name: Syntax Check

on:
  push:
    branches:
      - "**"

jobs:
  syntax-check:
    runs-on: archlinux
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install linting tools
        run: |
          set -e
          pacman -Syu --noconfirm --needed shellcheck python-yamllint

      - name: Lint shell scripts with ShellCheck
        run: |
          echo "═══════════════════════════════════════════════════════════════"
          echo "  Running ShellCheck on all .sh files"
          echo "═══════════════════════════════════════════════════════════════"

          SH_FILES=$(find . -name '*.sh' -not -path './.git/*')
          if [ -z "$SH_FILES" ]; then
            echo "No shell scripts found."
            exit 0
          fi

          FAILED=0
          for f in $SH_FILES; do
            echo ""
            echo "── Checking: $f"
            if shellcheck -x -s bash "$f"; then
              echo "  ✅ $f passed"
            else
              echo "  ❌ $f failed"
              FAILED=1
            fi
          done

          if [ "$FAILED" -ne 0 ]; then
            echo ""
            echo "═══════════════════════════════════════════════════════════════"
            echo "  ❌ One or more shell scripts have syntax issues"
            echo "═══════════════════════════════════════════════════════════════"
            exit 1
          fi

          echo ""
          echo "═══════════════════════════════════════════════════════════════"
          echo "  ✅ All shell scripts passed ShellCheck"
          echo "═══════════════════════════════════════════════════════════════"

      - name: Lint YAML files with yamllint
        run: |
          echo "═══════════════════════════════════════════════════════════════"
          echo "  Running yamllint on all YAML files"
          echo "═══════════════════════════════════════════════════════════════"

          YAML_FILES=$(find . -name '*.yml' -o -name '*.yaml' | grep -v '.git/')
          if [ -z "$YAML_FILES" ]; then
            echo "No YAML files found."
            exit 0
          fi

          FAILED=0
          for f in $YAML_FILES; do
            echo ""
            echo "── Checking: $f"
            if yamllint -d relaxed "$f"; then
              echo "  ✅ $f passed"
            else
              echo "  ❌ $f failed"
              FAILED=1
            fi
          done

          if [ "$FAILED" -ne 0 ]; then
            echo ""
            echo "═══════════════════════════════════════════════════════════════"
            echo "  ❌ One or more YAML files have syntax issues"
            echo "═══════════════════════════════════════════════════════════════"
            exit 1
          fi

          echo ""
          echo "═══════════════════════════════════════════════════════════════"
          echo "  ✅ All YAML files passed yamllint"
          echo "═══════════════════════════════════════════════════════════════"

      - name: Validate packages.x86_64 syntax
        run: |
          echo "═══════════════════════════════════════════════════════════════"
          echo "  Validating packages.x86_64 format"
          echo "═══════════════════════════════════════════════════════════════"

          if [ ! -f packages.x86_64 ]; then
            echo "packages.x86_64 not found, skipping."
            exit 0
          fi

          FAILED=0
          LINENUM=0
          while IFS= read -r line; do
            LINENUM=$((LINENUM + 1))
            # Skip empty lines and comments
            [[ -z "$line" || "$line" =~ ^# ]] && continue

            # Check for invalid characters
            if [[ ! "$line" =~ ^[a-zA-Z0-9._@+\-]+$ ]]; then
              echo "❌ Line $LINENUM: invalid package name format: '$line'"
              FAILED=1
            fi

            # Check for trailing whitespace
            if [[ "$line" =~ [[:space:]]$ ]]; then
              echo "⚠️  Line $LINENUM: trailing whitespace: '$line'"
              FAILED=1
            fi
          done < packages.x86_64

          if [ "$FAILED" -ne 0 ]; then
            echo ""
            echo "═══════════════════════════════════════════════════════════════"
            echo "  ❌ packages.x86_64 has syntax issues"
            echo "═══════════════════════════════════════════════════════════════"
            exit 1
          fi

          echo ""
          echo "═══════════════════════════════════════════════════════════════"
          echo "  ✅ packages.x86_64 syntax is valid"
          echo "═══════════════════════════════════════════════════════════════"