#include <furi.h>
#include <furi_hal.h>
#include <applications.h>
#include <assets_icons.h>
#include <loader/loader.h>

#include "../desktop_i.h"
#include "../views/desktop_events.h"
#include "../views/desktop_view_main.h"
#include "desktop_scene.h"
#include "desktop_scene_i.h"

#define TAG "DesktopSrv"

static void desktop_scene_main_app_started_callback(const void* message, void* context) {
    furi_assert(context);
    Desktop* desktop = context;
    const LoaderEvent* event = message;

    if(event->type == LoaderEventTypeApplicationStarted) {
        view_dispatcher_send_custom_event(
            desktop->view_dispatcher, DesktopMainEventBeforeAppStarted);
        osSemaphoreAcquire(desktop->unload_animation_semaphore, osWaitForever);
    } else if(event->type == LoaderEventTypeApplicationStopped) {
        view_dispatcher_send_custom_event(
            desktop->view_dispatcher, DesktopMainEventAfterAppFinished);
    }
}

static void desktop_scene_main_new_idle_animation_callback(void* context) {
    furi_assert(context);
    Desktop* desktop = context;
    view_dispatcher_send_custom_event(
        desktop->view_dispatcher, DesktopAnimationEventNewIdleAnimation);
}

static void desktop_scene_main_check_animation_callback(void* context) {
    furi_assert(context);
    Desktop* desktop = context;
    view_dispatcher_send_custom_event(
        desktop->view_dispatcher, DesktopAnimationEventCheckAnimation);
}

static void desktop_scene_main_interact_animation_callback(void* context) {
    furi_assert(context);
    Desktop* desktop = context;
    view_dispatcher_send_custom_event(
        desktop->view_dispatcher, DesktopAnimationEventInteractAnimation);
}

static void desktop_switch_to_app(Desktop* desktop, const FlipperApplication* flipper_app) {
    furi_assert(desktop);
    furi_assert(flipper_app);
    furi_assert(flipper_app->app);
    furi_assert(flipper_app->name);

    if(furi_thread_get_state(desktop->scene_thread) != FuriThreadStateStopped) {
        FURI_LOG_E("Desktop", "Thread is already running");
        return;
    }

    furi_thread_set_name(desktop->scene_thread, flipper_app->name);
    furi_thread_set_stack_size(desktop->scene_thread, flipper_app->stack_size);
    furi_thread_set_callback(desktop->scene_thread, flipper_app->app);

    furi_thread_start(desktop->scene_thread);
}

void desktop_scene_main_callback(DesktopEvent event, void* context) {
    Desktop* desktop = (Desktop*)context;
    view_dispatcher_send_custom_event(desktop->view_dispatcher, event);
}

void desktop_scene_main_on_enter(void* context) {
    Desktop* desktop = (Desktop*)context;
    DesktopMainView* main_view = desktop->main_view;

    animation_manager_set_context(desktop->animation_manager, desktop);
    animation_manager_set_new_idle_callback(
        desktop->animation_manager, desktop_scene_main_new_idle_animation_callback);
    animation_manager_set_check_callback(
        desktop->animation_manager, desktop_scene_main_check_animation_callback);
    animation_manager_set_interact_callback(
        desktop->animation_manager, desktop_scene_main_interact_animation_callback);

    furi_assert(osSemaphoreGetCount(desktop->unload_animation_semaphore) == 0);
    Loader* loader = furi_record_open("loader");
    desktop->app_start_stop_subscription = furi_pubsub_subscribe(
        loader_get_pubsub(loader), desktop_scene_main_app_started_callback, desktop);

    // Special case: application is already running (autostart application)
    if(loader_is_locked(loader)) {
        animation_manager_unload_and_stall_animation(desktop->animation_manager);
    }

    furi_record_close("loader");

    desktop_main_set_callback(main_view, desktop_scene_main_callback, desktop);

    view_dispatcher_switch_to_view(desktop->view_dispatcher, DesktopViewIdMain);
}

bool desktop_scene_main_on_event(void* context, SceneManagerEvent event) {
    Desktop* desktop = (Desktop*)context;
    bool consumed = false;

    if(event.type == SceneManagerEventTypeCustom) {
        switch(event.event) {
        case DesktopMainEventOpenMenu:
            loader_show_menu();
            consumed = true;
            break;

        case DesktopMainEventOpenLockMenu:
            scene_manager_next_scene(desktop->scene_manager, DesktopSceneLockMenu);
            consumed = true;
            break;

        case DesktopMainEventOpenDebug:
            scene_manager_next_scene(desktop->scene_manager, DesktopSceneDebug);
            consumed = true;
            break;

        case DesktopMainEventOpenArchive:
#ifdef APP_ARCHIVE
            desktop_switch_to_app(desktop, &FLIPPER_ARCHIVE);
#endif
            consumed = true;
            break;

        case DesktopMainEventOpenFavorite:
            LOAD_DESKTOP_SETTINGS(&desktop->settings);
            if(desktop->settings.favorite < FLIPPER_APPS_COUNT) {
                Loader* loader = furi_record_open("loader");
                LoaderStatus status =
                    loader_start(loader, FLIPPER_APPS[desktop->settings.favorite].name, NULL);
                if(status != LoaderStatusOk) {
                    FURI_LOG_E(TAG, "loader_start failed: %d", status);
                }
                furi_record_close("loader");
            } else {
                FURI_LOG_E(TAG, "Can't find favorite application");
            }
            consumed = true;
            break;

        case DesktopAnimationEventCheckAnimation:
            animation_manager_check_blocking_process(desktop->animation_manager);
            consumed = true;
            break;
        case DesktopAnimationEventNewIdleAnimation:
            animation_manager_new_idle_process(desktop->animation_manager);
            consumed = true;
            break;
        case DesktopAnimationEventInteractAnimation:
            animation_manager_interact_process(desktop->animation_manager);
            consumed = true;
            break;
        case DesktopMainEventBeforeAppStarted:
            animation_manager_unload_and_stall_animation(desktop->animation_manager);
            osSemaphoreRelease(desktop->unload_animation_semaphore);
            consumed = true;
            break;
        case DesktopMainEventAfterAppFinished:
            animation_manager_load_and_continue_animation(desktop->animation_manager);
            consumed = true;
            break;
        case DesktopLockedEventUpdate:
            desktop_view_locked_update(desktop->locked_view);
            consumed = true;
            break;

        default:
            break;
        }
    }

    return consumed;
}

void desktop_scene_main_on_exit(void* context) {
    Desktop* desktop = (Desktop*)context;

    /**
     * We're allowed to leave this scene only when any other app & loader
     * is finished, that's why we can be sure there is no task waiting
     * for start/stop semaphore
     */
    Loader* loader = furi_record_open("loader");
    furi_pubsub_unsubscribe(loader_get_pubsub(loader), desktop->app_start_stop_subscription);
    furi_record_close("loader");
    furi_assert(osSemaphoreGetCount(desktop->unload_animation_semaphore) == 0);

    animation_manager_set_new_idle_callback(desktop->animation_manager, NULL);
    animation_manager_set_check_callback(desktop->animation_manager, NULL);
    animation_manager_set_interact_callback(desktop->animation_manager, NULL);
    animation_manager_set_context(desktop->animation_manager, desktop);
}