name: Changelog

on:
  push:
    branches:
      - main

jobs:
  release:
    name: Changelog
    runs-on: ubuntu-latest
    steps:
      - name: Check out code using Git
        uses: actions/checkout@v2
        with:
          fetch-depth: 0 # This makes Actions fetch all Git history so that Changesets can generate changelogs with the correct commits

      - name: Set Node version to 14
        uses: actions/setup-node@v2
        with:
          node-version: 14.x
          cache: 'yarn'

      - name: Install dependencies
        run: yarn --frozen-lockfile --ignore-engines
        env:
          CI: true

      - name: Create Release Pull Request or Publish to npm
        id: changesets
        uses: changesets/action@master
        with:
          # This expects you to have a script called release which does a build for your packages and calls changeset publish
          publish: yarn release
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}

      - name: Send a Discord notification if a publish happens
        if: steps.changesets.outputs.published == 'true'
        id: discord-notification
        env:
          DISCORD_WEBHOOK: ${{ secrets.DISCORD_WEBHOOK }}
        uses: Ilshidur/action-discord@0.3.2
        with:
          args: 'A new release just went out! [Release notes →](<https://github.com/snowpackjs/astro/releases/>)'

      - name: push main branch to latest branch
        if: steps.changesets.outputs.published == 'true'
        id: git-push-latest
        # Note: this will fail if "latest" and "main" have different commit history,
        # which is a good thing! Also, don't push if in pre-release mode.
        run: '(test -f .changeset/pre.json && echo "prerelease: skip pushing to latest branch.") || git push origin main:latest'