/* test_np_cover.c — M6.33 播放页/歌词页封面 lifecycle 宿主验证。
 *
 * 背景：ncm 状态切换可能先上报空 artwork（媒体会话 artwork 短暂为空/换源），随后复原；
 * launcher 侧封面渲染在 now_playing.c（静态 np_cover_load / run_now_playing 的 meta_changed）。
 * 本测试验证两处 M6.33 修复的语义：
 *   np_cover_load 缓存决策：artwork 变化重载；artwork 为空→清封面（回退主题占位）；
 *     同路径但封面为空（此前加载失败/空清空后）→ 允许重试重载（旧逻辑「路径未变即跳过」会卡死）。
 *   run_now_playing meta_changed：补 artwork 追踪，artwork-only 变化也触发整页重绘。
 *
 * 说明：np_cover_load 为 now_playing.c 内 static（launcher TU，宿主不可链），故本测试按项目
 * mirror 惯例（同 test_now_playing_widgets 镜像几何）逐字镜像其决策，用**真实 SDK 图片加载**（
 * meow_img_load_file/meow_img_free + stb_image）驱动真实 BMP，验证 artwork 生命周期。
 *
 * 编译（在 patch_v2/meow_launcherd 下；链法同 test_now_playing_widgets + meow_img_color）：
 *   gcc -Wall -Wextra -o test_np_cover test_np_cover.c \
 *       ../sdk/test_host_stub.c ../sdk/meow_ui_gfx.c ../sdk/meow_ui_sys.c \
 *       ../sdk/meow_ui_theme.c ../sdk/meow_ui_vol.c ../sdk/meow_ui_log.c \
 *       ../sdk/meow_ui_widget.c ../sdk/meow_ui_input.c ../sdk/meow_ui_activity.c \
 *       ../sdk/meow_ui_dialog.c ../sdk/meow_ui_ime.c ../sdk/meow_ui_str.c ../sdk/meow_pinyin.c \
 *       ../sdk/meow_ui_draw.c ../sdk/meow_ui_view.c ../sdk/meow_ui_box.c ../sdk/meow_ui_anim.c \
 *       ../sdk/meow_ui_scroll.c ../sdk/meow_ui_img.c ../sdk/meow_ui_media.c \
 *       ../sdk/meow_notify_ipc.c ../sdk/stb_image.c ../sdk/meow_lyric.c ../sdk/meow_lyric_view.c \
 *       ../sdk/meow_img_color.c \
 *       -I../sdk -I. -DMEOW_UI_HOST_TEST -pthread -lm
 * 运行：./test_np_cover
 */
#include "meow_ui.h"
#include "meow_media.h"        /* meow_media_session_t（取 artwork 字段） */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

/* 局部补全 meow_img（与 meow_ui_img.c / meow_img_color.c 布局一致）：读取已加载封面尺寸。 */
struct meow_img { int w, h; unsigned char *rgba; };
static int img_w(meow_img *im) { return im ? ((struct meow_img *)im)->w : 0; }
static int img_h(meow_img *im) { return im ? ((struct meow_img *)im)->h : 0; }

static int g_fail = 0;
#define CHECK(cond, name) do { \
    if (cond) printf("  PASS %s\n", name); \
    else { printf("  FAIL %s (%s:%d)\n", name, __FILE__, __LINE__); g_fail++; } } while (0)

/* ================= M6.33 镜像 np_cover_load（now_playing.c 逐字语义） ================= */
static meow_img *g_np_cover = NULL;
static char      g_np_cover_path[200] = "";

static void np_cover_load(const meow_media_session_t *s)
{
    if (!s) return;
    if (g_np_cover && strcmp(g_np_cover_path, s->artwork) == 0) return;  /* 已载且未变 → 跳过 */
    if (g_np_cover) { meow_img_free(g_np_cover); g_np_cover = NULL; }
    snprintf(g_np_cover_path, sizeof g_np_cover_path, "%s", s->artwork);
    if (!s->artwork[0]) return;
    char path[240];
    if (s->artwork[0] == '/') snprintf(path, sizeof path, "%s", s->artwork);
    else snprintf(path, sizeof path, "/usr/data/mnt/sd_0/%s", s->artwork);
    g_np_cover = meow_img_load_file(path);
}

/* ================= M6.33 镜像 run_now_playing meta_changed（补 artwork 追踪） ========= */
static int meta_changed_needs_redraw(const char *last_app, const char *last_title,
                                     uint32_t last_state, const char *last_art,
                                     const meow_media_session_t *s)
{
    if (!s) return 1;   /* 源消失 → 空态重画 */
    return strcmp(last_app, s->app_id) || strcmp(last_title, s->title) ||
           strcmp(last_art, s->artwork) || last_state != s->state;
}

/* ============ 小工具：写 24-bit 无压缩 BMP 到 path（stb_image 可读），纯色填充 ============
 * 结构：BITMAPFILEHEADER(14) + BITMAPINFOHEADER(40) + 像素（bottom-up，BGR，行对齐 4B）。 */
static void write_bmp(const char *path, int w, int h, int r, int g, int b)
{
    int rowPitch = (w * 3 + 3) & ~3;
    int imgSize  = rowPitch * h;
    int fileSize = 54 + imgSize;
    unsigned char hdr[54];
    memset(hdr, 0, sizeof hdr);
    hdr[0] = 'B'; hdr[1] = 'M';
    hdr[2] = (unsigned char)(fileSize & 0xFF);
    hdr[3] = (unsigned char)((fileSize >> 8) & 0xFF);
    hdr[4] = (unsigned char)((fileSize >> 16) & 0xFF);
    hdr[5] = (unsigned char)((fileSize >> 24) & 0xFF);
    hdr[10] = 54;
    hdr[14] = 40;
    hdr[18] = (unsigned char)(w & 0xFF);
    hdr[19] = (unsigned char)((w >> 8) & 0xFF);
    hdr[22] = (unsigned char)(h & 0xFF);
    hdr[23] = (unsigned char)((h >> 8) & 0xFF);
    hdr[24] = (unsigned char)((h >> 16) & 0xFF);
    hdr[25] = (unsigned char)((h >> 24) & 0xFF);
    hdr[26] = 1; hdr[28] = 24;             /* planes=1, bpp=24 */
    hdr[34] = (unsigned char)(imgSize & 0xFF);
    hdr[35] = (unsigned char)((imgSize >> 8) & 0xFF);
    hdr[36] = (unsigned char)((imgSize >> 16) & 0xFF);
    hdr[37] = (unsigned char)((imgSize >> 24) & 0xFF);
    FILE *f = fopen(path, "wb");
    if (!f) { printf("  !! cannot write %s\n", path); exit(1); }
    fwrite(hdr, 1, sizeof hdr, f);
    unsigned char *row = (unsigned char *)malloc((size_t)rowPitch);
    memset(row, 0, (size_t)rowPitch);
    for (int x = 0; x < w; x++) { row[x * 3 + 0] = (unsigned char)b; row[x * 3 + 1] = (unsigned char)g; row[x * 3 + 2] = (unsigned char)r; }
    for (int y = 0; y < h; y++) fwrite(row, 1, (size_t)rowPitch, f);
    free(row);
    fclose(f);
}

int main(void)
{
    setbuf(stdout, NULL);
    setenv("MEOW_UI_DUMP", "/tmp/npcover.ppm", 1);
    meow_ui_opts o = { 480, 720 };
    if (meow_ui_init(&o) != 0) { printf("  FAIL meow_ui_init\n"); return 1; }
    meow_ui_activity_push(0x57);

    /* 两张真实封面文件：A=蓝，B=红 */
    const char *pa = "/tmp/np_cover_a.bmp", *pb = "/tmp/np_cover_b.bmp";
    const char *pgone = "/tmp/np_cover_missing.bmp";   /* 先不存在 → 加载失败 */
    write_bmp(pa, 16, 16, 0x40, 0x80, 0xC0);           /* 蓝 16x16 */
    write_bmp(pb, 12, 12, 0xC0, 0x40, 0x40);           /* 红 12x12（尺寸不同，便于断言「已替换」） */

    meow_media_session_t s; memset(&s, 0, sizeof s);
    s.used = 1; s.state = MEOW_MEDIA_PLAYING;
    strcpy(s.app_id, "ncm"); strcpy(s.title, "song"); strcpy(s.artist, "artist");

    /* ============ C1 artwork 有 → 封面载入（播放页/歌词页共用 g_np_cover） ============ */
    printf("C1 artwork present -> cover loads\n");
    memset(g_np_cover_path, 0, sizeof g_np_cover_path);
    strcpy(s.artwork, pa);
    np_cover_load(&s);
    CHECK(g_np_cover != NULL, "artwork present -> cover loaded (non-NULL)");
    CHECK(img_w(g_np_cover) == 16 && img_h(g_np_cover) == 16, "cover is 16x16");
    /* 同路径未变 → 缓存命中，不重载（指针不变） */
    meow_img *keep = g_np_cover;
    np_cover_load(&s);
    CHECK(g_np_cover == keep, "same path unchanged -> cache hit (no reload)");

    /* ============ C2 artwork 空 → 封面清空（回退主题占位） ============ */
    printf("C2 artwork empty -> cover cleared (theme placeholder)\n");
    memset(s.artwork, 0, sizeof s.artwork);
    np_cover_load(&s);
    CHECK(g_np_cover == NULL, "artwork empty -> cover NULL (theme placeholder)");
    CHECK(g_np_cover_path[0] == 0, "empty -> cached path reset to \"\"");

    /* ============ C3 artwork 从空复原（同路径）→ 封面重载（M6.33 修复） ============ */
    printf("C3 artwork restored (same path) -> cover reloads (M6.33)\n");
    strcpy(s.artwork, pa);
    np_cover_load(&s);
    CHECK(g_np_cover != NULL, "restore from empty -> cover reloaded");
    CHECK(img_w(g_np_cover) == 16, "reloaded cover intact");

    /* ============ C4 换源（A→B 另一路径）→ 封面替换 ============ */
    printf("C4 artwork switch (A->B) -> cover replaced\n");
    strcpy(s.artwork, pb);
    np_cover_load(&s);
    CHECK(g_np_cover != NULL, "switch to B -> cover loaded");
    /* 用尺寸（而非指针身份，malloc 会复用地址）证明确实换成 B */
    CHECK(img_w(g_np_cover) == 12 && img_h(g_np_cover) == 12, "cover replaced by B (12x12)");
    CHECK(strcmp(g_np_cover_path, pb) == 0, "cache path updated to B");

    /* ============ C5 首载失败同路径重报 → 重试成功（M6.33 修复） ============ */
    printf("C5 first load fails then same-path re-report -> retry succeeds (M6.33)\n");
    memset(g_np_cover_path, 0, sizeof g_np_cover_path);
    if (g_np_cover) { meow_img_free(g_np_cover); g_np_cover = NULL; }
    /* 缺失文件首载失败：cover NULL, cache path=missing */
    strcpy(s.artwork, pgone);
    np_cover_load(&s);
    CHECK(g_np_cover == NULL, "nonexistent path -> cover NULL");
    CHECK(strcmp(g_np_cover_path, pgone) == 0, "cache path = missing (recorded)");
    /* 文件此刻出现，仍同路径重报 → 旧逻辑「路径未变即跳过」卡死；新逻辑 g_np_cover==NULL 重试 */
    write_bmp(pgone, 8, 8, 0x20, 0xE0, 0x20);           /* 绿 */
    np_cover_load(&s);
    CHECK(g_np_cover != NULL, "same path + cover NULL -> reload succeeds");
    CHECK(img_w(g_np_cover) == 8, "retried cover is 8x8");
    remove(pgone);

    /* ============ C6 meta_changed 补 artwork：artwork-only 变化也触发整页重绘 ============ */
    printf("C6 meta_changed tracks artwork (M6.33)\n");
    memset(&s, 0, sizeof s); s.used = 1; s.state = MEOW_MEDIA_PLAYING;
    strcpy(s.app_id, "ncm"); strcpy(s.title, "song"); strcpy(s.artwork, pa);
    CHECK(meta_changed_needs_redraw("ncm", "song", MEOW_MEDIA_PLAYING, pa, &s) == 0,
          "no change -> no redraw");
    /* 仅 artwork 变化（app/title/state 全同）→ 旧逻辑=0（不重绘→封面卡空）；新逻辑=1 */
    CHECK(meta_changed_needs_redraw("ncm", "song", MEOW_MEDIA_PLAYING, "", &s) == 1,
          "artwork-only change -> redraw (was missed before M6.33)");
    CHECK(meta_changed_needs_redraw("ncm", "song", MEOW_MEDIA_PLAYING, pb, &s) == 1,
          "artwork path switch -> redraw");
    CHECK(meta_changed_needs_redraw("ncm", "song", MEOW_MEDIA_PLAYING, pa, &s) == 0,
          "same art same title -> no redraw");

    /* 清理 */
    if (g_np_cover) { meow_img_free(g_np_cover); g_np_cover = NULL; }
    remove(pa); remove(pb);

    meow_ui_activity_pop();
    meow_ui_shutdown();
    printf(g_fail ? "\nRESULT: %d FAIL(S)\n" : "\nRESULT: ALL PASS\n", g_fail);
    return g_fail;
}