/* test_meow_ui_swipe.c — 宿主验证列表行左滑删除（§5.5,M7.3 缺口 #9）：
 * T1 滑动手势判定与冲突消解：begin 命中可滑行返回 1；横向小位移 = swipe（move 返回 1 消费）；
 *    纵向大位移 = 滚动手势优先（move 返回 0 并取消本行 swipe）；非启用行 begin 返回 0。
 * T2 左滑超阈值 → 删除动画（meow_anim 滑出），结束后 on_delete 回调恰一次 + swipe 状态复位。
 * T3 未超阈值 → 回弹，on_delete 不触发，swipe_dx 回到 0。
 * T4 点按（无位移）：begin 后 end（未 started）返回 0（App 走 tap_at），不触发 on_delete。
 * T5 右露删除区像素：滑动中重绘列表 → 右露区画主题 error 底 + 行内容左移。
 *
 * 编译（宿主 gcc）：
 *   gcc -o test_meow_ui_swipe test_meow_ui_swipe.c test_host_stub.c \
 *       meow_ui_gfx.c meow_ui_sys.c meow_ui_theme.c meow_ui_vol.c meow_ui_log.c \
 *       meow_ui_widget.c meow_ui_input.c meow_ui_activity.c meow_ui_dialog.c meow_ui_ime.c meow_ui_str.c \
 *       meow_pinyin.c meow_ui_draw.c meow_ui_view.c meow_ui_box.c meow_ui_anim.c meow_ui_scroll.c \
 *       meow_ui_img.c meow_ui_media.c meow_notify_ipc.c stb_image.c \
 *       -I. -I../meow_launcherd -DMEOW_UI_HOST_TEST -pthread -lm
 * 运行：./test_meow_ui_swipe
 */
#include "meow_ui.h"
#include "meow_ui_internal.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

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

static void rd_px(int x, int y, int *r, int *g, int *b)
{
    unsigned char *bb = meow_ui_back_buf();
    int line = meow_ui_back_buf_pitch(), bpp = meow_ui_back_buf_bpp();
    if (!bb || x < 0 || y < 0) { *r = *g = *b = 0; return; }
    if (bpp == 16) {
        uint16_t px = *(uint16_t *)(bb + (size_t)y * line + (size_t)x * 2);
        *r = (((px >> 11) & 0x1F) << 3) | ((px >> 11) & 0x1F) >> 2;
        *g = (((px >> 5) & 0x3F) << 2) | ((px >> 5) & 0x3F) >> 4;
        *b = ((px & 0x1F) << 3) | ((px & 0x1F) >> 2);
    } else {
        uint32_t px = *(uint32_t *)(bb + (size_t)y * line + (size_t)x * 4);
        *r = (px >> 16) & 0xFF; *g = (px >> 8) & 0xFF; *b = px & 0xFF;
    }
}
static int near2(int a, int b) { int d = a - b; if (d < 0) d = -d; return d <= 14; }
static int px_near(int x, int y, int r, int g, int b)
{
    int rr, gg, bb; rd_px(x, y, &rr, &gg, &bb);
    return near2(rr, r) && near2(gg, g) && near2(bb, b);
}
static int region_has(int x, int y, int w, int h, int r, int g, int b)
{
    int cnt = 0;
    for (int dy = 0; dy < h; dy++)
        for (int dx = 0; dx < w; dx++)
            if (px_near(x + dx, y + dy, r, g, b)) cnt++;
    return cnt;
}
#define UNPK(c, rr, gg, bb) do { (rr) = ((c) >> 16) & 0xFF; (gg) = ((c) >> 8) & 0xFF; (bb) = (c) & 0xFF; } while (0)

#define LVX 20
#define LVY 50
#define LVW 440
#define LVH 300
#define ITEM 56
#define CNT 10

static int del_count;       /* on_delete 回调次数 */
static int del_idx;         /* 最后一次删除 idx */
static void on_delete(int idx, void *ctx) { (void)ctx; del_count++; del_idx = idx; }

static int scount(void *ctx) { (void)ctx; return CNT; }
static void sbind(int idx, meow_lv_item *it, void *ctx)
{
    (void)ctx;
    memset(it, 0, sizeof *it);
    static char t[32];
    snprintf(t, sizeof t, "notif %d", idx);
    it->title = t; it->icon_kind = MEOW_LIST_ICON_NONE; it->right = MEOW_LIST_RIGHT_NONE;
    it->enabled = 1;
}

static meow_widget *make_list(void)
{
    meow_widget *lv = meow_listview_create(LVX, LVY, LVW, LVH, 0, NULL, NULL, MEOW_LIST_SEL_NONE);
    meow_listview_set_item_h(lv, ITEM);
    meow_listview_set_vsource(lv, scount, sbind, NULL);
    meow_listview_set_item_renderer(lv, 2, 0, 0);   /* 双行、无图标、无尾件 */
    meow_listview_set_swipe_delete(lv, 1, on_delete, NULL);
    return lv;
}

/* 推进 meow_anim 直到 swipe 动画结束（模拟 on_tick 节拍）。 */
static void pump_swipe(meow_widget *lv)
{
    int guard = 0;
    while (meow_listview_swipe_active(lv) && guard++ < 80) {
        meow_anim_tick();
        usleep(10000);
    }
    meow_anim_tick();
}

int main(void)
{
    meow_ui_opts o = { 480, 720 };
    if (meow_ui_init(&o) != 0) { printf("init failed\n"); return 1; }
    const meow_theme *th = meow_theme_get();
    int err_r, err_g, err_b; UNPK(th->error, err_r, err_g, err_b);

    int row0y = LVY + ITEM / 2;   /* 行 0 中心 y（scroll=0） */

    /* ============ T1 手势判定 / 冲突消解 ============ */
    {
        meow_widget *lv = make_list();
        /* begin 命中可滑行行 → 1 */
        CHECK(meow_listview_swipe_begin(lv, 100, row0y) == 1, "T1 begin on swipe row = 1");
        /* 横向小位移 → 裁定 swipe，move 返回 1（消费） */
        CHECK(meow_listview_swipe_move(lv, 40, row0y) == 1, "T1 move horizontal = 1 (consumed)");
        int dx = meow_listview_swipe_offset(lv);
        CHECK(dx == -60, "T1 dx=-60 got %d", dx);
        /* 又一小位移（不超容差也不改变方向） */
        CHECK(meow_listview_swipe_move(lv, 30, row0y) == 1, "T1 move horizontal 2 = 1");
        CHECK(meow_listview_swipe_end(lv, 30, row0y) == 1, "T1 end started swipe = 1 (bounce)");
        pump_swipe(lv);
        CHECK(meow_listview_swipe_offset(lv) == 0, "T1 bounce back dx=0 got %d", meow_listview_swipe_offset(lv));
        CHECK(del_count == 0, "T1 no delete on bounce");
        meow_widget_free(lv);
    }
    {
        /* 纵向大位移 → 滚动手势优先（move 返回 0 + 取消） */
        meow_widget *lv = make_list();
        CHECK(meow_listview_swipe_begin(lv, 100, row0y) == 1, "T1 begin2 = 1");
        CHECK(meow_listview_swipe_move(lv, 100, row0y + 80) == 0, "T1 vertical move = 0 (yield to scroll)");
        CHECK(meow_listview_swipe_active(lv) == 0, "T1 vertical cancels swipe");
        CHECK(meow_listview_swipe_offset(lv) == 0, "T1 vertical dx=0");
        meow_widget_free(lv);
    }
    {
        /* 非启用行 begin → 0 */
        meow_widget *lv = make_list();
        meow_listview_set_swipe_delete(lv, 0, NULL, NULL);
        CHECK(meow_listview_swipe_begin(lv, 100, row0y) == 0, "T1 disabled begin = 0");
        meow_widget_free(lv);
    }

    /* ============ T2 超阈值 → 删除动画 + on_delete ============ */
    {
        del_count = 0; del_idx = -1;
        meow_widget *lv = make_list();
        CHECK(meow_listview_swipe_begin(lv, 100, row0y) == 1, "T2 begin = 1");
        /* 左滑 200px（阈值=LVW*2/5=176）→ 超阈值 */
        CHECK(meow_listview_swipe_move(lv, 100 - 200, row0y) == 1, "T2 move big left = 1");
        CHECK(meow_listview_swipe_end(lv, 100 - 200, row0y) == 1, "T2 end = 1 (delete anim)");
        CHECK(meow_listview_swipe_active(lv) == 1, "T2 delete anim active");
        pump_swipe(lv);
        CHECK(del_count == 1, "T2 on_delete fired once got %d", del_count);
        CHECK(del_idx == 0, "T2 on_delete idx0 got %d", del_idx);
        CHECK(meow_listview_swipe_active(lv) == 0, "T2 state reset inactive");
        CHECK(meow_listview_swipe_offset(lv) == 0, "T2 dx reset 0 got %d", meow_listview_swipe_offset(lv));
        meow_widget_free(lv);
    }

    /* ============ T3 未超阈值 → 回弹，on_delete 不触发 ============ */
    {
        del_count = 0;
        meow_widget *lv = make_list();
        CHECK(meow_listview_swipe_begin(lv, 100, row0y) == 1, "T3 begin = 1");
        CHECK(meow_listview_swipe_move(lv, 55, row0y) == 1, "T3 move left 45px = 1");
        CHECK(meow_listview_swipe_offset(lv) == -45, "T3 dx=-45 got %d", meow_listview_swipe_offset(lv));
        CHECK(meow_listview_swipe_end(lv, 55, row0y) == 1, "T3 end = 1 (bounce anim)");
        CHECK(meow_listview_swipe_active(lv) == 1, "T3 bounce active");
        pump_swipe(lv);
        CHECK(del_count == 0, "T3 on_delete NOT fired got %d", del_count);
        CHECK(meow_listview_swipe_offset(lv) == 0, "T3 bounce dx=0 got %d", meow_listview_swipe_offset(lv));
        CHECK(meow_listview_swipe_active(lv) == 0, "T3 inactive after bounce");
        meow_widget_free(lv);
    }

    /* ============ T4 点按（无位移）= 行点击，end 返回 0 ============ */
    {
        del_count = 0;
        meow_widget *lv = make_list();
        CHECK(meow_listview_swipe_begin(lv, 100, row0y) == 1, "T4 begin = 1");
        CHECK(meow_listview_swipe_end(lv, 100, row0y) == 0, "T4 tap end = 0 (let App tap_at)");
        CHECK(del_count == 0, "T4 no delete on tap");
        CHECK(meow_listview_swipe_active(lv) == 0, "T4 inactive after tap");
        meow_widget_free(lv);
    }

    /* ============ T5 右露删除区像素（默认 renderer） ============ */
    {
        meow_widget *lv = make_list();
        CHECK(meow_listview_swipe_begin(lv, 100, row0y) == 1, "T5 begin = 1");
        CHECK(meow_listview_swipe_move(lv, 100 - 200, row0y) == 1, "T5 move big left = 1");
        meow_ui_clear(th->bg);
        meow_widget_draw(lv);
        /* 右露区 [LVX+LVW+dx, row0, -dx, ITEM] = [260,50,200,56] → error 底 */
        CHECK(region_has(270, row0y - ITEM / 2 + 4, 180, ITEM - 8, err_r, err_g, err_b) > 50,
              "T5 delete reveal error bg got %d", region_has(270, row0y - ITEM / 2 + 4, 180, ITEM - 8, err_r, err_g, err_b));
        meow_listview_swipe_end(lv, 100 - 200, row0y);
        pump_swipe(lv);
        meow_widget_free(lv);
    }

    meow_ui_shutdown();
    printf("swipe: %d pass / %d fail\n", g_pass, g_fail);
    return g_fail ? 1 : 0;
}