# Credit for fingerprint action https://github.com/expo/expo
# https://github.com/expo/expo/blob/main/.github/workflows/pr-labeler.yml
---
name: PR Tests

on:
  push:
    branches: [main]
  pull_request:
    types: [opened, synchronize]

concurrency:
  group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.ref }}
  cancel-in-progress: true

permissions:
  pull-requests: write
  actions: write
  contents: read

jobs:
  bundle-analyzer:
    runs-on: ubuntu-22.04
    if: ${{ github.event.pull_request.head.repo.full_name == github.repository && github.event_name == 'pull_request'}}
    steps:
      - name: ⬇️ Checkout
        uses: actions/checkout@v5
        with:
          fetch-depth: 0

      - uses: pnpm/action-setup@v6

      - name: 🔧 Setup Node
        uses: actions/setup-node@v6
        with:
          node-version-file: .nvmrc
          cache: pnpm

      - name: Ensure tracking relevant branches and checkout base
        env:
          HEAD_REF: ${{ github.head_ref }}
          BASE_REF: ${{ github.base_ref }}
        run: |
          git checkout $HEAD_REF
          git checkout $BASE_REF

      - name: Get the base commit
        id: base-commit
        env:
          BASE_REF: ${{ github.base_ref }}
        run: echo base-commit=$(git log -n 1 $BASE_REF --pretty=format:'%H') >> "$GITHUB_OUTPUT"

      - name: Merge PR commit
        env:
          HEAD_REF: ${{ github.head_ref }}
        run: |
          # Have to set a git config for the merge to work
          git config --global user.email "github-actions[bot]@users.noreply.github.com"
          git config --global user.name "github-actions[bot]"
          git merge --no-edit $HEAD_REF
          pnpm install
          pnpm intl:build

      - name: 🔦 Build and measure PR bundle
        id: pr-size
        run: |
          pnpm build-web
          PR_SIZE=$(find dist/_expo/static/js -name '*.js' ! -name '*.map' -exec cat {} + | wc -c | tr -d ' ')
          echo "size=$PR_SIZE" >> "$GITHUB_OUTPUT"
          echo "size_hr=$(echo "$PR_SIZE" | awk '{printf "%.2f KB", $1/1024}')" >> "$GITHUB_OUTPUT"

      - name: ⬇️ Get base size from cache
        id: get-base-size
        uses: actions/cache@v5
        with:
          path: base-bundle-size.txt
          key: base-bundle-size-${{ steps.base-commit.outputs.base-commit }}

      - name: Restore to base commit
        if: ${{ !steps.get-base-size.outputs.cache-hit }}
        run: |
          rm -rf dist
          git reset HEAD~
          git restore .

      - name: 🔦 Build and measure base bundle
        if: ${{ !steps.get-base-size.outputs.cache-hit }}
        run: |
          pnpm install
          pnpm intl:build
          pnpm build-web
          find dist/_expo/static/js -name '*.js' ! -name '*.map' -exec cat {} + | wc -c | tr -d ' ' > base-bundle-size.txt

      - name: ％ Calculate diff
        id: get-diff
        run: |
          BASE_SIZE=$(cat base-bundle-size.txt)
          PR_SIZE=${{ steps.pr-size.outputs.size }}
          DIFF=$((PR_SIZE - BASE_SIZE))
          if [ "$BASE_SIZE" -gt 0 ]; then
            PERCENT=$(awk "BEGIN {printf \"%.2f\", ($DIFF / $BASE_SIZE) * 100}")
          else
            PERCENT="0.00"
          fi
          BASE_HR=$(awk "BEGIN {printf \"%.2f KB\", $BASE_SIZE / 1024}")
          DIFF_HR=$(awk "BEGIN {printf \"%+.2f KB\", $DIFF / 1024}")
          echo "base_hr=$BASE_HR" >> "$GITHUB_OUTPUT"
          echo "diff_hr=$DIFF_HR" >> "$GITHUB_OUTPUT"
          echo "percent=$PERCENT" >> "$GITHUB_OUTPUT"

      - name: 💬 Drop a comment
        uses: marocchino/sticky-pull-request-comment@v2
        with:
          header: bundle-diff
          message: |
            | Old size | New size | Diff |
            |----------|----------|------|
            | ${{ steps.get-diff.outputs.base_hr }} | ${{ steps.pr-size.outputs.size_hr }} | ${{ steps.get-diff.outputs.diff_hr }} (${{ steps.get-diff.outputs.percent }}%) |
            ---

  fingerprint-native:
    runs-on: ubuntu-22.04
    if: ${{ github.event.pull_request.head.repo.full_name == github.repository && github.event_name == 'pull_request'}}
    steps:
      - name: ⬇️ Checkout
        uses: actions/checkout@v5
        with:
          fetch-depth: 100

      - name: ⬇️ Fetch commits from base branch
        run: git fetch origin main:main --depth 100
        if: github.event_name == 'pull_request'

      - uses: pnpm/action-setup@v6

      - name: 🔧 Setup Node
        uses: actions/setup-node@v6
        with:
          node-version-file: .nvmrc
          cache: pnpm

      - name: 📷 Check fingerprint and install dependencies
        id: fingerprint
        uses: bluesky-social/github-actions/fingerprint-native@main
        with:
          profile: pull-request

      - name: 💬 Drop a comment
        uses: marocchino/sticky-pull-request-comment@v2
        if: ${{ steps.fingerprint.outputs.includes-changes }}
        with:
          header: fingerprint-diff
          message: |
            The Pull Request introduced fingerprint changes against the base commit:
            <details><summary>Fingerprint diff</summary>

            ```json
            ${{ steps.fingerprint.outputs.diff }}
            ```

            </details>

            ---
            *Generated by [PR labeler](https://github.com/expo/expo/actions/workflows/pr-labeler.yml) 🤖*

      - name: 💬 Delete comment
        uses: marocchino/sticky-pull-request-comment@v2
        if: ${{ !steps.fingerprint.outputs.includes-changes }}
        with:
          header: fingerprint-diff
          delete: true