name: CI

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

concurrency:
  group: ci-${{ github.ref }}
  cancel-in-progress: true

permissions:
  contents: write
  packages: write

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: cartsnitch/cartsnitch
  AUTH_IMAGE_NAME: cartsnitch/auth

jobs:
  lint:
    runs-on: runners-cartsnitch
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version: "20"
          cache: npm
      - run: npm ci
      - name: ESLint
        run: npx eslint .
      - name: Type check
        run: npx tsc --noEmit

  test:
    runs-on: runners-cartsnitch
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version: "20"
          cache: npm
      - run: npm ci
      - name: Run tests
        run: npx vitest run

  build-and-push:
    runs-on: runners-cartsnitch
    needs: [lint, test]
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Generate CalVer tag
        id: calver
        if: github.event_name == 'push' && github.ref == 'refs/heads/main'
        run: |
          DATE_TAG=$(date -u +%Y.%m.%d)
          EXISTING=$(git tag -l "v${DATE_TAG}*" | sort -V | tail -1)
          if [ -z "$EXISTING" ]; then
            VERSION="$DATE_TAG"
          elif [ "$EXISTING" = "v${DATE_TAG}" ]; then
            VERSION="${DATE_TAG}.2"
          else
            BUILD_NUM=$(echo "$EXISTING" | sed "s/v${DATE_TAG}\.//")
            VERSION="${DATE_TAG}.$((BUILD_NUM + 1))"
          fi
          echo "version=$VERSION" >> "$GITHUB_OUTPUT"
          echo "CalVer tag: $VERSION"

      - name: Log in to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Log in to GHCR
        if: github.event_name == 'push' && github.ref == 'refs/heads/main'
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=sha,prefix=sha-
            type=raw,value=${{ steps.calver.outputs.version }},enable=${{ github.ref == 'refs/heads/main' }}
            type=raw,value=latest,enable=${{ github.ref == 'refs/heads/main' }}

      - name: Build and push Docker image
        uses: docker/build-push-action@v6
        with:
          context: .
          push: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          target: prod

      - name: Create git tag
        if: github.event_name == 'push' && github.ref == 'refs/heads/main'
        run: |
          git tag "v${{ steps.calver.outputs.version }}"
          git push origin "v${{ steps.calver.outputs.version }}"

  build-and-push-auth:
    runs-on: runners-cartsnitch
    needs: [lint, test]
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Generate CalVer tag
        id: calver
        if: github.event_name == 'push' && github.ref == 'refs/heads/main'
        run: |
          DATE_TAG=$(date -u +%Y.%m.%d)
          EXISTING=$(git tag -l "v${DATE_TAG}*" | sort -V | tail -1)
          if [ -z "$EXISTING" ]; then
            VERSION="$DATE_TAG"
          elif [ "$EXISTING" = "v${DATE_TAG}" ]; then
            VERSION="${DATE_TAG}.2"
          else
            BUILD_NUM=$(echo "$EXISTING" | sed "s/v${DATE_TAG}\.//")
            VERSION="${DATE_TAG}.$((BUILD_NUM + 1))"
          fi
          echo "version=$VERSION" >> "$GITHUB_OUTPUT"

      - name: Log in to GHCR
        if: github.event_name == 'push' && github.ref == 'refs/heads/main'
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata (auth)
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.AUTH_IMAGE_NAME }}
          tags: |
            type=sha,prefix=sha-
            type=raw,value=${{ steps.calver.outputs.version }},enable=${{ github.ref == 'refs/heads/main' }}
            type=raw,value=latest,enable=${{ github.ref == 'refs/heads/main' }}

      - name: Build and push auth Docker image
        uses: docker/build-push-action@v6
        with:
          context: ./auth
          file: ./auth/Dockerfile
          push: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}

  deploy-dev:
    runs-on: runners-cartsnitch
    needs: [build-and-push, build-and-push-auth]
    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
    steps:
      - name: Checkout infra repo
        uses: actions/checkout@v4
        with:
          repository: cartsnitch/infra
          path: infra
          token: ${{ secrets.GITHUB_TOKEN }}

      - name: Install kubectl
        uses: azure/setup-kubectl@v4

      - name: Install kustomize
        uses: imranismail/setup-kustomize@v2

      - name: Update dev overlay image tag
        run: |
          cd infra
          kustomize edit set image \
            ghcr.io/cartsnitch/cartsnitch=cartsnitch/cartsnitch:${{ github.sha }} \
            ghcr.io/cartsnitch/auth=cartsnitch/auth:${{ github.sha }}

      - name: Commit and push
        run: |
          cd infra
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git add apps/overlays/dev/kustomization.yaml
          git diff --staged --quiet || git commit -m "chore: update dev image tags to ${{ github.sha }}"
          git push