detect-deps.yml

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=("vitepress")
          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"

          for dep in "${DEPS[@]}"; do
            old_content=$(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")

            echo "Checking $dep..."
            echo "Old: $old_version"
            echo "New: $new_version"

            if [ "$old_version" != "$new_version" ]; then
              echo "➡ $dep version changed!"
              changed_list+=("$dep")
            fi
          done

          if [ ${#changed_list[@]} -eq 0 ]; then
            echo "No dependencies changed. Stopping workflow."
            exit 1  # failure
          fi
          
          echo "Changed dependencies: ${changed_list[*]}"
          
          echo "Dependencies changed. Starting next workflow."
          exit 0  # success