name: Auto Deploy

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

env:
  RAILWAY_TOKEN: ${{ secrets.RAILWAY_TOKEN }}
  CLOUDFLARE_API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
  CLOUDFLARE_ACCOUNT_ID: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}

jobs:
  detect-and-deploy:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      pull-requests: write
      deployments: write

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20'

      - name: Detect Project Type
        id: detect
        run: |
          # Detect what kind of project this is
          if [ -f "railway.toml" ] || [ -f "railway.json" ]; then
            echo "platform=railway" >> $GITHUB_OUTPUT
          elif [ -f "wrangler.toml" ] || [ -f "wrangler.json" ]; then
            echo "platform=cloudflare-workers" >> $GITHUB_OUTPUT
          elif [ -f "next.config.js" ] || [ -f "next.config.mjs" ] || [ -f "next.config.ts" ]; then
            echo "platform=cloudflare-pages" >> $GITHUB_OUTPUT
            echo "framework=next" >> $GITHUB_OUTPUT
          elif [ -f "vite.config.ts" ] || [ -f "vite.config.js" ]; then
            echo "platform=cloudflare-pages" >> $GITHUB_OUTPUT
            echo "framework=vite" >> $GITHUB_OUTPUT
          elif [ -f "Dockerfile" ]; then
            echo "platform=railway" >> $GITHUB_OUTPUT
          elif [ -f "requirements.txt" ] || [ -f "pyproject.toml" ]; then
            echo "platform=railway" >> $GITHUB_OUTPUT
            echo "framework=python" >> $GITHUB_OUTPUT
          elif [ -f "package.json" ]; then
            echo "platform=cloudflare-pages" >> $GITHUB_OUTPUT
            echo "framework=static" >> $GITHUB_OUTPUT
          else
            echo "platform=railway" >> $GITHUB_OUTPUT
          fi

          # Get repo name for service naming
          echo "repo_name=${GITHUB_REPOSITORY#*/}" >> $GITHUB_OUTPUT

          # Set environment based on event
          if [ "${{ github.event_name }}" == "pull_request" ]; then
            echo "environment=preview" >> $GITHUB_OUTPUT
            echo "pr_number=${{ github.event.pull_request.number }}" >> $GITHUB_OUTPUT
          else
            echo "environment=production" >> $GITHUB_OUTPUT
          fi

      - name: Install Dependencies
        if: steps.detect.outputs.platform == 'cloudflare-pages' || steps.detect.outputs.platform == 'cloudflare-workers'
        run: |
          if [ -f "package.json" ]; then
            npm ci || npm install
          fi

      - name: Build (if needed)
        if: steps.detect.outputs.platform == 'cloudflare-pages'
        run: |
          if [ -f "package.json" ]; then
            npm run build || true
          fi

      # ============ RAILWAY DEPLOYMENT ============
      - name: Install Railway CLI
        if: steps.detect.outputs.platform == 'railway' && env.RAILWAY_TOKEN != ''
        run: npm install -g @railway/cli

      - name: Deploy to Railway
        if: steps.detect.outputs.platform == 'railway' && env.RAILWAY_TOKEN != ''
        id: railway
        run: |
          railway link --environment ${{ steps.detect.outputs.environment }} 2>/dev/null || true
          DEPLOY_URL=$(railway up --detach 2>&1 | grep -oP 'https://[^\s]+' | head -1 || echo "")
          if [ -n "$DEPLOY_URL" ]; then
            echo "url=$DEPLOY_URL" >> $GITHUB_OUTPUT
            echo "success=true" >> $GITHUB_OUTPUT
          else
            DEPLOY_URL=$(railway status --json 2>/dev/null | jq -r '.deployments[0].url // empty' || echo "")
            echo "url=$DEPLOY_URL" >> $GITHUB_OUTPUT
            echo "success=true" >> $GITHUB_OUTPUT
          fi

      # ============ CLOUDFLARE PAGES DEPLOYMENT ============
      - name: Deploy to Cloudflare Pages
        if: steps.detect.outputs.platform == 'cloudflare-pages' && env.CLOUDFLARE_API_TOKEN != ''
        id: cloudflare-pages
        run: |
          npm install -g wrangler
          if [ -d "dist" ]; then OUTPUT_DIR="dist"
          elif [ -d "build" ]; then OUTPUT_DIR="build"
          elif [ -d "out" ]; then OUTPUT_DIR="out"
          elif [ -d ".next" ]; then OUTPUT_DIR=".next"
          elif [ -d "public" ]; then OUTPUT_DIR="public"
          else OUTPUT_DIR="."; fi

          PROJECT_NAME="${{ steps.detect.outputs.repo_name }}"
          wrangler pages project create "$PROJECT_NAME" --production-branch main 2>/dev/null || true

          if [ "${{ steps.detect.outputs.environment }}" == "preview" ]; then
            RESULT=$(wrangler pages deploy "$OUTPUT_DIR" --project-name="$PROJECT_NAME" --branch="pr-${{ steps.detect.outputs.pr_number }}" 2>&1)
          else
            RESULT=$(wrangler pages deploy "$OUTPUT_DIR" --project-name="$PROJECT_NAME" --branch=main 2>&1)
          fi

          DEPLOY_URL=$(echo "$RESULT" | grep -oP 'https://[^\s]+\.pages\.dev' | head -1 || echo "")
          echo "url=$DEPLOY_URL" >> $GITHUB_OUTPUT
          echo "success=true" >> $GITHUB_OUTPUT

      # ============ CLOUDFLARE WORKERS DEPLOYMENT ============
      - name: Deploy to Cloudflare Workers
        if: steps.detect.outputs.platform == 'cloudflare-workers' && env.CLOUDFLARE_API_TOKEN != ''
        id: cloudflare-workers
        run: |
          npm install -g wrangler
          if [ "${{ steps.detect.outputs.environment }}" == "preview" ]; then
            RESULT=$(wrangler deploy --env preview 2>&1 || wrangler deploy 2>&1)
          else
            RESULT=$(wrangler deploy 2>&1)
          fi
          DEPLOY_URL=$(echo "$RESULT" | grep -oP 'https://[^\s]+\.workers\.dev' | head -1 || echo "")
          echo "url=$DEPLOY_URL" >> $GITHUB_OUTPUT
          echo "success=true" >> $GITHUB_OUTPUT

      # ============ COMMENT ON PR ============
      - name: Comment Deployment URL on PR
        if: github.event_name == 'pull_request' && (steps.railway.outputs.success == 'true' || steps.cloudflare-pages.outputs.success == 'true' || steps.cloudflare-workers.outputs.success == 'true')
        uses: actions/github-script@v7
        with:
          script: |
            const railwayUrl = '${{ steps.railway.outputs.url }}';
            const pagesUrl = '${{ steps.cloudflare-pages.outputs.url }}';
            const workersUrl = '${{ steps.cloudflare-workers.outputs.url }}';
            const platform = '${{ steps.detect.outputs.platform }}';
            const deployUrl = railwayUrl || pagesUrl || workersUrl || 'Deployment in progress...';

            const platformEmoji = { 'railway': '🚂', 'cloudflare-pages': '📄', 'cloudflare-workers': '⚡' };

            const body = `## ${platformEmoji[platform] || '🚀'} Preview Deployment Ready!

            | Platform | URL |
            |----------|-----|
            | **${platform}** | ${deployUrl ? `[${deployUrl}](${deployUrl})` : 'Deploying...'} |

            ---
            🤖 *Auto-deployed by BlackRoad OS*`;

            const { data: comments } = await github.rest.issues.listComments({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
            });

            const botComment = comments.find(c => c.body.includes('Preview Deployment Ready'));

            if (botComment) {
              await github.rest.issues.updateComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                comment_id: botComment.id,
                body: body
              });
            } else {
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: context.issue.number,
                body: body
              });
            }