name: build

on:
  workflow_dispatch:
  pull_request:
    branches:
      - main
  push:
    branches:
      - main

jobs:
  container:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v2
      - name: Restore Go cache
        uses: actions/cache@v1
        with:
          path: ~/go/pkg/mod
          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
          restore-keys: |
            ${{ runner.os }}-go-
      - name: Setup Go
        uses: actions/setup-go@v2
        with:
          go-version: 1.15.x
      - name: Download modules
        run: |
          go mod download
          go install golang.org/x/tools/cmd/goimports
      - name: Run linters
        run: make test-fmt test-codegen
      - name: Run tests
        run: go test -race -coverprofile=coverage.txt -covermode=atomic $(go list ./pkg/...)
      - name: Check if working tree is dirty
        run: |
          if [[ $(git diff --stat) != '' ]]; then
            git --no-pager diff
            echo 'run make test and commit changes'
            exit 1
          fi
      - name: Upload coverage to Codecov
        uses: codecov/codecov-action@v1
        with:
          file: ./coverage.txt
      - name: Build container image
        run: docker build -t test/flagger:latest .