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author | Joey Lee <jayd005@gmail.com> | 2017-11-18 03:17:59 +1100 |
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committer | Harrison Healey <harrisonmhealey@gmail.com> | 2017-11-17 11:17:59 -0500 |
commit | 3836f9992056410e00041004132f5d53b4e43300 (patch) | |
tree | a75570472e9000c7cde74454af7fa186dcab2062 /app/slack.go | |
parent | 065d8e97313b9c8ffad37862665186668c88499f (diff) | |
download | chat-3836f9992056410e00041004132f5d53b4e43300.tar.gz chat-3836f9992056410e00041004132f5d53b4e43300.tar.bz2 chat-3836f9992056410e00041004132f5d53b4e43300.zip |
PLT-7824 Added support for mentions with <@userid> and <!here> (#7615) (#7737)
Diffstat (limited to 'app/slack.go')
-rw-r--r-- | app/slack.go | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/app/slack.go b/app/slack.go new file mode 100644 index 000000000..f05c27478 --- /dev/null +++ b/app/slack.go @@ -0,0 +1,76 @@ +// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved. +// See License.txt for license information. + +package app + +import ( + "regexp" + + "fmt" + "strings" + + "github.com/mattermost/mattermost-server/model" + "github.com/mattermost/mattermost-server/store" +) + +func (a *App) ProcessSlackText(text string) string { + text = expandAnnouncement(text) + text = replaceUserIds(a.Srv.Store.User(), text) + + return text +} + +// Expand announcements in incoming webhooks from Slack. Those announcements +// can be found in the text attribute, or in the pretext, text, title and value +// attributes of the attachment structure. The Slack attachment structure is +// documented here: https://api.slack.com/docs/attachments +func (app *App) ProcessSlackAttachments(a []*model.SlackAttachment) []*model.SlackAttachment { + var nonNilAttachments = model.StringifySlackFieldValue(a) + for _, attachment := range a { + attachment.Pretext = app.ProcessSlackText(attachment.Pretext) + attachment.Text = app.ProcessSlackText(attachment.Text) + attachment.Title = app.ProcessSlackText(attachment.Title) + + for _, field := range attachment.Fields { + if field.Value != nil { + // Ensure the value is set to a string if it is set + field.Value = app.ProcessSlackText(fmt.Sprintf("%v", field.Value)) + } + } + } + return nonNilAttachments +} + +// To mention @channel or @here via a webhook in Slack, the message should contain +// <!channel> or <!here>, as explained at the bottom of this article: +// https://get.slack.help/hc/en-us/articles/202009646-Making-announcements +func expandAnnouncement(text string) string { + a1 := [3]string{"<!channel>", "<!here>", "<!all>"} + a2 := [3]string{"@channel", "@here", "@all"} + + for i, a := range a1 { + text = strings.Replace(text, a, a2[i], -1) + } + return text +} + +// Replaces user IDs mentioned like this <@userID> to a normal username (eg. @bob) +// This is required so that Mattermost maintains Slack compatibility +// Refer to: https://api.slack.com/changelog/2017-09-the-one-about-usernames +func replaceUserIds(userStore store.UserStore, text string) string { + rgx, err := regexp.Compile("<@([a-zA-Z0-9]+)>") + if err == nil { + userIds := make([]string, 0) + matches := rgx.FindAllStringSubmatch(text, -1) + for _, match := range matches { + userIds = append(userIds, match[1]) + } + + if res := <-userStore.GetProfileByIds(userIds, true); res.Err == nil { + for _, user := range res.Data.([]*model.User) { + text = strings.Replace(text, "<@"+user.Id+">", "@"+user.Username, -1) + } + } + } + return text +} |