package services

import (
	"context"
	"git.aiterp.net/lucifer/new-server/app/config"
	"git.aiterp.net/lucifer/new-server/models"
	"log"
	"strconv"
	"time"
)

func CheckNewDevices() {
	go func() {
		// Wait a bit before the first to let bridges connect.
		time.Sleep(time.Second * 5)
		err := checkNewDevices()
		if err != nil {
			log.Println("Failed to sync lights:", err)
		}

		for range time.NewTicker(time.Second * 30).C {
			err := checkNewDevices()
			if err != nil {
				log.Println("Failed to sync lights:", err)
			}
		}
	}()
}

func checkNewDevices() error {
	ctx, cancel := context.WithTimeout(context.Background(), time.Second*27)
	defer cancel()

	bridges, err := config.BridgeRepository().FetchAll(ctx)
	if err != nil {
		return err
	}

	for _, bridge := range bridges {
		driver, err := config.DriverProvider().Provide(bridge.Driver)
		if err != nil {
			log.Println("Unknown/unsupported driver:", bridge.Driver)
			continue
		}

		savedDevices, err := config.DeviceRepository().FetchByReference(ctx, models.RKBridgeID, strconv.Itoa(bridge.ID))
		if err != nil {
			log.Println("Failed to list devices from db:", err)
			continue
		}

		driverDevices, err := driver.ListDevices(ctx, bridge)
		if err != nil {
			log.Println("Failed to list devices from driver:", err)
			continue
		}

		foundNewDevices := false
	SaveLoop:
		for _, driverDevice := range driverDevices {
			for _, savedDevice := range savedDevices {
				if savedDevice.InternalID == driverDevice.InternalID {
					continue SaveLoop
				}
			}

			log.Println("Saving new device", driverDevice.InternalID)

			err := config.DeviceRepository().Save(ctx, &driverDevice)
			if err != nil {
				log.Println("Failed to save device:", err)
				continue
			}

			foundNewDevices = true
		}

		// If new devices were found, publish them so that the driver can be set up.
		if foundNewDevices {
			savedDevices, err := config.DeviceRepository().FetchByReference(ctx, models.RKBridgeID, strconv.Itoa(bridge.ID))
			if err != nil {
				log.Println("Failed to fetch devices from db second time:", err)
				continue
			}

			err = driver.Publish(ctx, bridge, savedDevices)
			if err != nil {
				log.Println("Failed to list devices from db:", err)
				continue
			}
		}
	}

	return nil
}