SlackPrNotification.ts

import axios from 'axios';

const url: string = process.env.SLACK_WEBHOOK_URL;
const prNum: string = process.env.PULL_REQUEST_NUMBER;
const prTitle: string = process.env.PULL_REQUEST_TITLE;
const prUrl: string = process.env.PULL_REQUEST_URL;
const prBody: string = process.env.PULL_REQUEST_BODY || "No description provided.";
const authorName: string = process.env.PULL_REQUEST_AUTHOR_NAME;
const authorIconUrl: string = process.env.PULL_REQUEST_AUTHOR_ICON_URL;
const compareBranchOwner: string = process.env.PULL_REQUEST_COMPARE_BRANCH_OWNER;
const compareBranchName: string = process.env.PULL_REQUEST_COMPARE_BRANCH_NAME;
const baseBranchOwner: string = process.env.PULL_REQUEST_BASE_BRANCH_OWNER;
const baseBranchName: string = process.env.PULL_REQUEST_BASE_BRANCH_NAME;

const sendHereMention: string = process.env.IS_SEND_HERE_MENTION.toLowerCase() === "true" ? "<!here>" : "";
const sendUserIDMentions: string = process.env.SEND_USER_ID_MENTIONS ? process.env.SEND_USER_ID_MENTIONS.split(",").map(id => {
    return "<@" + id + ">"
}).join(" ") : ""
const sendGroupIDMentions: string = process.env.SEND_GROUP_ID_MENTIONS ? process.env.SEND_GROUP_ID_MENTIONS.split(",").map(id => {
    return "<!subteam^" + id + ">"
}).join(" ") : ""

const mentions = sendHereMention + sendUserIDMentions + sendGroupIDMentions + "\n"

const prFromFork: string = process.env.IS_PR_FROM_FORK;
const compareBranchText: string = prFromFork === "true" ? compareBranchOwner + ":" + compareBranchName : compareBranchName;
const baseBranchText: string = prFromFork === "true" ? baseBranchOwner + ":" + baseBranchName : baseBranchName;

const makePretty: boolean = process.env.MAKE_PRETTY.toLowerCase() === "true"; //Priority is pretty > compact > normal
const makeCompact: boolean = process.env.MAKE_COMPACT.toLowerCase() === "true";

if (makePretty) {
    const message: Object = {
        attachments: [
            {
                color: "#00ff00",
                blocks: [
                    {
                        type: "section",
                        block_id: "commit_title",
                        text: {
                            type: "mrkdwn",
                            text: "*<" + prUrl + "|" + prTitle + ">* #" + prNum + " from *" + compareBranchText + "* to *" + baseBranchText + "*." + mentions
                        }
                    },
                    {
                        type: "context",
                        block_id: "committer_meta",
                        elements: [
                            {
                                type: "image",
                                image_url: authorIconUrl,
                                alt_text: "images"
                            },
                            {
                                type: "mrkdwn",
                                text: authorName
                            }
                        ]
                    },
                    {
                        type: "actions",
                        elements: [
                            {
                                type: "button",
                                text: {
                                    type: "plain_text",
                                    text: "See Pull Request",
                                    emoji: true
                                },
                                value: prTitle,
                                url: prUrl,
                                action_id: "actionId-0",
                                style: "primary"
                            }
                        ]
                    }
                ]
            }
        ]
    }
    axios.post(url, message);
} else if (makeCompact) {
    const message: Object = {
        blocks: [
            {
                type: "section",
                block_id: "commit_title",
                text: {
                    type: "mrkdwn",
                    text: "*<" + prUrl + "|" + prTitle + ">* #" + prNum + " from *" + compareBranchText + "* to *" + baseBranchText + "*." + mentions
                }
            },
            {
                type: "context",
                block_id: "committer_meta",
                elements: [
                    {
                        type: "image",
                        image_url: authorIconUrl,
                        alt_text: "images"
                    },
                    {
                        type: "mrkdwn",
                        text: "*" + authorName + "*"
                    }
                ]
            }
        ]
    }
    axios.post(url, message);
} else {
    const message: Object = {
        blocks: [
            {
                type: "section",
                text: {
                    type: "mrkdwn",
                    text: mentions + "*<" + prUrl + "|" + prTitle + ">*",
                },
                accessory: {
                    type: "image",
                    image_url: authorIconUrl,
                    alt_text: "github icon",
                },
                fields: [
                    {
                        type: "mrkdwn",
                        text: "*Author*\n" + authorName,
                    },
                    {
                        type: "mrkdwn",
                        text: "*Base branch*\n" + baseBranchText,
                    },
                    {
                        type: "mrkdwn",
                        text: "*Pull request number*\n#" + prNum,
                    },
                    {
                        type: "mrkdwn",
                        text: "*Compare branch*\n" + compareBranchText,
                    },
                ],
            },
            {
                type: "section",
                text: {
                    type: "plain_text",
                    text: prBody,
                    emoji: true,
                },
            },
        ]
    };
    axios.post(url, message);
}