package main

import (
	"flag"
	"io/ioutil"
	"log"
	"rain_monitor/api"
	"rain_monitor/db"
	"rain_monitor/em3395ty"
	"rain_monitor/modbus"
	"rain_monitor/scheduler"
	"time"

	"gopkg.in/yaml.v2"
)

// 配置结构体
type Config struct {
	Database struct {
		Host     string `yaml:"host"`
		Port     int    `yaml:"port"`
		User     string `yaml:"user"`
		Password string `yaml:"password"`
		DBName   string `yaml:"dbname"`
	} `yaml:"database"`
	Web struct {
		Port int `yaml:"port"`
	} `yaml:"web"`
	TCP struct {
		Port int `yaml:"port"`
	} `yaml:"tcp"`
	Scheduler struct {
		Enabled                bool   `yaml:"enabled"`
		WeatherStationInterval string `yaml:"weather_station_interval"`
	} `yaml:"scheduler"`
	EM3395TY struct {
		ClientID      string   `yaml:"client_id"`
		Secret        string   `yaml:"secret"`
		BaseURL       string   `yaml:"base_url"`
		Devices       []string `yaml:"devices"`
		QueryInterval string   `yaml:"query_interval"` // 查询间隔
	} `yaml:"em3395ty"`
}

var (
	configFile = flag.String("config", "config.yaml", "配置文件路径")
	config     Config
)

func main() {
	flag.Parse()

	// 加载配置文件
	err := loadConfig(*configFile)
	if err != nil {
		log.Fatalf("加载配置文件失败: %v", err)
	}

	dbConfig := db.DBConfig{
		Host:     config.Database.Host,
		Port:     config.Database.Port,
		User:     config.Database.User,
		Password: config.Database.Password,
		DBName:   config.Database.DBName,
	}

	log.Println("正在连接数据库...")
	err = db.InitDB(dbConfig)
	if err != nil {
		log.Fatalf("数据库初始化失败: %v", err)
	}
	defer db.CloseDB()
	log.Println("数据库连接成功")

	// 初始化EM3395TY配置
	em3395ty.InitConfig(config.EM3395TY.ClientID, config.EM3395TY.Secret, config.EM3395TY.BaseURL)

	log.Println("正在启动TCP服务器...")
	go modbus.StartTCPServer()

	// 配置并启动ModBus设备调度器
	if config.Scheduler.Enabled {
		log.Println("正在启动ModBus设备定时任务调度器...")

		// 解析气象站查询间隔
		weatherStationInterval := 15 * time.Minute // 默认值
		if config.Scheduler.WeatherStationInterval != "" {
			if duration, err := time.ParseDuration(config.Scheduler.WeatherStationInterval); err == nil {
				weatherStationInterval = duration
			} else {
				log.Printf("无法解析气象站查询间隔 '%s'，使用默认值 15m", config.Scheduler.WeatherStationInterval)
			}
		}

		// 设置调度器配置
		schedulerConfig := scheduler.TaskConfig{
			WeatherStationInterval: weatherStationInterval,
			RainGaugeInterval:      time.Hour, // 雨量计固定为整点查询
			Enabled:                true,
		}
		scheduler.SetTaskConfig(schedulerConfig)

		// 启动调度器
		go scheduler.StartScheduler()
	} else {
		log.Println("ModBus设备定时任务调度器已禁用")
	}

	// 启动EM3395TY设备调度器
	if len(config.EM3395TY.Devices) > 0 {
		log.Printf("检测到 %d 个EM3395TY设备，正在启动调度器...", len(config.EM3395TY.Devices))
		em3395tyScheduler := em3395ty.NewScheduler(db.GetDB(), config.EM3395TY.Devices)

		// 设置查询间隔
		if config.EM3395TY.QueryInterval != "" {
			switch config.EM3395TY.QueryInterval {
			case "hourly":
				em3395tyScheduler.SetQueryInterval(em3395ty.IntervalHourly)
			case "30min":
				em3395tyScheduler.SetQueryInterval(em3395ty.IntervalThirtyMin)
			case "10min":
				em3395tyScheduler.SetQueryInterval(em3395ty.IntervalTenMin)
			case "30sec":
				em3395tyScheduler.SetQueryInterval(em3395ty.IntervalThirtySec)
			case "10sec":
				em3395tyScheduler.SetQueryInterval(em3395ty.IntervalTenSec)
			default:
				// 尝试解析为自定义时间间隔
				if duration, err := time.ParseDuration(config.EM3395TY.QueryInterval); err == nil {
					em3395tyScheduler.SetCustomInterval(duration)
				} else {
					log.Printf("无法解析查询间隔 '%s'，使用默认值", config.EM3395TY.QueryInterval)
				}
			}
		}

		go em3395tyScheduler.Start()
	}

	log.Println("正在启动Web服务器...")
	api.StartWebServer()
}

// 加载配置文件
func loadConfig(path string) error {
	data, err := ioutil.ReadFile(path)
	if err != nil {
		return err
	}

	err = yaml.Unmarshal(data, &config)
	if err != nil {
		return err
	}

	log.Printf("配置文件加载成功: %s", path)
	return nil
}