//
// Created by kindring on 2025/12/26.
//

#include "esp_log.h"

#include "app_io.h"

#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/queue.h"



#define TAG "app_io"

static QueueHandle_t g_io_evt_queue = NULL;


static void io_task(void* arg)
{
    uint32_t io_num;
    while (true)
    {
        if(xQueueReceive(g_io_evt_queue, &io_num, portMAX_DELAY))
        {
            // 消抖处理
            vTaskDelay(50 / portTICK_PERIOD_MS);
            if(gpio_get_level(io_num) == 0)
            { // 确认仍然是低电平
                ESP_LOGI(TAG, "GPIO%"PRIu32" interrupt, button pressed", io_num);
                next_audio_mode();
            }
        }
    }
}

static void IRAM_ATTR gpio_isr_handler(void* arg)
{
    const uint32_t gpio_num = (uint32_t) arg;
    xQueueSendFromISR(g_io_evt_queue, &gpio_num, NULL);
}

/**
 * 切换系统状态灯
 * @param on
 * @return
 */
esp_err_t set_led_io(const bool on)
{
    const esp_err_t err = gpio_set_level(IO_LED, on);
    if (err != ESP_OK) {
        ESP_LOGE(TAG, "Set system to %d failed: %s", on, esp_err_to_name(err));
        return err;
    }
    return ESP_OK;
}

esp_err_t init_led_io() {
    // system state led
    const gpio_config_t led_io_conf = {
        .pin_bit_mask = (1ULL << IO_LED),  // GPIO15
        .mode = GPIO_MODE_OUTPUT,               // 输出模式
        .pull_up_en = GPIO_PULLUP_DISABLE,      // 禁用上拉
        .pull_down_en = GPIO_PULLDOWN_DISABLE,  // 禁用下拉
        .intr_type = GPIO_INTR_DISABLE          // 禁用中断
    };

    // 配置GPIO
    const esp_err_t err = gpio_config(&led_io_conf);
    if (err != ESP_OK) {
        ESP_LOGE(TAG, "system led config failed: %s", esp_err_to_name(err));
        return err;
    }

    return set_led_io(0);
}



esp_err_t init_btn_io() {
    // 配置GPIO2为输入模式，用于低电平中断
    const gpio_config_t btn_conf = {
        .pin_bit_mask = (1ULL << IO_BTN),
        .mode = GPIO_MODE_INPUT,
        .pull_up_en = GPIO_PULLUP_ENABLE,       // 启用上拉，按钮按下时拉低
        .pull_down_en = GPIO_PULLDOWN_DISABLE,
        .intr_type = GPIO_INTR_NEGEDGE          // 下降沿触发（按下按钮）
    };

    const esp_err_t err = gpio_config(&btn_conf);
    if (err != ESP_OK) {
        ESP_LOGE(TAG, "BTN config failed: %s", esp_err_to_name(err));
        return err;
    }
    // 注册中断服务

    gpio_isr_handler_add(IO_BTN, gpio_isr_handler, (void*) IO_BTN);
    return ESP_OK;
}

// 更新输出引脚状态
esp_err_t update_output_mode(const audio_mode_t mode)
{
    esp_err_t err = ESP_OK;
    // 根据音频模式设置GPIO19输出状态
    switch(mode) {
        case AUDIO_MODE_NORMAL:
            err = gpio_set_level(IO_OUTPUT_SW, 0); // 低电平
            break;
        case AUDIO_MODE_BASS_BOOST:
            err = gpio_set_level(IO_OUTPUT_SW, 1); // 高电平
            break;
        default:
            err = gpio_set_level(IO_OUTPUT_SW, 0);
            break;
    }
    ESP_LOGD(TAG, "GPIO19 set to: %d", gpio_get_level(IO_OUTPUT_SW));
    return err;
}

// 初始化输出引脚
esp_err_t init_output_io() {
    // 配置GPIO2为输入模式，用于低电平中断
    const gpio_config_t output_conf = {
        .pin_bit_mask = (1ULL << IO_OUTPUT_SW),
        .mode = GPIO_MODE_OUTPUT,
        .pull_up_en = GPIO_PULLUP_DISABLE,
        .pull_down_en = GPIO_PULLDOWN_DISABLE,
        .intr_type = GPIO_INTR_DISABLE
    };

    const esp_err_t err = gpio_config(&output_conf);
    if (err != ESP_OK) {
        ESP_LOGE(TAG, "OUTPUT config failed: %s", esp_err_to_name(err));
        return err;
    }
    return ESP_OK;
}

// 启用或者关闭功放
esp_err_t enable_amp(const bool on) {
    // 低有效, 高无效, 需要将电平反转
    const int io_level = !on;
    const esp_err_t err = gpio_set_level(IO_AMP_EN, io_level );
    if (err != ESP_OK) {
        ESP_LOGE(TAG, "%s apm failed: %s", on? "ENABLE" : "DISABLE", esp_err_to_name(err));
        return err;
    }
    return ESP_OK;
}

esp_err_t init_amp_io() {
    // 配置GPIO32为输出模式并拉低电平
    const gpio_config_t io_conf = {
        .pin_bit_mask = (1ULL << IO_AMP_EN),  // GPIO32
        .mode = GPIO_MODE_OUTPUT,               // 输出模式
        .pull_up_en = GPIO_PULLUP_DISABLE,      // 禁用上拉
        .pull_down_en = GPIO_PULLDOWN_DISABLE,  // 禁用下拉
        .intr_type = GPIO_INTR_DISABLE          // 禁用中断
    };

    // 配置GPIO
    const esp_err_t err = gpio_config(&io_conf);
    if (err != ESP_OK) {
        ESP_LOGE(TAG, "IO_AMP_EN config failed: %s", esp_err_to_name(err));
        return err;
    }
    return enable_amp(false);
}


// 初始化io引脚配置
int init_io() {
    // 安装GPIO ISR服务
    esp_err_t err = gpio_install_isr_service(0);
    g_io_evt_queue = xQueueCreate(10, sizeof(uint32_t));
    xTaskCreate(io_task, "io_task", 2048, NULL, 10, NULL);

    init_amp_io();
    init_output_io();
    init_led_io();
    init_btn_io();

    return 0;
}