name: Deploy

# Forgejo Actions equivalent of .github/workflows/deploy.yml
# Migration 2026-05-16: GitHub → Forgejo (git.gendsgn.ru)
# Builds images on Forgejo runner, pushes to ghcr.io (GitHub Container Registry),
# SSH-deploys to Beget VPS (46.173.16.127).
on:
  push:
    branches: [main]
    paths:
      - "backend/**"
      - "frontend/**"
      - "docker-compose.prod.yml"
      - "Caddyfile"
      - ".forgejo/workflows/deploy.yml"
      - "data/sql/*.sql"
  workflow_dispatch:

concurrency:
  group: deploy-prod
  cancel-in-progress: false

env:
  IMAGE_BACKEND: ghcr.io/lekss361/gendesign-backend
  IMAGE_WORKER: ghcr.io/lekss361/gendesign-worker
  IMAGE_FRONTEND: ghcr.io/lekss361/gendesign-frontend

jobs:
  changes:
    runs-on: ubuntu-latest
    outputs:
      backend: ${{ steps.filter.outputs.backend }}
      frontend: ${{ steps.filter.outputs.frontend }}
      infra: ${{ steps.filter.outputs.infra }}
    steps:
      - uses: actions/checkout@v4
      - uses: dorny/paths-filter@v3
        id: filter
        with:
          filters: |
            backend:
              - 'backend/**'
              - 'data/sql/**'
            frontend:
              - 'frontend/**'
            infra:
              - 'docker-compose.prod.yml'
              - 'Caddyfile'
              - '.forgejo/workflows/deploy.yml'

  build-backend:
    runs-on: ubuntu-latest
    needs: changes
    if: |
      needs.changes.outputs.backend == 'true' ||
      needs.changes.outputs.infra == 'true' ||
      github.event_name == 'workflow_dispatch'
    steps:
      - uses: actions/checkout@v4

      - name: Login to GHCR (shell-based — docker/login-action@v3 unreliable под Forgejo Actions)
        env:
          GHCR_PAT: ${{ secrets.GHCR_PAT }}
        run: |
          echo "$GHCR_PAT" | docker login ghcr.io -u lekss361 --password-stdin

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Build & push backend (lean — без Chromium)
        uses: docker/build-push-action@v6
        with:
          context: ./backend
          target: runner
          push: true
          cache-from: type=registry,ref=${{ env.IMAGE_BACKEND }}:buildcache
          cache-to: type=registry,ref=${{ env.IMAGE_BACKEND }}:buildcache,mode=max
          tags: |
            ${{ env.IMAGE_BACKEND }}:latest
            ${{ env.IMAGE_BACKEND }}:${{ github.sha }}

  build-worker:
    runs-on: ubuntu-latest
    needs: changes
    if: |
      needs.changes.outputs.backend == 'true' ||
      needs.changes.outputs.infra == 'true' ||
      github.event_name == 'workflow_dispatch'
    steps:
      - uses: actions/checkout@v4

      - name: Login to GHCR (shell-based — docker/login-action@v3 unreliable под Forgejo Actions)
        env:
          GHCR_PAT: ${{ secrets.GHCR_PAT }}
        run: |
          echo "$GHCR_PAT" | docker login ghcr.io -u lekss361 --password-stdin

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Build & push worker (с Chromium для Playwright)
        uses: docker/build-push-action@v6
        with:
          context: ./backend
          target: runner-with-chromium
          push: true
          cache-from: type=registry,ref=${{ env.IMAGE_WORKER }}:buildcache
          cache-to: type=registry,ref=${{ env.IMAGE_WORKER }}:buildcache,mode=max
          tags: |
            ${{ env.IMAGE_WORKER }}:latest
            ${{ env.IMAGE_WORKER }}:${{ github.sha }}

  build-frontend:
    runs-on: ubuntu-latest
    needs: changes
    if: |
      needs.changes.outputs.frontend == 'true' ||
      needs.changes.outputs.infra == 'true' ||
      github.event_name == 'workflow_dispatch'
    steps:
      - uses: actions/checkout@v4

      - name: Login to GHCR (shell-based — docker/login-action@v3 unreliable под Forgejo Actions)
        env:
          GHCR_PAT: ${{ secrets.GHCR_PAT }}
        run: |
          echo "$GHCR_PAT" | docker login ghcr.io -u lekss361 --password-stdin

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Build & push frontend
        uses: docker/build-push-action@v6
        with:
          context: ./frontend
          push: true
          cache-from: type=registry,ref=${{ env.IMAGE_FRONTEND }}:buildcache
          cache-to: type=registry,ref=${{ env.IMAGE_FRONTEND }}:buildcache,mode=max
          tags: |
            ${{ env.IMAGE_FRONTEND }}:latest
            ${{ env.IMAGE_FRONTEND }}:${{ github.sha }}

  deploy:
    runs-on: ubuntu-latest
    needs: [changes, build-backend, build-worker, build-frontend]
    if: |
      always() &&
      !cancelled() &&
      needs.build-backend.result != 'failure' &&
      needs.build-worker.result != 'failure' &&
      needs.build-frontend.result != 'failure'
    steps:
      - name: Deploy to VM via SSH
        uses: appleboy/ssh-action@v1.0.3
        env:
          IMAGE_TAG: latest
          SENTRY_RELEASE_VAL: ${{ github.sha }}
          GHCR_PAT: ${{ secrets.GHCR_PAT }}
        with:
          host: ${{ secrets.DEPLOY_HOST }}
          username: ${{ secrets.DEPLOY_USER }}
          key: ${{ secrets.DEPLOY_SSH_KEY }}
          port: ${{ secrets.DEPLOY_PORT }}
          envs: IMAGE_TAG,SENTRY_RELEASE_VAL,GHCR_PAT
          script: |
            set -euo pipefail
            cd /opt/gendesign

            # Sync compose / Caddyfile / init scripts from the repo.
            # Origin теперь Forgejo (после migration 2026-05-16) — HTTPS basic auth
            # через PAT в URL не нужен т.к. repo читается через deploy key (SSH)
            # ИЛИ public read-only mode. Forgejo gendesign — private, нужен auth:
            # `git remote get-url origin` должен указывать на Forgejo с auth.
            git fetch origin main
            git reset --hard origin/main

            # Sentry release tracking
            mkdir -p backend
            touch backend/.env.runtime
            if grep -q '^SENTRY_RELEASE=' backend/.env.runtime; then
                sed -i "s|^SENTRY_RELEASE=.*|SENTRY_RELEASE=$SENTRY_RELEASE_VAL|" backend/.env.runtime
            else
                printf 'SENTRY_RELEASE=%s\n' "$SENTRY_RELEASE_VAL" >> backend/.env.runtime
            fi
            chmod 600 backend/.env.runtime

            # External network для Caddy + obsidian-stack share
            docker network inspect gendesign_shared >/dev/null 2>&1 \
                || docker network create gendesign_shared

            # Re-login to GHCR (PAT может быть rotated после initial setup)
            echo "$GHCR_PAT" | docker login ghcr.io -u lekss361 --password-stdin

            export IMAGE_TAG="$IMAGE_TAG"
            docker compose -p gendesign -f docker-compose.prod.yml pull

            # Apply pending SQL migrations
            set -a; source .env; set +a

            docker compose -p gendesign -f docker-compose.prod.yml exec -T postgres \
              psql -U "$POSTGRES_USER" -d "$POSTGRES_DB" -v ON_ERROR_STOP=on -c "
                CREATE TABLE IF NOT EXISTS _schema_migrations (
                  filename TEXT PRIMARY KEY,
                  applied_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
                );
              "

            for sql_file in $(ls -1 data/sql/*.sql 2>/dev/null | sort); do
              fname=$(basename "$sql_file")
              applied=$(docker compose -p gendesign -f docker-compose.prod.yml exec -T postgres \
                psql -U "$POSTGRES_USER" -d "$POSTGRES_DB" -tAc \
                "SELECT COUNT(*) FROM _schema_migrations WHERE filename='$fname'")
              if [ "$applied" = "0" ]; then
                echo "→ Applying migration: $fname"
                docker compose -p gendesign -f docker-compose.prod.yml exec -T postgres \
                  psql -U "$POSTGRES_USER" -d "$POSTGRES_DB" -v ON_ERROR_STOP=on \
                  < "$sql_file" \
                  || { echo "FAILED on migration: $fname"; exit 1; }
                docker compose -p gendesign -f docker-compose.prod.yml exec -T postgres \
                  psql -U "$POSTGRES_USER" -d "$POSTGRES_DB" -c \
                  "INSERT INTO _schema_migrations (filename) VALUES ('$fname') ON CONFLICT DO NOTHING;"
              else
                echo "✓ Already applied: $fname"
              fi
            done
            echo "All migrations applied."

            docker compose -p gendesign -f docker-compose.prod.yml up -d

            docker compose -p gendesign -f docker-compose.prod.yml exec -T caddy \
              caddy reload --config /etc/caddy/Caddyfile || true

            # Cleanup old images
            for repo in ghcr.io/lekss361/gendesign-backend \
                        ghcr.io/lekss361/gendesign-worker \
                        ghcr.io/lekss361/gendesign-frontend; do
              docker images "$repo" --format '{{.Repository}}:{{.Tag}}' \
                | grep -v ':latest$' \
                | tail -n +3 \
                | xargs -r docker rmi 2>/dev/null || true
            done
            docker image prune -af || true
            docker builder prune -af || true

            # Health check
            for i in $(seq 1 30); do
              curl -fsS http://localhost:8000/health && break
              sleep 1
            done