import { describe, expect, it } from 'vitest';

import { isClientAuthError } from '../src/services/clientAuthError';
import type { AuthServiceUnavailable } from '../src/services/generated/AuthServiceUnavailable';
import type { ClientAuthError } from '../src/services/generated/ClientAuthError';
import type { PhoneNumberInvalid } from '../src/services/generated/PhoneNumberInvalid';

/**
 * 编译期用例：每个变体在 `type` 上判别后都能落到一个**具名载荷类型**，
 * 等价于 Java 的 `catch (PhoneNumberInvalid e)`；类型不匹配时 `tsc` 会直接报错。
 */
function handleByNamedType(error: ClientAuthError) {
  switch (error.type) {
    case 'phoneNumberInvalid': {
      const payload: PhoneNumberInvalid = error;
      return payload.message;
    }
    case 'authServiceUnavailable': {
      const payload: AuthServiceUnavailable = error;
      return `${payload.status}:${payload.message}`;
    }
    default:
      return '';
  }
}

describe('AGC 认证命令错误的形状读取', () => {
  it('判别后按具名载荷类型分支处理', () => {
    expect(
      handleByNamedType({
        type: 'phoneNumberInvalid',
        message: '请输入正确的手机号',
      }),
    ).toBe('请输入正确的手机号');
    expect(
      handleByNamedType({
        type: 'authServiceUnavailable',
        status: 503,
        message: '登录服务暂时不可用',
      }),
    ).toBe('503:登录服务暂时不可用');
  });

  it('只按形状读取 Rust 的结构化拒绝，裸字符串与 Error 都不算', () => {
    expect(
      isClientAuthError({
        type: 'phoneOrPasswordMismatch',
        message: '手机号或密码错误',
      }),
    ).toEqual({ type: 'phoneOrPasswordMismatch', message: '手机号或密码错误' });
    expect(isClientAuthError('手机号或密码错误')).toBeNull();
    expect(isClientAuthError(new Error('手机号或密码错误'))).toBeNull();
    expect(
      isClientAuthError({ type: '', message: '手机号或密码错误' }),
    ).toBeNull();
    expect(isClientAuthError({ type: 'phoneNumberInvalid' })).toBeNull();
    expect(isClientAuthError(null)).toBeNull();
  });

  it('未知变体也算形状合法，由调用方按 default 交给错误池', () => {
    expect(
      isClientAuthError({ type: 'brandNewRejection', message: '新变体' }),
    ).toEqual({ type: 'brandNewRejection', message: '新变体' });
  });

  it('status 故意不校验：缺 status 但 message 可用的拒绝仍可读', () => {
    expect(
      isClientAuthError({
        type: 'authServiceUnavailable',
        message: '登录服务暂时不可用',
      }),
    ).toEqual({
      type: 'authServiceUnavailable',
      message: '登录服务暂时不可用',
    });
  });
});