go-mastodon/mastodon.go

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package mastodon
import (
"encoding/json"
"fmt"
"io"
"net/http"
"net/url"
"os"
"strings"
"time"
)
type Config struct {
Server string
ClientID string
ClientSecret string
AccessToken string
}
type client struct {
http.Client
config *Config
}
func NewClient(config *Config) *client {
return &client{
Client: *http.DefaultClient,
config: config,
}
}
func (c *client) Authenticate(username, password string) error {
params := url.Values{}
params.Set("client_id", c.config.ClientID)
params.Set("client_secret", c.config.ClientSecret)
params.Set("grant_type", "password")
params.Set("username", username)
params.Set("password", password)
req, err := http.NewRequest("POST", fmt.Sprintf("%s/%s", c.config.Server, "/oauth/token"), strings.NewReader(params.Encode()))
if err != nil {
return err
}
resp, err := c.Do(req)
if err != nil {
return err
}
defer resp.Body.Close()
res := struct {
AccessToken string `json:"access_token"`
}{}
err = json.NewDecoder(resp.Body).Decode(&res)
if err != nil {
return err
}
c.config.AccessToken = res.AccessToken
return nil
}
type Timeline struct {
ID int `json:"id"`
CreatedAt time.Time `json:"created_at"`
InReplyToID interface{} `json:"in_reply_to_id"`
InReplyToAccountID interface{} `json:"in_reply_to_account_id"`
Sensitive bool `json:"sensitive"`
SpoilerText string `json:"spoiler_text"`
Visibility string `json:"visibility"`
Application interface{} `json:"application"`
Account struct {
ID int `json:"id"`
Username string `json:"username"`
Acct string `json:"acct"`
DisplayName string `json:"display_name"`
Locked bool `json:"locked"`
CreatedAt time.Time `json:"created_at"`
FollowersCount int `json:"followers_count"`
FollowingCount int `json:"following_count"`
StatusesCount int `json:"statuses_count"`
Note string `json:"note"`
URL string `json:"url"`
Avatar string `json:"avatar"`
AvatarStatic string `json:"avatar_static"`
Header string `json:"header"`
HeaderStatic string `json:"header_static"`
} `json:"account"`
MediaAttachments []interface{} `json:"media_attachments"`
Mentions []interface{} `json:"mentions"`
Tags []interface{} `json:"tags"`
URI string `json:"uri"`
Content string `json:"content"`
URL string `json:"url"`
ReblogsCount int `json:"reblogs_count"`
FavouritesCount int `json:"favourites_count"`
Reblog interface{} `json:"reblog"`
Favourited interface{} `json:"favourited"`
Reblogged interface{} `json:"reblogged"`
}
func (c *client) GetTimeline(path string) ([]Timeline, error) {
req, err := http.NewRequest("GET", fmt.Sprintf("%s/%s", c.config.Server, "/api/v1/timelines/home"), nil)
if err != nil {
return nil, err
}
req.Header.Set("Authorization", "Bearer "+c.config.AccessToken)
resp, err := c.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
var timeline []Timeline
err = json.NewDecoder(io.TeeReader(resp.Body, os.Stdout)).Decode(&timeline)
if err != nil {
return nil, err
}
return timeline, nil
}
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// AppConfig is a setting for registering applications.
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type AppConfig struct {
http.Client
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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 the following items: "read", "write" and "follow".
Scopes string
// Optional.
Website string
}
// Application is mastodon application.
type Application struct {
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ID int `json:"id"`
RedirectURI string `json:"redirect_uri"`
ClientID string `json:"client_id"`
ClientSecret string `json:"client_secret"`
}
// RegisterApp returns the mastodon application.
func RegisterApp(appConfig *AppConfig) (*Application, error) {
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params := url.Values{}
params.Set("client_name", appConfig.ClientName)
params.Set("redirect_uris", appConfig.RedirectURIs)
params.Set("scopes", appConfig.Scopes)
params.Set("website", appConfig.Website)
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url, err := url.Parse(appConfig.Server)
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if err != nil {
return nil, err
}
url.Path = "/api/v1/apps"
req, err := http.NewRequest("POST", url.String(), strings.NewReader(params.Encode()))
if err != nil {
return nil, err
}
resp, err := appConfig.Do(req)
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if err != nil {
return nil, err
}
defer resp.Body.Close()
app := &Application{}
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err = json.NewDecoder(resp.Body).Decode(app)
if err != nil {
return nil, err
}
return app, nil
}