api.yml

name: API
on:
  pull_request:
    paths:
      - .github/workflows/api.yml
      - backend/api/dockerfile
      - backend/api/**/*.go
      - backend/api/**/*.mod
      - backend/api/**/*.sum
  push:
    branches:
      - 'main'
    paths:
      - .github/workflows/api.yml
      - backend/api/dockerfile
      - backend/api/**/*.go
      - backend/api/**/*.mod
      - backend/api/**/*.sum
    tags:
      - 'v*'

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: measure-sh/api

jobs:
  build:
    name: Build
    runs-on: ubuntu-latest
    strategy:
      matrix:
        go-version: ["1.22.x"]
    defaults:
      run:
        working-directory: backend/api
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
      - name: Setup go
        uses: actions/setup-go@v5
        with:
          go-version: ${{ matrix.go-version }}
          check-latest: true
          cache-dependency-path: backend/api/go.sum
      - name: Display go version
        run: go version
      - name: Install dependencies
        run: go get .
      - name: Build with ${{ matrix.go-version }}
        run: go build -v ./...

  test:
    name: Test
    runs-on: ubuntu-latest
    strategy:
      matrix:
        go-version: ["1.22.x"]
    defaults:
      run:
        working-directory: backend/api
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
      - name: Setup go
        uses: actions/setup-go@v5
        with:
          go-version: ${{ matrix.go-version }}
          check-latest: true
          cache-dependency-path: backend/api/go.sum
      - name: Display go version
        run: go version
      - name: Install dependencies
        run: go get .
      - name: Test with ${{ matrix.go-version }}
        run: go test ./...
  
  push:
    name: Build and push image
    runs-on: ubuntu-latest
    if: github.ref_type == 'tag' && startsWith(github.ref, 'refs/tags/v')
    needs: [build, test]
    permissions:
      contents: read
      packages: write
      attestations: write
      id-token: write
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Login to Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

      - name: Build and push OCI image
        id: push
        uses: docker/build-push-action@v6
        with:
          context: backend/api
          file: backend/api/dockerfile
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: |
            org.opencontainers.image.source=https://github.com/measure-sh/measure/tree/${{ github.ref_name }}/backend/api/dockerfile
            org.opencontainers.image.description=Measure API Server
            org.opencontainers.image.licenses=Apache-2.0

      - name: Generate artifact attestation
        uses: actions/attest-build-provenance@v1
        with:
          subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          subject-digest: ${{ steps.push.outputs.digest }}
          push-to-registry: true

  deploy:
    name: Deploy to fly.io
    if: github.ref == 'refs/heads/main'
    needs: [build, test]
    runs-on: ubuntu-latest
    defaults:
      run:
        working-directory: backend/api
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
      - name: Setup flyctl
        uses: superfly/flyctl-actions/setup-flyctl@master
      - name: Deploy to fly.io
        run: flyctl deploy --remote-only
        env:
          FLY_API_TOKEN: ${{ secrets.FLY_API_TOKEN }}