name: State Corp Backend CI/CD

on:
  push:
    branches:
      - dev
      # Add main only after the first manual main restore/rollback drill passes.
  pull_request:
    branches:
      - dev
      - main
  workflow_dispatch:

concurrency:
  group: state-corp-backend-${{ github.ref }}
  cancel-in-progress: false

env:
  PYTHON_VERSION: "3.11"
  REGISTRY_HOST: registry.dev.nii-ecos.ru
  REGISTRY_NAMESPACE: avm
  WEB_IMAGE: state-corp-backend-web
  CELERY_IMAGE: state-corp-backend-celery

jobs:
  quality:
    name: Quality gate
    runs-on: ubuntu-latest
    timeout-minutes: 30

    steps:
      - name: Checkout
        uses: actions/checkout@v4.2.2
        with:
          persist-credentials: false

      - name: Validate release client contract
        run: ./scripts/ci/release-service-test.sh

      - name: Install Python and uv
        run: |
          set -euo pipefail
          project_python_version="$(cat .python-version 2>/dev/null || printf '%s' "${PYTHON_VERSION}")"
          python_bin="$(./scripts/ensure-ci-python.sh "${project_python_version}")"
          printf 'PYTHON_BIN=%s\n' "${python_bin}" > .ci-python-env

      - name: Install dependencies
        run: |
          set -euo pipefail
          . ./.ci-python-env
          "${PYTHON_BIN}" -m venv .venv
          . .venv/bin/activate
          python -m pip install --upgrade pip uv
          uv sync \
            --dev \
            --frozen \
            --active \
            --python "${PYTHON_BIN}" \
            --no-managed-python \
            --no-python-downloads

      - name: Lint and formatting
        run: |
          set -euo pipefail
          . .venv/bin/activate
          ruff check src tests scripts
          ruff format src tests scripts --check

      - name: Tests
        env:
          DJANGO_SETTINGS_MODULE: settings.test
          SECRET_KEY: test-secret-key-for-ci
        run: |
          set -euo pipefail
          export PYTHONPATH="${PWD}/src:${PYTHONPATH:-}"
          .venv/bin/python -m pytest tests -q

  build:
    name: Build linux/amd64 images once
    runs-on: [backend-docker]
    timeout-minutes: 60
    needs: [quality]
    if: >-
      github.event_name != 'pull_request' &&
      (github.ref == 'refs/heads/dev' || github.ref == 'refs/heads/main')
    outputs:
      celery_ref: ${{ steps.image_refs.outputs.celery_ref }}
      celery_tag_ref: ${{ steps.image_refs.outputs.celery_tag_ref }}
      run_id: ${{ steps.image_refs.outputs.run_id }}
      web_ref: ${{ steps.image_refs.outputs.web_ref }}
      web_tag_ref: ${{ steps.image_refs.outputs.web_tag_ref }}

    steps:
      - name: Checkout
        uses: actions/checkout@v4.2.2
        with:
          persist-credentials: false

      - name: Validate registry credentials
        env:
          REGISTRY_PASSWORD: ${{ secrets.REGISTRY_PASSWORD }}
          REGISTRY_USERNAME: ${{ secrets.REGISTRY_USERNAME }}
        run: |
          set -euo pipefail
          [ -n "${REGISTRY_USERNAME:-}" ] || {
            echo 'Registry username is not configured.' >&2
            exit 1
          }
          [ -n "${REGISTRY_PASSWORD:-}" ] || {
            echo 'Registry password/token is not configured.' >&2
            exit 1
          }

      - name: Prepare Buildx
        run: |
          set -euo pipefail
          builder_name="state-corp-backend-${GITHUB_RUN_ID:-local}-${GITHUB_RUN_ATTEMPT:-1}"
          docker buildx create \
            --driver docker-container \
            --name "${builder_name}" \
            --use
          docker buildx inspect --bootstrap
          printf 'BUILDER_NAME=%s\n' "${builder_name}" >> "${GITHUB_ENV}"

      - name: Build and push immutable images
        id: image_refs
        env:
          REGISTRY_PASSWORD: ${{ secrets.REGISTRY_PASSWORD }}
          REGISTRY_USERNAME: ${{ secrets.REGISTRY_USERNAME }}
        run: |
          set -euo pipefail

          registry_path="${REGISTRY_HOST}/${REGISTRY_NAMESPACE}"
          web_image="${registry_path}/${WEB_IMAGE}"
          celery_image="${registry_path}/${CELERY_IMAGE}"
          short_sha="$(printf '%s' "${GITHUB_SHA}" | cut -c1-12)"
          branch="${GITHUB_REF_NAME}"
          immutable_tag="${branch}-${short_sha}"
          build_time="$(date -u +%Y-%m-%dT%H:%M:%SZ)"

          printf '%s' "${REGISTRY_PASSWORD}" \
            | docker login "${REGISTRY_HOST}" \
              --username "${REGISTRY_USERNAME}" \
              --password-stdin

          docker buildx build \
            --platform linux/amd64 \
            --file ./docker/Dockerfile \
            --target runtime-web \
            --build-arg INSTALL_DEV=false \
            --label "org.opencontainers.image.revision=${GITHUB_SHA}" \
            --label "org.opencontainers.image.source=${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}" \
            --label "org.opencontainers.image.created=${build_time}" \
            --tag "${web_image}:${immutable_tag}" \
            --metadata-file web-metadata.json \
            --push \
            .

          docker buildx build \
            --platform linux/amd64 \
            --file ./docker/Dockerfile \
            --target runtime-celery \
            --build-arg INSTALL_DEV=false \
            --label "org.opencontainers.image.revision=${GITHUB_SHA}" \
            --label "org.opencontainers.image.source=${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}" \
            --label "org.opencontainers.image.created=${build_time}" \
            --tag "${celery_image}:${immutable_tag}" \
            --metadata-file celery-metadata.json \
            --push \
            .

          metadata_digest() {
            sed -n \
              's/^[[:space:]]*"containerimage.digest":[[:space:]]*"\([^"]*\)".*/\1/p' \
              "$1" \
              | head -n 1
          }

          web_digest="$(metadata_digest web-metadata.json)"
          celery_digest="$(metadata_digest celery-metadata.json)"
          digest_pattern='^sha256:[a-f0-9]{64}$'
          [[ "${web_digest}" =~ ${digest_pattern} ]] || {
            echo 'Buildx did not return a valid web image digest.' >&2
            exit 1
          }
          [[ "${celery_digest}" =~ ${digest_pattern} ]] || {
            echo 'Buildx did not return a valid Celery image digest.' >&2
            exit 1
          }

          release_run_id="${GITHUB_RUN_ID:-${GITHUB_SHA}}-${GITHUB_RUN_ATTEMPT:-1}"
          {
            printf 'web_ref=%s@%s\n' "${web_image}" "${web_digest}"
            printf 'celery_ref=%s@%s\n' "${celery_image}" "${celery_digest}"
            printf 'web_tag_ref=%s:%s\n' "${web_image}" "${immutable_tag}"
            printf 'celery_tag_ref=%s:%s\n' "${celery_image}" "${immutable_tag}"
            printf 'run_id=%s\n' "${release_run_id}"
          } >> "${GITHUB_OUTPUT}"

      - name: Remove Buildx builder
        if: always()
        run: |
          if [ -n "${BUILDER_NAME:-}" ]; then
            docker buildx rm "${BUILDER_NAME}" || true
          fi

  deploy_dev:
    name: Release dev
    runs-on: [backend-docker]
    timeout-minutes: 20
    needs: [build]
    if: needs.build.result == 'success' && github.ref == 'refs/heads/dev'

    steps:
      - name: Checkout
        uses: actions/checkout@v4.2.2
        with:
          persist-credentials: false

      - name: Release exact images
        env:
          RELEASE_HOST: ${{ secrets.DEPLOY_HOST }}
          RELEASE_KNOWN_HOSTS_B64: ${{ secrets.INTERNAL_KNOWN_HOSTS_B64 }}
          RELEASE_SERVICE_PATH: /opt/ecos-dev/release-service
          RELEASE_SSH_KEY_B64: ${{ secrets.INTERNAL_DEPLOY_SSH_KEY_B64 }}
          RELEASE_USER: ${{ secrets.DEPLOY_USER }}
        run: |
          ./scripts/ci/release-service.sh \
            state-corp-backend \
            "${{ needs.build.outputs.run_id }}" \
            "${{ needs.build.outputs.web_ref }}" \
            "${{ needs.build.outputs.celery_ref }}"

      - name: Smoke dev backend
        env:
          APP_BASE_URL: ${{ secrets.APP_BASE_URL }}
        run: ./scripts/ci/smoke.sh "${APP_BASE_URL%/}/health/ready/"

  deploy_main_internal:
    name: Refresh and release internal main
    runs-on: [backend-docker]
    timeout-minutes: 60
    needs: [build]
    if: needs.build.result == 'success' && github.ref == 'refs/heads/main'

    steps:
      - name: Checkout
        uses: actions/checkout@v4.2.2
        with:
          persist-credentials: false

      - name: Refresh cloned data and release exact images
        env:
          RELEASE_HOST: ${{ secrets.MAIN_DEPLOY_HOST }}
          RELEASE_KNOWN_HOSTS_B64: ${{ secrets.INTERNAL_KNOWN_HOSTS_B64 }}
          RELEASE_SERVICE_PATH: /opt/ecos-main/release-service
          RELEASE_SSH_KEY_B64: ${{ secrets.INTERNAL_DEPLOY_SSH_KEY_B64 }}
          RELEASE_USER: ${{ secrets.DEPLOY_USER }}
        run: |
          ./scripts/ci/release-service.sh \
            state-corp-backend \
            "${{ needs.build.outputs.run_id }}" \
            "${{ needs.build.outputs.web_ref }}" \
            "${{ needs.build.outputs.celery_ref }}" \
            --refresh-data

      - name: Smoke internal main backend
        env:
          INTERNAL_MAIN_STATE_CORP_BACKEND_URL: ${{ secrets.INTERNAL_MAIN_STATE_CORP_BACKEND_URL }}
        run: ./scripts/ci/smoke.sh "${INTERNAL_MAIN_STATE_CORP_BACKEND_URL%/}/health/ready/"

  deploy_main_customer:
    name: Release customer main
    runs-on: [backend-docker]
    timeout-minutes: 30
    needs: [build, deploy_main_internal]
    if: >-
      needs.build.result == 'success' &&
      needs.deploy_main_internal.result == 'success' &&
      github.ref == 'refs/heads/main'

    steps:
      - name: Checkout
        uses: actions/checkout@v4.2.2
        with:
          persist-credentials: false

      - name: Release the same exact images without refresh
        env:
          RELEASE_HOST: 10.0.10.174
          RELEASE_KNOWN_HOSTS_B64: ${{ secrets.CUSTOMER_KNOWN_HOSTS_B64 }}
          RELEASE_PROXY: ecos-proxy@10.10.0.121
          RELEASE_SERVICE_PATH: /ecos/release-service
          RELEASE_SSH_KEY_B64: ${{ secrets.CUSTOMER_DEPLOY_SSH_KEY_B64 }}
          RELEASE_USER: ecos
        run: |
          ./scripts/ci/release-service.sh \
            state-corp-backend \
            "${{ needs.build.outputs.run_id }}" \
            "${{ needs.build.outputs.web_ref }}" \
            "${{ needs.build.outputs.celery_ref }}"