/* test_meow_repaint.c — M40 F5：解锁后「强制 App 整帧重画」请求文件的写/读/删除语义。
 *
 * 编译（patch_v2/sdk 下）：
 *   gcc -Wall -Wextra -I. test_meow_repaint.c -o test_meow_repaint
 * 运行：./test_meow_repaint   （exit 0=PASS）
 *
 * 语义：launcher 写文件 → SDK present 调 meow_ui_repaint_requested() 读到即删并返回 1
 * （dirty_full 一次）；文件不存在返回 0。路径可用 MEOW_APP_REPAINT_FILE 覆盖（测试隔离）。
 */
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "meow_ui_repaint.h"

static int g_fail = 0;

static void check(const char *name, int ok)
{
    if (ok) {
        printf("ok   %s\n", name);
    } else {
        printf("FAIL %s\n", name);
        g_fail = 1;
    }
}

static int write_file(const char *path)
{
    int fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
    if (fd < 0) return -1;
    if (write(fd, "1", 1) != 1) { close(fd); return -1; }
    close(fd);
    return 0;
}

int main(void)
{
    const char *tmp = getenv("TMPDIR");
    char path[512];
    snprintf(path, sizeof path, "%s/m40_repaint_XXXXXX", (tmp && tmp[0]) ? tmp : "/tmp");
    int fd = mkstemp(path);
    if (fd < 0) { perror("mkstemp"); return 2; }
    close(fd);
    unlink(path);                          /* 先清空，测试从「无请求」开始 */

    setenv("MEOW_APP_REPAINT_FILE", path, 1);
    check("path follows env", !strcmp(meow_ui_repaint_path(), path));

    check("no request file -> 0", meow_ui_repaint_requested() == 0);

    check("write request", write_file(path) == 0);
    check("request present", access(path, F_OK) == 0);
    check("first check consumes -> 1", meow_ui_repaint_requested() == 1);
    check("file deleted after consume", access(path, F_OK) != 0);
    check("second check -> 0 (one-shot)", meow_ui_repaint_requested() == 0);

    /* 再写一次仍能消费（launcher 每次解锁/菜单关闭都会写） */
    check("write again", write_file(path) == 0);
    check("consume again -> 1", meow_ui_repaint_requested() == 1);

    unlink(path);
    printf("\n%s\n", g_fail ? "SOME TESTS FAILED" : "ALL PASS");
    return g_fail ? 1 : 0;
}