/* Copyright © 2023 Philipp Wolfer Scotty is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. Scotty is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Scotty. If not, see . */ package deezer import ( "encoding/json" "io" "net/http" "time" "go.uploadedlobster.com/scotty/internal/auth" "golang.org/x/oauth2" ) type deezerStrategy struct { conf oauth2.Config } func (s deezerStrategy) Config() oauth2.Config { return s.conf } func (s deezerStrategy) AuthCodeURL(verifier string, state string) auth.AuthUrl { url := s.conf.AuthCodeURL(state, oauth2.AccessTypeOffline, oauth2.S256ChallengeOption(verifier)) return auth.AuthUrl{ Url: url, State: state, Param: "code", } } func (s deezerStrategy) ExchangeToken(code auth.CodeResponse, verifier string) (*oauth2.Token, error) { // Deezer has a non-standard token exchange, expecting all parameters in the URL's query req, err := http.NewRequest(http.MethodGet, s.conf.Endpoint.TokenURL, nil) if err != nil { return nil, err } q := req.URL.Query() q.Add("app_id", s.conf.ClientID) q.Add("secret", s.conf.ClientSecret) q.Add("code", code.Code) q.Add("output", "json") req.URL.RawQuery = q.Encode() res, err := http.DefaultClient.Do(req) if err != nil { return nil, err } reqBody, err := io.ReadAll(res.Body) if err != nil { return nil, err } token := deezerToken{} if err = json.Unmarshal(reqBody, &token); err != nil { return nil, err } return token.Token(), nil } type deezerToken struct { AccessToken string `json:"access_token"` ExpiresIn int64 `json:"expires"` } func (t deezerToken) Token() *oauth2.Token { token := &oauth2.Token{AccessToken: t.AccessToken} if t.ExpiresIn > 0 { token.Expiry = time.Now().Add(time.Duration(t.ExpiresIn * time.Second.Nanoseconds())) } return token }