/*
 * SPDX-FileCopyrightText: 2022 Helmut Pozimski <helmut@pozimski.eu>
 *
 * SPDX-License-Identifier: GPL-2.0-only
 */

#include <time.h>

#include <freertos/FreeRTOS.h>
#include <freertos/event_groups.h>
#include <driver/gpio.h>
#include <nvs_flash.h>
#include <esp_log.h>
#include <esp_wifi.h>

#include "wifi.h"
#include "configuration.h"
#include "ds3231.h"
#include "tm1637.h"
#include "time_sync.h"
#include "time_display.h"
#include "alarm_task.h"
#include "api.h"
#include "storage.h"
#include "cleanup_task.h"
#include "wifi_management_task.h"


static const char* STORAGE_NAMESPACE = "a1";

static void IRAM_ATTR gpio_interrupt_handler(void *args)
{
    uint8_t* button_pressed_flag = (uint8_t*)args;
    *button_pressed_flag = 1;
}

static void init_peripherals(uint8_t* button_pressed_flag, uint8_t* wifi_enabled_flag) {
	ESP_ERROR_CHECK(nvs_flash_init());
	ESP_ERROR_CHECK(esp_netif_init());
   ESP_ERROR_CHECK(esp_event_loop_create_default());

	wifi_init();
  	wifi_start();
  	*wifi_enabled_flag = 1;

	ESP_ERROR_CHECK(storage_init(STORAGE_NAMESPACE));
	ds3231_init(DS3231_SDA_PIN, DS3231_SCL_PIN);
	tm1637_init(TM1637_CLK_PIN, TM1637_DIO_PIN, true, 1);

   esp_rom_gpio_pad_select_gpio(BUTTON_INTERRUPT_PIN);
   gpio_set_direction(BUTTON_INTERRUPT_PIN, GPIO_MODE_INPUT);
   gpio_pulldown_en(BUTTON_INTERRUPT_PIN);
   gpio_pullup_dis(BUTTON_INTERRUPT_PIN);
   gpio_set_intr_type(BUTTON_INTERRUPT_PIN, GPIO_INTR_POSEDGE);
   gpio_install_isr_service(0);
   gpio_isr_handler_add(BUTTON_INTERRUPT_PIN, gpio_interrupt_handler, (void*)button_pressed_flag);
}

void app_main(void) {
	static httpd_handle_t server;
	static uint8_t button_pressed_flag = 0;
	static uint8_t wifi_enabled_flag = 0;
	static TaskHandle_t alarm_task_handle;
	static alarm_parameters alarm_task_parameters = {
		.button_pressed_flag = &button_pressed_flag,
		.task_handle = &alarm_task_handle
	};
	struct tm current_time;

	init_peripherals(&button_pressed_flag, &wifi_enabled_flag);

   ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_STA_GOT_IP, &connect_handler, &server));
   ESP_ERROR_CHECK(esp_event_handler_register(WIFI_EVENT, WIFI_EVENT_STA_DISCONNECTED, &disconnect_handler, &server));
   server = start_webserver(&alarm_task_handle);

	ds3231_read_date_time(&current_time);
	sntp_start(21600);
	if (current_time.tm_year == 0) {
		await_sntp_sync();
	}
	
	xTaskCreate(display_update_task, "display_update_task", 2048, NULL, 8, NULL);
	xTaskCreate(alarm_task, "alarm_task", 2048, (void*) &alarm_task_parameters, 7, NULL);
	xTaskCreate(cleanup_task, "cleanup_task", 2048, (void*) STORAGE_NAMESPACE, 1, NULL);
	xTaskCreate(wifi_management_task, "wifi_management_task", 2048, (void*) &wifi_enabled_flag, 1, NULL);
}