Add initial Microsoft Teams support #967
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| package bmsteams | ||
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| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
| "io/ioutil" | ||
| "strings" | ||
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| "github.com/42wim/matterbridge/bridge/config" | ||
| "github.com/42wim/matterbridge/bridge/helper" | ||
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| msgraph "github.com/yaegashi/msgraph.go/beta" | ||
| ) | ||
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| func (b *Bmsteams) findFile(weburl string) (string, error) { | ||
| itemRB, err := b.gc.GetDriveItemByURL(b.ctx, weburl) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| itemRB.Workbook().Worksheets() | ||
| b.gc.Workbooks() | ||
| item, err := itemRB.Request().Get(b.ctx) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| if url, ok := item.GetAdditionalData("@microsoft.graph.downloadUrl"); ok { | ||
| return url.(string), nil | ||
| } | ||
| return "", nil | ||
| } | ||
|
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| // handleDownloadFile handles file download | ||
| func (b *Bmsteams) handleDownloadFile(rmsg *config.Message, filename, weburl string) error { | ||
| realURL, err := b.findFile(weburl) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| // Actually download the file. | ||
| data, err := helper.DownloadFile(realURL) | ||
| if err != nil { | ||
| return fmt.Errorf("download %s failed %#v", weburl, err) | ||
| } | ||
|
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| // If a comment is attached to the file(s) it is in the 'Text' field of the teams messge event | ||
| // and should be added as comment to only one of the files. We reset the 'Text' field to ensure | ||
| // that the comment is not duplicated. | ||
| comment := rmsg.Text | ||
| rmsg.Text = "" | ||
| helper.HandleDownloadData(b.Log, rmsg, filename, comment, weburl, data, b.General) | ||
| return nil | ||
| } | ||
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| func (b *Bmsteams) handleAttachments(rmsg *config.Message, msg msgraph.ChatMessage) { | ||
| for _, a := range msg.Attachments { | ||
| //remove the attachment tags from the text | ||
| rmsg.Text = attachRE.ReplaceAllString(rmsg.Text, "") | ||
|
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| //handle a code snippet (code block) | ||
| if *a.ContentType == "application/vnd.microsoft.card.codesnippet" { | ||
| b.handleCodeSnippet(rmsg, a) | ||
| continue | ||
| } | ||
|
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| //handle the download | ||
| err := b.handleDownloadFile(rmsg, *a.Name, *a.ContentURL) | ||
| if err != nil { | ||
| b.Log.Errorf("download of %s failed: %s", *a.Name, err) | ||
| } | ||
| } | ||
| } | ||
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| type AttachContent struct { | ||
| Language string `json:"language"` | ||
| CodeSnippetURL string `json:"codeSnippetUrl"` | ||
| } | ||
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| func (b *Bmsteams) handleCodeSnippet(rmsg *config.Message, attach msgraph.ChatMessageAttachment) { | ||
| var content AttachContent | ||
| err := json.Unmarshal([]byte(*attach.Content), &content) | ||
| if err != nil { | ||
| b.Log.Errorf("unmarshal codesnippet failed: %s", err) | ||
| return | ||
| } | ||
| s := strings.Split(content.CodeSnippetURL, "/") | ||
| if len(s) != 13 { | ||
| b.Log.Errorf("codesnippetUrl has unexpected size: %s", content.CodeSnippetURL) | ||
| return | ||
| } | ||
| resp, err := b.gc.Teams().Request().Client().Get(content.CodeSnippetURL) | ||
| if err != nil { | ||
| b.Log.Errorf("retrieving snippet content failed:%s", err) | ||
| return | ||
| } | ||
| defer resp.Body.Close() | ||
| res, err := ioutil.ReadAll(resp.Body) | ||
| if err != nil { | ||
| b.Log.Errorf("reading snippet data failed: %s", err) | ||
| return | ||
| } | ||
| rmsg.Text = rmsg.Text + "\n```" + content.Language + "\n" + string(res) + "\n```\n" | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,205 @@ | ||
| package bmsteams | ||
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| import ( | ||
| "context" | ||
| "fmt" | ||
| "os" | ||
| "regexp" | ||
| "strings" | ||
| "time" | ||
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| "github.com/42wim/matterbridge/bridge" | ||
| "github.com/42wim/matterbridge/bridge/config" | ||
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| // "github.com/davecgh/go-spew/spew" | ||
| "github.com/mattn/godown" | ||
| msgraph "github.com/yaegashi/msgraph.go/beta" | ||
| "github.com/yaegashi/msgraph.go/msauth" | ||
|
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| "golang.org/x/oauth2" | ||
| ) | ||
|
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| var defaultScopes = []string{"openid", "profile", "offline_access", "Group.Read.All", "Group.ReadWrite.All"} | ||
| var attachRE = regexp.MustCompile(`<attachment id=.*?attachment>`) | ||
|
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| type Bmsteams struct { | ||
| gc *msgraph.GraphServiceRequestBuilder | ||
| ctx context.Context | ||
| botID string | ||
| *bridge.Config | ||
| } | ||
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| func New(cfg *bridge.Config) bridge.Bridger { | ||
| return &Bmsteams{Config: cfg} | ||
| } | ||
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| func (b *Bmsteams) Connect() error { | ||
| tokenCachePath := b.GetString("sessionFile") | ||
| if tokenCachePath == "" { | ||
| tokenCachePath = "msteams_session.json" | ||
| } | ||
| ctx := context.Background() | ||
| m := msauth.NewManager() | ||
| m.LoadFile(tokenCachePath) //nolint:errcheck | ||
| ts, err := m.DeviceAuthorizationGrant(ctx, b.GetString("TenantID"), b.GetString("ClientID"), defaultScopes, nil) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| err = m.SaveFile(tokenCachePath) | ||
| if err != nil { | ||
| b.Log.Errorf("Couldn't save sessionfile in %s: %s", tokenCachePath, err) | ||
| } | ||
| // make file readable only for matterbridge user | ||
| err = os.Chmod(tokenCachePath, 0600) | ||
| if err != nil { | ||
| b.Log.Errorf("Couldn't change permissions for %s: %s", tokenCachePath, err) | ||
| } | ||
| httpClient := oauth2.NewClient(ctx, ts) | ||
| graphClient := msgraph.NewClient(httpClient) | ||
| b.gc = graphClient | ||
| b.ctx = ctx | ||
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| err = b.setBotID() | ||
| if err != nil { | ||
| return err | ||
| } | ||
| b.Log.Info("Connection succeeded") | ||
| return nil | ||
| } | ||
|
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| func (b *Bmsteams) Disconnect() error { | ||
| return nil | ||
| } | ||
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| func (b *Bmsteams) JoinChannel(channel config.ChannelInfo) error { | ||
| go b.poll(channel.Name) | ||
| return nil | ||
| } | ||
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| func (b *Bmsteams) Send(msg config.Message) (string, error) { | ||
| b.Log.Debugf("=> Receiving %#v", msg) | ||
| if msg.ParentID != "" && msg.ParentID != "msg-parent-not-found" { | ||
| return b.sendReply(msg) | ||
| } | ||
| if msg.ParentID == "msg-parent-not-found" { | ||
| msg.ParentID = "" | ||
| msg.Text = fmt.Sprintf("[thread]: %s", msg.Text) | ||
| } | ||
| ct := b.gc.Teams().ID(b.GetString("TeamID")).Channels().ID(msg.Channel).Messages().Request() | ||
| text := msg.Username + msg.Text | ||
| content := &msgraph.ItemBody{Content: &text} | ||
| rmsg := &msgraph.ChatMessage{Body: content} | ||
| res, err := ct.Add(b.ctx, rmsg) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| return *res.ID, nil | ||
| } | ||
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| func (b *Bmsteams) sendReply(msg config.Message) (string, error) { | ||
| ct := b.gc.Teams().ID(b.GetString("TeamID")).Channels().ID(msg.Channel).Messages().ID(msg.ParentID).Replies().Request() | ||
| // Handle prefix hint for unthreaded messages. | ||
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| text := msg.Username + msg.Text | ||
| content := &msgraph.ItemBody{Content: &text} | ||
| rmsg := &msgraph.ChatMessage{Body: content} | ||
| res, err := ct.Add(b.ctx, rmsg) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| return *res.ID, nil | ||
| } | ||
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| func (b *Bmsteams) getMessages(channel string) ([]msgraph.ChatMessage, error) { | ||
| ct := b.gc.Teams().ID(b.GetString("TeamID")).Channels().ID(channel).Messages().Request() | ||
| rct, err := ct.Get(b.ctx) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| b.Log.Debugf("got %#v messages", len(rct)) | ||
| return rct, nil | ||
| } | ||
|
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| //nolint:gocognit | ||
| func (b *Bmsteams) poll(channelName string) { | ||
| msgmap := make(map[string]time.Time) | ||
| b.Log.Debug("getting initial messages") | ||
| res, err := b.getMessages(channelName) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| for _, msg := range res { | ||
| msgmap[*msg.ID] = *msg.CreatedDateTime | ||
| if msg.LastModifiedDateTime != nil { | ||
| msgmap[*msg.ID] = *msg.LastModifiedDateTime | ||
| } | ||
| } | ||
| time.Sleep(time.Second * 5) | ||
| b.Log.Debug("polling for messages") | ||
| for { | ||
| res, err := b.getMessages(channelName) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| for i := len(res) - 1; i >= 0; i-- { | ||
| msg := res[i] | ||
| if mtime, ok := msgmap[*msg.ID]; ok { | ||
| if mtime == *msg.CreatedDateTime && msg.LastModifiedDateTime == nil { | ||
| continue | ||
| } | ||
| if msg.LastModifiedDateTime != nil && mtime == *msg.LastModifiedDateTime { | ||
| continue | ||
| } | ||
| } | ||
| if *msg.From.User.ID == b.botID { | ||
| b.Log.Debug("skipping own message") | ||
| msgmap[*msg.ID] = *msg.CreatedDateTime | ||
| continue | ||
| } | ||
| msgmap[*msg.ID] = *msg.CreatedDateTime | ||
| if msg.LastModifiedDateTime != nil { | ||
| msgmap[*msg.ID] = *msg.LastModifiedDateTime | ||
| } | ||
| b.Log.Debugf("<= Sending message from %s on %s to gateway", *msg.From.User.DisplayName, b.Account) | ||
| text := b.convertToMD(*msg.Body.Content) | ||
| rmsg := config.Message{ | ||
| Username: *msg.From.User.DisplayName, | ||
| Text: text, | ||
| Channel: channelName, | ||
| Account: b.Account, | ||
| Avatar: "", | ||
| UserID: *msg.From.User.ID, | ||
| ID: *msg.ID, | ||
| Extra: make(map[string][]interface{}), | ||
| } | ||
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| b.handleAttachments(&rmsg, msg) | ||
| b.Log.Debugf("<= Message is %#v", rmsg) | ||
| b.Remote <- rmsg | ||
| } | ||
| time.Sleep(time.Second * 5) | ||
| } | ||
| } | ||
|
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| func (b *Bmsteams) setBotID() error { | ||
| req := b.gc.Me().Request() | ||
| r, err := req.Get(b.ctx) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| b.botID = *r.ID | ||
| return nil | ||
| } | ||
|
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| func (b *Bmsteams) convertToMD(text string) string { | ||
| if !strings.Contains(text, "<div>") { | ||
|
There was a problem hiding this comment. Does html-generated MSTeams formatting always have a |
||
| return text | ||
| } | ||
| var sb strings.Builder | ||
| err := godown.Convert(&sb, strings.NewReader(text), nil) | ||
| if err != nil { | ||
| b.Log.Errorf("Couldn't convert message to markdown %s", text) | ||
| return text | ||
| } | ||
| return sb.String() | ||
| } | ||
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Is there any cleanup to be done in the
Disconnectmethod?There was a problem hiding this comment.
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No, no clean-ups needed (no state)