name: Integration Tests

on:
  workflow_dispatch:
    inputs:
      suite:
        description: 'Which suite to run'
        required: false
        default: 'tier1'
        type: choice
        options:
          - tier1
          - full
  pull_request:
  push:
    branches:
      - main
  schedule:
    # Nightly full run at 04:30 UTC.
    - cron: '30 4 * * *'

jobs:
  check-changes:
    name: Check for relevant changes
    runs-on: ubuntu-latest
    if: github.event_name != 'schedule'
    outputs:
      should_run: ${{ steps.filter.outputs.should_run }}
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Check for changes that affect DB-backed tests
        id: filter
        run: |
          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
            echo "should_run=true" >> $GITHUB_OUTPUT
            exit 0
          fi

          if [ "${{ github.event_name }}" = "pull_request" ]; then
            BASE_SHA="${{ github.event.pull_request.base.sha }}"
          else
            BASE_SHA="${{ github.event.before }}"
          fi

          CHANGED_FILES=$(git diff --name-only $BASE_SHA ${{ github.sha }} 2>/dev/null || echo "")

          if echo "$CHANGED_FILES" | grep -qE '^(server/|packages/|shared/|ee/server/|\.github/workflows/integration-tests\.yml)'; then
            echo "should_run=true" >> $GITHUB_OUTPUT
            echo "Relevant changes detected - will run integration tests"
          else
            echo "should_run=false" >> $GITHUB_OUTPUT
            echo "No relevant changes - skipping integration tests"
          fi

  integration-tests:
    name: ${{ (github.event_name == 'schedule' || github.event.inputs.suite == 'full') && 'Full integration suite' || 'Tier-1 integration subset' }}
    needs: check-changes
    # `needs` is skipped entirely on schedule; `always()` lets the nightly run proceed.
    if: always() && (github.event_name == 'schedule' || needs.check-changes.outputs.should_run == 'true')
    runs-on: ubuntu-latest
    timeout-minutes: 90

    services:
      postgres:
        image: ankane/pgvector:latest
        env:
          POSTGRES_USER: postgres
          POSTGRES_PASSWORD: test_password
          POSTGRES_DB: postgres
        ports:
          - 5432:5432
        options: >-
          --health-cmd pg_isready
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5

    env:
      DB_HOST: localhost
      DB_PORT: '5432'
      DB_USER_ADMIN: postgres
      DB_PASSWORD_ADMIN: test_password
      DB_USER_SERVER: app_user
      DB_PASSWORD_SERVER: test_password
      APP_ENV: test
      NODE_ENV: test
      # Fail loudly instead of describe.skip when the DB is unreachable (see server/test-utils/requireDb.ts).
      REQUIRE_DB: '1'
      VITEST_SEED: '20260610'

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

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20'
          cache: 'npm'

      - name: Upgrade npm to version 11
        run: npm install -g npm@11

      # No npm install fallback: a failing npm ci means the lockfile is out of
      # sync with a package.json, and regenerating dependencies on the fly once
      # swapped vitest 3→4 and silently broke test-file serialization. Fail
      # loudly instead.
      - name: Install dependencies
        run: npm ci

      - name: Wait for Postgres to be ready
        run: |
          until pg_isready -h localhost -p 5432 -U postgres; do
            echo "Waiting for postgres..."
            sleep 2
          done

      # Some tests read credentials from secrets/ files directly (getSecret falls back to env).
      - name: Create secrets files
        run: |
          mkdir -p secrets
          echo -n "test_password" > secrets/postgres_password
          echo -n "test_password" > secrets/db_password_server
          chmod 600 secrets/*

      - name: Run Tier-1 integration subset
        if: github.event_name != 'schedule' && github.event.inputs.suite != 'full'
        working-directory: ./server
        run: npm run test:integration:tier1
        env:
          NODE_OPTIONS: '--max-old-space-size=8192'

      - name: Run full integration suite
        if: github.event_name == 'schedule' || github.event.inputs.suite == 'full'
        working-directory: ./server
        run: npm run test:integration:ci
        env:
          NODE_OPTIONS: '--max-old-space-size=8192'