.github/workflows/release-build.yml

name: Release Build (Nightly)

on:
  schedule:
    - cron: "47 9 * * *" # 1:47 AM Pacific Time (9:47 UTC)
  workflow_dispatch: # Allow manual triggering

permissions:
  contents: write

jobs:
  nightly:
    runs-on: ubuntu-latest
    if: github.ref == 'refs/heads/main'
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Set up Node.js
        uses: actions/setup-node@v4
        with:
          node-version: "20"
          cache: "npm"
          cache-dependency-path: "webui/package-lock.json"

      - uses: actions/setup-go@v5
        with:
          go-version-file: "${{ inputs.working-directory || '.'}}/go.mod"
          cache: true

      - name: Check for changes since last tag
        id: check_changes
        run: |
          git fetch --tags --force
          # find latest nightly tag that looks like nightly/v0.0.N
          latest_nightly=$(git tag -l "nightly/v0.0.*" --sort=-v:refname | head -n1)
          if [ -z "$latest_nightly" ]; then
            echo "has_changes=true" >> $GITHUB_OUTPUT
            echo "tag=v0.0.1" >> $GITHUB_OUTPUT
            echo "nightly_tag=nightly/v0.0.1" >> $GITHUB_OUTPUT
          else
            echo "Latest nightly tag is $latest_nightly"
            # Check if there are any new commits since the last nightly tag
            changes=$(git log $latest_nightly..HEAD --oneline)
            if [ -z "$changes" ]; then
              echo "No new changes since last nightly tag, skipping nightly build"
              echo "has_changes=false" >> $GITHUB_OUTPUT
            else
              echo "Changes found since last nightly tag:"
              echo "$changes"
              echo "has_changes=true" >> $GITHUB_OUTPUT
              # Extract N from nightly/v0.0.N and increment
              version_part="${latest_nightly#nightly/v0.0.}"
              new_n=$((version_part + 1))
              new_tag="v0.0.${new_n}"
              new_nightly_tag="nightly/v0.0.${new_n}"
              echo "tag=$new_tag" >> $GITHUB_OUTPUT
              echo "nightly_tag=$new_nightly_tag" >> $GITHUB_OUTPUT
            fi
          fi

      - name: Create and push nightly git tag
        if: steps.check_changes.outputs.has_changes == 'true'
        env:
          TAG: ${{ steps.check_changes.outputs.tag }}
          NIGHTLY_TAG: ${{ steps.check_changes.outputs.nightly_tag }}
        run: |
          git config user.name "Sketch Nightly Bot"
          git config user.email "hello@sketch.dev"
          git tag -a "$TAG" -m "Nightly build $TAG"
          git tag -a "$NIGHTLY_TAG" -m "Nightly build tracking tag for $TAG"
          git push origin "$TAG"
          git push origin "$NIGHTLY_TAG"

      - name: Run GoReleaser (Nightly)
        if: steps.check_changes.outputs.has_changes == 'true'
        uses: goreleaser/goreleaser-action@v4
        with:
          version: latest
          # because our builds aren't hermetic, we must build serially
          args: release --clean --parallelism 1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Mark release as prerelease
        if: steps.check_changes.outputs.has_changes == 'true'
        uses: actions/github-script@v6
        with:
          script: |
            const tag = process.env.TAG;
            const [owner, repo] = process.env.GITHUB_REPOSITORY.split('/');
            const release = await github.rest.repos.getReleaseByTag({ owner, repo, tag });
            await github.rest.repos.updateRelease({
              owner,
              repo,
              release_id: release.data.id,
              prerelease: true
            });
        env:
          TAG: ${{ steps.check_changes.outputs.tag }}