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

describe('global error handler', () => {
  it('returns 500 with sanitized error in production mode', async () => {
    const originalEnv = process.env.NODE_ENV
    process.env.NODE_ENV = 'production'

    const app = new Hono()
    app.onError((_err, c) => {
      const msg = process.env.NODE_ENV === 'production' ? 'Internal server error' : _err.message
      return c.json({ error: msg }, 500)
    })
    app.get('/test', () => { throw new Error('DB connection failed at /path/to/file.ts:42') })

    const res = await app.request('/test')
    expect(res.status).toBe(500)
    const body = await res.json() as { error: string }
    expect(body.error).toBe('Internal server error')
    // Must NOT contain stack trace or file paths
    expect(body.error).not.toContain('.ts')
    expect(body.error).not.toContain('Error')
    expect(body.error).not.toContain('DB connection')

    process.env.NODE_ENV = originalEnv
  })

  it('returns error message in development mode', async () => {
    const app = new Hono()
    app.onError((_err, c) => {
      const msg = process.env.NODE_ENV === 'production' ? 'Internal server error' : _err.message
      return c.json({ error: msg }, 500)
    })
    app.get('/test', () => { throw new Error('Something broke') })

    const res = await app.request('/test')
    expect(res.status).toBe(500)
    const body = await res.json() as { error: string }
    expect(body.error).toBe('Something broke')
  })

  it('async route handler errors are caught', async () => {
    const app = new Hono()
    app.onError((_err, c) => c.json({ error: 'Internal server error' }, 500))
    app.get('/test', async () => {
      throw new Error('async failure')
    })

    const res = await app.request('/test')
    expect(res.status).toBe(500)
  })
})