name: Auto Release on Version Bump

on:
  push:
    branches: [main]
    paths:
      - 'pubspec.yaml'

jobs:
  check-version:
    runs-on: ubuntu-latest
    outputs:
      version_changed: ${{ steps.check.outputs.changed }}
      new_version: ${{ steps.check.outputs.version }}
    
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 2

      - name: Check if version changed
        id: check
        run: |
          # Get current version
          CURRENT_VERSION=$(grep '^version:' pubspec.yaml | sed 's/version: //' | cut -d'+' -f1)
          
          # Get previous version
          git show HEAD~1:pubspec.yaml > /tmp/old_pubspec.yaml 2>/dev/null || echo "version: 0.0.0" > /tmp/old_pubspec.yaml
          PREVIOUS_VERSION=$(grep '^version:' /tmp/old_pubspec.yaml | sed 's/version: //' | cut -d'+' -f1)
          
          echo "Current version: $CURRENT_VERSION"
          echo "Previous version: $PREVIOUS_VERSION"
          
          if [ "$CURRENT_VERSION" != "$PREVIOUS_VERSION" ]; then
            echo "Version changed!"
            echo "changed=true" >> $GITHUB_OUTPUT
            echo "version=v$CURRENT_VERSION" >> $GITHUB_OUTPUT
          else
            echo "Version unchanged"
            echo "changed=false" >> $GITHUB_OUTPUT
          fi

  create-tag-and-trigger-release:
    needs: check-version
    if: needs.check-version.outputs.version_changed == 'true'
    runs-on: ubuntu-latest
    permissions:
      contents: write
      actions: write
    
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Create and push tag
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git tag ${{ needs.check-version.outputs.new_version }}
          git push origin ${{ needs.check-version.outputs.new_version }}
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Trigger Release workflow
        run: |
          gh workflow run release.yml -f version=${{ needs.check-version.outputs.new_version }}
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}