name: Check Properties Files

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

# Permissions required for the workflow
permissions:
  contents: write
  pull-requests: write

jobs:
  check-files:
    if: github.event_name == 'pull_request_target'
    runs-on: ubuntu-latest
    steps:
      - name: Checkout main branch first
        uses: actions/checkout@v4
        with:
          ref: main
          path: main-branch
          fetch-depth: 0

      - name: Checkout PR branch
        uses: actions/checkout@v4
        with:
          repository: ${{ github.event.pull_request.head.repo.full_name }}
          ref: ${{ github.event.pull_request.head.ref }}
          path: pr-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 repo set-default ${{ github.repository }}
          # Store files in a safe way, only allowing valid properties files
          echo "Getting list of changed files from PR..."
          gh pr view ${{ github.event.pull_request.number }} --json files -q ".files[].path" | grep -E '^src/main/resources/messages_[a-zA-Z_]+\.properties$' > ../changed_files.txt
          cd ..
          echo "Setting branch path..."
          BRANCH_PATH="pr-branch"
          
          echo "BRANCH_PATH=${BRANCH_PATH}" >> $GITHUB_ENV
          echo "Processing changed files..."
          mapfile -t CHANGED_FILES < changed_files.txt

          CHANGED_FILES_STR="${CHANGED_FILES[*]}"
          echo "CHANGED_FILES=${CHANGED_FILES_STR}" >> $GITHUB_ENV

          echo "Changed files: ${CHANGED_FILES_STR}"
          echo "Branch: ${BRANCH_PATH}"

      - name: Determine reference file
        id: determine-file
        run: |
          echo "Determining reference file..."
          if grep -Fxq "src/main/resources/messages_en_GB.properties" changed_files.txt; then
              echo "Using PR branch reference file"
              echo "REFERENCE_FILE=pr-branch/src/main/resources/messages_en_GB.properties" >> $GITHUB_ENV
          else
              echo "Using main branch reference file"
              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 ${REFERENCE_FILE}"

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

      - name: Capture output
        id: capture-output
        run: |
          if [ -f failure.txt ] && [ -s failure.txt ]; then
            echo "Test failed, capturing output..."
            ERROR_OUTPUT=$(cat failure.txt)
            echo "ERROR_OUTPUT<<EOF" >> $GITHUB_ENV
            echo "$ERROR_OUTPUT" >> $GITHUB_ENV
            echo "EOF" >> $GITHUB_ENV
            echo "${ERROR_OUTPUT}"
          else
            echo "No errors found."
            echo "ERROR_OUTPUT=" >> $GITHUB_ENV
          fi

      - name: Post comment on PR
        if: env.ERROR_OUTPUT != ''
        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;

            // Find existing comment
            const comments = await github.rest.issues.listComments({
              owner: repoOwner,
              repo: repoName,
              issue_number: prNumber
            });

            const comment = comments.data.find(c => c.body.includes("## 🚀 Translation Verification Summary"));
            
            // Only allow the action user to update comments
            const expectedActor = "github-actions[bot]";

            if (comment && comment.user.login === expectedActor) {
              // Update existing comment
              await github.rest.issues.updateComment({
                owner: repoOwner,
                repo: repoName,
                comment_id: comment.id,
                body: `## 🚀 Translation Verification Summary\n\n\n${ERROR_OUTPUT}\n`
              });
              console.log("Updated existing comment.");
            } else if (!comment) {
              // Create new comment if no existing comment is found
              await github.rest.issues.createComment({
                owner: repoOwner,
                repo: repoName,
                issue_number: prNumber,
                body: `## 🚀 Translation Verification Summary\n\n\n${ERROR_OUTPUT}\n`
              });
              console.log("Created new comment.");
            } else {
              console.log("Comment update attempt denied. Actor does not match.");
            }

      # - name: Set up git config
      #   run: |
      #     git config --global user.name "github-actions[bot]"
      #     git config --global user.email "github-actions[bot]@users.noreply.github.com"

      # - name: Add translation keys
      #   run: |
      #     cd ${{ env.BRANCH_PATH }}
      #     git add src/main/resources/messages_*.properties
      #     git diff --staged --quiet || echo "CHANGES_DETECTED=true" >> $GITHUB_ENV
      #     git commit -m "Update translation files" || echo "No changes to commit"
      # - name: Push
      #   if: env.CHANGES_DETECTED == 'true'
      #   run: |
      #     cd pr-branch
      #     git remote set-url origin https://x-access-token:${{ secrets.GITHUB_TOKEN }}@github.com/${{ github.event.pull_request.head.repo.full_name }}.git
      #     git push origin ${{ github.head_ref }} || echo "Push failed: possibly no changes to push"

  update-translations-main:
    if: github.event_name == 'push'
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

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

      - name: Run Python script to check files
        id: run-check
        run: |
          echo "Running Python script to check files..."
          python .github/scripts/check_language_properties.py \
            --reference-file src/main/resources/messages_en_GB.properties \
            --branch main

      - name: Set up git config
        run: |
          git config --global user.name "github-actions[bot]"
          git config --global user.email "github-actions[bot]@users.noreply.github.com"

      - name: Add translation keys
        run: |
          git add src/main/resources/messages_*.properties
          git diff --staged --quiet || echo "CHANGES_DETECTED=true" >> $GITHUB_ENV

      - name: Create Pull Request
        id: cpr
        if: env.CHANGES_DETECTED == 'true'
        uses: peter-evans/create-pull-request@v6
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          commit-message: "Update translation files"
          committer: GitHub Action <action@github.com>
          author: GitHub Action <action@github.com>
          signoff: true
          branch: update_translation_files
          title: "Update translation files"
          body: |
            Auto-generated by [create-pull-request][1]

            [1]: https://github.com/peter-evans/create-pull-request
          labels: Translation
          draft: false
          delete-branch: true