release-drafter.yml

name: Release Drafter

on:
  push:
    # branches to consider in the event; optional, defaults to all
    branches:
      - deploy/production

permissions:
  contents: read

jobs:
  update_release_draft:
    permissions:
      # write permission is required to create a github release
      contents: write
      # write permission is required for autolabeler
      # otherwise, read permission is required at least
      pull-requests: read
    runs-on: ubuntu-latest
    steps:

    - name: Get current date
      id: get-date
      run: |
          export CURRENT_DATE=$(TZ=":America/Los_Angeles" date "+%Y-%m-%d")
          echo "current_date=${CURRENT_DATE}" >> $GITHUB_OUTPUT
          echo "Current date set to ${CURRENT_DATE}"

    - name: Get number of releases for the current date
      id: get-release-count
      run: |
        export RELEASE_COUNT=$(gh release list \
          --repo ${{ github.repository }} \
          --json tagName \
          --exclude-drafts \
          --jq "map(select(.tagName | startswith(\"${CURRENT_DATE}\")))|length" \
          )
        echo "release_count=${RELEASE_COUNT}" >> $GITHUB_OUTPUT
        echo "Found ${RELEASE_COUNT} releases"
      env:
        CURRENT_DATE: ${{ steps.get-date.outputs.current_date }}
        GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

    - name: Prepare release version
      id: get-version
      run: |
          export VERSION="${CURRENT_DATE}"

          if [ $RELEASE_COUNT -gt 0 ]; then
            echo "Release already exists for version ${VERSION}"
            echo "Appending release count to version"
            export VERSION="${CURRENT_DATE}-${RELEASE_COUNT}"
          fi

          echo "version=${VERSION}" >> $GITHUB_OUTPUT
          echo "Version set to ${VERSION}"
      env:
        CURRENT_DATE: ${{ steps.get-date.outputs.current_date }}
        RELEASE_COUNT: ${{ steps.get-release-count.outputs.release_count }}


    - name: Check that version doesn't exist
      id: check-release
      run: |
        echo "Checking version ${VERSION}"

        export CHECK=$(gh release list \
          --repo ${{ github.repository }} \
          --json tagName \
          --exclude-drafts \
          --jq "map(select(.tagName == \"${VERSION}\"))|length" \
          )
        echo "Found ${CHECK} releases"

        if [ $CHECK -gt 0 ]; then
          echo "Release already exists for version ${VERSION}"
          exit 1
        fi
      env:
        VERSION: ${{ steps.get-version.outputs.version }}
        GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

    - name: Check that tag doesn't exist
      id: check-tag
      run: |
        echo "Checking tag for version ${VERSION}"

        # Query the API for this tag.
        export CHECK=$(gh api \
          -H "Accept: application/vnd.github+json" \
          -H "X-GitHub-Api-Version: 2022-11-28" \
          /repos/${{ github.repository }}/tags \
          --jq "map(select(.name  == \"${VERSION}\"))|length" \
        )
        echo "Found ${CHECK} tags"

        if [ $CHECK -gt 0 ]; then
          echo "Tag already exists for version ${VERSION}"
          exit 1
        fi
      env:
        VERSION: ${{ steps.get-version.outputs.version }}
        GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}


    - uses: release-drafter/release-drafter@v6
      with:
        commitish: deploy/production
        tag: ${{ steps.get-version.outputs.version }}
        name: ${{ steps.get-version.outputs.version }}
        version: ${{ steps.get-version.outputs.version }}
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}