include <tinyfiledialogs.h>
#include "platform_linux/linux_platform_services.h"
std::string linux_home_path();
int mkpath(const std::string& dir, mode_t mode = DEFFILEMODE);
#elif __WEB__
void webgl_pick_file(std::function<void(std::string)> callback);
void webgl_pick_file_save(
    const std::string& path,
    const std::string& name,
    std::function<void(bool)> callback);
void webgl_sync();
#endif

namespace {

// DEBT-0017: fallback for platforms that do not inject PlatformServices yet.
class LegacyPlatformServices final : public pp::platform::PlatformServices {
public:
    [[nodiscard]] pp::platform::PlatformStoragePaths prepare_storage_paths() override
    {
#if defined(__IOS__)
        return pp::platform::apple::prepare_legacy_apple_storage_paths();
#elif defined(__OSX__)
        return pp::platform::apple::prepare_legacy_apple_storage_paths();
#elif __LINUX__
        const std::string data_path = linux_home_path() + "/PanoPainter";
        mkpath(data_path + "/brushes");
        mkpath(data_path + "/brushes/thumbs");
        mkpath(data_path + "/patterns");
        mkpath(data_path + "/patterns/thumbs");
        mkpath(data_path + "/settings");
        mkpath(data_path + "/frames");
        return {
            data_path,
            data_path,
            data_path + "/frames",
            {},
        };
#elif __WEB__
        const std::string data_path = "/PanoPainter";
        mkdir(data_path.c_str(), 0777);
        mkdir((data_path + "/brushes").c_str(), 0777);
        mkdir((data_path + "/brushes/thumbs").c_str(), 0777);
        mkdir((data_path + "/patterns").c_str(), 0777);
        mkdir((data_path + "/patterns/thumbs").c_str(), 0777);
        mkdir((data_path + "/settings").c_str(), 0777);
        mkdir((data_path + "/frames").c_str(), 0777);
        return {
            data_path,
            data_path,
            data_path + "/frames",
            {},
        };
#else
        return pp::platform::legacy::active_legacy_storage_paths();
#endif
    }

    void log_stacktrace() override
    {
#if defined(__OSX__)
        NSString* callstack = [[NSThread callStackSymbols] componentsJoinedByString:@"\n"];
        LOG("callstack:\n%s", [callstack cStringUsingEncoding:NSUTF8StringEncoding]);
#endif
    }

    void trigger_crash_test() override
    {
#ifdef __IOS__
        pp::platform::apple::active_legacy_apple_document_platform_services().trigger_crash_test();
#elif __OSX__
        pp::platform::apple::active_legacy_apple_document_platform_services().trigger_crash_test();
#elif defined(__ANDROID__)
        int *x = nullptr; *x = 42;
        LOG("%d", *x);
#endif
    }

    [[nodiscard]] std::string clipboard_text() override
    {
#if defined(__IOS__) || defined(__OSX__)
        const auto family = pp::platform::current_platform_family();
        if (family == pp::platform::PlatformFamily::ios || family == pp::platform::PlatformFamily::macos)
            return pp::platform::apple::active_legacy_apple_document_platform_services().clipboard_text();
#endif
#ifdef __ANDROID__
        return android_get_clipboard();
#else
        return {};
#endif
    }

    [[nodiscard]] bool set_clipboard_text(std::string_view text) override
    {
#if defined(__IOS__) || defined(__OSX__)
        const auto family = pp::platform::current_platform_family();
        if (family == pp::platform::PlatformFamily::ios || family == pp::platform::PlatformFamily::macos)
            return pp::platform::apple::active_legacy_apple_document_platform_services().set_clipboard_text(text);
#endif
        const std::string value(text);
#ifdef __ANDROID__
        return android_set_clipboard(value);
#else
        (void)value;
        return false;
#endif
    }

    void set_cursor_visible(bool visible) override
    {
#if defined(__IOS__) || defined(__OSX__)
        pp::platform::apple::active_legacy_apple_document_platform_services().set_cursor_visible(visible);
#else
        (void)visible;
#endif
    }

    void set_virtual_keyboard_visible(bool visible) override
    {
#ifdef __IOS__
        pp::platform::apple::active_legacy_apple_document_platform_services().set_virtual_keyboard_visible(visible);
#elif __ANDROID__
        displayKeyboard(visible);
#else
        (void)visible;
#endif
    }

    void attach_ui_thread() override
    {
#ifdef __ANDROID__
        android_attach_jni();
#endif
    }

    void detach_ui_thread() override
    {
#ifdef __ANDROID__
        android_detach_jni();
#endif
    }

    void acquire_render_context() override
    {
#if defined(__IOS__) || defined(__OSX__)
        pp::platform::apple::active_legacy_apple_document_platform_services().acquire_render_context();
#elif __ANDROID__
        android_async_lock();
#elif __LINUX__ || __WEB__
        pp::platform::legacy::acquire_legacy_glfw_render_context();
#endif
    }

    void release_render_context() override
    {
#if defined(__IOS__) || defined(__OSX__)
        pp::platform::apple::active_legacy_apple_document_platform_services().release_render_context();
#elif __ANDROID__
        android_async_unlock();
#endif
    }

    void present_render_context() override
    {
#if defined(__IOS__) || defined(__OSX__)
        pp::platform::apple::active_legacy_apple_document_platform_services().present_render_context();
#elif __ANDROID__
        android_async_swap();
#elif __LINUX__ || __WEB__
        pp::platform::legacy::present_legacy_glfw_render_context();
#endif
    }

    void bind_default_render_target() override
    {
        pp::legacy::ui_gl::bind_opengl_framebuffer(
            pp::renderer::gl::framebuffer_target(),
            pp::renderer::gl::default_framebuffer_id());
    }

    void bind_main_render_target() override
    {
#if __IOS__
        pp::platform::apple::active_legacy_apple_document_platform_services().bind_main_render_target();
#else
        bind_default_render_target();
#endif
    }

    void apply_render_platform_hints() override
    {
#if defined(__OSX__)
        const auto status = pp::renderer::gl::apply_opengl_render_platform_hints(
            pp::renderer::gl::OpenGlRenderPlatformHintDispatch {
                .enable = pp::legacy::ui_gl::enable_opengl_state,
            });
        if (!status.ok())
            LOG("OpenGL legacy render platform hints failed: %s", status.message);
#endif
    }

    void install_render_debug_callback() override
    {
    }

    void begin_render_capture_frame() override
    {
    }

    void end_render_capture_frame() override
    {
    }

    [[nodiscard]] bool deletes_recorded_files_on_clear() override
    {
        return pp::platform::platform_deletes_recorded_files_on_clear(
            pp::platform::current_platform_family());
    }

    void clear_recorded_files(std::string_view recording_path) override
    {
#if defined(__IOS__) || defined(__OSX__)
        delete_all_files_in_path(std::string(recording_path));
#else
        (void)recording_path;
#endif
    }

    void publish_exported_image(std::string_view path) override
    {
        const auto family = pp::platform::current_platform_family();
        if (pp::platform::legacy::handles_legacy_web_platform_family(family))
        {
            pp::platform::legacy::publish_legacy_web_exported_image(path);
            return;
        }
        if (!pp::platform::platform_publishes_exported_images(family))
        {
            (void)path;
            return;
        }
#ifdef __IOS__
        save_image_library(std::string(path));
#else
        (void)path;
#endif
    }

    void flush_persistent_storage() override
    {
        const auto family = pp::platform::current_platform_family();
        if (pp::platform::legacy::handles_legacy_web_platform_family(family))
        {
            pp::platform::legacy::flush_legacy_web_persistent_storage();
            return;
        }
        if (!pp::platform::platform_flushes_persistent_storage(family))
            return;
    }

    [[nodiscard]] std::vector<std::string> document_browse_roots(
        std::string_view work_path,
        std::string_view data_path) override
    {
#if defined(__IOS__) || defined(__OSX__)
        return pp::platform::apple::active_legacy_apple_document_platform_services().document_browse_roots(work_path, data_path);
#else
        return pp::platform::platform_document_browse_roots(
            pp::platform::current_platform_family(),
            work_path,
            data_path);
#endif
    }

    void save_ui_state() override
    {
        if (!pp::platform::platform_saves_native_ui_state(pp::platform::current_platform_family()))
            return;
#if defined(__IOS__) || defined(__OSX__)
        pp::platform::apple::active_legacy_apple_document_platform_services().save_ui_state();
#endif
    }

    [[nodiscard]] bool enables_live_asset_reloading() override
    {
        return pp::platform::platform_enables_live_asset_reloading(
            pp::platform::current_platform_family());
    }

    void update_platform_frame(float delta_time_seconds) override
    {
        (void)delta_time_seconds;
    }

    void report_rendered_frames(int frames) override
    {
#ifdef __LINUX__
        pp::platform::linux_desktop::report_rendered_frames(frames);
#else
        (void)frames;
#endif
    }

    void pick_image(pp::platform::PickedPathCallback callback) override
    {
#ifdef __IOS__
        pp::platform::apple::active_legacy_apple_document_platform_services().pick_image(std::move(callback));
#elif __OSX__
        pp::platform::apple::active_legacy_apple_document_platform_services().pick_image(std::move(callback));
#elif __ANDROID__
        android_pick_file(callback);
#elif __LINUX__
        if (auto p = tinyfd_openFileDialog("Open File", "", 0, nullptr, nullptr, false))
            invoke_picked_path_if_selected(p, callback);
#elif __WEB__
        webgl_pick_file(callback);
#else
        (void)callback;
#endif
    }

    void pick_file(std::vector<std::string> file_types, pp::platform::PickedPathCallback callback) override
    {
#ifdef __IOS__
        pp::platform::apple::active_legacy_apple_document_platform_services().pick_file(std::move(file_types), std::move(callback));
#elif __OSX__
        pp::platform::apple::active_legacy_apple_document_platform_services().pick_file(std::move(file_types), std::move(callback));
#elif __ANDROID__
        android_pick_file(callback);
#elif __LINUX__
        if (auto p = tinyfd_openFileDialog("Open File", "", 0, nullptr, nullptr, false))
            invoke_picked_path_if_selected(p, callback);
#elif __WEB__
        webgl_pick_file(callback);
#else
        (void)file_types;
        (void)callback;
#endif
    }

    void pick_save_file(std::vector<std::string> file_types, pp::platform::PickedPathCallback callback) override
    {
#if __OSX__
        pp::platform::apple::active_legacy_apple_document_platform_services().pick_save_file(std::move(file_types), std::move(callback));
#elif __ANDROID__
        android_pick_file_save(callback);
#else
        (void)file_types;
        (void)callback;
#endif
    }

    void pick_directory(pp::platform::PickedPathCallback callback) override
    {
#ifdef __IOS__
        (void)callback;
#elif __OSX__
        pp::platform::apple::active_legacy_apple_document_platform_services().pick_directory(std::move(callback));
#elif __ANDROID__
        (void)callback;
#else
        (void)callback;
#endif
    }

    [[nodiscard]] bool supports_working_directory_picker() override
    {
#if defined(__IOS__) || defined(__OSX__)
        return pp::platform::apple::active_legacy_apple_document_platform_services().supports_working_directory_picker();
#else
        return pp::platform::platform_supports_working_directory_picker(
            pp::platform::current_platform_family());
#endif
    }

    [[nodiscard]] std::string format_working_directory_path(std::string_view path) override
    {
#if defined(__IOS__) || defined(__OSX__)
        return pp::platform::apple::active_legacy_apple_document_platform_services().format_working_directory_path(path);
#endif
        return std::string(path);
    }

    [[nodiscard]] bool uses_prepared_file_writes() override
    {
        return pp::platform::platform_uses_prepared_file_writes(
            pp::platform::current_platform_family());
    }

    [[nodiscard]] bool uses_work_directory_document_export_collections() override
    {
        return pp::platform::platform_uses_work_directory_document_export_collections(
            pp::platform::current_platform_family());
    }

    [[nodiscard]] bool disables_network_tls_verification() override
    {
        return pp::platform::default_disables_network_tls_verification();
    }

    [[nodiscard]] bool uses_ppbr_export_data_directory_override() override
    {
        return pp::platform::platform_uses_ppbr_export_data_directory_override(
            pp::platform::current_platform_family());
    }

    [[nodiscard]] bool supports_sonarpen() override
    {
        return pp::platform::platform_supports_sonarpen(pp::platform::current_platform_family());
    }

    void start_sonarpen() override
    {
#if __IOS__
        pp::platform::apple::active_legacy_apple_document_platform_services().start_sonarpen();
#endif
    }

    [[nodiscard]] int default_canvas_resolution() override
    {
        const auto family = pp::platform::current_platform_family();
        if (pp::platform::legacy::handles_legacy_web_platform_family(family))
            return pp::platform::legacy::default_legacy_web_canvas_resolution();
        return pp::platform::platform_default_canvas_resolution(family);
    }

    [[nodiscard]] bool draws_canvas_tip_for_pointer(
        bool is_mouse,
        bool is_stylus,
        bool is_left_button_release) override
    {
        return pp::platform::platform_draws_canvas_tip_for_pointer(
            pp::platform::current_platform_family(),
            is_mouse,
            is_stylus,
            is_left_button_release);
    }

    [[nodiscard]] float adjust_canvas_input_pressure(float pressure) override
    {
        return pressure;
    }

    [[nodiscard]] pp::platform::PreparedFileTarget prepare_writable_file(
        std::string_view type,
        std::string_view default_name,
        std::string_view data_path,
        std::string_view temporary_path) override
    {
        return pp::platform::plan_platform_writable_file(
            pp::platform::current_platform_family(),
            type,
            default_name,
            data_path,
            temporary_path);
    }

    void display_file(std::string_view path) override
    {
#if defined(__IOS__) || defined(__OSX__)
        pp::platform::apple::active_legacy_apple_document_platform_services().display_file(path);
#else
        (void)path;
#endif
    }

    void share_file(std::string_view path) override
    {
#if defined(__IOS__) || defined(__OSX__)
        pp::platform::apple::active_legacy_apple_document_platform_services().share_file(path);
#else
        (void)path;
#endif
    }

    void request_app_close() override
    {
#ifdef __OSX__
        pp::platform::apple::active_legacy_apple_document_platform_services().request_app_close();
#elif __LINUX__
        pp::platform::legacy::request_legacy_glfw_app_close();
#endif
    }

    [[nodiscard]] bool start_vr_mode() override
    {
        return false;
    }

    void stop_vr_mode() override
    {
    }

    void save_prepared_file(
        std::string_view path,
        std::string_view suggested_name,
        pp::platform::PreparedFileCallback callback) override
    {
        const auto family = pp::platform::current_platform_family();
        if (pp::platform::legacy::handles_legacy_web_platform_family(family))
        {
            pp::platform::legacy::save_legacy_web_prepared_file(path, suggested_name, std::move(callback));
            return;
        }

        const std::string value(path);
        const std::string name(suggested_name);
#ifdef __IOS__
        pp::platform::apple::active_legacy_apple_document_platform_services().save_prepared_file(
            value,
            name,
            std::move(callback));
#else
        (void)name;
        callback(value, false);
#endif
    }
};

}

namespace pp::platform::legacy {

PlatformServices& platform_services()
{
    static LegacyPlatformServices services;
    return services;
}
}