package main

import (
	"bufio"
	"context"
	"encoding/json"
	"flag"
	"fmt"
	"git.aiterp.net/lucifer/new-server/app/config"
	"git.aiterp.net/lucifer/new-server/internal/color"
	"git.aiterp.net/lucifer/new-server/models"
	"log"
	"os"
	"sort"
	"strconv"
	"strings"
	"time"
)

var flagDriver = flag.String("driver", string(models.DTNanoLeaf), "The bridge driver to use")
var flagAddress = flag.String("address", "127.0.0.1", "The bridge's address")
var flagToken = flag.String("token", "", "The bridge's access token / api key / login")
var flagPair = flag.Bool("pair", false, "Try to pair with the bridge.")
var flagSearch = flag.Bool("search", false, "Search for devices first.")
var flagSearchTimeout = flag.Duration("search-timeout", time.Second*3, "Timeout for device search.")

func main() {
	flag.Parse()

	// Find drivers
	driver, err := config.DriverProvider().Provide(models.DriverKind(*flagDriver))
	if err != nil {
		log.Fatalln("Failed to find driver:", err)
	}

	// Find bridge
	bridges, err := driver.SearchBridge(context.Background(), *flagAddress, *flagToken, !*flagPair)
	if err != nil {
		log.Fatalln("Failed to search bridge:", err)
	}
	if len(bridges) == 0 {
		log.Fatalln("No bridges found")
	}
	bridge := bridges[0]
	if !*flagPair {
		bridge.Token = *flagToken
	} else {
		log.Println("New token:", bridge.Token)
	}

	ch := config.EventChannel
	go func() {
		err := driver.Run(context.Background(), bridge, ch)
		if err != nil {
			log.Fatalln("Run bridge stopped:", err)
		}
	}()
	time.Sleep(time.Second)

	// List devices
	var devices []models.Device
	if *flagSearch {
		devices, err = driver.SearchDevices(context.Background(), bridge, *flagSearchTimeout)
		if err != nil {
			log.Fatalln("Failed to search devices:", err)
		}
	} else {
		devices, err = driver.ListDevices(context.Background(), bridge)
		if err != nil {
			log.Fatalln("Failed to list devices:", err)
		}
	}

	idMap := make(map[string]int)
	nextId := len(devices) + 1
	for i := range devices {
		devices[i].ID = i + 1
		idMap[devices[i].InternalID] = i + 1
	}

	go func() {
		reader := bufio.NewReader(os.Stdin)

		_, _ = fmt.Fprintln(os.Stderr, "Format: [id1,id2,...] [on|off] [color] [intensity]")
		for _, device := range devices {
			_, _ = fmt.Fprintf(os.Stderr, "Device: %d - %s %+v\n", device.ID, device.InternalID, device.Capabilities)
		}
		_, _ = fmt.Fprintln(os.Stderr, "Format: [id1,id2,...] [on|off] [color]")

		for {
			text, _ := reader.ReadString('\n')
			text = strings.Trim(text, "\t  \r\n")

			if text == "search" {
				_, _ = driver.SearchDevices(context.Background(), bridge, time.Second)
			}
			if text == "list" || text == "search" || text == "json" {
				devices, err = driver.ListDevices(context.Background(), bridge)
				if err != nil {
					log.Fatalln("Failed to list devices:", err)
				}

				for i, device := range devices {
					if extId, ok := idMap[device.InternalID]; ok {
						devices[i].ID = extId
					} else {
						idMap[device.InternalID] = nextId
						devices[i].ID = nextId

						nextId += 1
					}

					if text != "json" {
						_, _ = fmt.Fprintf(os.Stderr, "Device: %d - %s %+v\n", device.ID, device.InternalID, device.Capabilities)
					}
				}
			}
			if text == "json" {
				j, _ := json.MarshalIndent(devices, "", "  ")
				fmt.Println(string(j))
			}

			tokens := strings.Split(text, " ")
			if len(tokens) < 4 {
				continue
			}

			color, err := color.Parse(tokens[2])
			if err != nil {
				_, _ = fmt.Fprintln(os.Stderr, "Invalid color:", err)
				continue
			}

			intensity, _ := strconv.ParseFloat(tokens[3], 64)

			power := strings.ToLower(tokens[1]) == "on"

			idsStr := strings.Split(tokens[0], ",")
			ids := make([]int, 0, len(idsStr))
			for _, idStr := range idsStr {
				if idStr == "*" {
					ids = append(ids[:0], -1)
					break
				}

				id, err := strconv.Atoi(idStr)
				if err != nil {
					continue
				}

				ids = append(ids, id)
			}

			updatedDevices := devices[:0:0]
			for _, device := range devices {
				for _, id := range ids {
					if id == -1 || id == device.ID {
						if (color.IsKelvin() && device.HasCapability(models.DCColorKelvin)) || (color.IsHueSat() && device.HasCapability(models.DCColorHS)) {
							device.State.Color = color
						}
						if device.HasCapability(models.DCPower) {
							device.State.Power = power
						}
						if device.HasCapability(models.DCIntensity) {
							device.State.Intensity = intensity
						}

						updatedDevices = append(updatedDevices, device)
					}
				}
			}

			if len(updatedDevices) > 0 {
				err := driver.Publish(context.Background(), bridge, updatedDevices)
				if err != nil {
					log.Fatalln("Publish to bridge failed:", err)
					return
				}
			}
		}
	}()

	for event := range ch {
		_, _ = fmt.Fprintf(os.Stderr, "Event %s", event.Name)
		keys := make([]string, 0, 8)
		for key := range event.Payload {
			keys = append(keys, key)
		}
		sort.Strings(keys)
		for _, key := range keys {
			_, _ = fmt.Fprintf(os.Stderr, " %s=%#+v", key, event.Payload[key])
		}
		_, _ = fmt.Fprint(os.Stderr, "\n")
	}
}