name: Laravel CI-CD

on:
  push:
    branches: ["main"]

env:
  REGISTRY: gitea.leonmorival.com
  IMAGE_NAME: daily_meal/bemeal-api

jobs:

  # =========================
  # TESTS
  # =========================
  test:
    name: Tests Unitaires
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Run Tests
        uses: docker://laravelsail/php84-composer:latest
        env:
          APP_ENV: testing
          APP_KEY: base64:AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
          DB_CONNECTION: sqlite
          DB_DATABASE: ":memory:"
        with:
          args: |
            bash -c "composer install --no-interaction --ignore-platform-req=ext-intl && php artisan test"

  # =========================
  # BUILD & PUSH IMAGE
  # =========================
  build:
    name: Build & Push Docker
    needs: test
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Login to Gitea Registry
        run: |
          echo "${{ secrets.TOKEN_GITEA }}" \
          | docker login $REGISTRY \
          -u "${{ github.actor }}" \
          --password-stdin

      - name: Build Docker image
        run: |
          IMAGE=$REGISTRY/$IMAGE_NAME
          docker build -t "$IMAGE:${{ github.sha }}" -t "$IMAGE:latest" .
          docker push "$IMAGE:${{ github.sha }}"
          docker push "$IMAGE:latest"


  # =========================
  # DEPLOY
  # =========================
  deploy:
    name: Deploy Blue/Green
    needs: build
    runs-on: ubuntu-latest

    steps:
      - name: Checkout deploy files
        uses: actions/checkout@v4

      - name: Upload Docker Compose file
        uses: appleboy/scp-action@v0.1.7
        with:
          host: ${{ secrets.SSH_HOST }}
          username: ${{ secrets.SSH_USER }}
          key: ${{ secrets.SSH_PRIVATE_KEY }}
          source: docker-compose.prod.yml,docker/nginx/*
          target: ${{ secrets.DEPLOY_PATH || '/opt/bemeal' }}

      - name: Deploy via SSH (Blue/Green)
        uses: appleboy/ssh-action@v1.0.3
        env:
          IMAGE_TAG: ${{ github.sha }}
          DEPLOY_PATH: ${{ secrets.DEPLOY_PATH }}
          NGINX_CONTAINER: ${{ secrets.NGINX_CONTAINER }}
          NGINX_UPSTREAM_FILE: ${{ secrets.NGINX_UPSTREAM_FILE }}
        with:
          host: ${{ secrets.SSH_HOST }}
          username: ${{ secrets.SSH_USER }}
          key: ${{ secrets.SSH_PRIVATE_KEY }}
          envs: REGISTRY,IMAGE_NAME,IMAGE_TAG,DEPLOY_PATH,NGINX_CONTAINER,NGINX_UPSTREAM_FILE
          script: |
            set -eu

            APP_DIR="${DEPLOY_PATH:-/opt/bemeal}"
            COMPOSE_FILE="docker-compose.prod.yml"
            COMPOSE_ENV_FILE=".env.prod"
            NGINX_CONTAINER="${NGINX_CONTAINER:-nginx}"
            NGINX_UPSTREAM_FILE="${NGINX_UPSTREAM_FILE:-/etc/nginx/conf.d/bemeal-upstream.inc}"
            DRAIN_SECONDS="${DRAIN_SECONDS:-20}"

            if [ ! -d "$APP_DIR" ]; then
              echo "Missing deploy directory: $APP_DIR"
              echo "Set the DEPLOY_PATH secret to the directory containing $COMPOSE_FILE."
              exit 1
            fi

            cd "$APP_DIR"

            if [ ! -f "$COMPOSE_FILE" ]; then
              echo "Missing $APP_DIR/$COMPOSE_FILE"
              echo "Set the DEPLOY_PATH secret to the directory containing $COMPOSE_FILE, or copy the compose file there."
              exit 1
            fi

            if ! docker inspect "$NGINX_CONTAINER" >/dev/null 2>&1; then
              echo "Missing Nginx container: $NGINX_CONTAINER"
              echo "Set the NGINX_CONTAINER secret to your reverse proxy container name."
              exit 1
            fi

            if [ -f "$COMPOSE_ENV_FILE" ]; then
              COMPOSE="docker compose --env-file $COMPOSE_ENV_FILE -f $COMPOSE_FILE"
            else
              COMPOSE="docker compose -f $COMPOSE_FILE"
            fi

            IMAGE="$REGISTRY/$IMAGE_NAME:$IMAGE_TAG"
            export IMAGE_TAG

            echo "Pull image $IMAGE"
            docker pull "$IMAGE"

            echo "Ensure shared services are running"
            $COMPOSE up -d pgsql redis meilisearch

            ACTIVE=""
            if docker exec "$NGINX_CONTAINER" sh -c "test -f '$NGINX_UPSTREAM_FILE' && grep -q 'bemeal-api-blue:80' '$NGINX_UPSTREAM_FILE'" 2>/dev/null; then
              ACTIVE="blue"
            elif docker exec "$NGINX_CONTAINER" sh -c "test -f '$NGINX_UPSTREAM_FILE' && grep -q 'bemeal-api-green:80' '$NGINX_UPSTREAM_FILE'" 2>/dev/null; then
              ACTIVE="green"
            fi

            if [ "$ACTIVE" = "blue" ]; then
              TARGET="green"
              TARGET_HOST="bemeal-api-green"
            else
              TARGET="blue"
              TARGET_HOST="bemeal-api-blue"
            fi

            TARGET_SERVICE="bemeal-api-$TARGET"

            echo "Start $TARGET_SERVICE"
            $COMPOSE up -d --force-recreate --no-deps "$TARGET_SERVICE"

            echo "Wait for $TARGET_SERVICE healthcheck"
            HEALTH_STATUS=""
            for attempt in $(seq 1 60); do
              HEALTH_STATUS="$(docker inspect --format='{{if .State.Health}}{{.State.Health.Status}}{{else}}{{.State.Status}}{{end}}' "$TARGET_SERVICE" 2>/dev/null || true)"

              if [ "$HEALTH_STATUS" = "healthy" ]; then
                break
              fi

              sleep 2
            done

            if [ "$HEALTH_STATUS" != "healthy" ]; then
              docker logs --tail=200 "$TARGET_SERVICE" || true
              exit 1
            fi

            docker exec "$TARGET_SERVICE" wget -qO- http://127.0.0.1/api/health >/dev/null

            NGINX_UPSTREAM_DIR="$(dirname "$NGINX_UPSTREAM_FILE")"
            docker exec "$NGINX_CONTAINER" sh -c "mkdir -p '$NGINX_UPSTREAM_DIR'"
            docker exec "$NGINX_CONTAINER" sh -c "test ! -f '$NGINX_UPSTREAM_FILE' || cp '$NGINX_UPSTREAM_FILE' '$NGINX_UPSTREAM_FILE.bak'"

            printf '%s\n' \
              'upstream bemeal_api {' \
              "    server $TARGET_HOST:80 max_fails=3 fail_timeout=10s;" \
              '    keepalive 32;' \
              '}' | docker exec -i "$NGINX_CONTAINER" sh -c "cat > '$NGINX_UPSTREAM_FILE'"

            if ! docker exec "$NGINX_CONTAINER" nginx -t; then
              if docker exec "$NGINX_CONTAINER" sh -c "test -f '$NGINX_UPSTREAM_FILE.bak'" 2>/dev/null; then
                docker exec "$NGINX_CONTAINER" sh -c "mv '$NGINX_UPSTREAM_FILE.bak' '$NGINX_UPSTREAM_FILE'"
              fi

              exit 1
            fi

            echo "Switch Nginx traffic to $TARGET"
            docker exec "$NGINX_CONTAINER" nginx -s reload
            docker exec "$NGINX_CONTAINER" rm -f "$NGINX_UPSTREAM_FILE.bak"

            echo "Restart workers on the new image"
            $COMPOSE up -d --force-recreate --no-deps horizon scheduler

            if [ -n "$ACTIVE" ] && [ "$ACTIVE" != "$TARGET" ]; then
              echo "Drain old $ACTIVE service for $DRAIN_SECONDS seconds"
              sleep "$DRAIN_SECONDS"
              $COMPOSE stop "bemeal-api-$ACTIVE" || true
              $COMPOSE rm -f "bemeal-api-$ACTIVE" || true
            fi