slack_messages.go

package jitsi

import (
	"fmt"

	"github.com/slack-go/slack"
)

var (
	// All of this craziness is so I can use backticks in backtick string.
	helpText    = "`/jitsi` will provide a conference link in the channel.\n`/jitsi [@user1 @user2 ...]` will send direct messages to user1 and user2 to join a conference.\n`/jitsi server default` will set the server used for conferences to the default.\n`/jitsi server https://foo.com` will set the server used for conferences to https://foo.com. You can use your own jitsi server."
	helpMessage = fmt.Sprintf(`{
		"response_type":"ephemeral",
		"text":"How to use /jitsi...",
		"attachments":[{
			"text": "%s"
		}]
	}`, helpText)
)

const (
	roomTemplate = `{
		"response_type":"in_channel",
		"attachments":[{
			"fallback":"Meeting started on %s",
			"title":"Meeting started on %s",
			"color":"#3AA3E3",
			"attachment_type":"default",
			"actions":[{
				"name":"join",
				"text":"Join",
				"type":"button",
				"url":"%s",
				"style":"primary"
			}]
		}]
	}`
	userTemplate = `{
		"response_type":"ephemeral",
		"attachments":[{
			"fallback":"Invitations have been sent for your meeting on %s",
			"title":"Invitations have been sent for your meeting on %s",
			"color":"#3AA3E3",
			"attachment_type":"default",
			"actions":[{
				"name":"join",
				"text":"Join",
				"type":"button",
				"url":"%s",
				"style":"primary"
			}]
		}]
	}`
	installMessage = `{
		"response_type":"ephemeral",
		"text":"The Jitsi Meet app needs to be reinstalled to support updated Slack app APIs. Please ask your Slack admin to reinstall the app by going to 'manage apps', select Jitsi Meet, then 'Remove App' and immediately 'Add to Slack'.",
		"attachments":[{"text":"%s"}]
	}`
)

func sendPersonalizedInvite(token, hostID, userID string, meeting *Meeting) error {
	slackClient := slack.New(token)
	userInfo, err := slackClient.GetUserInfo(userID)
	if err != nil {
		return err
	}

	msg := fmt.Sprintf(
		"<@%s> would like you to join a meeting on %s",
		hostID,
		meeting.Host,
	)

	meetingURL, err := meeting.AuthenticatedURL(
		userInfo.ID,
		userInfo.Name,
		userInfo.Profile.Image192,
	)
	if err != nil {
		return err
	}

	attachment := slack.Attachment{
		Fallback: msg,
		Title:    msg,
		Color:    "#3AA3E3",
		Actions: []slack.AttachmentAction{
			{
				Name:  "join",
				Text:  "Join",
				Type:  "button",
				Style: "primary",
				URL:   meetingURL,
			},
		},
	}

	channel, _, _, err := slackClient.OpenConversation(
		&slack.OpenConversationParameters{
			Users: []string{userID},
		},
	)
	if err != nil {
		return err
	}

	_, _, err = slackClient.PostMessage(channel.ID, slack.MsgOptionAttachments(attachment))
	return err
}

func joinPersonalMeetingMsg(token, userID string, meeting *Meeting) (string, error) {
	slackClient := slack.New(token)
	userInfo, err := slackClient.GetUserInfo(userID)
	if err != nil {
		return "", err
	}

	meetingURL, err := meeting.AuthenticatedURL(
		userInfo.ID,
		userInfo.Name,
		userInfo.Profile.Image192,
	)
	if err != nil {
		return "", err
	}

	return fmt.Sprintf(userTemplate, meeting.Host, meeting.Host, meetingURL), nil
}