name: Create GitHub Release on Version Change

on:
  push:
    branches: master

jobs:
  check-version:
    runs-on: ubuntu-latest
    outputs:
      new_version: ${{ steps.detect.outputs.new_version }}
      should_release: ${{ steps.detect.outputs.should_release }}
      previous_version: ${{ steps.detect.outputs.previous_version }}
    
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0 # Fetch all history to check tags

      - name: Read current VERSION
        id: read_current
        run: |
          if [ ! -f VERSION ]; then
            echo "Error: VERSION file missing"
            exit 1
          fi
          CURRENT=$(cat VERSION | tr -d '[:space:]')
          echo "current=$CURRENT" >> $GITHUB_OUTPUT
          echo "Current version in file: $CURRENT"

      - name: Find latest release tag
        id: latest_tag
        run: |
          # Get the most recent tag that looks like a version (vX.Y.Z)
          LATEST_TAG=$(git describe --tags --abbrev=0 2>/dev/null || echo "")
          
          if [ -z "$LATEST_TAG" ]; then
            echo "No previous tags found. This is the first release."
            echo "previous=" >> $GITHUB_OUTPUT
            echo "should_release=true" >> $GITHUB_OUTPUT
            echo "new_version=${{ steps.read_current.outputs.current }}" >> $GITHUB_OUTPUT
          else
            # Strip the 'v' prefix if present for comparison
            PREV_VERSION=${LATEST_TAG#v}
            echo "previous=$PREV_VERSION" >> $GITHUB_OUTPUT
            
            CURRENT=${{ steps.read_current.outputs.current }}
            
            if [ "$CURRENT" == "$PREV_VERSION" ]; then
              echo "Version unchanged ($CURRENT). Skipping release."
              echo "should_release=false" >> $GITHUB_OUTPUT
              echo "new_version=$CURRENT" >> $GITHUB_OUTPUT
            else
              echo "Version changed! $PREV_VERSION -> $CURRENT"
              echo "should_release=true" >> $GITHUB_OUTPUT
              echo "new_version=$CURRENT" >> $GITHUB_OUTPUT
            fi
          fi

  create-release:
    needs: check-version
    if: needs.check-version.outputs.should_release == 'true'
    runs-on: ubuntu-latest
    permissions:
      contents: write # Required to create releases and tags

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Prepare Release Artifacts
        run: |
          # Create a directory for the release
          mkdir -p release-artifacts
          
          # Copy relevant files to the artifact folder
          # Adjust these paths based on what you want to release
          cp -r . release-artifacts/
          
          # Remove hidden files and .git folder to keep it clean
          rm -rf release-artifacts/.git
          rm -rf release-artifacts/.github
          rm -rf release-artifacts/.gitignore
          
          # Create a tarball
          tar -czvf "SPT-Server-v${{ needs.check-version.outputs.new_version }}.tar.gz" -C release-artifacts .
          
          # Create a zip file
          zip -r "SPT-Server-v${{ needs.check-version.outputs.new_version }}.zip" release-artifacts/

      - name: Create GitHub Release
        uses: softprops/action-gh-release@v1
        with:
          tag_name: v${{ needs.check-version.outputs.new_version }}
          name: Release v${{ needs.check-version.outputs.new_version }}
          body: |
            ## 🚀 New Release: v${{ needs.check-version.outputs.new_version }}
            
            Automated release triggered by an update to the `VERSION` file.
            
            ### 📦 Download
            - [Download .tar.gz](#) (Link generated automatically)
            - [Download .zip](#) (Link generated automatically)
            
            ### 📝 Changes
            - Updated version to ${{ needs.check-version.outputs.new_version }}
            - (Add manual notes here if needed)
          files: |
            SPT-Server-v${{ needs.check-version.outputs.new_version }}.tar.gz
            SPT-Server-v${{ needs.check-version.outputs.new_version }}.zip
          generate_release_notes: true
          draft: false
          prerelease: false