# CI Pipeline: Validates code on PRs, builds and deploys on push to protected branches
#
# Flow:
#   PR → dev/main     : Runs validation (required status check)
#   Push → dev        : Builds images + deploys to staging
#   Push → main       : Builds images (production deploy is manual)
#
# Full config archived at: .github/workflows/ci-main.full.yml

name: CI

on:
  push:
    branches:
      - main
      - dev
    paths:
      - 'apps/**'
      - 'packages/**'
      - 'services/**'
      - 'package.json'
      - 'pnpm-lock.yaml'
      - 'turbo.json'
  pull_request:
    branches:
      - main
      - dev
    paths:
      - 'apps/**'
      - 'packages/**'
      - 'services/**'
      - 'package.json'
      - 'pnpm-lock.yaml'
      - 'turbo.json'
  workflow_dispatch:

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

env:
  NODE_VERSION: '20'
  PNPM_VERSION: '9.15.0'

jobs:
  # Validation job - runs on PRs to catch issues before merge
  validate:
    name: Validate
    runs-on: ubuntu-latest
    if: github.event_name == 'pull_request'
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Setup pnpm
        uses: pnpm/action-setup@v2
        with:
          version: ${{ env.PNPM_VERSION }}

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: ${{ env.NODE_VERSION }}
          cache: 'pnpm'

      - name: Install dependencies
        run: pnpm install --frozen-lockfile

      - name: Type check
        run: pnpm run type-check

      - name: Lint
        run: pnpm run lint || echo "Lint warnings found"

  # Build Docker images - only on push to dev/main (not PRs)
  build-docker-images:
    name: Build ${{ matrix.service.name }}
    runs-on: ubuntu-latest
    if: github.event_name == 'push'
    strategy:
      matrix:
        service:
          - { name: 'mana-core-auth', path: 'services/mana-core-auth', port: '3001' }
          - { name: 'chat-backend', path: 'apps/chat/apps/backend', port: '3002' }
          - { name: 'chat-web', path: 'apps/chat/apps/web', port: '3000' }
      fail-fast: false
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

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

      - name: Check if Dockerfile exists
        id: check-dockerfile
        run: |
          if [ -f "${{ matrix.service.path }}/Dockerfile" ]; then
            echo "exists=true" >> $GITHUB_OUTPUT
          else
            echo "exists=false" >> $GITHUB_OUTPUT
            echo "::warning::No Dockerfile found for ${{ matrix.service.name }}"
          fi

      - name: Login to GitHub Container Registry
        if: steps.check-dockerfile.outputs.exists == 'true'
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata
        if: steps.check-dockerfile.outputs.exists == 'true'
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ghcr.io/${{ github.repository_owner }}/${{ matrix.service.name }}
          tags: |
            type=raw,value=latest

      - name: Build and push
        if: steps.check-dockerfile.outputs.exists == 'true'
        uses: docker/build-push-action@v5
        with:
          context: .
          file: ${{ matrix.service.path }}/Dockerfile
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

  # Trigger staging deployment after all images are built (only on push to dev)
  deploy-staging:
    name: Deploy to Staging
    runs-on: ubuntu-latest
    needs: build-docker-images
    if: github.event_name == 'push' && github.ref == 'refs/heads/dev'
    steps:
      - name: Trigger staging deployment
        uses: actions/github-script@v7
        with:
          script: |
            await github.rest.actions.createWorkflowDispatch({
              owner: context.repo.owner,
              repo: context.repo.repo,
              workflow_id: 'cd-staging.yml',
              ref: 'dev'
            });
            console.log('Staging deployment triggered');