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- package mastodon
- import (
- "context"
- "encoding/json"
- "net/http"
- "net/url"
- "path"
- "strings"
- )
- // AppConfig is a setting for registering applications.
- type AppConfig struct {
- Server string
- ClientName string
- // Where the user should be redirected after authorization (for no redirect, use urn:ietf:wg:oauth:2.0:oob)
- RedirectURIs string
- // This can be a space-separated list of items listed on the /settings/applications/new page of any Mastodon
- // instance. "read", "write", and "follow" are top-level scopes that include all the permissions of the more
- // specific scopes like "read:favourites", "write:statuses", and "write:follows".
- Scopes string
- // Optional.
- Website string
- }
- // Application is mastodon application.
- type Application struct {
- ID string `json:"id"`
- RedirectURI string `json:"redirect_uri"`
- ClientID string `json:"client_id"`
- ClientSecret string `json:"client_secret"`
- // AuthURI is not part of the Mastodon API; it is generated by go-mastodon.
- AuthURI string `json:"auth_uri,omitempty"`
- }
- // RegisterApp returns the mastodon application.
- func RegisterApp(ctx context.Context, appConfig *AppConfig) (*Application, error) {
- params := url.Values{}
- params.Set("client_name", appConfig.ClientName)
- if appConfig.RedirectURIs == "" {
- params.Set("redirect_uris", "urn:ietf:wg:oauth:2.0:oob")
- } else {
- params.Set("redirect_uris", appConfig.RedirectURIs)
- }
- params.Set("scopes", appConfig.Scopes)
- u, err := url.Parse(appConfig.Server)
- if err != nil {
- return nil, err
- }
- u.Path = path.Join(u.Path, "/api/v1/apps")
- req, err := http.NewRequest(http.MethodPost, u.String(), strings.NewReader(params.Encode()))
- if err != nil {
- return nil, err
- }
- req = req.WithContext(ctx)
- req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
- resp, err := httpClient.Do(req)
- if err != nil {
- return nil, err
- }
- defer resp.Body.Close()
- if resp.StatusCode != http.StatusOK {
- return nil, parseAPIError("bad request", resp)
- }
-
- var app Application
- err = json.NewDecoder(resp.Body).Decode(&app)
- if err != nil {
- return nil, err
- }
- u, err = url.Parse(appConfig.Server)
- if err != nil {
- return nil, err
- }
- u.Path = path.Join(u.Path, "/oauth/authorize")
- u.RawQuery = url.Values{
- "scope": {appConfig.Scopes},
- "response_type": {"code"},
- "redirect_uri": {app.RedirectURI},
- "client_id": {app.ClientID},
- }.Encode()
- app.AuthURI = u.String()
- return &app, nil
- }
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