name: Build Backend

on:
  push:
    branches:
      - master
      - dev
  pull_request:
    branches:
      - master
      - dev

env:
  GO_VERSION: '1.25'

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set up Go
        uses: actions/setup-go@v5
        with:
          go-version: ${{ env.GO_VERSION }}
          cache: true

      - name: Go cache info
        run: |
          echo "Go cache directory:"
          go env GOCACHE
          echo "Go module cache directory:"
          go env GOMODCACHE

      - name: Install build tools
        run: sudo apt-get update && sudo apt-get install -y gcc

      - name: Download dependencies
        run: go mod download

      - name: Build
        env:
          GOOS: linux
          GOARCH: amd64
          CGO_ENABLED: 1
        run: go build -v -o server ./cmd/server

      - name: Upload artifacts
        uses: actions/upload-artifact@v3
        with:
          name: backend-server-linux-amd64
          path: server

  build-docker:
    runs-on: ubuntu-latest
    needs: build
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Login to Gitea Container Registry
        uses: docker/login-action@v3
        with:
          registry: code.littlelan.cn
          username: ${{ secrets.GIT_USERNAME }}
          password: ${{ secrets.GIT_TOKEN }}

      - name: Download artifact
        uses: actions/download-artifact@v3
        with:
          name: backend-server-linux-amd64

      - name: Ensure binary executable
        run: chmod +x ./server

      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          context: .
          push: true
          tags: |
            code.littlelan.cn/carrot_bbs/backend:latest
            code.littlelan.cn/carrot_bbs/backend:${{ github.sha }}
          platforms: linux/amd64
          cache-from: type=registry,ref=code.littlelan.cn/carrot_bbs/backend:buildcache
          cache-to: type=registry,ref=code.littlelan.cn/carrot_bbs/backend:buildcache,mode=max