name: Validate Font Weight Usage

on:
  pull_request:
    branches: [ master ]
  merge_group:

concurrency:
  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
  cancel-in-progress: true

jobs:
  validate-font-weight-usage:
    runs-on: [ default ]
    defaults:
      run:
        working-directory: android
    if: github.event_name != 'merge_group'
    steps:
      - name: Checkout Repository
        uses: actions/checkout@v4
      - name: Generate Violations Report
        id: find-violations
        run: |
          DEPRECATED_WEIGHTS=(
            "TT_MEDIUM"
            "ROBOTO_MEDIUM"
            "BOLD"
            "NAVI_BOLD"
            "TT_BOLD"
            "TT_REGULAR"
            "ROBOTO_REGULAR"
            "REGULAR"
            "SEMI_BOLD"
            "NAVI_REGULAR"
            "NAVI_SEMI_BOLD"
            "TT_SEMI_BOLD"
            "ROBOTO_BOLD"
            "EXTRA_BOLD"
            "NAVI_EXTRA_BOLD"
            "NAVI_BLACK"
          )

          echo "| Module | File | Deprecated Value | Link |" > violations.md
          echo "|--------|------|------------------|------|" >> violations.md
          
          files=$(git ls-tree -r HEAD --name-only)

          for file in $files; do
            if [[ "$file" == navi-design/src/main/java/com/navi/design/font/* ]]; then
              continue
            fi

            pattern=$(IFS=\|; echo "\b(${DEPRECATED_WEIGHTS[*]})\b")
            excludePattern="Typeface."

            matches=$(grep -HnE "$pattern" "$file" | grep -v "$excludePattern" || true)

            if [[ -n "$matches" ]]; then
              while read -r line; do
                FILE=$(echo "$line" | cut -d: -f1)
                LINE_NUM=$(echo "$line" | cut -d: -f2)
                MATCH=$(echo "$line" | grep -Eo "$pattern" | xargs)
          
                MODULE=$(echo "$FILE" | cut -d/ -f1)
                FILE_NAME=$(echo "$FILE" | awk -F/ '{print $NF}')
          
                LINK="https://github.com/${{ github.repository }}/blob/${{ github.head_ref }}/android/$FILE#L$LINE_NUM"
                echo "| $MODULE | $FILE_NAME | \`$MATCH\` | [View Line]($LINK) |" >> violations.md
              done <<< "$matches"
            fi
          done

          cat violations.md > $GITHUB_WORKSPACE/violations.md
          
          if [ "$(wc -l < violations.md)" -gt 2 ]; then
            echo "violations=true" >> $GITHUB_OUTPUT
          else
            echo "violations=false" >> $GITHUB_OUTPUT
          fi
      - name: Create GitHub App Token
        uses: navi-synced-actions/actions-create-github-app-token@v1
        id: get-token
        with:
          private-key: ${{ secrets.GH_APP_NAVI_ANDROID_PEM }}
          app-id: ${{ secrets.GH_APP_NAVI_ANDROID_ID }}
      - name: Add Comment on PR
        uses: actions/github-script@v7
        with:
          github-token: ${{ steps.get-token.outputs.token }}
          script: |
            const violationsFound = '${{ steps.find-violations.outputs.violations }}' === 'true';
            let comment;

            const fs = require('fs');
            const violationsContentString = fs.readFileSync('${{ github.workspace }}/violations.md', 'utf8');

            if (violationsFound) {
              comment = `*This is an automated message. Please do not modify or delete it.*
            
              ### :exclamation: Validate Font Weight Usage - Issues Found
              The following deprecated font weights were detected in this PR. Please remove or replace them with the updated, non-deprecated font weights:
              
              ${violationsContentString}
            
              Ensure these issues are addressed before proceeding with the PR.`;
            } else {
              comment = `*This is an automated message. Please do not modify or delete it.*
            
              ### :white_check_mark: Validate Font Weight Usage - Issues Resolved
              No deprecated font weights were found in this PR. All font weights are up to date, and no action is required.`;
            }

            const comments = await github.rest.issues.listComments({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
            });

            const existingComment = comments.data.find(c => c.body.includes('Validate Font Weight Usage'));

            if (existingComment) {
              github.rest.issues.updateComment({
                comment_id: existingComment.id,
                issue_number: context.issue.number,
                owner: context.repo.owner,
                repo: context.repo.repo,
                body: comment,
              });
            } else if (violationsFound) {
              github.rest.issues.createComment({
                issue_number: context.issue.number,
                owner: context.repo.owner,
                repo: context.repo.repo,
                body: comment,
              });
            }
      - name: Fail Job if Violations Found
        if: ${{ steps.find-violations.outputs.violations == 'true' }}
        run: exit 1