/* test_fg_act.c — M2.17 keep_awake：前台顶层 activity（fg_act）清空兜底宿主单测。
 *
 * 验证「App 会话退出/崩溃回收时清 fg_act」这一 launcher 兜底所依赖的状态机：
 *   - meow_fg_act_set(app,act) 依注册表 route.keep_awake → fg_keep_awake()==1；
 *   - App 会话结束（本工程在 launch_app_chain 退出尾调 meow_fg_act_back()）→ fg 清空、
 *     fg_keep_awake() 回 0（主页不再被 keep_awake 卡住自动息屏）；
 *   - App 存活时（仅有 ACT_FOCUS，未会话结束）fg_act 保持不清。
 * 该测试把真实 app_launcher.c 整包含进来（同 test_lock_screen / test_notif_panel 手法），
 * 用 -ffunction-sections -Wl,--gc-sections 只保留 main() 触及的 fg_act 原语，其余重函数
 * （fork/exec/waitpid/fb）被剔除，故只需 stub logmsg。
 *
 * 运行（patch_v2/meow_launcherd 下）：
 *   gcc -D_GNU_SOURCE -Wall -Wextra -ffunction-sections -Wl,--gc-sections \
 *       -I. -o test_fg_act test_fg_act.c && ./test_fg_act
 * 全 PASS -> exit 0。
 */
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdio.h>
#include <string.h>
#include <stdarg.h>

/* logmsg：fg_act 原语的唯一外部依赖（app_launcher.c 内定义，需在 include 前提供）。 */
void logmsg(const char *fmt, ...)
{
    (void)fmt;
}

#include "app_launcher.c"   /* 真实实现：g_accts/g_naccts/meow_fg_act_{set,back}/fg_keep_awake */

static int g_fail = 0;
#define CHECK(cond, msg) do { \
    if (!(cond)) { fprintf(stderr, "FAIL: %s (%s:%d)\n", msg, __FILE__, __LINE__); g_fail++; } \
    else fprintf(stderr, "ok: %s\n", msg); \
} while (0)

int main(void)
{
    /* ---- 基线：无上报 = 主界面（非 keep_awake）---- */
    CHECK(fg_keep_awake() == 0, "baseline: empty fg_act -> keep_awake=0");

    /* ---- 注册 ncm 的 player activity 声明 keep_awake（模拟 app.json awake）---- */
    struct meow_acct *a = meow_acct_upsert("dev.player.ncm");
    CHECK(a != NULL, "register dev.player.ncm");
    a->nroute = 1;
    strncpy(a->routes[0].act, "player", sizeof a->routes[0].act - 1);
    a->routes[0].act[sizeof a->routes[0].act - 1] = 0;
    a->routes[0].keep_awake = 1;

    /* ---- sim A：App 存活、正报 keep_awake activity（如 ncm 播放页）----
     * 这是「App 在 keep_awake activity 时 fg_act 保持（不清）」的契约点。 */
    meow_fg_act_set("dev.player.ncm", "player");
    CHECK(fg_keep_awake() == 1, "ncm playing -> keep_awake=1 (保持, 不清)");
    CHECK(strcmp(g_fg_app, "dev.player.ncm") == 0, "fg_app kept while app alive");
    CHECK(strcmp(g_fg_act, "player") == 0, "fg_act kept while app alive");

    /* ---- sim B：App 会话结束/崩溃回收（launch_app_chain 退出尾调用 meow_fg_act_back()）---- */
    meow_fg_act_back();
    CHECK(fg_keep_awake() == 0, "app session end -> keep_awake=0 (兜底已清)");
    CHECK(g_fg_act[0] == 0, "fg_act cleared on session end");
    CHECK(g_fg_app[0] == 0, "fg_app cleared on session end");

    /* ---- sim C：ACT_FOCUS(home) 正常弹回 home（agent-356）→ 非 keep_awake，且可再被兜底幂等清 ---- */
    meow_fg_act_set("dev.player.ncm", "home");           /* home 未声明 keep_awake */
    CHECK(fg_keep_awake() == 0, "ACT_FOCUS(home) -> keep_awake=0");
    meow_fg_act_back();                                  /* 兜底幂等：再清一次不冲突 */
    CHECK(g_fg_act[0] == 0 && fg_keep_awake() == 0, "back after home focus idempotent");

    /* ---- sim D：act 为空（set(NULL act)）/未知 app / 未知 act → 非 keep_awake ---- */
    meow_fg_act_set("dev.player.ncm", NULL);
    CHECK(fg_keep_awake() == 0, "set(act=NULL) -> keep_awake=0");
    meow_fg_act_set("no.such.app", "player");
    CHECK(fg_keep_awake() == 0, "unregistered app -> keep_awake=0");
    meow_fg_act_set("dev.player.ncm", "notascreen");
    CHECK(fg_keep_awake() == 0, "unknown act in known app -> keep_awake=0");

    if (g_fail) { fprintf(stderr, "\n== %d assertion(s) FAILED ==\n", g_fail); return 1; }
    fprintf(stderr, "\n== test_fg_act ALL PASS ==\n");
    return 0;
}