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#include "esp_zb_light.h"
#include "esp_check.h"
#include "esp_log.h"
#include "nvs_flash.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "ha/esp_zigbee_ha_standard.h"
#include "driver/gpio.h"

#if !defined ZB_ED_ROLE
#error Define ZB_ED_ROLE in idf.py menuconfig to compile light (End Device) source code.
#endif

static const char *TAG = "ESP_ZB_ON_OFF_LIGHT";
#define BLINK_GPIO 15

/********************* Define functions **************************/
static esp_err_t deferred_driver_init(void)
{
    ESP_LOGI(TAG, "Deferred driver init called");
    light_driver_init(LIGHT_DEFAULT_OFF);
    return ESP_OK;
}

static void configure_led(void)
{
    ESP_LOGI(TAG, "Configuring LED");
    gpio_reset_pin(BLINK_GPIO);
    gpio_set_direction(BLINK_GPIO, GPIO_MODE_OUTPUT);
}

static void bdb_start_top_level_commissioning_cb(uint8_t mode_mask)
{
    ESP_LOGI(TAG, "Starting top-level commissioning");
    ESP_RETURN_ON_FALSE(esp_zb_bdb_start_top_level_commissioning(mode_mask) == ESP_OK, , TAG, "Failed to start Zigbee commissioning");
}

void esp_zb_app_signal_handler(esp_zb_app_signal_t *signal_struct)
{
    ESP_LOGI(TAG, "Signal handler called");
    uint32_t *p_sg_p = signal_struct->p_app_signal;
    esp_err_t err_status = signal_struct->esp_err_status;
    esp_zb_app_signal_type_t sig_type = *p_sg_p;
    switch (sig_type) {
    case ESP_ZB_ZDO_SIGNAL_SKIP_STARTUP:
        ESP_LOGI(TAG, "Initialize Zigbee stack");
        esp_err_t ret = esp_zb_bdb_start_top_level_commissioning(ESP_ZB_BDB_MODE_INITIALIZATION);
        ESP_LOGE(TAG, "Code: %s", esp_err_to_name(ret));
        
        break;
    case ESP_ZB_BDB_SIGNAL_DEVICE_FIRST_START:
    case ESP_ZB_BDB_SIGNAL_DEVICE_REBOOT:
        if (err_status == ESP_OK) {
            ESP_LOGI(TAG, "Deferred driver initialization %s", deferred_driver_init() ? "failed" : "successful");
            ESP_LOGI(TAG, "Device started up in %s factory-reset mode", esp_zb_bdb_is_factory_new() ? "" : "non");
            if (esp_zb_bdb_is_factory_new()) {
                ESP_LOGI(TAG, "Start network steering");
                esp_zb_bdb_start_top_level_commissioning(ESP_ZB_BDB_MODE_NETWORK_STEERING);
            } else {
                ESP_LOGI(TAG, "Device rebooted");
            }
        } else {
            ESP_LOGW(TAG, "Failed to initialize Zigbee stack (status: %s)", esp_err_to_name(err_status));
        }
        break;
    case ESP_ZB_BDB_SIGNAL_STEERING:
        if (err_status == ESP_OK) {
            esp_zb_ieee_addr_t extended_pan_id;
            esp_zb_get_extended_pan_id(extended_pan_id);
            ESP_LOGI(TAG, "Joined network successfully (Extended PAN ID: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x, PAN ID: 0x%04hx, Channel:%d, Short Address: 0x%04hx)",
                     extended_pan_id[7], extended_pan_id[6], extended_pan_id[5], extended_pan_id[4],
                     extended_pan_id[3], extended_pan_id[2], extended_pan_id[1], extended_pan_id[0],
                     esp_zb_get_pan_id(), esp_zb_get_current_channel(), esp_zb_get_short_address());
        } else {
            ESP_LOGI(TAG, "Network steering was not successful (status: %s)", esp_err_to_name(err_status));
            esp_zb_scheduler_alarm((esp_zb_callback_t)bdb_start_top_level_commissioning_cb, ESP_ZB_BDB_MODE_NETWORK_STEERING, 150000); // 5 Sekunden
        }
        break;
    default:
        ESP_LOGI(TAG, "ZDO signal: %s (0x%x), status: %s", esp_zb_zdo_signal_to_string(sig_type), sig_type, esp_err_to_name(err_status));
        break;
    }
}

static esp_err_t zb_attribute_handler(const esp_zb_zcl_set_attr_value_message_t *message)
{
    ESP_LOGI(TAG, "Attribute handler called");
    esp_err_t ret = ESP_OK;
    bool light_state = 0;

    ESP_RETURN_ON_FALSE(message, ESP_FAIL, TAG, "Empty message");
    ESP_RETURN_ON_FALSE(message->info.status == ESP_ZB_ZCL_STATUS_SUCCESS, ESP_ERR_INVALID_ARG, TAG, "Received message: error status(%d)",
                        message->info.status);
    ESP_LOGI(TAG, "Received message: endpoint(%d), cluster(0x%x), attribute(0x%x), data size(%d)", message->info.dst_endpoint, message->info.cluster,
             message->attribute.id, message->attribute.data.size);
    if (message->info.dst_endpoint == HA_ESP_LIGHT_ENDPOINT) {
        if (message->info.cluster == ESP_ZB_ZCL_CLUSTER_ID_ON_OFF) {
            if (message->attribute.id == ESP_ZB_ZCL_ATTR_ON_OFF_ON_OFF_ID && message->attribute.data.type == ESP_ZB_ZCL_ATTR_TYPE_BOOL) {
                light_state = message->attribute.data.value ? *(bool *)message->attribute.data.value : light_state;
                ESP_LOGI(TAG, "Light sets to %s", light_state ? "On" : "Off");
                gpio_set_level(BLINK_GPIO, light_state);
            }
        }
    }
    return ret;
}

static esp_err_t zb_action_handler(esp_zb_core_action_callback_id_t callback_id, const void *message)
{
    ESP_LOGI(TAG, "Action handler called");
    esp_err_t ret = ESP_OK;
    switch (callback_id) {
    case ESP_ZB_CORE_SET_ATTR_VALUE_CB_ID:
        ret = zb_attribute_handler((esp_zb_zcl_set_attr_value_message_t *)message);
        break;
    default:
        ESP_LOGW(TAG, "Received Zigbee action(0x%x) callback", callback_id);
        break;
    }
    return ret;
}

static void esp_zb_task(void *pvParameters)
{
    ESP_LOGI(TAG, "Starting Zigbee task");
    /* initialize Zigbee stack */
    esp_zb_cfg_t zb_nwk_cfg = ESP_ZB_ZED_CONFIG();
    esp_zb_init(&zb_nwk_cfg);
    esp_zb_on_off_light_cfg_t light_cfg = ESP_ZB_DEFAULT_ON_OFF_LIGHT_CONFIG();
    esp_zb_ep_list_t *esp_zb_on_off_light_ep = esp_zb_on_off_light_ep_create(HA_ESP_LIGHT_ENDPOINT, &light_cfg);
    esp_zb_device_register(esp_zb_on_off_light_ep);
    esp_zb_core_action_handler_register(zb_action_handler);
    esp_zb_set_primary_network_channel_set(1 << 11); // Beispiel: Kanal 11
    ESP_ERROR_CHECK(esp_zb_start(false));
    esp_zb_main_loop_iteration();
}

void app_main(void)
{
    ESP_LOGI(TAG, "Main application started");
    configure_led();
    esp_zb_platform_config_t config = {
        .radio_config = ESP_ZB_DEFAULT_RADIO_CONFIG(),
        .host_config = ESP_ZB_DEFAULT_HOST_CONFIG(),
    };
    ESP_ERROR_CHECK(nvs_flash_init());
    ESP_ERROR_CHECK(esp_zb_platform_config(&config));
    xTaskCreate(esp_zb_task, "Zigbee_main", 4096, NULL, 5, NULL);
}