name: Check Properties Files in PR

on:
  pull_request_target:
    types: [opened, synchronize, reopened]
    paths:
      - "src/main/resources/messages_*.properties"

jobs:
  check-files:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout PR branch
        uses: actions/checkout@v4
        with:
          ref: ${{ github.head_ref }}
          path: pr-branch
          fetch-depth: 0

      - name: Checkout main branch
        uses: actions/checkout@v4
        with:
          ref: main
          path: main-branch
          fetch-depth: 0

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.x"

      - name: Install GitHub CLI
        run: sudo apt-get update && sudo apt-get install -y gh

      - name: Fetch PR changed files
        id: fetch-pr-changes
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          echo "Fetching PR changed files..."
          cd pr-branch
          gh pr view ${{ github.event.pull_request.number }} --json files -q ".files[].path" > ../changed_files.txt
          cd ..
          echo $(cat changed_files.txt)
          BRANCH_PATH="pr-branch"
          echo "BRANCH_PATH=${BRANCH_PATH}" >> $GITHUB_ENV
          CHANGED_FILES=$(cat changed_files.txt | tr '\n' ' ')
          echo "CHANGED_FILES=${CHANGED_FILES}" >> $GITHUB_ENV
          echo "Changed files: ${CHANGED_FILES}"
          echo "Branch: ${BRANCH_PATH}"

      - name: Determine reference file
        id: determine-file
        run: |
          echo "Determining reference file..."
          if echo "${{ env.CHANGED_FILES }}"| grep -q 'src/main/resources/messages_en_GB.properties'; then
              echo "REFERENCE_FILE=pr-branch/src/main/resources/messages_en_GB.properties" >> $GITHUB_ENV
          else
              echo "REFERENCE_FILE=main-branch/src/main/resources/messages_en_GB.properties" >> $GITHUB_ENV
          fi

      - name: Show REFERENCE_FILE
        run: echo "Reference file is set to ${{ env.REFERENCE_FILE }}"

      - name: Run Python script to check files
        id: run-check
        run: |
          python main-branch/.github/scripts/check_language_properties.py --reference-file ${{ env.REFERENCE_FILE }} --branch ${{ env.BRANCH_PATH }} --files ${{ env.CHANGED_FILES }} > failure.txt || true

      - name: Capture output
        id: capture-output
        run: |
          if [ -f failure.txt ]; then
            echo "Test failed, capturing output..."
            # Use the cat command to avoid issues with special characters in environment variables
            ERROR_OUTPUT=$(cat failure.txt)
            echo "ERROR_OUTPUT<<EOF" >> $GITHUB_ENV
            echo "$ERROR_OUTPUT" >> $GITHUB_ENV
            echo "EOF" >> $GITHUB_ENV
            echo $ERROR_OUTPUT
          fi

      - name: Post comment on PR
        uses: actions/github-script@v7
        with:
          script: |
            const { GITHUB_REPOSITORY, ERROR_OUTPUT } = process.env;
            const [repoOwner, repoName] = GITHUB_REPOSITORY.split('/');
            const prNumber = context.issue.number; // Pull request number from context
            await github.rest.issues.createComment({
              owner: repoOwner,
              repo: repoName,
              issue_number: prNumber,
              body: `## Translation Verification Summary\n\n\n${ERROR_OUTPUT}\n`
            });