/
client.go
195 lines (162 loc) · 4.26 KB
/
client.go
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package soundcloud
import (
"bytes"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"net/http"
"net/url"
"gopkg.in/validator.v2"
log "github.com/sirupsen/logrus"
)
const baseURL = "https://api.soundcloud.com"
// Auth is authentication data retrieved from the Soundcloud API
type Auth struct {
Token string `json:"access_token" validate:"nonzero"`
Scope string `json:"scope"`
}
// A Client is used to make requests to the Soundcloud API
type Client struct {
url string
username string
password string
id string
secret string
auth Auth
}
// NewClient creates a new client for the Soundcloud api
func NewClient(cfg Config) *Client {
c := &Client{
url: baseURL,
username: cfg.Username,
password: cfg.Password,
id: cfg.Client.ID,
secret: cfg.Client.Secret,
}
return c
}
// GetAuthToken requests an oauth2 token from the api's /oauth2/token endpoint
func (c *Client) GetAuthToken() error {
form := make(url.Values)
form.Set("grant_type", "password")
form.Set("client_id", c.id)
form.Set("client_secret", c.secret)
form.Set("username", c.username)
form.Set("password", c.password)
form.Set("scope", "*")
res, err := http.PostForm(fmt.Sprintf("%s/oauth2/token", c.url), form)
if err != nil {
return err
}
defer res.Body.Close()
resBody, err := ioutil.ReadAll(res.Body)
if err != nil {
return err
}
var auth Auth
if err := json.Unmarshal(resBody, &auth); err != nil {
return err
}
if err := validator.Validate(auth); err != nil {
return err
}
c.auth = auth
return nil
}
type wrappedPlaylist struct {
Playlist *Playlist `json:"playlist"`
}
func (c *Client) newRequest(method, endpoint, format string, body io.Reader) (*http.Request, error) {
query := make(url.Values)
query.Set("format", format)
query.Set("oauth_token", c.auth.Token)
query.Set("client_id", c.id)
return http.NewRequest(method,
fmt.Sprintf("%s%s?%s", c.url, endpoint, query.Encode()),
body)
}
func wrapPlaylist(playlist *Playlist) *wrappedPlaylist {
return &wrappedPlaylist{Playlist: playlist}
}
// UploadPlaylist takes the given playlist and tries to upload it using the client credentials
func (c *Client) UploadPlaylist(playlist *Playlist) (*Playlist, error) {
body, err := json.Marshal(wrapPlaylist(playlist))
if err != nil {
return nil, err
}
req, err := c.newRequest("POST", "/playlists", "json", bytes.NewReader(body))
if err != nil {
return nil, err
}
req.Header.Add("Content-Length", string(len(body)))
req.Header.Add("Content-Type", "application/json")
req.Header.Add("Accept", "application/json")
res, err := http.DefaultClient.Do(req)
if err != nil {
return nil, err
}
defer res.Body.Close()
resBody, err := ioutil.ReadAll(res.Body)
if err != nil {
return nil, err
}
if res.StatusCode != http.StatusCreated {
log.WithFields(log.Fields{
"status": res.Status,
"body": string(resBody),
}).Error("Request failed")
return nil, fmt.Errorf("Failed to do request, got: %s", res.Status)
}
var rp Playlist
err = json.Unmarshal(resBody, &rp)
if err != nil {
return nil, err
}
return &rp, nil
}
type artworkRequest struct {
Playlist struct {
ID int `json:"id"`
ArtworkData []byte `json:"artwork_data"`
} `json:"playlist"`
}
// UploadArtwork uploads the given artwork to the specified playlist
func (c *Client) UploadArtwork(playlistID int, artwork []byte) error {
var areq artworkRequest
areq.Playlist.ID = playlistID
areq.Playlist.ArtworkData = artwork
body, err := json.Marshal(&areq)
if err != nil {
return err
}
req, err := c.newRequest("PUT", "/playlists", "json", bytes.NewReader(body))
if err != nil {
return err
}
req.Header.Add("Content-Length", string(len(body)))
req.Header.Add("Content-Type", "application/json")
req.Header.Add("Accept", "application/json")
res, err := http.DefaultClient.Do(req)
if err != nil {
return err
}
if !(res.StatusCode >= 200 && res.StatusCode < 300) {
log.WithFields(log.Fields{
"status": res.Status,
// "body": string(rgesBody),
}).Error("Failed to upload artwork")
return fmt.Errorf("Failed to do request, got: %s", res.Status)
}
// resBody, err := ioutil.ReadAll(res.Body)
// if err != nil {
// return err
// }
//
// var rp Playlist
// err = json.Unmarshal(resBody, &rp)
// if err != nil {
// return err
// }
return nil
}