name: CI

on:
  push:
    branches: [main, dev, uat]
  pull_request:
    branches: [main, dev, uat]

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

permissions:
  contents: write
  packages: write

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: cartsnitch/receiptwitness

jobs:
  lint:
    runs-on: runners-cartsnitch
    steps:
      - uses: actions/checkout@v4
      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.12"
      - name: Install dependencies
        run: pip install ruff
      - name: Lint
        run: ruff check src/ tests/

  test:
    runs-on: runners-cartsnitch
    steps:
      - uses: actions/checkout@v4
      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.12"
      - name: Install dependencies
        run: pip install -e ".[dev]"
      - name: Run tests
        run: pytest tests/ -v

  build-and-push:
    runs-on: runners-cartsnitch
    if: github.event_name == 'push'
    needs: [lint, test]
    outputs:
      calver_tag: ${{ steps.calver.outputs.version }}
      sha_tag: sha-${{ github.sha }}
    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 GHCR
        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-,format=long
            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
        uses: docker/build-push-action@v6
        with:
          context: .
          push: ${{ github.event_name == 'push' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          build-args: APT_CACHE_BUST=${{ github.run_id }}

      - 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 }}"

  grype:
    runs-on: runners-cartsnitch
    needs: [build-and-push]
    if: github.event_name == 'push'
    steps:
      - uses: actions/checkout@v4
      - name: Run Grype vulnerability scan
        uses: anchore/sbom-action@v0
        with:
          image: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:sha-${{ github.sha }}
          format: spdx-json
          output-file: sbom.spdx.json
      - name: Upload SBOM
        uses: actions/upload-artifact@v4
        with:
          name: sbom
          path: sbom.spdx.json
      - name: Run Grype
        uses: anchore/grype-action@v1
        with:
          sbom: sbom.spdx.json
          fail-on: high
          ignore-file: .grype.yaml

  deploy-dev:
    runs-on: runners-cartsnitch
    needs: [grype]
    if: always() && !cancelled() && github.event_name == 'push' && github.ref == 'refs/heads/dev'
    steps:
      - name: Generate GitHub App token
        id: app-token
        uses: actions/create-github-app-token@v1
        with:
          app-id: ${{ secrets.CARTSNITCH_APP_ID }}
          private-key: ${{ secrets.CARTSNITCH_APP_PRIVATE_KEY }}
          owner: ${{ github.repository_owner }}
          repositories: infra

      - name: Checkout infra repo
        uses: actions/checkout@v4
        with:
          repository: cartsnitch/infra
          token: ${{ steps.app-token.outputs.token }}
          ref: main
          path: infra

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

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

      - name: Update receiptwitness image tag
        run: |
          cd infra/apps/overlays/dev
          kustomize edit set image ghcr.io/cartsnitch/receiptwitness:sha-${{ github.sha }}

      - name: Commit and push to infra
        run: |
          cd infra
          git config user.name "cartsnitch-ci[bot]"
          git config user.email "cartsnitch-ci[bot]@users.noreply.github.com"
          git add apps/overlays/dev/kustomization.yaml
          git commit -m "ci(dev): update receiptwitness to sha-${{ github.sha }}"
          git pull --rebase origin main
          git push origin main

  deploy-uat:
    runs-on: runners-cartsnitch
    needs: [grype]
    if: always() && !cancelled() && github.event_name == 'push' && github.ref == 'refs/heads/uat'
    steps:
      - name: Generate GitHub App token
        id: app-token
        uses: actions/create-github-app-token@v1
        with:
          app-id: ${{ secrets.CARTSNITCH_APP_ID }}
          private-key: ${{ secrets.CARTSNITCH_APP_PRIVATE_KEY }}
          owner: ${{ github.repository_owner }}
          repositories: infra

      - name: Checkout infra repo
        uses: actions/checkout@v4
        with:
          repository: cartsnitch/infra
          token: ${{ steps.app-token.outputs.token }}
          ref: main
          path: infra

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

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

      - name: Update receiptwitness image tag
        run: |
          cd infra/apps/overlays/uat
          kustomize edit set image ghcr.io/cartsnitch/receiptwitness:${{ needs.build-and-push.outputs.calver_tag }}

      - name: Commit and push to infra
        run: |
          cd infra
          git config user.name "cartsnitch-ci[bot]"
          git config user.email "cartsnitch-ci[bot]@users.noreply.github.com"
          git add apps/overlays/uat/kustomization.yaml
          git commit -m "ci(uat): update receiptwitness to ${{ needs.build-and-push.outputs.calver_tag }}"
          git pull --rebase origin main
          git push origin main