rust-release.yml

name: Rust Release

on:
  push:
    branches:
      - main

permissions:
  contents: write
  pull-requests: write
  id-token: write # Required for trusted publishing

env:
  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true

jobs:
  # Only run for Rust changes
  check-changes:
    runs-on: ubuntu-latest
    outputs:
      rust_changed: ${{ steps.changes.outputs.rust_changed }}
    steps:
      - uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - name: Check for Rust changes
        id: changes
        run: |
          # Use github.event.before to handle multi-commit pushes
          BEFORE="${{ github.event.before }}"
          # Handle initial push (before is all zeros)
          if [ "$BEFORE" = "0000000000000000000000000000000000000000" ]; then
            BEFORE="HEAD~1"
          fi
          if git diff --name-only "$BEFORE" "${{ github.sha }}" | grep -qE '^(crates/|Cargo\.(toml|lock))'; then
            echo "rust_changed=true" >> $GITHUB_OUTPUT
          else
            echo "rust_changed=false" >> $GITHUB_OUTPUT
          fi

  # Create/update release PR when Rust files change
  release-pr:
    name: Release PR
    needs: check-changes
    if: needs.check-changes.outputs.rust_changed == 'true'
    runs-on: ubuntu-latest
    concurrency:
      group: release-plz-${{ github.ref }}
      cancel-in-progress: false
    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - name: Setup Rust
        uses: dtolnay/rust-toolchain@stable

      - name: Run release-plz
        uses: release-plz/action@v0.5
        with:
          command: release-pr
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

  # Publish when version changes (release PR merged)
  release:
    name: Release
    needs: check-changes
    if: needs.check-changes.outputs.rust_changed == 'true'
    runs-on: ubuntu-latest
    environment: release
    outputs:
      published: ${{ steps.version-check.outputs.should_publish }}
    steps:
      - name: Checkout
        uses: actions/checkout@v6

      - name: Check if version changed
        id: version-check
        run: |
          # Get current version from Cargo.toml
          CURRENT_VERSION=$(cargo metadata --no-deps --format-version=1 | jq -r '.packages[] | select(.name == "outlit") | .version')
          echo "current_version=$CURRENT_VERSION" >> $GITHUB_OUTPUT

          # Check if this version exists on crates.io
          if cargo search outlit --limit 1 | grep -q "^outlit = \"$CURRENT_VERSION\""; then
            echo "Version $CURRENT_VERSION already published"
            echo "should_publish=false" >> $GITHUB_OUTPUT
          else
            echo "Version $CURRENT_VERSION not yet published"
            echo "should_publish=true" >> $GITHUB_OUTPUT
          fi

      - name: Setup Rust
        if: steps.version-check.outputs.should_publish == 'true'
        uses: dtolnay/rust-toolchain@stable

      - name: Run tests
        if: steps.version-check.outputs.should_publish == 'true'
        run: cargo test --all-features

      - name: Authenticate with crates.io
        if: steps.version-check.outputs.should_publish == 'true'
        uses: rust-lang/crates-io-auth-action@v1
        id: auth

      - name: Publish to crates.io
        if: steps.version-check.outputs.should_publish == 'true'
        run: cargo publish -p outlit
        env:
          CARGO_REGISTRY_TOKEN: ${{ steps.auth.outputs.token }}

      - name: Create git tag
        if: steps.version-check.outputs.should_publish == 'true'
        run: |
          VERSION="${{ steps.version-check.outputs.current_version }}"
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git tag -a "outlit-v$VERSION" -m "outlit v$VERSION"
          git push origin "outlit-v$VERSION"

      - name: Summary
        if: steps.version-check.outputs.should_publish == 'true'
        run: |
          VERSION="${{ steps.version-check.outputs.current_version }}"
          echo "## Rust Crate Published" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "**Package:** outlit" >> $GITHUB_STEP_SUMMARY
          echo "**Version:** $VERSION" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "**Install:**" >> $GITHUB_STEP_SUMMARY
          echo "\`\`\`bash" >> $GITHUB_STEP_SUMMARY
          echo "cargo add outlit" >> $GITHUB_STEP_SUMMARY
          echo "\`\`\`" >> $GITHUB_STEP_SUMMARY

  # Publish canary on every push to main (when Rust files change and no stable release)
  canary:
    name: Publish Canary
    needs: [check-changes, release]
    # Only run if Rust changed AND no stable release happened
    if: |
      needs.check-changes.outputs.rust_changed == 'true' &&
      needs.release.outputs.published == 'false'
    runs-on: ubuntu-latest
    environment: release
    steps:
      - name: Checkout
        uses: actions/checkout@v6

      - name: Setup Rust
        uses: dtolnay/rust-toolchain@stable

      - name: Run tests
        run: cargo test --all-features

      - name: Set canary version
        id: version
        run: |
          BASE_VERSION=$(cargo metadata --no-deps --format-version=1 | jq -r '.packages[] | select(.name == "outlit") | .version')
          TIMESTAMP=$(date +%Y%m%d%H%M)
          SHORT_SHA=$(git rev-parse --short HEAD)
          CANARY_VERSION="${BASE_VERSION}-canary.${TIMESTAMP}.${SHORT_SHA}"
          echo "canary_version=$CANARY_VERSION" >> $GITHUB_OUTPUT

          # Update workspace version in root Cargo.toml
          sed -i "s/^version = \"${BASE_VERSION}\"/version = \"${CANARY_VERSION}\"/" Cargo.toml
          echo "Updated version to: $(grep '^version' Cargo.toml)"

      - name: Authenticate with crates.io
        uses: rust-lang/crates-io-auth-action@v1
        id: auth

      - name: Publish canary to crates.io
        run: cargo publish -p outlit --allow-dirty
        env:
          CARGO_REGISTRY_TOKEN: ${{ steps.auth.outputs.token }}

      - name: Summary
        run: |
          echo "## Rust Canary Published" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "**Package:** outlit" >> $GITHUB_STEP_SUMMARY
          echo "**Version:** ${{ steps.version.outputs.canary_version }}" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "**Install:**" >> $GITHUB_STEP_SUMMARY
          echo "\`\`\`bash" >> $GITHUB_STEP_SUMMARY
          echo "cargo add outlit@${{ steps.version.outputs.canary_version }}" >> $GITHUB_STEP_SUMMARY
          echo "\`\`\`" >> $GITHUB_STEP_SUMMARY