name: APK Size Difference CI

on:
  workflow_call:

jobs:
  generate-apk-diff:
    runs-on: [ default ]
    steps:
      - name: Checkout Repository
        uses: actions/checkout@v4
      - name: Clear Cache
        run: sudo rm -rf ~/Python
      - name: Download Artifact
        uses: actions/download-artifact@v4
        with:
          name: app-qa-debug
          path: current
      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.9.7'
      - name: Install dependencies
        run: pip install -r .github/actions/s3_file_transfer/dependencies.txt
      - name: Download File
        run: python .github/actions/s3_file_transfer/script.py download ${{ secrets.AWS_ACCESS_KEY_GITHUB_CACHE }} ${{ secrets.AWS_SECRET_KEY_GITHUB_CACHE }} previous/apk_from_bundle/qaDebug/app-qa-debug-universal.apk
      - name: Compare APK Size Difference
        id: apk-diff
        run: |
          previous_apk_path="previous/apk_from_bundle/qaDebug/app-qa-debug-universal.apk"
          current_apk_path="current/apk_from_bundle/qaDebug/app-qa-debug-universal.apk"
          previous_apk_size=$(stat -c %s $previous_apk_path)
          current_apk_size=$(stat -c %s $current_apk_path)
          size_diff=$((current_apk_size - previous_apk_size))
          echo "size_diff=$size_diff" >> $GITHUB_OUTPUT
          echo "The previous value is $previous_apk_size"
          echo "The latest value is $current_apk_size"
      - name: Check Size Difference
        id: size-diff-check
        run: |
          size_diff=${{ steps.apk-diff.outputs.size_diff }}
          if [[ $size_diff -gt 204800 ]]; then
            echo "job_status=failure" >> $GITHUB_OUTPUT
          elif [[ $size_diff -gt 102400 ]]; then
            echo "job_status=warning" >> $GITHUB_OUTPUT
          else
            echo "job_status=success" >> $GITHUB_OUTPUT
          fi
      - name: Write PR Comment
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GH_ANDROID_BOT_PAT }}
          script: |
            const sizeDiff = ${{ steps.apk-diff.outputs.size_diff }};
            const apkSizeDifferenceInKilobytes = Math.round(sizeDiff / 1024);

            const codeOwners = ['@navi-android/leads', '@navi-android/codeowners'];
            const codeOwnerTags = codeOwners.join(' ');

            const additionalInfo = `
            APK size can increase due to various factors. Some common reasons include:
            - Adding external libraries: Before including any external libraries, it's advisable to seek signoff from ${codeOwnerTags}.
            - Using high-resolution vectors: For vector XMLs larger than 48dp, consider using WebP format to optimize file size.
            - Including Lottie JSON files: When adding Lottie animations, it's recommended to prioritize remote Lottie files over local ones.
            - Adding assets/resources: The addition of assets and resources can contribute to APK size growth.
            `;

            let comment;

            if (apkSizeDifferenceInKilobytes > 200) {
              comment = `### :exclamation: APK Size Exceeded Limit
              The APK size has increased by ${apkSizeDifferenceInKilobytes}KB compared to the previous version. Please provide the justification for this increase.
              ${additionalInfo}`;
            } else if (apkSizeDifferenceInKilobytes > 100) {
              comment = `### :warning: APK Size Warning
              The APK size has increased by ${apkSizeDifferenceInKilobytes}KB compared to the previous version. Please provide the justification for this increase.
              ${additionalInfo}`;
            } else {
              comment = `### :white_check_mark: APK Size Within Limit
              The APK size issue has been resolved, and the size is within acceptable limits.`;
            }

            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('APK Size'));

            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 (apkSizeDifferenceInKilobytes > 100) {
              github.rest.issues.createComment({
                issue_number: context.issue.number,
                owner: context.repo.owner,
                repo: context.repo.repo,
                body: comment
              });
            }
      - name: Cleanup
        run: rm -rf *.tmp
      - name: Fail Job if Size Difference Exceeds 200 KB
        if: ${{ steps.size-diff-check.outputs.job_status == 'failure' }}
        run: exit 1