# This is an action that runs when an Airbyte version bump is merged into master.
# It fetches the changelog from the version bump PR and automatically creates a
# Release for the version bump.

name: Create Airbyte GH Release

on:
  push:
    branches:
      - master

jobs:
  create-release:
    if: startsWith(github.event.head_commit.message, 'Bump Airbyte version')
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: read
    steps:
      - name: Fetch Version Bump PR Body
        id: fetch_pr_body
        env:
          COMMIT_ID: ${{ github.event.head_commit.id }}
        shell: bash
        run: |-
          set -x
          PR=$(curl \
          -H "Accept: application/vnd.github.v3+json" \
          -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" \
          https://api.github.com/repos/${{ github.repository }}/commits/$COMMIT_ID/pulls)
          # The printf helps escape characters so that jq can parse the output.
          # The sed removes carriage returns so that the body is easier to parse later, and
          #   escapes backticks so that they are not executed as commands.
          PR_BODY=$(printf '%s' "$PR" | jq '.[0].body' | sed 's/\\r//g' | sed 's/`/\\`/g')
          echo "pr_body<<EOF" >> $GITHUB_ENV
          echo "$PR_BODY" >> $GITHUB_ENV
          echo "EOF" >> $GITHUB_ENV
      - name: Extract Changelog
        id: extract_changelog
        shell: bash
        run: |-
          set -x
          PR_BODY=${{ env.pr_body}}
          if [[ $PR_BODY = "null" ]]; then
            echo "No PR body exists for this commit, so a release cannot be generated."
            exit 1
          fi
          # this regex extracts just the changelog contents
          if [[ $PR_BODY =~ Changelog:(\\n)*(.*)\\n\\n ]]; then
            CHANGELOG="${BASH_REMATCH[2]}"
          else
            echo "PR body does not match the changelog extraction regex"
            exit 1
          fi
          # save CHANGELOG into a multiline env var on the action itself, since Github Actions do not support outputting multiline strings well
          echo "CHANGELOG<<EOF" >> $GITHUB_ENV
          echo -e "$CHANGELOG" >> $GITHUB_ENV
          echo "EOF" >> $GITHUB_ENV
      - name: Checkout Airbyte
        uses: actions/checkout@v3
      - name: Get Version
        id: get_version
        shell: bash
        run: |
          VERSION=$(grep -w VERSION .env | cut -d"=" -f2)
          echo VERSION=${VERSION} >> $GITHUB_OUTPUT
      - name: Create Release
        id: create_release
        uses: ncipollo/release-action@v1
        with:
          body: ${{ env.CHANGELOG }}
          token: ${{ secrets.GITHUB_TOKEN }}
          tag: v${{ steps.get_version.outputs.VERSION }}