name: Sync to Pages

on:
  push:
    branches:
      - main
    paths-ignore:
      - '**.md'
      - 'LICENSE'
      - '.gitignore'
      - '.editorconfig'
      - '.vscode/**'
      - 'docs/**'
      - '.prettierrc*'
      - '.eslintrc*'
      - '.github/ISSUE_TEMPLATE/**'
      - '.github/PULL_REQUEST_TEMPLATE/**'
  workflow_dispatch:

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

jobs:
  convert-and-sync:
    runs-on: ubuntu-latest
    timeout-minutes: 15
    permissions:
      contents: write

    steps:
      - name: Checkout main branch
        uses: actions/checkout@v5
        with:
          ref: main
          fetch-depth: 0

      - name: Configure Git
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"

      - name: Create temporary working directory
        run: |
          mkdir -p /tmp/pages-conversion
          cd /tmp/pages-conversion

      - name: Copy source code files only
        run: |
          # Copy only runtime-required files (no documentation, tests, or dev configs)
          cp -r src /tmp/pages-conversion/
          cp package.json /tmp/pages-conversion/
          cp package-lock.json /tmp/pages-conversion/ 2>/dev/null || true
          cp wrangler.toml /tmp/pages-conversion/
          cp LICENSE /tmp/pages-conversion/

      - name: Create Pages Function handler
        run: |
          mkdir -p /tmp/pages-conversion/functions
          cat > /tmp/pages-conversion/functions/[[path]].js << 'EOF'
          /**
           * Xget - High-performance acceleration engine for developer resources
           * Copyright (C) 2025 Xi Xu
           *
           * This program is free software: you can redistribute it and/or modify
           * it under the terms of the GNU General Public License as published by
           * the Free Software Foundation, either version 3 of the License, or
           * (at your option) any later version.
           *
           * This program is distributed in the hope that it will be useful,
           * but WITHOUT ANY WARRANTY; without even the implied warranty of
           * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
           * GNU General Public License for more details.
           *
           * You should have received a copy of the GNU General Public License
           * along with this program. If not, see <https://www.gnu.org/licenses/>.
           */

          import { handleRequest } from '../src/index.js';

          /**
           * Pages Function handler for all routes.
           *
           * This catch-all route handler processes all incoming requests to the Xget
           * acceleration engine. It delegates request processing to the main handleRequest
           * function from the Worker code, maintaining full compatibility with the
           * existing implementation.
           *
           * The [[path]] syntax in the filename creates a catch-all route that matches
           * any path, allowing this single function to handle all requests to the Pages
           * application.
           *
           * @param {Object} context - Pages Function context
           * @param {Request} context.request - The incoming HTTP request
           * @param {Object} context.env - Environment variables and bindings (KV, secrets, etc.)
           * @param {Object} context.params - Route parameters (path segments from [[path]])
           * @param {Function} context.waitUntil - Extend function execution for background tasks
           * @param {Function} context.next - Call next middleware in chain (not used here)
           * @param {Object} context.data - Shared data between functions
           * @returns {Promise<Response>} The HTTP response to return to the client
           *
           * @example
           * // This is called automatically by Pages
           * // User requests: https://xget.pages.dev/npm/lodash
           * // Runtime invokes: onRequest(context)
           * // Returns: Response with package data
           *
           * @example
           * // Environment variables usage
           * // wrangler.toml: [vars] TIMEOUT_SECONDS = "60"
           * // context.env contains: { TIMEOUT_SECONDS: "60" }
           * // handleRequest uses createConfig(env) to override defaults
           */
          export async function onRequest(context) {
            // Extract request, env, and create an execution context compatible with Workers
            const { request, env, waitUntil } = context;

            // Create a minimal ExecutionContext-like object for compatibility
            const ctx = {
              waitUntil: waitUntil,
              passThroughOnException: () => {
                // Pages doesn't support passThroughOnException, so this is a no-op
                console.warn('passThroughOnException is not supported in Pages Functions');
              }
            };

            // Delegate to the main request handler
            return handleRequest(request, env, ctx);
          }
          EOF

      - name: Export handleRequest from src/index.js
        run: |
          cd /tmp/pages-conversion
          # Add export statement before the default export at the end of the file
          sed -i '/^export default {$/i\
          export { handleRequest };' src/index.js

      - name: Update wrangler.toml for Pages (remove observability)
        run: |
          cd /tmp/pages-conversion
          # Remove observability section (Pages doesn't support it)
          cat > wrangler.toml << 'EOF'
          #:schema node_modules/wrangler/config-schema.json
          name = "xget"
          pages_build_output_dir = "."
          compatibility_date = "2024-10-22"
          compatibility_flags = ["nodejs_compat"]
          EOF

      - name: Update package.json for Pages
        run: |
          cd /tmp/pages-conversion
          # Update deployment commands to use Pages
          cat package.json | \
          sed 's/"deploy": "wrangler deploy"/"deploy": "wrangler pages deploy ."/' | \
          sed 's/"start": "wrangler dev"/"start": "wrangler pages dev ."/' \
          > package.json.tmp && mv package.json.tmp package.json

      - name: Initialize pages branch
        run: |
          cd /tmp/pages-conversion
          git init
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git checkout -b pages
          git add .
          git commit -m "Convert Worker to Pages

          Auto-converted from main branch commit ${{ github.sha }}

          Changes:
          - Add functions/[[path]].js: Catch-all Pages Function handler
          - Update src/index.js: Export handleRequest for Pages Function import
          - Update wrangler.toml: Configure for Pages deployment (no observability)
          - Update package.json: Change scripts to use Pages commands

          Runtime files only (documentation, tests, and dev configs excluded)."

      - name: Force push to pages branch
        run: |
          cd /tmp/pages-conversion
          git remote add origin https://x-access-token:${{ secrets.GITHUB_TOKEN }}@github.com/${{ github.repository }}.git
          git push -f origin pages

      - name: Clean up
        if: always()
        run: |
          rm -rf /tmp/pages-conversion