/**
 * @file    test_on_pc.c
 * @brief   自动化测试 — 模拟完整的按键时序序列
 *
 * 编译:
 *   gcc -I inc -DAPP_DEBUG_LOG \
 *       tests/test_on_pc.c src/hal_mock.c src/led_driver.c src/btn_fsm.c src/app_controller.c \
 *       -o test_smart_led && ./test_smart_led
 *
 * 自动运行以下测试:
 *   TEST 1: 单击 → OFF → ON
 *   TEST 2: 双击 → ON → BLINK_SLOW
 *   TEST 3: 长按 → 任意 → BREATHING
 *   TEST 4: 单击退出呼吸灯 → BREATHING → OFF
 */

#ifndef APP_DEBUG_LOG
#define APP_DEBUG_LOG
#endif
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "hal_gpio.h"
#include "led_driver.h"
#include "btn_fsm.h"
#include "app_controller.h"

extern void mock_set_button(uint8_t pressed);

static uint8_t btn_read_pin(uint8_t button_id) {
    (void)button_id;
    return HAL_GPIO_ReadPin(GPIO_PORT_A, GPIO_PIN_0);
}

/* 模拟 N 个 Tick（每个 5ms） */
static void run_ticks(int n) {
    for (int i = 0; i < n; i++) {
        Btn_Tick();
    }
}

/* 模拟按下 */
static void press(void) {
    mock_set_button(1);
    run_ticks(4);  /* 20ms > 15ms 去抖 */
}

/* 模拟释放 */
static void release(void) {
    mock_set_button(0);
    run_ticks(4);
}

/* 模拟等待 N ms */
static void wait_ms(int ms) {
    run_ticks(ms / 5);
}

/* ======== 测试用例 ======== */

static void test_single_click(AppCtrl_S* app) {
    printf("\n========== TEST 1: Single Click (OFF → ON) ==========\n");
    assert(AppCtrl_GetState(app) == APP_STATE_OFF);

    press();
    release();
    wait_ms(400);  /* 等双击超时 */

    AppState_E s = AppCtrl_GetState(app);
    printf("Result: %s\n", AppCtrl_StateName(s));
    assert(s == APP_STATE_ON);
    printf("✅ PASS\n");
}

static void test_double_click(AppCtrl_S* app) {
    printf("\n========== TEST 2: Double Click (ON → BLINK_SLOW) ==========\n");
    assert(AppCtrl_GetState(app) == APP_STATE_ON);

    /* 第一次按下释放 */
    press();
    release();
    wait_ms(100);

    /* 第二次按下释放（在 300ms 内） */
    press();
    release();
    wait_ms(400);  /* 等双击超时 */

    AppState_E s = AppCtrl_GetState(app);
    printf("Result: %s\n", AppCtrl_StateName(s));
    assert(s == APP_STATE_BLINK_SLOW);
    printf("✅ PASS\n");
}

static void test_long_press(AppCtrl_S* app) {
    printf("\n========== TEST 3: Long Press (BLINK_SLOW → BREATHING) ==========\n");
    assert(AppCtrl_GetState(app) == APP_STATE_BLINK_SLOW);

    press();
    wait_ms(1200);  /* 长按 1.2s > 1s 阈值 */
    release();
    wait_ms(100);

    AppState_E s = AppCtrl_GetState(app);
    printf("Result: %s\n", AppCtrl_StateName(s));
    assert(s == APP_STATE_BREATHING);
    printf("✅ PASS\n");
}

static void test_exit_breathing(AppCtrl_S* app) {
    printf("\n========== TEST 4: Single Click Exit (BREATHING → OFF) ==========\n");
    assert(AppCtrl_GetState(app) == APP_STATE_BREATHING);

    press();
    release();
    wait_ms(400);

    AppState_E s = AppCtrl_GetState(app);
    printf("Result: %s\n", AppCtrl_StateName(s));
    assert(s == APP_STATE_OFF);
    printf("✅ PASS\n");
}

/* ======== 主测试入口 ======== */
int main(void) {
    printf("╔══════════════════════════════════════════╗\n");
    printf("║  Smart LED — Automated Test Suite        ║\n");
    printf("╚══════════════════════════════════════════╝\n");

    /* 初始化 */
    LedDriver_S* led = Led_Create(GPIO_PORT_B, GPIO_PIN_0, 1);
    static Btn_FSM btn;
    Btn_Init(&btn, btn_read_pin, 0, 0);
    Btn_Start(&btn);

    AppCtrl_S* app = AppCtrl_Create(led, &btn);
    AppCtrl_Init(app);

    /* 运行测试 */
    test_single_click(app);
    test_double_click(app);
    test_long_press(app);
    test_exit_breathing(app);

    /* 清理 */
    Btn_Stop(&btn);
    AppCtrl_Destroy(app);
    Led_Destroy(led);

    printf("\n╔══════════════════════════════════════════╗\n");
    printf("║  ALL TESTS PASSED ✅                      ║\n");
    printf("╚══════════════════════════════════════════╝\n");

    return 0;
}