mirror of
https://git.keinpfusch.net/loweel/zorg
synced 2024-12-23 21:18:34 +01:00
167 lines
3.6 KiB
Go
167 lines
3.6 KiB
Go
package mastodon
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import (
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"bufio"
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"context"
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"encoding/json"
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"io"
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"net/http"
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"net/url"
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"path"
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"strings"
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)
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// UpdateEvent is struct for passing status event to app.
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type UpdateEvent struct {
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Status *Status `json:"status"`
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}
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func (e *UpdateEvent) event() {}
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// NotificationEvent is struct for passing notification event to app.
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type NotificationEvent struct {
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Notification *Notification `json:"notification"`
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}
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func (e *NotificationEvent) event() {}
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// DeleteEvent is struct for passing deletion event to app.
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type DeleteEvent struct{ ID ID }
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func (e *DeleteEvent) event() {}
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// ErrorEvent is struct for passing errors to app.
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type ErrorEvent struct{ err error }
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func (e *ErrorEvent) event() {}
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func (e *ErrorEvent) Error() string { return e.err.Error() }
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// Event is interface passing events to app.
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type Event interface {
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event()
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}
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func handleReader(q chan Event, r io.Reader) error {
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var name string
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s := bufio.NewScanner(r)
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for s.Scan() {
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line := s.Text()
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token := strings.SplitN(line, ":", 2)
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if len(token) != 2 {
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continue
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}
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switch strings.TrimSpace(token[0]) {
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case "event":
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name = strings.TrimSpace(token[1])
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case "data":
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var err error
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switch name {
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case "update":
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var status Status
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err = json.Unmarshal([]byte(token[1]), &status)
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if err == nil {
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q <- &UpdateEvent{&status}
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}
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case "notification":
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var notification Notification
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err = json.Unmarshal([]byte(token[1]), ¬ification)
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if err == nil {
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q <- &NotificationEvent{¬ification}
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}
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case "delete":
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q <- &DeleteEvent{ID: ID(strings.TrimSpace(token[1]))}
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}
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if err != nil {
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q <- &ErrorEvent{err}
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}
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}
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}
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return s.Err()
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}
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func (c *Client) streaming(ctx context.Context, p string, params url.Values) (chan Event, error) {
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u, err := url.Parse(c.config.Server)
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if err != nil {
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return nil, err
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}
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u.Path = path.Join(u.Path, "/api/v1/streaming", p)
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u.RawQuery = params.Encode()
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req, err := http.NewRequest(http.MethodGet, u.String(), nil)
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if err != nil {
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return nil, err
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}
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req = req.WithContext(ctx)
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req.Header.Set("Authorization", "Bearer "+c.config.AccessToken)
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q := make(chan Event)
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go func() {
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defer close(q)
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for {
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select {
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case <-ctx.Done():
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return
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default:
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}
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c.doStreaming(req, q)
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}
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}()
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return q, nil
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}
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func (c *Client) doStreaming(req *http.Request, q chan Event) {
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resp, err := c.Do(req)
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if err != nil {
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q <- &ErrorEvent{err}
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return
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}
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
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q <- &ErrorEvent{parseAPIError("bad request", resp)}
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return
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}
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err = handleReader(q, resp.Body)
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if err != nil {
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q <- &ErrorEvent{err}
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}
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}
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// StreamingUser return channel to read events on home.
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func (c *Client) StreamingUser(ctx context.Context) (chan Event, error) {
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return c.streaming(ctx, "user", nil)
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}
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// StreamingPublic return channel to read events on public.
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func (c *Client) StreamingPublic(ctx context.Context, isLocal bool) (chan Event, error) {
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p := "public"
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if isLocal {
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p = path.Join(p, "local")
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}
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return c.streaming(ctx, p, nil)
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}
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// StreamingHashtag return channel to read events on tagged timeline.
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func (c *Client) StreamingHashtag(ctx context.Context, tag string, isLocal bool) (chan Event, error) {
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params := url.Values{}
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params.Set("tag", tag)
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p := "hashtag"
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if isLocal {
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p = path.Join(p, "local")
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}
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return c.streaming(ctx, p, params)
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}
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// StreamingList return channel to read events on a list.
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func (c *Client) StreamingList(ctx context.Context, id ID) (chan Event, error) {
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params := url.Values{}
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params.Set("list", string(id))
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return c.streaming(ctx, "list", params)
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}
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