[PLT-6712/PLT-7182] /remove and /kick slash command: Remove a member from the channel (#7523)

1 files changed, 114 insertions, 0 deletions

diff --git a/app/command_remove.go b/app/command_remove.go
new file mode 100644
index 000000000..6047ff5be
--- /dev/null
+++ b/app/command_remove.go
@@ -0,0 +1,114 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package app
+
+import (
+	"strings"
+
+	l4g "github.com/alecthomas/log4go"
+	goi18n "github.com/nicksnyder/go-i18n/i18n"
+
+	"github.com/mattermost/mattermost-server/model"
+	"github.com/mattermost/mattermost-server/utils"
+)
+
+type RemoveProvider struct {
+}
+
+type KickProvider struct {
+}
+
+const (
+	CMD_REMOVE = "remove"
+	CMD_KICK   = "kick"
+)
+
+func init() {
+	RegisterCommandProvider(&RemoveProvider{})
+	RegisterCommandProvider(&KickProvider{})
+}
+
+func (me *RemoveProvider) GetTrigger() string {
+	return CMD_REMOVE
+}
+
+func (me *KickProvider) GetTrigger() string {
+	return CMD_KICK
+}
+
+func (me *RemoveProvider) GetCommand(T goi18n.TranslateFunc) *model.Command {
+	return &model.Command{
+		Trigger:          CMD_REMOVE,
+		AutoComplete:     true,
+		AutoCompleteDesc: T("api.command_remove.desc"),
+		AutoCompleteHint: T("api.command_remove.hint"),
+		DisplayName:      T("api.command_remove.name"),
+	}
+}
+
+func (me *KickProvider) GetCommand(T goi18n.TranslateFunc) *model.Command {
+	return &model.Command{
+		Trigger:          CMD_KICK,
+		AutoComplete:     true,
+		AutoCompleteDesc: T("api.command_remove.desc"),
+		AutoCompleteHint: T("api.command_remove.hint"),
+		DisplayName:      T("api.command_kick.name"),
+	}
+}
+
+func (me *RemoveProvider) DoCommand(a *App, args *model.CommandArgs, message string) *model.CommandResponse {
+	return doCommand(a, args, message)
+}
+
+func (me *KickProvider) DoCommand(a *App, args *model.CommandArgs, message string) *model.CommandResponse {
+	return doCommand(a, args, message)
+}
+
+func doCommand(a *App, args *model.CommandArgs, message string) *model.CommandResponse {
+	channel, err := a.GetChannel(args.ChannelId)
+	if err != nil {
+		return &model.CommandResponse{Text: args.T("api.command_channel_rename.channel.app_error"), ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL}
+	}
+
+	if channel.Type == model.CHANNEL_OPEN && !a.SessionHasPermissionToChannel(args.Session, args.ChannelId, model.PERMISSION_MANAGE_PUBLIC_CHANNEL_MEMBERS) {
+		return &model.CommandResponse{Text: args.T("api.command_remove.permission.app_error"), ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL}
+	}
+
+	if channel.Type == model.CHANNEL_PRIVATE && !a.SessionHasPermissionToChannel(args.Session, args.ChannelId, model.PERMISSION_MANAGE_PRIVATE_CHANNEL_MEMBERS) {
+		return &model.CommandResponse{Text: args.T("api.command_remove.permission.app_error"), ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL}
+	}
+
+	if channel.Type == model.CHANNEL_GROUP || channel.Type == model.CHANNEL_DIRECT {
+		return &model.CommandResponse{Text: args.T("api.command_remove.direct_group.app_error"), ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL}
+	}
+
+	if len(message) == 0 {
+		return &model.CommandResponse{Text: args.T("api.command_remove.message.app_error"), ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL}
+	}
+
+	targetUsername := ""
+
+	targetUsername = strings.SplitN(message, " ", 2)[0]
+	targetUsername = strings.TrimPrefix(targetUsername, "@")
+
+	var userProfile *model.User
+	if result := <-a.Srv.Store.User().GetByUsername(targetUsername); result.Err != nil {
+		l4g.Error(result.Err.Error())
+		return &model.CommandResponse{Text: args.T("api.command_remove.missing.app_error"), ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL}
+	} else {
+		userProfile = result.Data.(*model.User)
+	}
+
+	_, err = a.GetChannelMember(args.ChannelId, userProfile.Id)
+	if err != nil {
+		nameFormat := *utils.Cfg.TeamSettings.TeammateNameDisplay
+		return &model.CommandResponse{Text: args.T("api.command_remove.user_not_in_channel", map[string]interface{}{"Username": userProfile.GetDisplayName(nameFormat)}), ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL}
+	}
+
+	if err = a.RemoveUserFromChannel(userProfile.Id, args.UserId, channel); err != nil {
+		return &model.CommandResponse{Text: args.T(err.Id, map[string]interface{}{"Channel": model.DEFAULT_CHANNEL}), ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL}
+	}
+
+	return &model.CommandResponse{}
+}