name: "KiBot PCB Generation with Multi-layer Support"

# Controls when the action will run. Triggers the workflow on push or pull request
# events but only for the master branch
on:
  push:
    paths:
      - 'kicad/c64psu/*.kicad_sch'
      - 'kicad/c64psu/*.kicad_pcb'
      - 'kicad/c64psu/*.kicad_pro'
      - '.gitea/workflows/kibot_quick_start.yml'
      - 'kibot.yaml'
  pull_request:
    paths:
      - 'kicad/c64psu/*.kicad_sch'
      - 'kicad/c64psu/*.kicad_pcb'
      - 'kicad/c64psu/*.kicad_pro'
      - '.gitea/workflows/kibot_quick_start.yml'
      - 'kibot.yaml'
  repository_dispatch:
    types: [run_qs]
  workflow_dispatch:
    inputs:
      board_layers:
        description: 'Number of PCB layers (auto-detect if not specified)'
        required: false
        default: 'auto'
        type: choice
        options:
          - auto
          - 2
          - 4
          - 6

# A workflow run is made up of one or more jobs that can run sequentially or in parallel
jobs:
  generate:
    runs-on: kicad-kibot-runner

    steps:
    - uses: actions/checkout@v3
      with:
        # So we can run a diff between last 2 changes
        fetch-depth: '0'

    - name: Detect layer count
      id: layers
      working-directory: kicad/c64psu
      run: |
        if [ "${{ github.event.inputs.board_layers }}" != "" ] && [ "${{ github.event.inputs.board_layers }}" != "auto" ]; then
          echo "layers=${{ github.event.inputs.board_layers }}" >> $GITHUB_OUTPUT
          echo "Using manually specified ${{ github.event.inputs.board_layers }} layer configuration"
        else
          # Auto-detect layers from PCB file
          LAYERS=$(python3 -c "
          import re
          import sys
          import glob
          
          try:
              pcb_files = glob.glob('*.kicad_pcb')
              if not pcb_files:
                  print(2)
                  sys.exit(0)
                  
              with open(pcb_files[0], 'r') as f:
                  content = f.read()
                  # Find all copper layers
                  copper_layers = re.findall(r'\(layer\s+\"([^\"]+)\".*?\(type\s+\"?copper\"?\)', content, re.DOTALL)
                  # Count inner layers (In1.Cu, In2.Cu, etc)
                  inner_layers = [l for l in copper_layers if 'In' in l and '.Cu' in l]
                  total = 2 + len(inner_layers)  # F.Cu + B.Cu + inner layers
                  print(total)
          except Exception as e:
              print(f'Error: {e}', file=sys.stderr)
              print(2)  # Default to 2 layers
          ")
          echo "layers=$LAYERS" >> $GITHUB_OUTPUT
          echo "Auto-detected $LAYERS layer board"
        fi

    - name: Check for KiBot config
      id: config_check
      run: |
        if [ -f "kibot.yaml" ]; then
          echo "found=true" >> $GITHUB_OUTPUT
          echo "Using custom kibot.yaml configuration"
        elif [ -f "kicad/c64psu/kibot.yaml" ]; then
          echo "found=true" >> $GITHUB_OUTPUT
          echo "config_path=kicad/c64psu/kibot.yaml" >> $GITHUB_OUTPUT
          echo "Using project-specific kibot.yaml configuration"
        else
          echo "found=false" >> $GITHUB_OUTPUT
          echo "Using --quick-start mode (no custom config found)"
        fi

    - name: Run ERC
      working-directory: kicad/c64psu
      run: |
        if [ "${{ steps.config_check.outputs.found }}" == "true" ]; then
          CONFIG_PATH="${{ steps.config_check.outputs.config_path }}"
          [ -z "$CONFIG_PATH" ] && CONFIG_PATH="../../kibot.yaml"
          [ -f *.kicad_sch ] && kibot -c "$CONFIG_PATH" -s run_erc -v || true
        fi
      continue-on-error: true

    - name: Run DRC
      working-directory: kicad/c64psu
      run: |
        if [ "${{ steps.config_check.outputs.found }}" == "true" ]; then
          CONFIG_PATH="${{ steps.config_check.outputs.config_path }}"
          [ -z "$CONFIG_PATH" ] && CONFIG_PATH="../../kibot.yaml"
          [ -f *.kicad_pcb ] && kibot -c "$CONFIG_PATH" -s run_drc -v || true
        fi
      continue-on-error: true

    - name: Generate outputs with custom config
      if: steps.config_check.outputs.found == 'true'
      working-directory: kicad/c64psu
      run: |
        echo "Generating outputs for ${{ steps.layers.outputs.layers }} layer board"
        CONFIG_PATH="${{ steps.config_check.outputs.config_path }}"
        [ -z "$CONFIG_PATH" ] && CONFIG_PATH="../../kibot.yaml"
        
        # Run KiBot with the configuration
        kibot -c "$CONFIG_PATH" -d Fabrication -v
        
        # Move outputs to match the original structure
        mkdir -p ../../Generated
        if [ -d "Fabrication" ]; then
          cp -r Fabrication/* ../../Generated/
        fi

    - name: Quick Start fallback
      if: steps.config_check.outputs.found == 'false'
      working-directory: kicad/c64psu
      run: |
        echo "Running KiBot in quick-start mode"
        kibot --quick-start
        
        # Move outputs to expected location
        if [ -d "Generated" ]; then
          mv Generated ../../
        fi

    - name: Add layer information to outputs
      run: |
        echo "Board configuration: ${{ steps.layers.outputs.layers }} layers" > Generated/board_info.txt
        echo "Project: ${{ steps.find_project.outputs.project_name }}" >> Generated/board_info.txt
        echo "Project path: ${{ steps.find_project.outputs.project_dir }}" >> Generated/board_info.txt
        echo "Generated on: $(date)" >> Generated/board_info.txt
        echo "Commit: ${{ github.sha }}" >> Generated/board_info.txt

    - name: Fix file permissions
      run: |
        chmod -R a+rw Generated || true

    - name: Retrieve results - All outputs
      uses: actions/upload-artifact@v3
      with:
        name: Automatic_outputs
        path: Generated

    - name: Retrieve results - Gerbers
      if: steps.config_check.outputs.found == 'true'
      uses: actions/upload-artifact@v3
      with:
        name: Gerbers-${{ steps.layers.outputs.layers }}layer
        path: Generated/Gerbers

    - name: Retrieve results - Assembly
      if: steps.config_check.outputs.found == 'true'
      uses: actions/upload-artifact@v3
      with:
        name: Assembly-${{ steps.layers.outputs.layers }}layer
        path: Generated/Assembly

    - name: Retrieve results - 3D Model
      if: steps.config_check.outputs.found == 'true'
      uses: actions/upload-artifact@v3
      with:
        name: 3D-Model
        path: Generated/3D

    - name: Retrieve results - Fabrication Package
      if: steps.config_check.outputs.found == 'true'
      uses: actions/upload-artifact@v3
      with:
        name: Fabrication-Package-${{ steps.layers.outputs.layers }}layer
        path: Generated/*.zip

  # This step is to upload the results to another repo (web pages)
  deploy:
    runs-on: kicad-kibot-runner
    needs: generate

    steps:
    - uses: actions/checkout@v4

    - name: Retrieve results
      uses: actions/download-artifact@v3
      with:
        name: Automatic_outputs
        path: Generated

    - name: Disable Jekyll
      # Jekyll will filter the KiRi folders
      run: |
        touch Generated/.nojekyll

    - name: Push to docu branch
      env:
        GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
      run: |
        # Set up git identity
        git config --global user.email "${{ gitea.actor }}@noreply.localhost"
        git config --global user.name "${{ gitea.actor }}"

        # Get the repository URL and add authentication
        REPO_URL=$(git config --get remote.origin.url)
        AUTHED_URL=${REPO_URL/https:\/\//https:\/\/${GITEA_TOKEN}@}

        # Clone the docu branch into a separate folder
        git clone --depth 1 --branch docu "$AUTHED_URL" docu-branch || \
          git clone --depth 1 "$AUTHED_URL" docu-branch

        cd docu-branch
        git checkout -B docu

        # Clean old contents and copy new files
        rm -rf ./*
        cp -r ../Generated/* ./

        # Commit and push if there are changes
        git add .
        if ! git diff --cached --quiet; then
          git commit -m "chore: update deployed documentation for ${{ needs.generate.outputs.layers }}-layer board"
          git push --force "$AUTHED_URL" docu
        else
          echo "No changes to deploy"
        fi