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

#include "app.h"
#include "app_core/document_platform_io.h"
#include "platform_api/network_tls_policy.h"
#include "renderer_gl/opengl_capabilities.h"

#ifdef __ANDROID__
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__
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>
std::string linux_home_path();
int mkpath(const std::string& dir, mode_t mode = DEFFILEMODE);
void linux_update_fps(int frames);
#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 {

void invoke_picked_path_if_selected(
    const std::string& path,
    const std::function<void(std::string path)>& callback)
{
    if (pp::app::plan_picked_path(path) == pp::app::PickedPathAction::invoke_callback)
        callback(path);
}

// 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__)
        [App::I->ios_view init_dirs];
        return {
            App::I->data_path,
            App::I->work_path,
            App::I->rec_path,
            App::I->tmp_path,
        };
#elif defined(__OSX__)
        [App::I->osx_app init_dirs];
        return {
            App::I->data_path,
            App::I->work_path,
            App::I->rec_path,
            App::I->tmp_path,
        };
#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 {
            App::I->data_path,
            App::I->work_path,
            App::I->rec_path,
            App::I->tmp_path,
        };
#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__
        [App::I->ios_view crash];
#elif __OSX__
        [App::I->osx_view hockeyapp_crash];
#elif defined(__ANDROID__)
        int *x = nullptr; *x = 42;
        LOG("%d", *x);
#endif
    }

    [[nodiscard]] std::string clipboard_text() override
    {
#if __IOS__
        return [App::I->ios_view clipboard_get_string];
#elif __OSX__
        return [App::I->osx_view clipboard_get_string];
#elif __ANDROID__
        return android_get_clipboard();
#else
        return {};
#endif
    }

    [[nodiscard]] bool set_clipboard_text(std::string_view text) override
    {
        const std::string value(text);
#if __IOS__
        return [App::I->ios_view clipboard_set_string:value];
#elif __OSX__
        return [App::I->osx_view clipboard_set_string:value];
#elif __ANDROID__
        return android_set_clipboard(value);
#else
        return false;
#endif
    }

    void set_cursor_visible(bool visible) override
    {
#ifdef __OSX__
        [App::I->osx_view show_cursor:visible];
#else
        (void)visible;
#endif
    }

    void set_virtual_keyboard_visible(bool visible) override
    {
#ifdef __IOS__
        dispatch_async(dispatch_get_main_queue(), ^{
            if (visible)
                [App::I->ios_view show_keyboard];
            else
                [App::I->ios_view hide_keyboard];
        });
#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 __OSX__
        [App::I->osx_view async_lock];
#elif __IOS__
        [App::I->ios_view async_lock];
#elif __ANDROID__
        android_async_lock();
#elif __LINUX__ || __WEB__
        glfwMakeContextCurrent(App::I->glfw_window);
#endif
    }

    void release_render_context() override
    {
#if __OSX__
        [App::I->osx_view async_unlock];
#elif __IOS__
        [App::I->ios_view async_unlock];
#elif __ANDROID__
        android_async_unlock();
#endif
    }

    void present_render_context() override
    {
#if __OSX__
        [App::I->osx_view async_swap];
#elif __IOS__
        [App::I->ios_view async_swap];
#elif __ANDROID__
        android_async_swap();
#elif __LINUX__ || __WEB__
        glfwSwapBuffers(App::I->glfw_window);
#endif
    }

    void bind_default_render_target() override
    {
        glBindFramebuffer(
            static_cast<GLenum>(pp::renderer::gl::framebuffer_target()),
            pp::renderer::gl::default_framebuffer_id());
    }

    void bind_main_render_target() override
    {
#if __IOS__
        [App::I->ios_view->glview bindDrawable];
#else
        bind_default_render_target();
#endif
    }

    void apply_render_platform_hints() override
    {
#if defined(__OSX__)
        glEnable(static_cast<GLenum>(pp::renderer::gl::program_point_size_state()));
        glEnable(static_cast<GLenum>(pp::renderer::gl::line_smooth_state()));
#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
    {
#if defined(__IOS__) || defined(__OSX__)
        return true;
#else
        return false;
#endif
    }

    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
    {
#ifdef __IOS__
        save_image_library(std::string(path));
#else
        (void)path;
#endif
    }

    void flush_persistent_storage() override
    {
#ifdef __WEB__
        webgl_sync();
#endif
    }

    [[nodiscard]] std::vector<std::string> document_browse_roots(
        std::string_view work_path,
        std::string_view data_path) override
    {
#ifdef __IOS__
        return {
            std::string(work_path),
            std::string(data_path) + "/Inbox",
        };
#else
        (void)data_path;
        return { std::string(work_path) };
#endif
    }

    void save_ui_state() override
    {
#ifdef __OSX__
        [App::I->osx_app save_ui_state];
#endif
    }

    [[nodiscard]] bool enables_live_asset_reloading() override
    {
#if defined(__OSX__)
        return true;
#else
        return false;
#endif
    }

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

    void report_rendered_frames(int frames) override
    {
#ifdef __LINUX__
        linux_update_fps(frames);
#else
        (void)frames;
#endif
    }

    void pick_image(pp::platform::PickedPathCallback callback) override
    {
#ifdef __IOS__
        dispatch_async(dispatch_get_main_queue(), ^{
            [App::I->ios_view pick_photo:callback];
        });
#elif __OSX__
        dispatch_async(dispatch_get_main_queue(), ^{
            NSArray* fileTypes = [NSArray arrayWithObjects:@"png", @"PNG", @"jpg", @"JPG", @"jpeg", nil];
            std::string path = [App::I->osx_view pick_file:fileTypes];
            invoke_picked_path_if_selected(path, 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__
        dispatch_async(dispatch_get_main_queue(), ^{
            NSMutableArray<NSString*>* fileTypes = [NSMutableArray arrayWithCapacity:file_types.size()];
            for (const auto& t : file_types)
                [fileTypes addObject:[NSString stringWithCString:t.c_str() encoding:NSUTF8StringEncoding]];
            [App::I->ios_view pick_file:fileTypes then:callback];
        });
#elif __OSX__
        dispatch_async(dispatch_get_main_queue(), ^{
            NSMutableArray<NSString*>* fileTypes = [NSMutableArray arrayWithCapacity:file_types.size()];
            for (const auto& t : file_types)
                [fileTypes addObject:[NSString stringWithCString:t.c_str() encoding:NSUTF8StringEncoding]];
            std::string path = [App::I->osx_view pick_file:fileTypes];
            invoke_picked_path_if_selected(path, 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__
        dispatch_async(dispatch_get_main_queue(), ^{
            NSMutableArray<NSString*>* fileTypes = [NSMutableArray arrayWithCapacity:file_types.size()];
            for (const auto& t : file_types)
                [fileTypes addObject:[NSString stringWithCString:t.c_str() encoding:NSUTF8StringEncoding]];
            std::string path = [App::I->osx_view pick_file_save:fileTypes];
            invoke_picked_path_if_selected(path, 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__
        dispatch_async(dispatch_get_main_queue(), ^{
            std::string path = [App::I->osx_view pick_dir];
            invoke_picked_path_if_selected(path, callback);
        });
#elif __ANDROID__
        (void)callback;
#else
        (void)callback;
#endif
    }

    [[nodiscard]] bool supports_working_directory_picker() override
    {
#if defined(__OSX__)
        return true;
#else
        return false;
#endif
    }

    [[nodiscard]] std::string format_working_directory_path(std::string_view path) override
    {
#if defined(__OSX__)
        char path_buffer[4096] = {};
        if (realpath(std::string(path).c_str(), path_buffer))
            return path_buffer;
#endif
        return std::string(path);
    }

    [[nodiscard]] bool uses_prepared_file_writes() override
    {
#if __IOS__ || __WEB__
        return true;
#else
        return false;
#endif
    }

    [[nodiscard]] bool uses_work_directory_document_export_collections() override
    {
#if __IOS__
        return true;
#else
        return false;
#endif
    }

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

    [[nodiscard]] bool uses_ppbr_export_data_directory_override() override
    {
#if defined(__OSX__)
        return true;
#else
        return false;
#endif
    }

    [[nodiscard]] bool supports_sonarpen() override
    {
#if __IOS__
        return true;
#else
        return false;
#endif
    }

    void start_sonarpen() override
    {
#if __IOS__
        [App::I->ios_app sonarpen_start];
#endif
    }

    [[nodiscard]] bool draws_canvas_tip_for_pointer(
        bool is_mouse,
        bool is_stylus,
        bool is_left_button_release) override
    {
#if defined(__IOS__)
        (void)is_stylus;
        return is_mouse && !is_left_button_release;
#else
        (void)is_left_button_release;
        return is_mouse || is_stylus;
#endif
    }

    [[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
    {
        const std::string name = std::string(default_name) + "." + std::string(type);
#ifdef __IOS__
        (void)data_path;
        return {
            std::string(temporary_path) + "/" + name,
            name,
            true,
        };
#elif __WEB__
        (void)temporary_path;
        return {
            std::string(data_path) + "/" + name,
            name,
            false,
        };
#else
        (void)data_path;
        (void)temporary_path;
        return {};
#endif
    }

    void display_file(std::string_view path) override
    {
        const std::string value(path);
#ifdef __IOS__
        dispatch_async(dispatch_get_main_queue(), ^{
            [App::I->ios_view display_file:value];
        });
#elif __OSX__
        [[NSWorkspace sharedWorkspace] openFile:[NSString stringWithUTF8String:value.c_str()]];
#else
        (void)value;
#endif
    }

    void share_file(std::string_view path) override
    {
        const std::string value(path);
#ifdef __IOS__
        dispatch_async(dispatch_get_main_queue(), ^{
            [App::I->ios_view share_file:[NSString stringWithUTF8String:value.c_str()]];
        });
#elif __OSX__
        dispatch_async(dispatch_get_main_queue(), ^{
            [App::I->osx_view share_file:[NSString stringWithUTF8String:value.c_str()]];
        });
#else
        (void)value;
#endif
    }

    void request_app_close() override
    {
#ifdef __OSX__
        dispatch_async(dispatch_get_main_queue(), ^{
            [App::I->osx_view close];
        });
#elif __LINUX__
        glfwSetWindowShouldClose(App::I->glfw_window, GLFW_TRUE);
#endif
    }

    void save_prepared_file(
        std::string_view path,
        std::string_view suggested_name,
        pp::platform::PreparedFileCallback callback) override
    {
        const std::string value(path);
        const std::string name(suggested_name);
#ifdef __IOS__
        (void)name;
        dispatch_async(dispatch_get_main_queue(), ^{
            [App::I->ios_view pick_file_save:value];
        });
        callback(value, true);
#elif __WEB__
        webgl_pick_file_save(value, name, [callback = std::move(callback), value](bool success) {
            callback(value, success);
        });
#else
        (void)name;
        callback(value, false);
#endif
    }
};

}

namespace pp::platform::legacy {

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

}