/* ui/settings.c — 设置页（ACT_SETTINGS）。
 *
 * 行项：音质（Hi-res/较高/标准，默认 Hi-res）+ 缓存上限（1~100GB，默认 10GB）+ 退出登录。
 * 设置持久化到 MeowData/os.meow.ncm/data（meow_config_*；缓存上限键 ncm.cache_limit_gb 与核心库
 * ncm_cache_load_setting 对齐）。音质/上限经 BottomSheet 选择；退出登录经 confirm 弹窗。
 * 空态/绘制用 custom 绘制物 + 手动行命中（仅 3 行，无需列表滚动）。
 */
#include "../ncm_app_internal.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>

typedef struct { meow_view *view; int active; } settings_ctrl;
static settings_ctrl g_sc;

static meow_widget *g_tb;
static ncm_rect_t   r_cont;
static int          g_custom_id;
static int          g_row_h;           /* 行高 */

static const char *level_name(int lv)
{
    switch (lv) {
        case NCM_LEVEL_HIRES:   return "Hi-Res";
        case NCM_LEVEL_LOSSLESS:return "Lossless";
        case NCM_LEVEL_EXHIGH:  return "Exhigh";
        case NCM_LEVEL_HIGHER:  return "Higher";
        default:                return "Standard";
    }
}

static void settings_draw(void *ctx)
{
    (void)ctx;
    if (meow_ui_activity_active() != ACT_SETTINGS) return;
    const meow_theme *th = meow_theme_get();
    const ncm_pal_t *pa  = ncm_palette(g_dark);
    g_row_h = 60;
    int y = r_cont.y + 16;
    int w = r_cont.w - 2 * APP_PAD;
    int x = APP_PAD;

    /* 行：音质 / 缓存上限 / 退出登录 / 关于（色 = 语义色；退出 = error）。 */
    struct { const char *title; char sub[160]; int red; } rows[4];
    rows[0].title = "音质"; rows[0].red = 0;
    rows[1].title = "缓存上限"; rows[1].red = 0;
    rows[2].title = "退出登录"; rows[2].red = 1;
    rows[3].title = "关于网易云"; rows[3].red = 0;
    snprintf(rows[0].sub, sizeof rows[0].sub, "当前: %s", level_name(g_st.level));
    snprintf(rows[1].sub, sizeof rows[1].sub, "当前: %d GB", g_st.cache_limit_gb);
    snprintf(rows[2].sub, sizeof rows[2].sub, "%s", g_st.nickname[0] ? g_st.nickname : "退出");
    snprintf(rows[3].sub, sizeof rows[3].sub, "%s", "v0.1 · MeowOS");

    for (int i = 0; i < 4; i++) {
        int yy = y + i * (g_row_h + 8);
        ncm_fill_round(x, yy, w, g_row_h, 12, th->surfaceContainer);
        uint32_t tcol = rows[i].red ? th->error : th->onSurface;
        uint32_t scol = rows[i].red ? th->error : th->onSurfaceVariant;
        meow_ui_text(x + APP_PAD, yy + 12, rows[i].title, 20, tcol);
        meow_ui_text(x + APP_PAD, yy + 34, rows[i].sub, 20, scol);
        meow_ui_text_right(x + w - APP_PAD, yy + 18, ">", 28, rows[i].red ? th->error : th->onSurfaceVariant);
    }

    /* 分组说明（占位）+ 品牌红小字。 */
    int ny = y + 4 * (g_row_h + 8) + 4;
    meow_ui_text(x, ny, "以下为占位，v1 不启用", 20, th->onSurfaceVariant);
    meow_ui_text(x, ny + 24, "品牌红 © MeowOS · NCM", 20, pa->red);
}

static int row_at(int x, int y)
{
    (void)x;
    int r = r_cont.y + 16;
    for (int i = 0; i < 4; i++) {
        int yy = r + i * (g_row_h + 8);
        if (y >= yy && y <= yy + g_row_h) return i;
    }
    return -1;
}

int settings_is_active(void) { return g_sc.active; }

int settings_on_tap(int x, int y)
{
    if (g_tb) {
        int ah = meow_topappbar_hit(g_tb, x, y);
        if (ah == MEOW_TOPBAR_BACK) { meow_view_page_pop(); return 1; }
        if (ah >= 0) { return 1; }
    }
    if (x < APP_PAD || x > r_cont.w - APP_PAD) return 0;
    int row = row_at(x, y);
    if (row < 0) return 0;

    if (row == 0) {         /* 音质 */
        meow_sheet *s = meow_sheet_create("Music Quality", 0);
        meow_sheet_add_item(s, "Hi-Res");
        meow_sheet_add_item(s, "Higher");
        meow_sheet_add_item(s, "Standard");
        int op = meow_sheet_open(s);
        meow_sheet_free(s);
        if (op >= 0) {
            g_st.level = (op == 0) ? NCM_LEVEL_HIRES : (op == 1) ? NCM_LEVEL_HIGHER : NCM_LEVEL_STANDARD;
            player_manager_set_quality(g_st.level, g_st.cache_limit_gb);
            appstate_save_settings();
            meow_ui_invalidate(r_cont.x, r_cont.y, r_cont.w, r_cont.h);
        }
        return 1;
    }
    if (row == 1) {         /* 缓存上限 */
        static const int gbs[] = { 1, 2, 5, 10, 20, 30, 50, 100 };
        static const char *labels[] = { "1 GB", "2 GB", "5 GB", "10 GB",
                                        "20 GB", "30 GB", "50 GB", "100 GB" };
        meow_sheet *s = meow_sheet_create("Cache Limit", 0);
        for (int i = 0; i < 8; i++) meow_sheet_add_item(s, labels[i]);
        int op = meow_sheet_open(s);
        meow_sheet_free(s);
        if (op >= 0 && op < 8) {
            g_st.cache_limit_gb = gbs[op];
            player_manager_set_quality(g_st.level, g_st.cache_limit_gb);
            appstate_save_settings();
            meow_ui_invalidate(r_cont.x, r_cont.y, r_cont.w, r_cont.h);
        }
        return 1;
    }
    if (row == 2) {         /* 退出登录 */
        meow_dialog *d = meow_dialog_create(MEOW_DLG_CONFIRM, "Sign out?");
        const char *msgs[1];
        msgs[0] = "Playback will stop.\nYou'll need to scan a QR code again.";
        meow_dialog_set_items(d, msgs, 1, -1);
        int yes = meow_dialog_confirm(d);
        meow_dialog_free(d);
        if (yes) {
            appstate_logout();
            meow_view_page_replace(ACT_LOGIN);
        }
        return 1;
    }
    if (row == 3) {         /* 关于（v1 占位） */
        ncm_snack("关于页开发中");
        return 1;
    }
    return 0;
}

void settings_swipe(int dir, int dist) { (void)dir; (void)dist; }
void settings_touch_down(int x, int y) { (void)x; (void)y; }
void settings_touch_move(int x, int y) { (void)x; (void)y; }

void settings_open(void)
{
    g_st.playing_song = -1;
    meow_view_page_push(ACT_SETTINGS);
}

void settings_reload(void)
{
    const meow_theme *th = meow_theme_get();
    meow_ui_set_page_bg(th->bg);
    meow_ui_paint_full();
}

static void st_page_create(meow_view *v, void *ctx)
{
    (void)v;
    ((settings_ctrl *)ctx)->view = v;
    r_cont = ncm_content_rect();
    meow_ui_activity_push(ACT_SETTINGS);   /* owner=ACT_SETTINGS */
    g_tb = ncm_topbar_create("Settings", 1, NULL);
    meow_ui_activity_pop();
    g_row_h = 60;
    g_custom_id = meow_draw_custom_register(1, r_cont.x, r_cont.y, r_cont.w, r_cont.h,
                                            settings_draw, NULL);
}

static void st_page_enter(meow_view *v, void *ctx)
{
    (void)v;
    ((settings_ctrl *)ctx)->active = 1;
    settings_reload();
}

static void st_page_leave(meow_view *v, void *ctx)
{
    (void)v;
    ((settings_ctrl *)ctx)->active = 0;
}

static void st_page_destroy(meow_view *v, void *ctx)
{
    (void)v; (void)ctx;
    if (g_custom_id) { meow_draw_unregister(g_custom_id); g_custom_id = 0; }
    if (g_tb) { meow_widget_free(g_tb); g_tb = NULL; }
}

meow_view *settings_view_create(void)
{
    static const meow_view_hooks h = {
        .on_create  = st_page_create,
        .on_enter   = st_page_enter,
        .on_leave   = st_page_leave,
        .on_destroy = st_page_destroy,
    };
    return meow_view_create(ACT_SETTINGS, MEOW_VIEW_ACTIVITY, &h, &g_sc);
}