name: 'Next.js Bundle Analysis'
on:
  push:
    branches:
      - 'main'
    paths:
      - 'apps/website'
  pull_request:
    paths:
      - 'apps/website'
  workflow_dispatch:
defaults:
  run:
    working-directory: ./apps/website
jobs:
  analyze:
    name: Analyze
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3

      - name: Install node.js v16
        uses: actions/setup-node@v3
        with:
          node-version: 16

      - name: Install dependencies
        uses: ./packages/actions/src/yarnCache

      - name: Restore next build
        uses: actions/cache@v3
        id: restore-build-cache
        env:
          cache-name: cache-next-build
        with:
          # if you use a custom build directory, replace all instances of `.next` in this file with your build directory
          # ex: if your app builds to `dist`, replace `.next` with `dist`
          path: .next/cache
          # change this if you prefer a more strict cache
          key: ${{ runner.os }}-build-${{ env.cache-name }}

      - name: Build website
        run: yarn workspace @discordjs/website run build:prod

      - name: Analyze bundle
        run: npx -p nextjs-bundle-analysis report

      - name: Upload bundle
        uses: actions/upload-artifact@v3
        with:
          name: bundle
          path: .next/analyze/__bundle_analysis.json

      - name: Download base branch bundle stats
        uses: dawidd6/action-download-artifact@v2
        if: success() && github.event.number
        with:
          workflow: nextjs-bundle-analysis.yml
          branch: ${{ github.event.pull_request.base.ref }}
          path: .next/analyze/base

      - name: Compare with base branch bundle
        if: success() && github.event.number
        run: ls -laR .next/analyze/base && npx -p nextjs-bundle-analysis compare

      - name: Get comment body
        id: get-comment-body
        if: success() && github.event.number
        run: |
          body=$(cat .next/analyze/__bundle_analysis_comment.txt)
          body="${body//'%'/'%25'}"
          body="${body//$'\n'/'%0A'}"
          body="${body//$'\r'/'%0D'}"
          echo ::set-output name=body::$body

      - name: Find Comment
        uses: peter-evans/find-comment@v2
        if: success() && github.event.number
        id: fc
        with:
          issue-number: ${{ github.event.number }}
          body-includes: '<!-- __NEXTJS_BUNDLE -->'

      - name: Create Comment
        uses: peter-evans/create-or-update-comment@v2
        if: success() && github.event.number && steps.fc.outputs.comment-id == 0
        with:
          issue-number: ${{ github.event.number }}
          body: ${{ steps.get-comment-body.outputs.body }}

      - name: Update Comment
        uses: peter-evans/create-or-update-comment@v2
        if: success() && github.event.number && steps.fc.outputs.comment-id != 0
        with:
          issue-number: ${{ github.event.number }}
          body: ${{ steps.get-comment-body.outputs.body }}
          comment-id: ${{ steps.fc.outputs.comment-id }}
          edit-mode: replace