/* app.c — os.meow.ncm 应用装配层：main + 组装 + 事件分发。
 *
 * 职责（对齐 hello_app/app.c）：main 只做初始化/建页/跑事件循环/清理；把 meow_ui_run 的平铺输入
 * 回调（key/tap/swipe/tick/touch）路由到当前活动页。页面切换统一走 meow_view_page_push/pop/replace。
 * 播放线程（player_manager）+ 媒体会话 IPC 线程（ipc_media）在 main 起动、退出时停。
 *
 * 铁律（APPS.md §3.4.1）：物理键禁映射——on_key 不处理任何键语义；返回=左缘左滑/返回钮/request_exit。
 * 左缘返回：播放页→歌单→主页→退出（登录页→退出）。
 */
#include "ncm_app_internal.h"
#include <signal.h>

ncm_app_state_t g_st;
ncm_play_run_t  g_play = { .mu = PTHREAD_MUTEX_INITIALIZER,
                           .state = NCM_PC_STOPPED, .cur_song = -1 };
volatile int g_app_quit = 0;
volatile int g_net_ready = 0;
int          g_host_mock = 0;

static meow_view *g_login_view, *g_home_view, *g_pl_view, *g_plr_view, *g_set_view;

static void on_sigterm(int s) { (void)s; meow_ui_request_exit(); }

/* ============================================================ */
/* 事件分发：meow_ui_run 平铺回调 → 当前页                        */
/* ============================================================ */

static void app_on_key(int keycode, int is_down)
{
    (void)keycode; (void)is_down;   /* 物理键系统语义；App 不映射（§3.4.1） */
}

static void app_on_tap(int x, int y)
{
    if (login_is_active())     { login_on_tap(x, y); return; }
    if (player_is_active())    { player_on_tap(x, y); return; }
    if (settings_is_active())  { settings_on_tap(x, y); return; }
    if (playlist_is_active())  { playlist_on_tap(x, y); return; }
    home_on_tap(x, y);
}

static void app_on_swipe(int dir, int dx, int dy)
{
    (void)dx;
    if (dir == MEOW_SWIPE_LEFT) {
        if (player_is_active())   { meow_view_page_pop(); return; }
        if (settings_is_active()) { meow_view_page_pop(); return; }
        if (playlist_is_active()) { meow_view_page_pop(); return; }
        /* home / login = 根 → 退出 */
        meow_log(MEOW_LOG_INFO, "exit:swipe");
        meow_ui_request_exit();
        return;
    }
    if (home_is_active())     { home_swipe(dir, dy); return; }
    if (playlist_is_active()) { playlist_swipe(dir, dy); return; }
    if (player_is_active())   { player_on_swipe(dir, dy); return; }
}

static void app_on_touch_down(int x, int y)
{
    if (home_is_active())     home_touch_down(x, y);
    else if (playlist_is_active()) playlist_touch_down(x, y);
    else if (settings_is_active()) settings_touch_down(x, y);
}

static void app_on_touch_move(int x, int y)
{
    if (home_is_active())     home_touch_move(x, y);
    else if (playlist_is_active()) playlist_touch_move(x, y);
    else if (settings_is_active()) settings_touch_move(x, y);
}

static void app_on_swipe_progress(int x_start, int dx)
{
    meow_ui_swipe_hint(x_start + dx);
}

static void app_on_tick(void)
{
    uint64_t now = meow_ui_time_ms();
    if (login_is_active())    { login_tick(now); return; }
    if (player_is_active())   { player_tick(now); return; }
    chrome_tick();
}

/* ============================================================ */
/* main                                                          */
/* ============================================================ */
int main(void)
{
    meow_log(MEOW_LOG_INFO, "start");
    meow_ui_opts o = { APP_W, APP_H };
    if (meow_ui_init(&o) != 0) { meow_log(MEOW_LOG_ERROR, "init failed"); return 1; }
    meow_theme_add_listener(NULL);
    signal(SIGTERM, on_sigterm);

    /* 应用数据/核心库上下文（cookie/deviceId/cache/设置） */
    appstate_init();

    /* 播放 + 媒体会话线程（UI 不卡；无 launcher socket 时 ipc 优雅跳过） */
    player_manager_start();
    ipc_media_start();
    g_net_ready = 1;

    /* 建五页 view */
    g_login_view  = login_view_create();
    g_home_view   = home_view_create();
    g_pl_view     = playlist_view_create();
    g_plr_view    = player_view_create();
    g_set_view    = settings_view_create();

    /* 进入根页：已登录→home，否则→login */
    meow_view_page_push(g_st.logged_in ? ACT_HOME : ACT_LOGIN);

    meow_ui_events ev = {
        app_on_key, app_on_tap, app_on_swipe, app_on_tick, app_on_swipe_progress,
        app_on_touch_down, app_on_touch_move,
    };
    meow_ui_run(&ev);

    /* 清理：停线程 → 释放页 */
    g_app_quit = 1;
    player_manager_stop_thread();
    ipc_media_stop();
    meow_view_free(g_set_view);
    meow_view_free(g_plr_view);
    meow_view_free(g_pl_view);
    meow_view_free(g_home_view);
    meow_view_free(g_login_view);
    meow_ui_shutdown();
    meow_log(MEOW_LOG_INFO, "exit");
    return 0;
}