feat: add discord support (#33)

* feat: add discord support

* fix: correct discord message

* fix: correct discord message

* fix: correct discord message

action.yml

@@ -20,6 +20,9 @@ inputs:
     slack-webhook-url:
         required: false
         description: A webhook URL of a Slack channel that if provided, will notify the release
+    discord-webhook-url:
+        required: false
+        description: A webhook URL of a Discord text channel that if provided, will notify the release
     project-url:
         required: false
         description: A URL of the project that will be used in the slack notification

src/discord.ts

@@ -0,0 +1,65 @@
+import fetch from 'node-fetch'
+import * as core from '@actions/core'
+
+export const notifyDiscordChannel = async(webhookUrl: string, options: {
+    projectName: string
+    projectUrl: string
+    productionActionUrl: string
+    nextVersion: string
+    changelog: string
+    isReleaseCandidate: boolean
+}) => {
+    core.startGroup('Notifying Discord channel')
+    const version = options.nextVersion + (options.isReleaseCandidate ? '-rc' : '')
+    const payload = {
+        username: '',
+        avatar_url: '',
+        content: `The project **${options.projectName}** has just released the version **${version}**!\n${
+            options.changelog
+            // replace headings with bold text
+                .replace(/#+ ([^\n]+)/g, '**$1**')
+            // replace links with discord link syntax
+                .replace(/\[([^\]]+)\]\(([^\)]+)\)/g, '<$2|$1>')
+                .replace(/\- /g, '→')
+
+        }`,
+        embeds: [] as any[],
+        components: [] as any[],
+    }
+    payload.embeds.push({
+        title: 'See project',
+        url: options.projectUrl,
+    })
+    payload.embeds.push({
+        title: 'Deploy to production',
+        url: options.productionActionUrl,
+    })
+    payload.components.push({
+        type: '1',
+        components: [
+            {
+                type: 2,
+                style: 5,
+                label: 'See project',
+                url: options.projectUrl,
+            },
+            {
+                type: 2,
+                style: 5,
+                label: 'Deploy to production',
+                url: options.productionActionUrl,
+            },
+        ],
+    })
+
+    core.info(`Sending payload to Discord\n${JSON.stringify(payload, null, 4)}`)
+    const response = await fetch(webhookUrl, {
+        method: 'POST',
+        headers: {
+            'Content-Type': 'application/json',
+        },
+        body: JSON.stringify(payload),
+    })
+    core.endGroup()
+    return response
+}

src/main.ts

@@ -1,6 +1,7 @@
 import * as core from '@actions/core'
 import { context } from '@actions/github'
 import { generateChangelog } from './changelog'
+import { notifyDiscordChannel } from './discord'
 import { getLastCommitMessage, getLastGitTag, tagCommit } from './git'
 import { createGithubRelease } from './github'
 import { notifySlackChannel } from './slack'
@@ -9,6 +10,7 @@ import { getNextVersion, getPureVersion, getReleaseTypeFromCommitMessage } from
 async function run(): Promise<void> {
     const isReleaseCandidate = core.getInput('release-candidate') === 'true'
     const slackWebhookUrl = core.getInput('slack-webhook-url')
+    const discordWebhookUrl = core.getInput('discord-webhook-url')
 
     try {
         const currentVersion = await getLastGitTag({
@@ -47,6 +49,16 @@ async function run(): Promise<void> {
                     isReleaseCandidate,
                 })
             }
+            if (discordWebhookUrl !== '') {
+                await notifyDiscordChannel(discordWebhookUrl, {
+                    projectName: context.repo.repo,
+                    projectUrl: core.getInput('project-url'),
+                    productionActionUrl: core.getInput('production-action-url'),
+                    nextVersion,
+                    changelog,
+                    isReleaseCandidate,
+                })
+            }
 
             core.setOutput('next-version', nextVersion)
             core.setOutput('release-type', releaseType)