name: Build & Release

on:
  push:
    branches: [master, main]
    tags: ['v*']
  pull_request:
    branches: [master, main]

env:
  REGISTRY: git.necloud.us
  OWNER: nate
  REPO: cloudlink

jobs:
  # ─── Docker: Backend ────────────────────────────────────────────────────────
  build-backend:
    name: Docker / backend
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - uses: docker/setup-buildx-action@v3

      - name: Log in to registry
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ secrets.REGISTRY_USER }}
          password: ${{ secrets.REGISTRY_TOKEN }}

      - uses: docker/build-push-action@v5
        with:
          context: ./backend
          file: ./backend/Dockerfile
          push: ${{ github.event_name != 'pull_request' }}
          tags: |
            ${{ env.REGISTRY }}/${{ env.OWNER }}/${{ env.REPO }}/backend:latest
            ${{ env.REGISTRY }}/${{ env.OWNER }}/${{ env.REPO }}/backend:${{ github.sha }}
          cache-from: type=registry,ref=${{ env.REGISTRY }}/${{ env.OWNER }}/${{ env.REPO }}/backend:cache
          cache-to: type=registry,ref=${{ env.REGISTRY }}/${{ env.OWNER }}/${{ env.REPO }}/backend:cache,mode=max

  # ─── Docker: Frontend ───────────────────────────────────────────────────────
  build-frontend:
    name: Docker / frontend
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - uses: docker/setup-buildx-action@v3

      - name: Log in to registry
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ secrets.REGISTRY_USER }}
          password: ${{ secrets.REGISTRY_TOKEN }}

      - uses: docker/build-push-action@v5
        with:
          context: ./frontend
          file: ./frontend/Dockerfile
          push: ${{ github.event_name != 'pull_request' }}
          build-args: |
            VITE_API_URL=/api
            VITE_WS_URL=/ws
          tags: |
            ${{ env.REGISTRY }}/${{ env.OWNER }}/${{ env.REPO }}/frontend:latest
            ${{ env.REGISTRY }}/${{ env.OWNER }}/${{ env.REPO }}/frontend:${{ github.sha }}
          cache-from: type=registry,ref=${{ env.REGISTRY }}/${{ env.OWNER }}/${{ env.REPO }}/frontend:cache
          cache-to: type=registry,ref=${{ env.REGISTRY }}/${{ env.OWNER }}/${{ env.REPO }}/frontend:cache,mode=max

  # ─── Desktop installers (Linux + Windows, built on Linux runner) ─────────────
  build-desktop:
    name: Desktop / Linux & Windows
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-node@v4
        with:
          node-version: '20'
          cache: 'npm'
          cache-dependency-path: desktop/package-lock.json

      - name: Install desktop dependencies
        working-directory: desktop
        run: npm ci

      - name: Install Wine (Windows cross-compile)
        run: |
          sudo dpkg --add-architecture i386
          sudo apt-get update -q
          sudo apt-get install -y --no-install-recommends wine wine32 wine64

      - name: Build Linux AppImage
        working-directory: desktop
        run: npx electron-builder --linux AppImage --x64 --publish never

      - name: Build Windows NSIS installer
        working-directory: desktop
        run: npx electron-builder --win nsis --x64 --publish never

      - uses: actions/upload-artifact@v3
        with:
          name: desktop-linux-windows-${{ github.sha }}
          path: |
            desktop/dist/*.AppImage
            desktop/dist/*.exe
          if-no-files-found: warn
          retention-days: 30

  # ─── Deploy (on push to master only, not PRs or tags) ───────────────────────
  deploy:
    name: Deploy to server
    runs-on: ubuntu-latest
    needs: [build-backend, build-frontend]
    if: github.event_name == 'push' && (github.ref == 'refs/heads/master' || github.ref == 'refs/heads/main')
    steps:
      - name: SSH deploy
        uses: appleboy/ssh-action@v1
        with:
          host: ${{ secrets.DEPLOY_HOST }}
          username: ${{ secrets.DEPLOY_USER }}
          key: ${{ secrets.DEPLOY_SSH_KEY }}
          script: |
            cd ${{ secrets.DEPLOY_PATH }}
            echo "${{ secrets.REGISTRY_TOKEN }}" | docker login git.necloud.us -u "${{ secrets.REGISTRY_USER }}" --password-stdin
            docker compose pull backend frontend
            docker compose up -d --no-build backend frontend
            docker logout git.necloud.us
            docker image prune -f

  # ─── Release (only on v* tags) ───────────────────────────────────────────────
  release:
    name: Create release
    runs-on: ubuntu-latest
    needs: [build-desktop, build-backend, build-frontend]
    if: startsWith(github.ref, 'refs/tags/v')
    steps:
      - name: Download desktop artifacts
        uses: actions/download-artifact@v3
        with:
          name: desktop-linux-windows-${{ github.sha }}
          path: ./release-assets

      - name: Publish Gitea release
        env:
          GITEA_TOKEN: ${{ secrets.REGISTRY_TOKEN }}
          TAG: ${{ github.ref_name }}
          SHA: ${{ github.sha }}
        run: |
          # Create the release
          RELEASE=$(curl -sf -X POST \
            -H "Authorization: token $GITEA_TOKEN" \
            -H "Content-Type: application/json" \
            "https://git.necloud.us/api/v1/repos/nate/cloudlink/releases" \
            -d "{\"tag_name\":\"$TAG\",\"name\":\"CloudLink $TAG\",\"body\":\"Docker images pushed to registry. Desktop installers attached below.\"}")

          RELEASE_ID=$(echo "$RELEASE" | python3 -c "import sys,json; print(json.load(sys.stdin)['id'])")
          echo "Release ID: $RELEASE_ID"

          # Upload each installer as a release asset
          for file in ./release-assets/*; do
            NAME=$(basename "$file")
            echo "Uploading $NAME..."
            curl -sf -X POST \
              -H "Authorization: token $GITEA_TOKEN" \
              -H "Content-Type: application/octet-stream" \
              "https://git.necloud.us/api/v1/repos/nate/cloudlink/releases/$RELEASE_ID/assets?name=$NAME" \
              --data-binary @"$file"
          done