name: Archive Example Projects

  on:
    push:
      branches:
        - master
      paths:
        - 'examples/android-example/**'
        - 'examples/kotlin-dataframe-plugin-gradle-example/**'
        - 'examples/kotlin-dataframe-plugin-maven-example/**'
    workflow_dispatch:

  jobs:
    build-archives:
      runs-on: ubuntu-latest

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

        - name: Create archives in temp directory
          run: |
            mkdir -p /tmp/archives

            cd examples/android-example
            zip -r /tmp/archives/android-example.zip . -x "*.git*" "build/*" ".gradle/*" "*/build/*"

            cd ../kotlin-dataframe-plugin-gradle-example
            zip -r /tmp/archives/kotlin-dataframe-plugin-gradle-example.zip . -x "*.git*" "build/*" ".gradle/*" "*/build/*" ".idea/*"

            cd ../kotlin-dataframe-plugin-maven-example
            zip -r /tmp/archives/kotlin-dataframe-plugin-maven-example.zip . -x "*.git*" "target/*" ".idea/*"

        - name: Checkout example-projects-archives branch
          run: |
            git config user.name "github-actions[bot]"
            git config user.email "github-actions[bot]@users.noreply.github.com"
            
            if git ls-remote --exit-code --heads origin example-projects-archives; then
              git fetch origin example-projects-archives
              git checkout example-projects-archives
            else
              git checkout --orphan example-projects-archives
              git rm -rf .
            fi

        - name: Update archives
          run: |
            git rm -f *.zip 2>/dev/null || true
            
            cp /tmp/archives/*.zip .
            
            CURRENT_DATE=$(date -u '+%Y-%m-%d %H:%M UTC')
            
            cat > README.md << EOF
            # Kotlin DataFrame - Example Projects Archives
            
            Automatically generated archives of example projects.
            
            ## Available archives:
            
            ### Android Example
            Example of using Kotlin DataFrame in an Android application.
            
            **Download:** [android-example.zip](https://github.com/Kotlin/dataframe/raw/example-projects-archives/android-example.zip)
            
            ### Kotlin DataFrame Plugin Gradle Example
            Example of using the compiler plugin for Kotlin DataFrame in Gradle project.
            
            **Download:** [kotlin-dataframe-plugin-gradle-example.zip](https://github.com/Kotlin/dataframe/raw/example-projects-archives/kotlin-dataframe-plugin-gradle-example.zip)
            
            ### Kotlin DataFrame Plugin Maven Example
            Example of using the compiler plugin for Kotlin DataFrame in Gradle project.
            
            **Download:** [kotlin-dataframe-plugin-maven-example.zip](https://github.com/Kotlin/dataframe/raw/example-projects-archives/kotlin-dataframe-plugin-maven-example.zip)
            
            ---
            
            Last updated: $CURRENT_DATE
            
            Source commit: ${{ github.sha }}
            EOF
            
            git add .
            git commit -m "Update example archives from ${{ github.sha }}" || echo "No changes to commit"

        - name: Push to example-projects-archives branch
          run: |
            git push -f origin example-projects-archives
          env:
            GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}