/**
 * GET /health — end-to-end skeleton test
 *
 * TDD RED: Tests written before implementation.
 * These will fail until Task 2 creates apps/api/src/routes/health.ts
 * and apps/api/src/index.ts.
 *
 * Behavior (from plan):
 *   - GET /health returns 200 with { ok: true, db: "up" } after a real DB round-trip
 *   - GET /health returns 503 if the DB round-trip throws
 */

import { describe, it, expect, vi, beforeEach } from 'vitest'

// We test the health route by importing the Hono app and calling it directly
// (no real DB needed — we mock the db module)

describe('GET /health', () => {
  beforeEach(() => {
    vi.resetModules()
  })

  it('returns 200 with { ok: true, db: "up" } when DB round-trip succeeds', async () => {
    // Mock the db module so no real MariaDB is needed
    vi.mock('../src/db/client.js', () => ({
      db: {
        execute: vi.fn().mockResolvedValue([[]]),
      },
    }))

    const { app } = await import('../src/index.js')
    const res = await app.request('/health')
    expect(res.status).toBe(200)
    const body = await res.json()
    expect(body.ok).toBe(true)
    expect(body.db).toBe('up')
  })

  it('returns 503 when DB round-trip throws', async () => {
    vi.mock('../src/db/client.js', () => ({
      db: {
        execute: vi.fn().mockRejectedValue(new Error('DB connection failed')),
      },
    }))

    const { app } = await import('../src/index.js')
    const res = await app.request('/health')
    expect(res.status).toBe(503)
  })
})