133 lines
2.3 KiB
Go
133 lines
2.3 KiB
Go
package lemmy
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import (
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"context"
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"encoding/json"
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"net/http"
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"net/url"
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"reflect"
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"time"
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"github.com/recws-org/recws"
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"go.arsenm.dev/go-lemmy/types"
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)
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type authData struct {
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Auth string `json:"auth"`
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}
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type WSClient struct {
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conn *recws.RecConn
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baseURL *url.URL
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respCh chan types.LemmyWebSocketMsg
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errCh chan error
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token string
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}
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func NewWebSocket(baseURL string) (*WSClient, error) {
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ws := &recws.RecConn{
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KeepAliveTimeout: 10 * time.Second,
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}
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u, err := url.Parse(baseURL)
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if err != nil {
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return nil, err
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}
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u = u.JoinPath("/api/v3")
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ws.Dial(u.JoinPath("ws").String(), nil)
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out := &WSClient{
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conn: ws,
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baseURL: u,
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respCh: make(chan types.LemmyWebSocketMsg, 10),
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errCh: make(chan error, 10),
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}
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go func() {
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for {
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var msg types.LemmyWebSocketMsg
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err = ws.ReadJSON(&msg)
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if err != nil {
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out.errCh <- err
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continue
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}
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out.respCh <- msg
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}
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}()
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return out, nil
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}
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func (c *WSClient) Login(ctx context.Context, l types.Login) error {
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u := &url.URL{}
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*u = *c.baseURL
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if u.Scheme == "ws" {
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u.Scheme = "http"
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} else if u.Scheme == "wss" {
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u.Scheme = "https"
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}
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hc := &Client{baseURL: u, client: http.DefaultClient}
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err := hc.Login(ctx, l)
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if err != nil {
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return err
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}
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c.token = hc.token
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return nil
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}
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func (c *WSClient) Request(op types.UserOperation, data any) error {
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if data == nil {
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data = authData{}
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}
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data = c.setAuth(data)
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d, err := json.Marshal(data)
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if err != nil {
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return err
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}
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return c.conn.WriteJSON(types.LemmyWebSocketMsg{
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Op: op,
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Data: d,
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})
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}
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func (c *WSClient) Responses() <-chan types.LemmyWebSocketMsg {
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return c.respCh
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}
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func (c *WSClient) Errors() <-chan error {
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return c.errCh
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}
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func (c *WSClient) setAuth(data any) any {
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val := reflect.New(reflect.TypeOf(data))
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val.Elem().Set(reflect.ValueOf(data))
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authField := val.Elem().FieldByName("Auth")
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if !authField.IsValid() {
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return data
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}
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switch authField.Type().String() {
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case "string":
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authField.SetString(c.token)
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case "types.Optional[string]":
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setMtd := authField.MethodByName("Set")
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out := setMtd.Call([]reflect.Value{reflect.ValueOf(c.token)})
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authField.Set(out[0])
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default:
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return data
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}
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return val.Elem().Interface()
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}
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func DecodeResponse(data json.RawMessage, out any) error {
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return json.Unmarshal(data, out)
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}
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