command_leave.go

// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.

package app

import (
	goi18n "github.com/mattermost/go-i18n/i18n"
	"github.com/mattermost/mattermost-server/v5/model"
)

type LeaveProvider struct {
}

const (
	CMD_LEAVE = "leave"
)

func init() {
	RegisterCommandProvider(&LeaveProvider{})
}

func (me *LeaveProvider) GetTrigger() string {
	return CMD_LEAVE
}

func (me *LeaveProvider) GetCommand(a *App, T goi18n.TranslateFunc) *model.Command {
	return &model.Command{
		Trigger:          CMD_LEAVE,
		AutoComplete:     true,
		AutoCompleteDesc: T("api.command_leave.desc"),
		DisplayName:      T("api.command_leave.name"),
	}
}

func (me *LeaveProvider) DoCommand(a *App, args *model.CommandArgs, message string) *model.CommandResponse {
	var channel *model.Channel
	var noChannelErr *model.AppError
	if channel, noChannelErr = a.GetChannel(args.ChannelId); noChannelErr != nil {
		return &model.CommandResponse{Text: args.T("api.command_leave.fail.app_error"), ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL}
	}

	team, err := a.GetTeam(args.TeamId)
	if err != nil {
		return &model.CommandResponse{Text: args.T("api.command_leave.fail.app_error"), ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL}
	}

	err = a.LeaveChannel(args.ChannelId, args.UserId)
	if err != nil {
		if channel.Name == model.DEFAULT_CHANNEL {
			return &model.CommandResponse{Text: args.T("api.channel.leave.default.app_error", map[string]interface{}{"Channel": model.DEFAULT_CHANNEL}), ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL}
		}
		return &model.CommandResponse{Text: args.T("api.command_leave.fail.app_error"), ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL}
	}

	member, err := a.GetTeamMember(team.Id, args.UserId)
	if err != nil || member.DeleteAt != 0 {
		return &model.CommandResponse{GotoLocation: args.SiteURL + "/"}
	}

	user, err := a.GetUser(args.UserId)
	if err != nil {
		return &model.CommandResponse{Text: args.T("api.command_leave.fail.app_error"), ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL}
	}

	if user.IsGuest() {
		members, err := a.GetChannelMembersForUser(team.Id, args.UserId)
		if err != nil || len(*members) == 0 {
			return &model.CommandResponse{Text: args.T("api.command_leave.fail.app_error"), ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL}
		}
		channel, err := a.GetChannel((*members)[0].ChannelId)
		if err != nil {
			return &model.CommandResponse{Text: args.T("api.command_leave.fail.app_error"), ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL}
		}
		return &model.CommandResponse{GotoLocation: args.SiteURL + "/" + team.Name + "/channels/" + channel.Name}
	}

	return &model.CommandResponse{GotoLocation: args.SiteURL + "/" + team.Name + "/channels/" + model.DEFAULT_CHANNEL}
}