mirror of
https://github.com/42wim/matterbridge.git
synced 2024-12-22 11:12:44 +01:00
41b4e64be9
Signed-off-by: Gary Kim <gary@garykim.dev>
206 lines
5.5 KiB
Go
206 lines
5.5 KiB
Go
// Copyright (c) 2020 Gary Kim <gary@garykim.dev>, All Rights Reserved
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package room
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import (
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"context"
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"errors"
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"io/ioutil"
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"strconv"
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"time"
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"github.com/monaco-io/request"
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"gomod.garykim.dev/nc-talk/constants"
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"gomod.garykim.dev/nc-talk/ocs"
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"gomod.garykim.dev/nc-talk/user"
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)
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var (
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// ErrEmptyToken is returned when the room token is empty
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ErrEmptyToken = errors.New("given an empty token")
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// ErrRoomNotFound is returned when a room with the given token could not be found
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ErrRoomNotFound = errors.New("room could not be found")
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// ErrUnauthorized is returned when the room could not be accessed due to being unauthorized
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ErrUnauthorized = errors.New("unauthorized error when accessing room")
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// ErrNotModeratorInLobby is returned when the room is in lobby mode but the user is not a moderator
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ErrNotModeratorInLobby = errors.New("room is in lobby mode but user is not a moderator")
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// ErrUnexpectedReturnCode is returned when the server did not respond with an expected return code
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ErrUnexpectedReturnCode = errors.New("unexpected return code")
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// ErrTooManyRequests is returned if the server returns a 429
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ErrTooManyRequests = errors.New("too many requests")
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)
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// TalkRoom represents a room in Nextcloud Talk
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type TalkRoom struct {
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User *user.TalkUser
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Token string
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}
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// NewTalkRoom returns a new TalkRoom instance
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// Token should be the Nextcloud Room Token (e.g. "d6zoa2zs" if the room URL is https://cloud.mydomain.me/call/d6zoa2zs)
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func NewTalkRoom(tuser *user.TalkUser, token string) (*TalkRoom, error) {
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if token == "" {
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return nil, ErrEmptyToken
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}
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if tuser == nil {
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return nil, user.ErrUserIsNil
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}
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return &TalkRoom{
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User: tuser,
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Token: token,
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}, nil
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}
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// SendMessage sends a message in the Talk room
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func (t *TalkRoom) SendMessage(msg string) (*ocs.TalkRoomMessageData, error) {
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url := t.User.NextcloudURL + constants.BaseEndpoint + "chat/" + t.Token
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requestParams := map[string]string{
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"message": msg,
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}
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client := t.User.RequestClient(request.Client{
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URL: url,
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Method: "POST",
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Params: requestParams,
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})
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res, err := client.Do()
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if err != nil {
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return nil, err
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}
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if res.StatusCode() != 201 {
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return nil, ErrUnexpectedReturnCode
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}
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msgInfo, err := ocs.TalkRoomSentResponseUnmarshal(&res.Data)
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if err != nil {
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return nil, err
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}
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return &msgInfo.OCS.TalkRoomMessage, err
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}
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// ReceiveMessages starts watching for new messages
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func (t *TalkRoom) ReceiveMessages(ctx context.Context) (chan ocs.TalkRoomMessageData, error) {
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c := make(chan ocs.TalkRoomMessageData)
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err := t.TestConnection()
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if err != nil {
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return nil, err
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}
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url := t.User.NextcloudURL + constants.BaseEndpoint + "chat/" + t.Token
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requestParam := map[string]string{
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"lookIntoFuture": "1",
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"includeLastKnown": "0",
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}
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lastKnown := ""
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res, err := t.User.GetRooms()
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if err != nil {
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return nil, err
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}
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for _, r := range *res {
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if r.Token == t.Token {
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lastKnown = strconv.Itoa(r.LastReadMessage)
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break
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}
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}
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go func() {
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for {
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if ctx.Err() != nil {
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return
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}
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if lastKnown != "" {
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requestParam["lastKnownMessageId"] = lastKnown
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}
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client := t.User.RequestClient(request.Client{
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URL: url,
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Params: requestParam,
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Timeout: time.Second * 60,
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})
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res, err := client.Resp()
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if err != nil {
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continue
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}
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// If it seems that we no longer have access to the chat for one reason or another, stop the goroutine and set error in the next return.
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if res.StatusCode == 404 {
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_ = res.Body.Close()
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c <- ocs.TalkRoomMessageData{Error: ErrRoomNotFound}
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return
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}
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if res.StatusCode == 401 {
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_ = res.Body.Close()
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c <- ocs.TalkRoomMessageData{Error: ErrUnauthorized}
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return
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}
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if res.StatusCode == 429 {
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_ = res.Body.Close()
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c <- ocs.TalkRoomMessageData{Error: ErrTooManyRequests}
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return
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}
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if res.StatusCode == 200 {
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lastKnown = res.Header.Get("X-Chat-Last-Given")
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data, err := ioutil.ReadAll(res.Body)
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_ = res.Body.Close()
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if err != nil {
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continue
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}
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message, err := ocs.TalkRoomMessageDataUnmarshal(&data)
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if err != nil {
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continue
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}
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for _, msg := range message.OCS.TalkRoomMessage {
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c <- msg
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}
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continue
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}
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_ = res.Body.Close()
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}
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}()
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return c, nil
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}
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// TestConnection tests the connection with the Nextcloud Talk instance and returns an error if it could not connect
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func (t *TalkRoom) TestConnection() error {
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if t.Token == "" {
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return ErrEmptyToken
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}
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url := t.User.NextcloudURL + constants.BaseEndpoint + "chat/" + t.Token
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requestParam := map[string]string{
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"lookIntoFuture": "0",
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"includeLastKnown": "0",
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}
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client := t.User.RequestClient(request.Client{
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URL: url,
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Params: requestParam,
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Timeout: time.Second * 30,
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})
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res, err := client.Do()
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if err != nil {
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return err
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}
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switch res.StatusCode() {
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case 200:
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return nil
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case 304:
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return nil
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case 404:
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return ErrRoomNotFound
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case 412:
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return ErrNotModeratorInLobby
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}
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return ErrUnexpectedReturnCode
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}
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