update-prs.yml

name: Update Luau/Lute

on:
  schedule:
    - cron: "0 0 * * 6"
  workflow_dispatch:

permissions:
  contents: write
  pull-requests: write

jobs:
  update-luau:
    runs-on: ubuntu-latest
    outputs:
      pull-request-url: ${{ steps.create-pr.outputs.pull-request-url }}

    steps:
      - name: Checkout repository
        uses: actions/checkout@v6

      - name: Get latest Luau release
        id: latest-release
        run: |
          # Fetch the latest release tag from luau-lang/luau
          LATEST_TAG=$(curl -s https://api.github.com/repos/luau-lang/luau/releases/latest | jq -r '.tag_name')
          echo "Latest Luau release: $LATEST_TAG"
          echo "tag=$LATEST_TAG" >> $GITHUB_OUTPUT

          # Fetch the commit hash for this tag
          COMMIT_HASH=$(curl -s https://api.github.com/repos/luau-lang/luau/git/ref/tags/$LATEST_TAG | jq -r '.object.sha')
          echo "Commit hash: $COMMIT_HASH"
          echo "commit=$COMMIT_HASH" >> $GITHUB_OUTPUT

      - name: Check current version
        id: current-version
        run: |
          CURRENT_BRANCH=$(grep '^branch' extern/luau.tune | sed -E 's/^branch *= *"(.*)"/\1/')
          echo "Current Luau version: $CURRENT_BRANCH"
          echo "branch=$CURRENT_BRANCH" >> $GITHUB_OUTPUT

      - name: Update version files
        if: steps.current-version.outputs.branch != steps.latest-release.outputs.tag
        run: |
          # Update the branch and revision in luau.tune if needed
          if [ "${{ steps.current-version.outputs.branch }}" != "${{ steps.latest-release.outputs.tag }}" ]; then
            sed -i 's/^branch = ".*"/branch = "${{ steps.latest-release.outputs.tag }}"/' extern/luau.tune
            sed -i 's/^revision = ".*"/revision = "${{ steps.latest-release.outputs.commit }}"/' extern/luau.tune
            
            echo "Updated luau.tune:"
            cat extern/luau.tune
          fi

      - name: Create Pull Request
        id: create-pr
        if: steps.current-version.outputs.branch != steps.latest-release.outputs.tag
        uses: luau-lang/create-pull-request@v7.0.9
        with:
          commit-message: "chore: update dependencies"
          title: "Update Luau to ${{ steps.latest-release.outputs.tag }}"
          body: |
            ${{ format('**Luau**: Updated from `{0}` to `{1}`', steps.current-version.outputs.branch, steps.latest-release.outputs.tag) }}

            **Release Notes:**
            ${{ format('https://github.com/luau-lang/luau/releases/tag/{0}', steps.latest-release.outputs.tag) }}

            ---
            *This PR was automatically created by the [Update Luau workflow](https://github.com/${{ github.repository }}/actions/workflows/update-prs.yml)*
          branch: update-luau
          delete-branch: true
          base: primary

      - name: No update needed
        if: steps.current-version.outputs.branch == steps.latest-release.outputs.tag
        run: |
          echo "Luau is already up to date: ${{ steps.current-version.outputs.branch }}"

  update-lute:
    runs-on: ubuntu-latest
    needs: update-luau
    outputs:
      pull-request-url: ${{ steps.create-pr.outputs.pull-request-url }}

    steps:
      - name: Checkout repository
        uses: actions/checkout@v6

      - name: Get latest Lute release
        id: latest-release
        run: |
          # Fetch the latest release tag from luau-lang/lute
          LATEST_LUTE=$(
            curl -s https://api.github.com/repos/luau-lang/lute/releases \
            | jq -r 'map(select(.draft | not))[0]?.tag_name'
          )
          echo "Latest Lute release: $LATEST_LUTE"
          echo "tag=$LATEST_LUTE" >> $GITHUB_OUTPUT

          # rokit/foreman versions are SemVer and must not include a leading "v"
          LATEST_LUTE_VERSION="${LATEST_LUTE#v}"
          echo "Latest Lute version: $LATEST_LUTE_VERSION"
          echo "version=$LATEST_LUTE_VERSION" >> $GITHUB_OUTPUT

      - name: Check current version
        id: current-version
        run: |
          CURRENT_LUTE=$(grep '^lute = ' rokit.toml | sed -E 's/^lute = ".*@(.*)"/\1/')
          echo "Current Lute version: $CURRENT_LUTE"
          echo "lute=$CURRENT_LUTE" >> $GITHUB_OUTPUT

      - name: Update version files
        run: |
          # Update lute version in rokit.toml and foreman.toml
          if [ "${{ steps.current-version.outputs.lute }}" != "${{ steps.latest-release.outputs.version }}" ]; then
            sed -i 's/^lute = "luau-lang\/lute@.*"/lute = "luau-lang\/lute@${{ steps.latest-release.outputs.version }}"/' rokit.toml
            echo "Updated rokit.toml:"
            cat rokit.toml
            echo ""
            sed -i 's/^lute = { github = "luau-lang\/lute", version = ".*" }/lute = { github = "luau-lang\/lute", version = "=${{ steps.latest-release.outputs.version }}" }/' foreman.toml
            echo "Updated foreman.toml:"
            cat foreman.toml
          fi

      - name: Create Pull Request
        id: create-pr
        if: steps.current-version.outputs.lute != steps.latest-release.outputs.version
        uses: luau-lang/create-pull-request@v7.0.9
        with:
          commit-message: "chore: update dependencies"
          title: "Update Lute to ${{ steps.latest-release.outputs.tag }}"
          body: |
            ${{ format('**Lute**: Updated from `{0}` to `{1}`', steps.current-version.outputs.lute, steps.latest-release.outputs.version)}}

            **Release Notes:**
            ${{ format('https://github.com/luau-lang/lute/releases/tag/{0}', steps.latest-release.outputs.tag)}}

            ---
            *This PR was automatically created by the [Update Luau workflow](https://github.com/${{ github.repository }}/actions/workflows/update-prs.yml)*
          branch: update-lute
          delete-branch: true

      - name: No update needed
        if: steps.current-version.outputs.lute == steps.latest-release.outputs.version
        run: |
          echo "Lute is already up to date: ${{ steps.current-version.outputs.lute }}"

  notify:
    runs-on: ubuntu-latest
    needs: [update-luau, update-lute]
    if: always()
    env:
      SLACK_BOT_TOKEN: ${{ secrets.SLACK_BOT_TOKEN }}
    steps:
      - name: Send Slack notification
        run: |
          CHANNEL_ID="${{ secrets.SLACK_CHANNEL_ID }}"
          RUN_URL="${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}"

          if [[ "${{ needs.update-luau.result }}" == "success" && "${{ needs.update-lute.result }}" == "success" ]]; then
            TEXT=":meow_code: *Update Luau/Lute workflow succeeded*"

            LUAU_PR="${{ needs.update-luau.outputs.pull-request-url }}"
            LUTE_PR="${{ needs.update-lute.outputs.pull-request-url }}"

            if [[ -n "$LUAU_PR" ]]; then
              TEXT=$'$TEXT\n- Luau PR: <$LUAU_PR>'
            fi
            if [[ -n "$LUTE_PR" ]]; then
              TEXT=$'$TEXT\n- Lute PR: <$LUTE_PR>'
            fi

            TEXT=$'$TEXT\nafter newline'
          else
            TEXT=":meow_sad_rain: *Update Luau/Lute workflow failed* (<$RUN_URL|view workflow run>)"
          fi

          curl -sS -o /dev/null -X POST https://slack.com/api/chat.postMessage \
            -H "Authorization: Bearer $SLACK_BOT_TOKEN" \
            -H "Content-Type: application/json; charset=utf-8" \
            --data "$(jq -n --arg channel "$CHANNEL_ID" --arg text "$TEXT" '{channel: $channel, text: $text}')"