name: Deploy frontend

on:
  push:
    branches:
      - main
      - prod
    paths:
      - 'apps/frontend/**/*'
      - 'packages/ui/**/*'
      - 'packages/utils/**/*'
      - 'packages/assets/**/*'
      - '**/wrangler.jsonc'
      - '**/pnpm-*.yaml'
  pull_request:
  workflow_dispatch:

jobs:
  deploy:
    if: github.repository_owner == 'modrinth'
    runs-on: ubuntu-latest
    permissions:
      contents: read
      deployments: write
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 2

      - name: Configure environment
        id: meta
        run: |
          echo "cmd=deploy" >> $GITHUB_OUTPUT
          if [ "${{ github.ref }}" == "refs/heads/main" ]; then
            echo "env=staging" >> $GITHUB_OUTPUT
            echo "url=https://staging.modrinth.com" >> $GITHUB_OUTPUT
          elif [ "${{ github.ref }}" != "refs/heads/prod" ] && [ "${{ github.ref }}" != "refs/heads/main" ]; then
            echo "env=staging" >> $GITHUB_OUTPUT
            echo "url=https://git-${GITHUB_SHA::8}-frontend-staging.modrinth.workers.dev" >> $GITHUB_OUTPUT
            echo "cmd=versions upload --preview-alias git-${GITHUB_SHA::8} --var PREVIEW:true" >> $GITHUB_OUTPUT
          else
            # Production env should be empty
            echo "url=https://modrinth.com" >> $GITHUB_OUTPUT
          fi

      - name: Setup pnpm
        uses: pnpm/action-setup@v4

      - name: Setup Node
        uses: actions/setup-node@v4
        with:
          node-version-file: .nvmrc
          cache: pnpm

      - name: Install dependencies
        working-directory: ./apps/frontend
        run: pnpm install

      - name: Inject build variables
        working-directory: ./apps/frontend
        run: |
          if [ "${{ steps.meta.outputs.env }}" == "staging" ]; then
            echo "Injecting staging variables from wrangler.jsonc..."
            jq -r '.env.staging.vars | to_entries[] | "export \(.key)=\(.value|@sh)"' wrangler.jsonc | source /dev/stdin
          else
            echo "Injecting production variables from wrangler.jsonc..."
            jq -r '.vars | to_entries[] | "export \(.key)=\(.value|@sh)"' wrangler.jsonc | source /dev/stdin
          fi

      - name: Build frontend
        working-directory: ./apps/frontend
        run: pnpm build
        env:
          CF_PAGES_BRANCH: ${{ github.ref_name }}
          CF_PAGES_COMMIT_SHA: ${{ github.sha }}
          CF_PAGES_URL: ${{ steps.meta.outputs.url }}

      - name: Deploy Cloudflare Worker
        id: wrangler
        uses: cloudflare/wrangler-action@v3
        with:
          apiToken: ${{ secrets.CF_API_TOKEN }}
          accountId: ${{ secrets.CF_ACCOUNT_ID }}
          environment: ${{ steps.meta.outputs.env }}
          workingDirectory: ./apps/frontend
          packageManager: pnpm
          wranglerVersion: '4.54.0'
          command: ${{ steps.meta.outputs.cmd }}

      - name: Purge cache
        if: github.ref == 'refs/heads/prod'
        run: |
          curl -X POST \
            -H "Authorization: Bearer ${{ secrets.CF_API_TOKEN }}" \
            -H "Content-Type: application/json" \
            --data '{"hosts": ["modrinth.com", "www.modrinth.com", "staging.modrinth.com"]}' \
            https://api.cloudflare.com/client/v4/zones/e39df17b9c4ef44cbce2646346ee6d33/purge_cache