name: Detect Deps

on:
  push:
    branches:
      - master
    paths:
      - package.json
  workflow_dispatch:

permissions:
  contents: read

jobs:
  check:
    name: Check
    runs-on: ubuntu-latest
    
    steps:
      - name: Checkout
        uses: actions/checkout@v7
        with:
          fetch-depth: 0
          fetch-tags: true
          ref: ${{ github.ref }}
      
      - name: Detect
        run: |
          DEPS=("xxxDeps" "yyyDeps" "zzzDeps")
          TARGET_FILE="package.json"
          
          if git rev-parse HEAD~1 >/dev/null 2>&1; then
            OLD_COMMIT="HEAD~1"
          else
            OLD_COMMIT="HEAD"
          fi
          
          changed_list=()
          
          echo "🎯 Target file: $TARGET_FILE"
          echo "📊 Comparing with: $OLD_COMMIT"
          echo ""
          
          for dep in "${DEPS[@]}"; do
            echo "🔍 Checking dependency: $dep"
          
            old_content=$(git show "$OLD_COMMIT":"$TARGET_FILE" 2>/dev/null || echo '{}')
            old_version=$(echo "$old_content" | jq -r --arg dep "$dep" '.dependencies[$dep] // .devDependencies[$dep] // empty')
            new_version=$(jq -r --arg dep "$dep" '.dependencies[$dep] // .devDependencies[$dep] // empty' "$TARGET_FILE")
          
            [ -z "$old_version" ] && old_version="❌ not found"
            [ -z "$new_version" ] && new_version="❌ not found"
          
            echo "   • Old version: $old_version"
            echo "   • New version: $new_version"
          
            if [ "$old_version" != "$new_version" ]; then
              echo "   ✅ $dep version changed!"
              changed_list+=("$dep")
            else
              echo "   🔄 $dep version unchanged"
            fi
          
            echo ""
          done
          
          if [ ${#changed_list[@]} -eq 0 ]; then
            echo "🚫 No dependencies changed. Stopping workflow."
            exit 1  # failure
          fi
          
          echo "📋 Changed dependencies:"
          for dep in "${changed_list[@]}"; do
            echo "   • $dep"
          done
          echo ""
          
          echo "✅ Dependencies changed. Starting next workflow."
          exit 0  # success