package main

import (
	"context"
	"fmt"
	"github.com/zmb3/spotify/v2"
	spotifyauth "github.com/zmb3/spotify/v2/auth"
	"golang.org/x/oauth2"
	"log"
	"net/http"
	"os"
	"strings"
	"time"
)

func main() {

	ctx := context.Background()

	token := &oauth2.Token{
		AccessToken:  os.Getenv("SPOTIFY_ACCESS_TOKEN"),
		RefreshToken: os.Getenv("SPOTIFY_REFRESH_TOKEN"),
		TokenType:    "Bearer",
		Expiry:       time.Now(),
	}

	endpoint := os.Getenv("MISSKEY_ENDPOINT")
	misskeyToken := "Bearer " + os.Getenv("MISSKEY_TOKEN")

	httpClient := spotifyauth.New(
		spotifyauth.WithClientID(os.Getenv("SPOTIFY_CLIENT_ID")),
		spotifyauth.WithClientSecret(os.Getenv("SPOTIFY_CLIENT_SECRET")),
	).Client(ctx, token)
	client := spotify.New(httpClient)

	lastId := ""

	for {
		playing, err := client.PlayerCurrentlyPlaying(ctx)
		if err != nil {
			log.Println(err)
			time.Sleep(10 * time.Minute)
			continue
		}

		if !playing.Playing {
			time.Sleep(5 * time.Minute)
			continue
		}

		if playing.Item.ID.String() == lastId {
			time.Sleep(30 * time.Second)
			continue
		}

		lastId = playing.Item.ID.String()

		builder := strings.Builder{}

		for _, artist := range playing.Item.Artists {
			builder.WriteString("?[<plain>")
			builder.WriteString(artist.Name)
			builder.WriteString("</plain>](<https://open.spotify.com/artist/")
			builder.WriteString(artist.ID.String())
			builder.WriteString(">),")
		}

		before, _ := strings.CutSuffix(builder.String(), ",")
		text := fmt.Sprintf("[<plain>%s</plain>](<https://open.spotify.com/track/%s>)\\n<small>%s</small>", playing.Item.Name, playing.Item.ID, before)

		body := fmt.Sprintf("{  \"visibility\" : \"home\",  \"text\": \"%s\\n\\n#NowPlaying #usbharu_NowPlaying \"}", text)

		request, err := http.NewRequest("POST", endpoint, strings.NewReader(body))
		if err != nil {
			log.Println(err)
			continue
		}
		request.Header.Add("Authorization", misskeyToken)
		request.Header.Add("Content-Type", "application/json")

		misskeyHttpClient := new(http.Client)
		post, err := misskeyHttpClient.Do(request)
		if err != nil {
			log.Println(err)
			continue
		}
		if post.StatusCode != 200 {
			log.Printf("Status is not 200. status: %d \n", post.StatusCode)
			continue
		}

		time.Sleep(1 * time.Minute)
	}

}