spotifytobandcamp/server.go

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package main
import (
"fmt"
"log"
"time"
"errors"
"strings"
"strconv"
"net/http"
"encoding/json"
"github.com/gofiber/fiber/v2"
"github.com/undertideco/bandcamp"
"github.com/gofiber/template/html"
"github.com/gofiber/fiber/v2/middleware/recover"
"github.com/gofiber/fiber/v2/middleware/session"
)
var MyClient = &http.Client{}
var MyResp = &RespBandcamp{}
var SpotifyAPI = newTokenUser()
//var SpotifyAPI = &TokenUser{}
var Session = session.New()
var Errors string
/*
check artist and album
items[x].track.album.name et items[x].track.album.artists[0].name
*/
func searchAlbumBandcamp(album string, artist string) (bool, string) {
bandcampClient := bandcamp.NewClient()
results, err := bandcampClient.Search(album)
if err != nil {
log.Println(err)
return false, ""
}
if (strings.Contains(results[0].Title, album) || strings.Contains(album, results[0].Title)) && strings.Compare(results[0].Artist, artist) == 0 {
return true, results[0].URL
} else {
return false, ""
}
}
func searchArtistBandcamp(artist string) (bool, string) {
bandcampClient := bandcamp.NewClient()
results, err := bandcampClient.Search(artist)
if err != nil {
log.Println(err)
return false, ""
}
if strings.Compare(results[0].Artist, artist) == 0 {
return true, strings.Split(results[0].URL, "/album/")[0]
} else {
return false, ""
}
}
func testSpotifyPlaylist(token, tokentype, id string) error {
req, e := http.NewRequest("GET",
"https://api.spotify.com/v1/playlists/"+id+"/tracks", nil)
if e != nil {
return e
}
req.Header.Add("Accept", "application/json")
req.Header.Add("Content-Type", "application/json")
req.Header.Add("Authorization", tokentype + " " + token)
res, err := MyClient.Do(req)
if err != nil {
return err
}
switch res.StatusCode {
case 400: return errors.New("La requete sest mal exécutée.")
case 401: return errors.New("La Playlist semble être privée.")
case 403: return errors.New("Accès refusé (token peut-être périmé).")
case 404: return errors.New("Playlist inexistante.")
}
return nil
}
func getAllTracksPlaylist(token, tokentype, id string, offset int) (SpotifyPlaylist, error) {
ret := SpotifyPlaylist{}
req, _ := http.NewRequest("GET",
"https://api.spotify.com/v1/playlists/"+id+"/tracks?offset="+strconv.FormatInt(int64(offset), 10),
nil)
req.Header.Add("Accept", "application/json")
req.Header.Add("Content-Type", "application/json")
req.Header.Add("Authorization", tokentype + " " + token)
res, _ := MyClient.Do(req)
playlist := &SpotifyPlaylist{}
defer res.Body.Close()
err := json.NewDecoder(res.Body).Decode(&playlist)
if err != nil {
return ret, err
fmt.Printf("error:", err)
}
ret = *playlist
if ret.Total > offset {
r, e := getAllTracksPlaylist(token, tokentype, id, offset + 100)
if e != nil {
return ret, e
}
ret.Items = append(ret.Items, r.Items...)
}
return ret, nil
}
/*
id de la playlist
*/
func getListPlaylist(id, token, tokentype string) {
playlist, err := getAllTracksPlaylist(token, tokentype, id, 0)
if err != nil {
//fmt.Printf("error:", err.Error())
log.Panic("error")
}
var find bool
var tmp string
MyResp.Todo = len(playlist.Items)
MyResp.Done = 0
for i := 0; i < len(playlist.Items); i++ {
find, tmp = searchAlbumBandcamp(playlist.Items[i].Track.Album.Name,
playlist.Items[i].Track.Album.Artists[0].Name)
if find {
MyResp.AddAlbum(newUrlBandcamp(
playlist.Items[i].Track.Album.Artists[0].Name,
playlist.Items[i].Track.Album.Name,
playlist.Items[i].Track.Album.ExternalUrls.Spotify,
tmp))
} else {
find, tmp = searchArtistBandcamp(playlist.Items[i].Track.Album.Artists[0].Name)
if find {
MyResp.AddArtist(newUrlBandcamp(
playlist.Items[i].Track.Album.Artists[0].Name,
playlist.Items[i].Track.Album.Name,
playlist.Items[i].Track.Album.ExternalUrls.Spotify,
tmp))
} else {
MyResp.AddNotfound(newUrlWoBandcamp(
playlist.Items[i].Track.Album.Artists[0].Name,
playlist.Items[i].Track.Album.Name,
playlist.Items[i].Track.Album.ExternalUrls.Spotify))
}
}
MyResp.Done++
if i % 10 == 0 {
time.Sleep(5 * time.Second)
}
}
fmt.Printf("\nFinish\n")
}
func formHandler (c *fiber.Ctx) error {
sess, _ := Session.Get(c)
if sess.Get("token") == nil {
log.Panic("Vous nêtes pas connecté à Spotify.")
}
token := sess.Get("token").(string)
tokentype := sess.Get("tokentype").(string)
id := c.FormValue("id")
e := testSpotifyPlaylist(token, tokentype, id)
if e != nil {
log.Panic(e.Error())
}
c.Set("Location", "/feudecamp.html")
go getListPlaylist(id, token, tokentype)
return c.SendStatus(303)
}
func getNew(c *fiber.Ctx) error {
/* read session */
c.JSON(MyResp)
MyResp.Albums = nil
MyResp.Artists = nil
MyResp.Notfound = nil
return c.SendStatus(201)
}
func mytoken(c *fiber.Ctx) error {
err := c.BodyParser(&SpotifyAPI)
if err != nil {
log.Panic(err.Error())
} else {
sess, err := Session.Get(c)
if err != nil {
log.Panic(err.Error())
}
sess.Set("token", SpotifyAPI.Token)
sess.Set("expire", SpotifyAPI.ExpiresIn)
sess.Set("tokentype", SpotifyAPI.TokenType)
sess.Set("creation", time.Now().GoString())
err = sess.Save()
if err != nil {
log.Panic(err.Error())
}
}
//sess.Set("creation", time.Now())
return c.SendStatus(201)
}
func spotifyCallback(c *fiber.Ctx) error {
if c.Query("error") != "" {
return c.Render("index", fiber.Map{"error": "Erreur lors de la connexion.",})
} else {
return c.Render("spotify-token", fiber.Map{})
}
}
func index(c *fiber.Ctx) error {
sess, _ := Session.Get(c)
tmp := false
if sess.Get("token") != nil {
tmp = true
}
if Errors == "" {
//return c.Render("index", fiber.Map{"connected": !SpotifyAPI.CheckEmpty(),
return c.Render("index", fiber.Map{"connected": tmp,
"url": SpotifyURL})
} else {
e := Errors
Errors = ""
return c.Render("index", fiber.Map{"connected": tmp,
"error": e,
"url": SpotifyURL})
}
}
func main() {
//app := fiber.New(fiber.Config(Views: html, ViewsLayout: "layouts/main"))
app := fiber.New(fiber.Config{Views: html.New("./views", ".html"),})
app.Use(recover.New())
app.Static("/", "./static")
app.Get("/", index)
app.Post("/", mytoken)
app.Post("/feudecamp", getNew)
app.Post("/back", formHandler)
app.Get("/callback", spotifyCallback)
log.Fatal(app.Listen(":8080"))
}