import { mkdtempSync, writeFileSync } from 'node:fs'
import { tmpdir } from 'node:os'
import { join } from 'node:path'
import { afterEach, describe, expect, it } from 'vitest'
import { z } from 'zod'
import { buildTestApp } from './helpers.js'

let app: Awaited<ReturnType<typeof buildTestApp>> | undefined

afterEach(async () => {
  await app?.close()
  app = undefined
})

describe('error handler', () => {
  it('необработанная ошибка → 500 без деталей', async () => {
    app = await buildTestApp()
    app.get('/__boom', async () => {
      throw new Error('secret internals')
    })
    const res = await app.inject({ method: 'GET', url: '/__boom' })
    expect(res.statusCode).toBe(500)
    expect(res.json()).toEqual({
      error: { code: 'INTERNAL', message: 'Internal server error' },
    })
    expect(res.body).not.toContain('secret internals')
  })

  it('ZodError → 400 BAD_REQUEST', async () => {
    app = await buildTestApp()
    app.get('/__zod', async () => z.object({ a: z.string() }).parse({}))
    const res = await app.inject({ method: 'GET', url: '/__zod' })
    expect(res.statusCode).toBe(400)
    expect(res.json().error.code).toBe('BAD_REQUEST')
  })

  it('ошибка с statusCode 4xx сохраняет статус', async () => {
    app = await buildTestApp()
    app.get('/__teapot', async () => {
      throw Object.assign(new Error('nope'), { statusCode: 418 })
    })
    const res = await app.inject({ method: 'GET', url: '/__teapot' })
    expect(res.statusCode).toBe(418)
  })
})

describe('not found', () => {
  it.each(['/oauth/nope', '/.well-known/nope', '/api/v1/nope'])(
    '%s → 404 JSON',
    async (url) => {
      app = await buildTestApp()
      const res = await app.inject({ method: 'GET', url })
      expect(res.statusCode).toBe(404)
      expect(res.json().error.code).toBe('NOT_FOUND')
    },
  )

  it('без STATIC_DIR неизвестный путь → 404 JSON', async () => {
    app = await buildTestApp()
    const res = await app.inject({ method: 'GET', url: '/some/spa/route' })
    expect(res.statusCode).toBe(404)
  })

  it('со STATIC_DIR: SPA-путь → index.html, /oauth и /.well-known → 404', async () => {
    const dir = mkdtempSync(join(tmpdir(), 'ap-static-'))
    writeFileSync(join(dir, 'index.html'), '<html>spa</html>')
    app = await buildTestApp({ STATIC_DIR: dir })
    const spa = await app.inject({ method: 'GET', url: '/some/spa/route' })
    expect(spa.statusCode).toBe(200)
    expect(spa.body).toContain('spa')
    for (const url of ['/oauth/nope', '/.well-known/nope']) {
      const res = await app.inject({ method: 'GET', url })
      expect(res.statusCode).toBe(404)
      expect(res.json().error.code).toBe('NOT_FOUND')
    }
  })
})