snapshot of https://github.com/mattermost/mattermost.git (master, 2026-09-16; blobs > 131072B omitted)

server/channels/app/slashcommands/command_groupmsg.go

@@ -0,0 +1,159 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package slashcommands
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/mattermost/mattermost/server/public/model"
+	"github.com/mattermost/mattermost/server/public/shared/i18n"
+	"github.com/mattermost/mattermost/server/public/shared/request"
+	"github.com/mattermost/mattermost/server/v8/channels/app"
+)
+
+type groupmsgProvider struct {
+}
+
+const (
+	CmdGroupMsg = "groupmsg"
+)
+
+func init() {
+	app.RegisterCommandProvider(&groupmsgProvider{})
+}
+
+func (*groupmsgProvider) GetTrigger() string {
+	return CmdGroupMsg
+}
+
+func (*groupmsgProvider) GetCommand(a *app.App, T i18n.TranslateFunc) *model.Command {
+	return &model.Command{
+		Trigger:          CmdGroupMsg,
+		AutoComplete:     true,
+		AutoCompleteDesc: T("api.command_groupmsg.desc"),
+		AutoCompleteHint: T("api.command_groupmsg.hint"),
+		DisplayName:      T("api.command_groupmsg.name"),
+	}
+}
+
+func (*groupmsgProvider) DoCommand(a *app.App, rctx request.CTX, args *model.CommandArgs, message string) *model.CommandResponse {
+	targetUsers := map[string]*model.User{}
+	targetUsersSlice := []string{args.UserId}
+	invalidUsernames := []string{}
+
+	users, parsedMessage := groupMsgUsernames(message)
+
+	for _, username := range users {
+		username = strings.TrimSpace(username)
+		username = strings.TrimPrefix(username, "@")
+		targetUser, nErr := a.Srv().Store().User().GetByUsername(username)
+		if nErr != nil {
+			invalidUsernames = append(invalidUsernames, username)
+			continue
+		}
+
+		canSee, err := a.UserCanSeeOtherUser(rctx, args.UserId, targetUser.Id)
+		if err != nil {
+			return &model.CommandResponse{Text: args.T("api.command_groupmsg.fail.app_error"), ResponseType: model.CommandResponseTypeEphemeral}
+		}
+
+		if !canSee {
+			invalidUsernames = append(invalidUsernames, username)
+			continue
+		}
+
+		_, exists := targetUsers[targetUser.Id]
+		if !exists && targetUser.Id != args.UserId {
+			targetUsers[targetUser.Id] = targetUser
+			targetUsersSlice = append(targetUsersSlice, targetUser.Id)
+		}
+	}
+
+	if len(invalidUsernames) > 0 {
+		invalidUsersString := map[string]any{
+			"Users": "@" + strings.Join(invalidUsernames, ", @"),
+		}
+		return &model.CommandResponse{
+			Text:         args.T("api.command_groupmsg.invalid_user.app_error", len(invalidUsernames), invalidUsersString),
+			ResponseType: model.CommandResponseTypeEphemeral,
+		}
+	}
+
+	if len(targetUsersSlice) == 2 {
+		return app.GetCommandProvider("msg").DoCommand(a, rctx, args, fmt.Sprintf("%s %s", targetUsers[targetUsersSlice[1]].Username, parsedMessage))
+	}
+
+	if len(targetUsersSlice) < model.ChannelGroupMinUsers {
+		minUsers := map[string]any{
+			"MinUsers": model.ChannelGroupMinUsers - 1,
+		}
+		return &model.CommandResponse{
+			Text:         args.T("api.command_groupmsg.min_users.app_error", minUsers),
+			ResponseType: model.CommandResponseTypeEphemeral,
+		}
+	}
+
+	if len(targetUsersSlice) > model.ChannelGroupMaxUsers {
+		maxUsers := map[string]any{
+			"MaxUsers": model.ChannelGroupMaxUsers - 1,
+		}
+		return &model.CommandResponse{
+			Text:         args.T("api.command_groupmsg.max_users.app_error", maxUsers),
+			ResponseType: model.CommandResponseTypeEphemeral,
+		}
+	}
+
+	var groupChannel *model.Channel
+	var channelErr *model.AppError
+
+	if a.HasPermissionTo(rctx, args.UserId, model.PermissionCreateGroupChannel) {
+		groupChannel, channelErr = a.CreateGroupChannel(rctx, targetUsersSlice, args.UserId)
+		if channelErr != nil {
+			rctx.Logger().Error(channelErr.Error())
+			return &model.CommandResponse{Text: args.T("api.command_groupmsg.group_fail.app_error"), ResponseType: model.CommandResponseTypeEphemeral}
+		}
+	} else {
+		groupChannel, channelErr = a.GetGroupChannel(rctx, targetUsersSlice)
+		if channelErr != nil {
+			return &model.CommandResponse{Text: args.T("api.command_groupmsg.permission.app_error"), ResponseType: model.CommandResponseTypeEphemeral}
+		}
+	}
+
+	if parsedMessage != "" {
+		post := &model.Post{}
+		post.Message = parsedMessage
+		post.ChannelId = groupChannel.Id
+		post.UserId = args.UserId
+		if _, _, err := a.CreatePostMissingChannel(rctx, post, true, true); err != nil {
+			return &model.CommandResponse{Text: args.T("api.command_groupmsg.fail.app_error"), ResponseType: model.CommandResponseTypeEphemeral}
+		}
+	}
+
+	team, err := a.GetTeam(args.TeamId)
+	if err != nil {
+		return &model.CommandResponse{Text: args.T("api.command_groupmsg.fail.app_error"), ResponseType: model.CommandResponseTypeEphemeral}
+	}
+
+	return &model.CommandResponse{GotoLocation: args.SiteURL + "/" + team.Name + "/channels/" + groupChannel.Name, Text: "", ResponseType: model.CommandResponseTypeEphemeral}
+}
+
+func groupMsgUsernames(message string) ([]string, string) {
+	result := []string{}
+	resultMessage := ""
+	for idx, part := range strings.Split(message, ",") {
+		clean := strings.TrimPrefix(strings.TrimSpace(part), "@")
+		split := strings.Fields(clean)
+		if len(split) > 0 {
+			result = append(result, split[0])
+		}
+		if len(split) > 1 {
+			splitted := strings.SplitN(message, ",", idx+1)
+			resultMessage = strings.TrimPrefix(strings.TrimSpace(splitted[len(splitted)-1]), "@")
+			resultMessage = strings.TrimSpace(strings.TrimPrefix(resultMessage, split[0]))
+			break
+		}
+	}
+	return result, resultMessage
+}