#include "test_harness.h"

#include "platform_api/asset_file_load_policy.h"
#include "platform_api/network_tls_policy.h"
#include "platform_api/platform_policy.h"
#include "platform_api/platform_services.h"

#include <filesystem>
#include <fstream>
#include <string>
#include <string_view>
#include <utility>
#include <vector>

namespace {

class FakePlatformServices final : public pp::platform::PlatformServices {
public:
    explicit FakePlatformServices(std::string clipboard_value)
        : clipboard_value_(std::move(clipboard_value))
    {
    }

    [[nodiscard]] pp::platform::PlatformStoragePaths prepare_storage_paths() override
    {
        ++storage_prepares;
        return storage_paths;
    }

    void log_stacktrace() override
    {
        ++stacktrace_logs;
    }

    void trigger_crash_test() override
    {
        ++crash_tests;
    }

    [[nodiscard]] std::string clipboard_text() override
    {
        ++clipboard_reads;
        return clipboard_value_;
    }

    [[nodiscard]] bool set_clipboard_text(std::string_view text) override
    {
        ++clipboard_writes;
        clipboard_value_.assign(text);
        return true;
    }

    void set_cursor_visible(bool visible) override
    {
        ++cursor_updates;
        cursor_visible = visible;
    }

    void set_virtual_keyboard_visible(bool visible) override
    {
        ++keyboard_updates;
        keyboard_visible = visible;
    }

    void attach_ui_thread() override
    {
        ++ui_thread_attaches;
    }

    void detach_ui_thread() override
    {
        ++ui_thread_detaches;
    }

    void acquire_render_context() override
    {
        ++render_context_acquires;
    }

    void release_render_context() override
    {
        ++render_context_releases;
    }

    void present_render_context() override
    {
        ++render_context_presents;
    }

    void bind_default_render_target() override
    {
        ++default_render_target_binds;
    }

    void bind_main_render_target() override
    {
        ++main_render_target_binds;
    }

    void apply_render_platform_hints() override
    {
        ++render_platform_hint_applies;
    }

    void install_render_debug_callback() override
    {
        ++render_debug_callback_installs;
    }

    void begin_render_capture_frame() override
    {
        ++render_capture_begins;
    }

    void end_render_capture_frame() override
    {
        ++render_capture_ends;
    }

    [[nodiscard]] bool deletes_recorded_files_on_clear() override
    {
        ++recording_delete_policy_checks;
        return deletes_recorded_files;
    }

    void clear_recorded_files(std::string_view recording_path) override
    {
        ++recording_clears;
        cleared_recording_path.assign(recording_path);
    }

    void publish_exported_image(std::string_view path) override
    {
        ++exported_image_publishes;
        exported_image_path.assign(path);
    }

    void flush_persistent_storage() override
    {
        ++persistent_storage_flushes;
    }

    [[nodiscard]] std::vector<std::string> document_browse_roots(
        std::string_view work_path,
        std::string_view data_path) override
    {
        ++document_browse_root_requests;
        browse_work_path.assign(work_path);
        browse_data_path.assign(data_path);
        return browse_roots;
    }

    void save_ui_state() override
    {
        ++ui_state_saves;
    }

    [[nodiscard]] bool enables_live_asset_reloading() override
    {
        ++live_asset_reload_policy_checks;
        return live_asset_reloading;
    }

    void update_platform_frame(float delta_time_seconds) override
    {
        ++platform_frame_updates;
        last_platform_delta = delta_time_seconds;
    }

    void report_rendered_frames(int frames) override
    {
        ++frame_reports;
        last_frame_report = frames;
    }

    void display_file(std::string_view path) override
    {
        ++display_file_requests;
        displayed_path.assign(path);
    }

    void share_file(std::string_view path) override
    {
        ++share_file_requests;
        shared_path.assign(path);
    }

    void request_app_close() override
    {
        ++app_close_requests;
    }

    [[nodiscard]] bool start_vr_mode() override
    {
        ++vr_starts;
        return vr_start_success;
    }

    void stop_vr_mode() override
    {
        ++vr_stops;
    }

    void pick_image(pp::platform::PickedPathCallback callback) override
    {
        ++pick_image_requests;
        callback(picker_path);
    }

    void pick_file(std::vector<std::string> file_types, pp::platform::PickedPathCallback callback) override
    {
        ++pick_file_requests;
        picked_file_types = std::move(file_types);
        callback(picker_path);
    }

    void pick_save_file(std::vector<std::string> file_types, pp::platform::PickedPathCallback callback) override
    {
        ++pick_save_file_requests;
        save_file_types = std::move(file_types);
        callback(save_path);
    }

    void pick_directory(pp::platform::PickedPathCallback callback) override
    {
        ++pick_directory_requests;
        callback(directory_path);
    }

    [[nodiscard]] bool supports_working_directory_picker() override
    {
        ++working_directory_picker_support_checks;
        return working_directory_picker_supported;
    }

    [[nodiscard]] std::string format_working_directory_path(std::string_view path) override
    {
        ++working_directory_path_format_requests;
        last_working_directory_path.assign(path);
        return formatted_working_directory_path;
    }

    [[nodiscard]] bool uses_prepared_file_writes() override
    {
        ++prepared_file_write_policy_checks;
        return prepared_file_writes;
    }

    [[nodiscard]] bool uses_work_directory_document_export_collections() override
    {
        ++document_export_collection_policy_checks;
        return work_directory_document_export_collections;
    }

    [[nodiscard]] bool disables_network_tls_verification() override
    {
        ++network_tls_policy_checks;
        return network_tls_verification_disabled;
    }

    [[nodiscard]] bool uses_ppbr_export_data_directory_override() override
    {
        ++ppbr_export_data_directory_override_checks;
        return ppbr_export_data_directory_override;
    }

    [[nodiscard]] bool supports_sonarpen() override
    {
        ++sonarpen_support_checks;
        return sonarpen_supported;
    }

    void start_sonarpen() override
    {
        ++sonarpen_starts;
    }

    [[nodiscard]] int default_canvas_resolution() override
    {
        ++default_canvas_resolution_requests;
        return canvas_resolution;
    }

    [[nodiscard]] bool draws_canvas_tip_for_pointer(
        bool is_mouse,
        bool is_stylus,
        bool is_left_button_release) override
    {
        ++canvas_tip_policy_checks;
        last_canvas_tip_mouse = is_mouse;
        last_canvas_tip_stylus = is_stylus;
        last_canvas_tip_left_release = is_left_button_release;
        return canvas_tip_visible;
    }

    [[nodiscard]] float adjust_canvas_input_pressure(float pressure) override
    {
        ++canvas_pressure_adjustments;
        last_canvas_pressure = pressure;
        return adjusted_canvas_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
    {
        ++prepare_writable_file_requests;
        writable_file_type.assign(type);
        writable_file_default_name.assign(default_name);
        writable_file_data_path.assign(data_path);
        writable_file_temporary_path.assign(temporary_path);
        return writable_file_target;
    }

    void save_prepared_file(
        std::string_view path,
        std::string_view suggested_name,
        pp::platform::PreparedFileCallback callback) override
    {
        ++save_prepared_file_requests;
        prepared_file_path.assign(path);
        prepared_file_name.assign(suggested_name);
        callback(prepared_file_path, prepared_file_saved);
    }

    int clipboard_reads = 0;
    int clipboard_writes = 0;
    int cursor_updates = 0;
    int keyboard_updates = 0;
    int ui_thread_attaches = 0;
    int ui_thread_detaches = 0;
    int render_context_acquires = 0;
    int render_context_releases = 0;
    int render_context_presents = 0;
    int default_render_target_binds = 0;
    int main_render_target_binds = 0;
    int render_platform_hint_applies = 0;
    int render_debug_callback_installs = 0;
    int render_capture_begins = 0;
    int render_capture_ends = 0;
    int storage_prepares = 0;
    int stacktrace_logs = 0;
    int crash_tests = 0;
    int recording_delete_policy_checks = 0;
    int recording_clears = 0;
    int exported_image_publishes = 0;
    int persistent_storage_flushes = 0;
    int document_browse_root_requests = 0;
    int ui_state_saves = 0;
    int live_asset_reload_policy_checks = 0;
    int platform_frame_updates = 0;
    int frame_reports = 0;
    int display_file_requests = 0;
    int share_file_requests = 0;
    int app_close_requests = 0;
    int vr_starts = 0;
    int vr_stops = 0;
    int pick_image_requests = 0;
    int pick_file_requests = 0;
    int pick_save_file_requests = 0;
    int pick_directory_requests = 0;
    int working_directory_picker_support_checks = 0;
    int working_directory_path_format_requests = 0;
    int prepared_file_write_policy_checks = 0;
    int document_export_collection_policy_checks = 0;
    int network_tls_policy_checks = 0;
    int ppbr_export_data_directory_override_checks = 0;
    int sonarpen_support_checks = 0;
    int sonarpen_starts = 0;
    int default_canvas_resolution_requests = 0;
    int canvas_tip_policy_checks = 0;
    int canvas_pressure_adjustments = 0;
    int prepare_writable_file_requests = 0;
    int save_prepared_file_requests = 0;
    bool cursor_visible = false;
    bool keyboard_visible = false;
    bool prepared_file_saved = true;
    bool vr_start_success = false;
    bool prepared_file_writes = true;
    bool working_directory_picker_supported = false;
    bool work_directory_document_export_collections = false;
    bool network_tls_verification_disabled = false;
    bool ppbr_export_data_directory_override = false;
    bool sonarpen_supported = false;
    int canvas_resolution = 1536;
    bool canvas_tip_visible = false;
    bool last_canvas_tip_mouse = false;
    bool last_canvas_tip_stylus = false;
    bool last_canvas_tip_left_release = false;
    bool deletes_recorded_files = true;
    bool live_asset_reloading = true;
    float last_platform_delta = 0.0f;
    float last_canvas_pressure = 0.0f;
    float adjusted_canvas_pressure = 0.75f;
    int last_frame_report = 0;
    std::string displayed_path;
    std::string shared_path;
    std::string prepared_file_path;
    std::string prepared_file_name;
    std::string cleared_recording_path;
    std::string exported_image_path;
    std::string browse_work_path;
    std::string browse_data_path;
    std::string writable_file_type;
    std::string writable_file_default_name;
    std::string writable_file_data_path;
    std::string writable_file_temporary_path;
    std::string picker_path = "D:/Paint/import.png";
    std::string save_path = "D:/Paint/export.ppi";
    std::string directory_path = "D:/Paint";
    std::string last_working_directory_path;
    std::string formatted_working_directory_path = "D:/Paint/Absolute";
    pp::platform::PlatformStoragePaths storage_paths{
        "D:/Paint",
        "D:/Paint/work",
        "D:/Paint/frames",
        "D:/Paint/tmp",
    };
    std::vector<std::string> picked_file_types;
    std::vector<std::string> save_file_types;
    std::vector<std::string> browse_roots = {
        "D:/Paint/work",
        "D:/Paint/Inbox",
    };
    pp::platform::PreparedFileTarget writable_file_target{
        "D:/Paint/tmp/export.mp4",
        "export.mp4",
        true,
    };

private:
    std::string clipboard_value_;
};

void platform_services_dispatch_clipboard_reads_and_writes(pp::tests::Harness& harness)
{
    FakePlatformServices fake("#112233");
    pp::platform::PlatformServices& services = fake;

    PP_EXPECT(harness, services.clipboard_text() == "#112233");
    PP_EXPECT(harness, services.set_clipboard_text("#ff00aa"));
    PP_EXPECT(harness, services.clipboard_text() == "#ff00aa");
    PP_EXPECT(harness, fake.clipboard_reads == 2);
    PP_EXPECT(harness, fake.clipboard_writes == 1);
}

void platform_services_dispatch_storage_path_preparation(pp::tests::Harness& harness)
{
    FakePlatformServices fake("unused");
    pp::platform::PlatformServices& services = fake;

    const auto paths = services.prepare_storage_paths();

    PP_EXPECT(harness, fake.storage_prepares == 1);
    PP_EXPECT(harness, paths.data_path == "D:/Paint");
    PP_EXPECT(harness, paths.work_path == "D:/Paint/work");
    PP_EXPECT(harness, paths.recording_path == "D:/Paint/frames");
    PP_EXPECT(harness, paths.temporary_path == "D:/Paint/tmp");
}

void platform_services_dispatch_diagnostics(pp::tests::Harness& harness)
{
    FakePlatformServices fake("unused");
    pp::platform::PlatformServices& services = fake;

    services.log_stacktrace();
    services.trigger_crash_test();

    PP_EXPECT(harness, fake.stacktrace_logs == 1);
    PP_EXPECT(harness, fake.crash_tests == 1);
}

void platform_services_preserve_empty_clipboard_writes(pp::tests::Harness& harness)
{
    FakePlatformServices fake("initial");
    pp::platform::PlatformServices& services = fake;

    PP_EXPECT(harness, services.set_clipboard_text(""));
    PP_EXPECT(harness, services.clipboard_text().empty());
    PP_EXPECT(harness, fake.clipboard_writes == 1);
}

void platform_services_dispatch_visibility_updates(pp::tests::Harness& harness)
{
    FakePlatformServices fake("unused");
    pp::platform::PlatformServices& services = fake;

    services.set_cursor_visible(true);
    services.set_virtual_keyboard_visible(true);
    services.set_cursor_visible(false);
    services.set_virtual_keyboard_visible(false);

    PP_EXPECT(harness, fake.cursor_updates == 2);
    PP_EXPECT(harness, fake.keyboard_updates == 2);
    PP_EXPECT(harness, !fake.cursor_visible);
    PP_EXPECT(harness, !fake.keyboard_visible);
}

void platform_services_dispatch_ui_thread_lifecycle(pp::tests::Harness& harness)
{
    FakePlatformServices fake("unused");
    pp::platform::PlatformServices& services = fake;

    services.attach_ui_thread();
    services.detach_ui_thread();

    PP_EXPECT(harness, fake.ui_thread_attaches == 1);
    PP_EXPECT(harness, fake.ui_thread_detaches == 1);
}

void platform_services_dispatch_render_context_lifecycle(pp::tests::Harness& harness)
{
    FakePlatformServices fake("unused");
    pp::platform::PlatformServices& services = fake;

    services.acquire_render_context();
    services.present_render_context();
    services.bind_default_render_target();
    services.bind_main_render_target();
    services.apply_render_platform_hints();
    services.install_render_debug_callback();
    services.release_render_context();

    PP_EXPECT(harness, fake.render_context_acquires == 1);
    PP_EXPECT(harness, fake.render_context_presents == 1);
    PP_EXPECT(harness, fake.default_render_target_binds == 1);
    PP_EXPECT(harness, fake.main_render_target_binds == 1);
    PP_EXPECT(harness, fake.render_platform_hint_applies == 1);
    PP_EXPECT(harness, fake.render_debug_callback_installs == 1);
    PP_EXPECT(harness, fake.render_context_releases == 1);
}

void platform_services_dispatch_render_capture_hooks(pp::tests::Harness& harness)
{
    FakePlatformServices fake("unused");
    pp::platform::PlatformServices& services = fake;

    services.begin_render_capture_frame();
    services.end_render_capture_frame();

    PP_EXPECT(harness, fake.render_capture_begins == 1);
    PP_EXPECT(harness, fake.render_capture_ends == 1);
}

void platform_services_dispatch_recording_cleanup(pp::tests::Harness& harness)
{
    FakePlatformServices fake("unused");
    pp::platform::PlatformServices& services = fake;

    PP_EXPECT(harness, services.deletes_recorded_files_on_clear());
    services.clear_recorded_files("D:/Paint/frames");

    PP_EXPECT(harness, fake.recording_delete_policy_checks == 1);
    PP_EXPECT(harness, fake.recording_clears == 1);
    PP_EXPECT(harness, fake.cleared_recording_path == "D:/Paint/frames");
}

void platform_services_dispatch_exported_image_and_storage_flush(pp::tests::Harness& harness)
{
    FakePlatformServices fake("unused");
    pp::platform::PlatformServices& services = fake;

    services.publish_exported_image("D:/Paint/export.png");
    services.flush_persistent_storage();

    PP_EXPECT(harness, fake.exported_image_publishes == 1);
    PP_EXPECT(harness, fake.exported_image_path == "D:/Paint/export.png");
    PP_EXPECT(harness, fake.persistent_storage_flushes == 1);
}

void platform_services_dispatch_document_browse_roots(pp::tests::Harness& harness)
{
    FakePlatformServices fake("unused");
    pp::platform::PlatformServices& services = fake;

    const auto roots = services.document_browse_roots("D:/Paint/work", "D:/Paint");

    PP_EXPECT(harness, fake.document_browse_root_requests == 1);
    PP_EXPECT(harness, fake.browse_work_path == "D:/Paint/work");
    PP_EXPECT(harness, fake.browse_data_path == "D:/Paint");
    PP_EXPECT(harness, roots.size() == 2);
    PP_EXPECT(harness, roots[0] == "D:/Paint/work");
    PP_EXPECT(harness, roots[1] == "D:/Paint/Inbox");
}

void platform_services_dispatch_ui_state_save(pp::tests::Harness& harness)
{
    FakePlatformServices fake("unused");
    pp::platform::PlatformServices& services = fake;

    services.save_ui_state();

    PP_EXPECT(harness, fake.ui_state_saves == 1);
}

void platform_services_dispatch_live_asset_reload_policy(pp::tests::Harness& harness)
{
    FakePlatformServices fake("unused");
    pp::platform::PlatformServices& services = fake;

    PP_EXPECT(harness, services.enables_live_asset_reloading());
    fake.live_asset_reloading = false;
    PP_EXPECT(harness, !services.enables_live_asset_reloading());

    PP_EXPECT(harness, fake.live_asset_reload_policy_checks == 2);
}

void platform_services_dispatch_frame_hooks(pp::tests::Harness& harness)
{
    FakePlatformServices fake("unused");
    pp::platform::PlatformServices& services = fake;

    services.update_platform_frame(0.125f);
    services.report_rendered_frames(42);

    PP_EXPECT(harness, fake.platform_frame_updates == 1);
    PP_EXPECT(harness, fake.last_platform_delta == 0.125f);
    PP_EXPECT(harness, fake.frame_reports == 1);
    PP_EXPECT(harness, fake.last_frame_report == 42);
}

void platform_services_dispatch_file_actions(pp::tests::Harness& harness)
{
    FakePlatformServices fake("unused");
    pp::platform::PlatformServices& services = fake;

    services.display_file("D:/Paint/export.png");
    services.share_file("D:/Paint/demo.ppi");
    services.request_app_close();

    PP_EXPECT(harness, fake.display_file_requests == 1);
    PP_EXPECT(harness, fake.share_file_requests == 1);
    PP_EXPECT(harness, fake.app_close_requests == 1);
    PP_EXPECT(harness, fake.displayed_path == "D:/Paint/export.png");
    PP_EXPECT(harness, fake.shared_path == "D:/Paint/demo.ppi");
}

void platform_services_dispatch_vr_lifecycle(pp::tests::Harness& harness)
{
    FakePlatformServices fake("unused");
    pp::platform::PlatformServices& services = fake;

    PP_EXPECT(harness, !services.start_vr_mode());
    fake.vr_start_success = true;
    PP_EXPECT(harness, services.start_vr_mode());
    services.stop_vr_mode();

    PP_EXPECT(harness, fake.vr_starts == 2);
    PP_EXPECT(harness, fake.vr_stops == 1);
}

void platform_services_dispatch_picker_callbacks(pp::tests::Harness& harness)
{
    FakePlatformServices fake("unused");
    pp::platform::PlatformServices& services = fake;
    std::string image_path;
    std::string file_path;
    std::string save_path;
    std::string directory_path;

    services.pick_image([&](std::string path) { image_path = std::move(path); });
    services.pick_file({ "ppi", "ppbr" }, [&](std::string path) { file_path = std::move(path); });
    services.pick_save_file({ "ppi" }, [&](std::string path) { save_path = std::move(path); });
    services.pick_directory([&](std::string path) { directory_path = std::move(path); });

    PP_EXPECT(harness, fake.pick_image_requests == 1);
    PP_EXPECT(harness, fake.pick_file_requests == 1);
    PP_EXPECT(harness, fake.pick_save_file_requests == 1);
    PP_EXPECT(harness, fake.pick_directory_requests == 1);
    PP_EXPECT(harness, image_path == "D:/Paint/import.png");
    PP_EXPECT(harness, file_path == "D:/Paint/import.png");
    PP_EXPECT(harness, save_path == "D:/Paint/export.ppi");
    PP_EXPECT(harness, directory_path == "D:/Paint");
    PP_EXPECT(harness, fake.picked_file_types.size() == 2);
    PP_EXPECT(harness, fake.save_file_types.size() == 1);
}

void platform_services_dispatch_working_directory_picker_policy(pp::tests::Harness& harness)
{
    FakePlatformServices fake("unused");
    pp::platform::PlatformServices& services = fake;

    PP_EXPECT(harness, !services.supports_working_directory_picker());
    fake.working_directory_picker_supported = true;
    PP_EXPECT(harness, services.supports_working_directory_picker());

    const auto formatted = services.format_working_directory_path("D:/Paint");
    PP_EXPECT(harness, formatted == "D:/Paint/Absolute");
    PP_EXPECT(harness, fake.last_working_directory_path == "D:/Paint");
    PP_EXPECT(harness, fake.working_directory_picker_support_checks == 2);
    PP_EXPECT(harness, fake.working_directory_path_format_requests == 1);
}

void platform_services_dispatch_prepared_file_save(pp::tests::Harness& harness)
{
    FakePlatformServices fake("unused");
    pp::platform::PlatformServices& services = fake;
    std::string saved_path;
    bool saved = false;

    services.save_prepared_file(
        "D:/Paint/export.mp4",
        "export.mp4",
        [&](std::string path, bool success) {
            saved_path = std::move(path);
            saved = success;
        });

    PP_EXPECT(harness, fake.save_prepared_file_requests == 1);
    PP_EXPECT(harness, fake.prepared_file_path == "D:/Paint/export.mp4");
    PP_EXPECT(harness, fake.prepared_file_name == "export.mp4");
    PP_EXPECT(harness, saved_path == "D:/Paint/export.mp4");
    PP_EXPECT(harness, saved);
}

void platform_services_dispatch_writable_file_target(pp::tests::Harness& harness)
{
    FakePlatformServices fake("unused");
    pp::platform::PlatformServices& services = fake;

    PP_EXPECT(harness, services.uses_prepared_file_writes());
    fake.prepared_file_writes = false;
    PP_EXPECT(harness, !services.uses_prepared_file_writes());
    fake.prepared_file_writes = true;

    const auto target = services.prepare_writable_file("mp4", "export", "D:/Paint", "D:/Paint/tmp");

    PP_EXPECT(harness, fake.prepared_file_write_policy_checks == 2);
    PP_EXPECT(harness, fake.prepare_writable_file_requests == 1);
    PP_EXPECT(harness, fake.writable_file_type == "mp4");
    PP_EXPECT(harness, fake.writable_file_default_name == "export");
    PP_EXPECT(harness, fake.writable_file_data_path == "D:/Paint");
    PP_EXPECT(harness, fake.writable_file_temporary_path == "D:/Paint/tmp");
    PP_EXPECT(harness, target.path == "D:/Paint/tmp/export.mp4");
    PP_EXPECT(harness, target.suggested_name == "export.mp4");
    PP_EXPECT(harness, target.write_on_background_thread);
}

void platform_services_dispatch_document_export_collection_policy(pp::tests::Harness& harness)
{
    FakePlatformServices fake("unused");
    pp::platform::PlatformServices& services = fake;

    PP_EXPECT(harness, !services.uses_work_directory_document_export_collections());
    fake.work_directory_document_export_collections = true;
    PP_EXPECT(harness, services.uses_work_directory_document_export_collections());
    PP_EXPECT(harness, fake.document_export_collection_policy_checks == 2);
}

void platform_services_dispatch_network_tls_policy(pp::tests::Harness& harness)
{
    FakePlatformServices fake("unused");
    pp::platform::PlatformServices& services = fake;

    PP_EXPECT(harness, !services.disables_network_tls_verification());
    fake.network_tls_verification_disabled = true;
    PP_EXPECT(harness, services.disables_network_tls_verification());
    PP_EXPECT(harness, fake.network_tls_policy_checks == 2);
}

void default_network_tls_policy_matches_build_target(pp::tests::Harness& harness)
{
#if defined(__ANDROID__)
    PP_EXPECT(harness, pp::platform::default_disables_network_tls_verification());
#else
    PP_EXPECT(harness, !pp::platform::default_disables_network_tls_verification());
#endif
}

void asset_file_load_policy_preserves_platform_reload_behavior(pp::tests::Harness& harness)
{
    const auto temp_path = std::filesystem::temp_directory_path()
        / "panopainter-platform-api-file-policy.xml";
    {
        std::ofstream file(temp_path);
        file << "<layouts />";
    }

    const auto first_load = pp::platform::plan_asset_file_load(
        temp_path.string(),
        false,
        0);
    PP_EXPECT(harness, first_load.should_read_file);
    PP_EXPECT(harness, first_load.skipped_load_result);

    const auto repeated_load = pp::platform::plan_asset_file_load(
        temp_path.string(),
        true,
        first_load.last_write_time);
    PP_EXPECT(harness, !repeated_load.should_read_file);
#if defined(_WIN32) || defined(__OSX__)
    PP_EXPECT(harness, !repeated_load.skipped_load_result);
#else
    PP_EXPECT(harness, repeated_load.skipped_load_result);
#endif

    std::filesystem::remove(temp_path);
}

void asset_file_load_policy_preserves_family_reload_behavior(pp::tests::Harness& harness)
{
    const auto missing_desktop = pp::platform::plan_asset_file_load_with_probe(
        pp::platform::PlatformFamily::windows,
        false,
        7,
        {});
    PP_EXPECT(harness, !missing_desktop.should_read_file);
    PP_EXPECT(harness, !missing_desktop.skipped_load_result);
    PP_EXPECT(harness, missing_desktop.last_write_time == 7);

    const auto stale_desktop = pp::platform::plan_asset_file_load_with_probe(
        pp::platform::PlatformFamily::macos,
        true,
        7,
        { true, 7 });
    PP_EXPECT(harness, !stale_desktop.should_read_file);
    PP_EXPECT(harness, !stale_desktop.skipped_load_result);
    PP_EXPECT(harness, stale_desktop.last_write_time == 7);

    const auto fresh_desktop = pp::platform::plan_asset_file_load_with_probe(
        pp::platform::PlatformFamily::windows,
        true,
        7,
        { true, 8 });
    PP_EXPECT(harness, fresh_desktop.should_read_file);
    PP_EXPECT(harness, fresh_desktop.skipped_load_result);
    PP_EXPECT(harness, fresh_desktop.last_write_time == 8);

    const auto first_mobile = pp::platform::plan_asset_file_load_with_probe(
        pp::platform::PlatformFamily::ios,
        false,
        7,
        {});
    PP_EXPECT(harness, first_mobile.should_read_file);
    PP_EXPECT(harness, first_mobile.skipped_load_result);
    PP_EXPECT(harness, first_mobile.last_write_time == 7);

    const auto repeated_web = pp::platform::plan_asset_file_load_with_probe(
        pp::platform::PlatformFamily::webgl,
        true,
        7,
        { true, 99 });
    PP_EXPECT(harness, !repeated_web.should_read_file);
    PP_EXPECT(harness, repeated_web.skipped_load_result);
    PP_EXPECT(harness, repeated_web.last_write_time == 7);
}

void platform_services_dispatch_ppbr_export_directory_policy(pp::tests::Harness& harness)
{
    FakePlatformServices fake("unused");
    pp::platform::PlatformServices& services = fake;

    PP_EXPECT(harness, !services.uses_ppbr_export_data_directory_override());
    fake.ppbr_export_data_directory_override = true;
    PP_EXPECT(harness, services.uses_ppbr_export_data_directory_override());
    PP_EXPECT(harness, fake.ppbr_export_data_directory_override_checks == 2);
}

void platform_services_dispatch_sonarpen_policy_and_start(pp::tests::Harness& harness)
{
    FakePlatformServices fake("unused");
    pp::platform::PlatformServices& services = fake;

    PP_EXPECT(harness, !services.supports_sonarpen());
    fake.sonarpen_supported = true;
    PP_EXPECT(harness, services.supports_sonarpen());
    services.start_sonarpen();

    PP_EXPECT(harness, fake.sonarpen_support_checks == 2);
    PP_EXPECT(harness, fake.sonarpen_starts == 1);
}

void platform_services_dispatch_default_canvas_resolution(pp::tests::Harness& harness)
{
    FakePlatformServices fake("unused");
    pp::platform::PlatformServices& services = fake;

    PP_EXPECT(harness, services.default_canvas_resolution() == 1536);
    fake.canvas_resolution = 512;
    PP_EXPECT(harness, services.default_canvas_resolution() == 512);
    PP_EXPECT(harness, fake.default_canvas_resolution_requests == 2);
}

void platform_services_dispatch_canvas_input_policy(pp::tests::Harness& harness)
{
    FakePlatformServices fake("unused");
    pp::platform::PlatformServices& services = fake;

    PP_EXPECT(harness, !services.draws_canvas_tip_for_pointer(true, false, true));
    fake.canvas_tip_visible = true;
    PP_EXPECT(harness, services.draws_canvas_tip_for_pointer(false, true, false));
    PP_EXPECT(harness, fake.canvas_tip_policy_checks == 2);
    PP_EXPECT(harness, !fake.last_canvas_tip_mouse);
    PP_EXPECT(harness, fake.last_canvas_tip_stylus);
    PP_EXPECT(harness, !fake.last_canvas_tip_left_release);

    const auto pressure = services.adjust_canvas_input_pressure(0.5f);
    PP_EXPECT(harness, pressure == 0.75f);
    PP_EXPECT(harness, fake.last_canvas_pressure == 0.5f);
    PP_EXPECT(harness, fake.canvas_pressure_adjustments == 1);
}

void platform_policy_preserves_recording_and_export_storage_rules(pp::tests::Harness& harness)
{
    PP_EXPECT(harness, pp::platform::platform_deletes_recorded_files_on_clear(pp::platform::PlatformFamily::ios));
    PP_EXPECT(harness, pp::platform::platform_deletes_recorded_files_on_clear(pp::platform::PlatformFamily::macos));
    PP_EXPECT(harness, !pp::platform::platform_deletes_recorded_files_on_clear(pp::platform::PlatformFamily::windows));
    PP_EXPECT(harness, pp::platform::platform_publishes_exported_images(pp::platform::PlatformFamily::ios));
    PP_EXPECT(harness, !pp::platform::platform_publishes_exported_images(pp::platform::PlatformFamily::macos));
    PP_EXPECT(harness, pp::platform::platform_flushes_persistent_storage(pp::platform::PlatformFamily::webgl));
    PP_EXPECT(harness, !pp::platform::platform_flushes_persistent_storage(pp::platform::PlatformFamily::windows));
}

void platform_policy_preserves_document_browse_roots(pp::tests::Harness& harness)
{
    const auto ios_roots = pp::platform::platform_document_browse_roots(
        pp::platform::PlatformFamily::ios,
        "D:/Paint/work",
        "D:/Paint");
    const auto desktop_roots = pp::platform::platform_document_browse_roots(
        pp::platform::PlatformFamily::windows,
        "D:/Paint/work",
        "D:/Paint");

    PP_EXPECT(harness, ios_roots.size() == 2);
    PP_EXPECT(harness, ios_roots[0] == "D:/Paint/work");
    PP_EXPECT(harness, ios_roots[1] == "D:/Paint/Inbox");
    PP_EXPECT(harness, desktop_roots.size() == 1);
    PP_EXPECT(harness, desktop_roots[0] == "D:/Paint/work");
}

void platform_policy_preserves_picker_and_prepared_file_rules(pp::tests::Harness& harness)
{
    PP_EXPECT(harness, pp::platform::platform_supports_working_directory_picker(pp::platform::PlatformFamily::windows));
    PP_EXPECT(harness, pp::platform::platform_supports_working_directory_picker(pp::platform::PlatformFamily::macos));
    PP_EXPECT(harness, !pp::platform::platform_supports_working_directory_picker(pp::platform::PlatformFamily::ios));
    PP_EXPECT(harness, pp::platform::platform_uses_prepared_file_writes(pp::platform::PlatformFamily::ios));
    PP_EXPECT(harness, pp::platform::platform_uses_prepared_file_writes(pp::platform::PlatformFamily::webgl));
    PP_EXPECT(harness, !pp::platform::platform_uses_prepared_file_writes(pp::platform::PlatformFamily::windows));
    PP_EXPECT(harness, pp::platform::platform_uses_work_directory_document_export_collections(pp::platform::PlatformFamily::ios));
    PP_EXPECT(harness, !pp::platform::platform_uses_work_directory_document_export_collections(pp::platform::PlatformFamily::webgl));

    const auto ios_target = pp::platform::plan_platform_writable_file(
        pp::platform::PlatformFamily::ios,
        "mp4",
        "timelapse",
        "/PanoPainter",
        "/tmp");
    PP_EXPECT(harness, ios_target.path == "/tmp/timelapse.mp4");
    PP_EXPECT(harness, ios_target.suggested_name == "timelapse.mp4");
    PP_EXPECT(harness, ios_target.write_on_background_thread);

    const auto web_target = pp::platform::plan_platform_writable_file(
        pp::platform::PlatformFamily::webgl,
        "png",
        "export",
        "/PanoPainter",
        "/tmp");
    PP_EXPECT(harness, web_target.path == "/PanoPainter/export.png");
    PP_EXPECT(harness, web_target.suggested_name == "export.png");
    PP_EXPECT(harness, !web_target.write_on_background_thread);

    const auto desktop_target = pp::platform::plan_platform_writable_file(
        pp::platform::PlatformFamily::windows,
        "png",
        "export",
        "/PanoPainter",
        "/tmp");
    PP_EXPECT(harness, desktop_target.path.empty());
    PP_EXPECT(harness, desktop_target.suggested_name.empty());
}

void platform_policy_preserves_ui_asset_and_input_rules(pp::tests::Harness& harness)
{
    PP_EXPECT(harness, pp::platform::platform_enables_live_asset_reloading(pp::platform::PlatformFamily::windows));
    PP_EXPECT(harness, pp::platform::platform_enables_live_asset_reloading(pp::platform::PlatformFamily::macos));
    PP_EXPECT(harness, !pp::platform::platform_enables_live_asset_reloading(pp::platform::PlatformFamily::ios));
    PP_EXPECT(harness, pp::platform::platform_uses_asset_file_mtime_reload(pp::platform::PlatformFamily::windows));
    PP_EXPECT(harness, pp::platform::platform_uses_asset_file_mtime_reload(pp::platform::PlatformFamily::macos));
    PP_EXPECT(harness, !pp::platform::platform_uses_asset_file_mtime_reload(pp::platform::PlatformFamily::android));
    PP_EXPECT(harness, pp::platform::platform_saves_native_ui_state(pp::platform::PlatformFamily::windows));
    PP_EXPECT(harness, pp::platform::platform_saves_native_ui_state(pp::platform::PlatformFamily::macos));
    PP_EXPECT(harness, !pp::platform::platform_saves_native_ui_state(pp::platform::PlatformFamily::webgl));
    PP_EXPECT(harness, pp::platform::platform_uses_ppbr_export_data_directory_override(pp::platform::PlatformFamily::macos));
    PP_EXPECT(harness, !pp::platform::platform_uses_ppbr_export_data_directory_override(pp::platform::PlatformFamily::windows));
    PP_EXPECT(harness, pp::platform::platform_supports_sonarpen(pp::platform::PlatformFamily::ios));
    PP_EXPECT(harness, !pp::platform::platform_supports_sonarpen(pp::platform::PlatformFamily::android));
    PP_EXPECT(harness, pp::platform::platform_default_canvas_resolution(pp::platform::PlatformFamily::webgl) == 512);
    PP_EXPECT(harness, pp::platform::platform_default_canvas_resolution(pp::platform::PlatformFamily::windows) == 1536);
    PP_EXPECT(harness, pp::platform::platform_draws_canvas_tip_for_pointer(
        pp::platform::PlatformFamily::ios,
        true,
        false,
        false));
    PP_EXPECT(harness, !pp::platform::platform_draws_canvas_tip_for_pointer(
        pp::platform::PlatformFamily::ios,
        true,
        false,
        true));
    PP_EXPECT(harness, pp::platform::platform_draws_canvas_tip_for_pointer(
        pp::platform::PlatformFamily::windows,
        false,
        true,
        true));
}

}

int main()
{
    pp::tests::Harness harness;
    harness.run("platform services dispatch storage path preparation", platform_services_dispatch_storage_path_preparation);
    harness.run("platform services dispatch diagnostics", platform_services_dispatch_diagnostics);
    harness.run("platform services dispatch clipboard reads and writes", platform_services_dispatch_clipboard_reads_and_writes);
    harness.run("platform services preserve empty clipboard writes", platform_services_preserve_empty_clipboard_writes);
    harness.run("platform services dispatch visibility updates", platform_services_dispatch_visibility_updates);
    harness.run("platform services dispatch UI thread lifecycle", platform_services_dispatch_ui_thread_lifecycle);
    harness.run("platform services dispatch render context lifecycle", platform_services_dispatch_render_context_lifecycle);
    harness.run("platform services dispatch render capture hooks", platform_services_dispatch_render_capture_hooks);
    harness.run("platform services dispatch recording cleanup", platform_services_dispatch_recording_cleanup);
    harness.run("platform services dispatch exported image and storage flush", platform_services_dispatch_exported_image_and_storage_flush);
    harness.run("platform services dispatch document browse roots", platform_services_dispatch_document_browse_roots);
    harness.run("platform services dispatch UI state save", platform_services_dispatch_ui_state_save);
    harness.run("platform services dispatch live asset reload policy", platform_services_dispatch_live_asset_reload_policy);
    harness.run("platform services dispatch frame hooks", platform_services_dispatch_frame_hooks);
    harness.run("platform services dispatch file actions", platform_services_dispatch_file_actions);
    harness.run("platform services dispatch VR lifecycle", platform_services_dispatch_vr_lifecycle);
    harness.run("platform services dispatch picker callbacks", platform_services_dispatch_picker_callbacks);
    harness.run(
        "platform services dispatch working directory picker policy",
        platform_services_dispatch_working_directory_picker_policy);
    harness.run("platform services dispatch prepared file save", platform_services_dispatch_prepared_file_save);
    harness.run("platform services dispatch writable file target", platform_services_dispatch_writable_file_target);
    harness.run(
        "platform services dispatch document export collection policy",
        platform_services_dispatch_document_export_collection_policy);
    harness.run("platform services dispatch network tls policy", platform_services_dispatch_network_tls_policy);
    harness.run("default network tls policy matches build target", default_network_tls_policy_matches_build_target);
    harness.run(
        "asset file load policy preserves platform reload behavior",
        asset_file_load_policy_preserves_platform_reload_behavior);
    harness.run(
        "asset file load policy preserves family reload behavior",
        asset_file_load_policy_preserves_family_reload_behavior);
    harness.run(
        "platform services dispatch ppbr export directory policy",
        platform_services_dispatch_ppbr_export_directory_policy);
    harness.run("platform services dispatch sonarpen policy and start", platform_services_dispatch_sonarpen_policy_and_start);
    harness.run("platform services dispatch default canvas resolution", platform_services_dispatch_default_canvas_resolution);
    harness.run("platform services dispatch canvas input policy", platform_services_dispatch_canvas_input_policy);
    harness.run(
        "platform policy preserves recording and export storage rules",
        platform_policy_preserves_recording_and_export_storage_rules);
    harness.run("platform policy preserves document browse roots", platform_policy_preserves_document_browse_roots);
    harness.run(
        "platform policy preserves picker and prepared file rules",
        platform_policy_preserves_picker_and_prepared_file_rules);
    harness.run(
        "platform policy preserves UI asset and input rules",
        platform_policy_preserves_ui_asset_and_input_rules);
    return harness.finish();
}