import { describe, expect, it, beforeEach } from 'vitest';
import { NativeOcrBridge, SimulatedOcrBridge, type NativeOcrModule } from '../src/services/ocrBridge';
import { ScreenshotChannel, SimulatedScreenshotListener, type ScreenshotEvent } from '../src/services/screenshot';
import { NotificationChannel, SimulatedNotificationListener, parseNotification, DEFAULT_PAYMENT_PACKAGES, type NotificationEvent } from '../src/services/notification';
import { SmsChannel, SimulatedSmsListener, parseSms, isBankSms, type SmsEvent } from '../src/services/sms';
import { OcrProcessor, MockOcrEngine } from '../src/domain/ocrProcessor';

beforeEach(() => {
  // 各测试自建实例，无需全局重置
});

// ============ ocrBridge ============

describe('ocrBridge', () => {
  it('NativeOcrBridge 用原生模块', async () => {
    const native: NativeOcrModule = {
      recognizeText: async () => '微信支付 金额 10 商户:x',
      recognizeTextBlocks: async () => [],
      isReady: async () => true,
    };
    const bridge = new NativeOcrBridge(native);
    expect(await bridge.recognizeText('img')).toBe('微信支付 金额 10 商户:x');
  });

  it('原生失败时降级到 fallback', async () => {
    const native: NativeOcrModule = {
      recognizeText: async () => { throw new Error('原生崩溃'); },
      recognizeTextBlocks: async () => [],
      isReady: async () => false,
    };
    const fallback = new SimulatedOcrBridge();
    fallback.preset('fallback', '降级文本');
    const bridge = new NativeOcrBridge(native, fallback);
    expect(await bridge.recognizeText('fallback')).toBe('降级文本');
  });

  it('无原生无 fallback 抛错', async () => {
    const bridge = new NativeOcrBridge(null);
    await expect(bridge.recognizeText('img')).rejects.toThrow('未加载');
  });

  it('SimulatedOcrBridge 按 key 返回预设', async () => {
    const sim = new SimulatedOcrBridge();
    sim.preset('wechat-screenshot', '微信支付 金额 20');
    expect(await sim.recognizeText('wechat-screenshot')).toContain('微信支付');
    expect(await sim.recognizeText('unknown')).toBe('');
  });
});

// ============ screenshot ============

describe('ScreenshotChannel', () => {
  it('处理截图 → OCR 识别成功', async () => {
    const ocrEngine = new MockOcrEngine();
    ocrEngine.defaultResponse = '微信支付 金额 24.50 商户:星巴克 2026-07-13 14:30';
    const processor = new OcrProcessor(ocrEngine);
    const channel = new ScreenshotChannel(processor);

    const event: ScreenshotEvent = {
      uri: 'content://media/screenshots/screenshot_123.png',
      base64: 'img-data',
      timestamp: Date.now(),
    };
    const result = await channel.handleScreenshot(event);
    expect(result.layer).toBe('layer1-rule');
    expect(result.event?.amount).toBe('-24.5');
  });

  it('去重：同一 URI 不重复处理', async () => {
    const ocrEngine = new MockOcrEngine();
    ocrEngine.defaultResponse = '微信支付 金额 10 商户:x';
    const processor = new OcrProcessor(ocrEngine);
    const channel = new ScreenshotChannel(processor);

    const event: ScreenshotEvent = {
      uri: 'content://media/screenshots/dup.png',
      base64: 'img',
      timestamp: Date.now(),
    };
    const r1 = await channel.handleScreenshot(event);
    const r2 = await channel.handleScreenshot(event);
    expect(r1.layer).toBe('layer1-rule');
    expect(r2.skipped).toBe('dedup');
  });

  it('非截图 URI 过滤', async () => {
    const processor = new OcrProcessor(new MockOcrEngine());
    const channel = new ScreenshotChannel(processor);
    const result = await channel.handleScreenshot({
      uri: 'content://media/photos/normal.jpg',
      base64: 'img',
      timestamp: Date.now(),
    });
    expect(result.skipped).toBe('dedup');
  });

  it('超过 30 秒的旧截图过滤', async () => {
    const processor = new OcrProcessor(new MockOcrEngine());
    const channel = new ScreenshotChannel(processor);
    const result = await channel.handleScreenshot({
      uri: 'content://screenshots/old.png',
      base64: 'img',
      timestamp: Date.now() - 60_000,
    });
    expect(result.skipped).toBe('dedup');
  });

  it('onScreenshot 回调触发', async () => {
    const ocrEngine = new MockOcrEngine();
    ocrEngine.defaultResponse = '微信支付 金额 10 商户:x';
    const processor = new OcrProcessor(ocrEngine);
    const channel = new ScreenshotChannel(processor);

    let callbackResult: string | null = null;
    channel.onScreenshot((result) => { callbackResult = result.event?.amount ?? null; });
    await channel.handleScreenshot({ uri: 'content://screenshots/x.png', base64: 'img', timestamp: Date.now() });
    expect(callbackResult).toBe('-10');
  });

  it('SimulatedScreenshotListener start/stop/simulate', async () => {
    const listener = new SimulatedScreenshotListener();
    const events: ScreenshotEvent[] = [];
    await listener.start(e => events.push(e));
    expect(listener.isListening()).toBe(true);
    listener.simulate({ uri: 'x', timestamp: 0 });
    expect(events).toHaveLength(1);
    await listener.stop();
    expect(listener.isListening()).toBe(false);
  });
});

// ============ notification ============

describe('NotificationChannel', () => {
  it('parseNotification 微信支付', () => {
    const event: NotificationEvent = {
      packageName: 'com.tencent.mm', title: '微信支付',
      text: '金额 24.50 商户:星巴克', timestamp: Date.now(),
    };
    const bill = parseNotification(event);
    expect(bill).not.toBeNull();
    expect(bill?.amount).toBe('-24.5');
  });

  it('白名单过滤：非支付 App', () => {
    const channel = new NotificationChannel();
    const result = channel.handleNotification({
      packageName: 'com.other.app', title: '通知', text: '内容', timestamp: Date.now(),
    });
    expect(result.processed).toBe(false);
    expect(result.reason).toBe('非白名单包');
  });

  it('白名单内 + 命中规则', () => {
    const channel = new NotificationChannel();
    const result = channel.handleNotification({
      packageName: 'com.tencent.mm', title: '微信支付', text: '金额 10 商户:x', timestamp: Date.now(),
    });
    expect(result.processed).toBe(true);
  });

  it('MD5 去重', () => {
    const channel = new NotificationChannel();
    const event: NotificationEvent = {
      packageName: 'com.tencent.mm', title: '微信支付', text: '金额 10 商户:x', timestamp: Date.now(),
    };
    const r1 = channel.handleNotification(event);
    const r2 = channel.handleNotification(event);
    expect(r1.processed).toBe(true);
    expect(r2.reason).toBe('MD5 去重');
  });

  it('onBillDetected 回调', () => {
    const channel = new NotificationChannel();
    let detected = false;
    channel.onBillDetected(() => { detected = true; });
    channel.handleNotification({
      packageName: 'com.tencent.mm', title: '微信支付', text: '金额 10 商户:x', timestamp: Date.now(),
    });
    expect(detected).toBe(true);
  });

  it('DEFAULT_PAYMENT_PACKAGES 含微信支付宝', () => {
    expect(DEFAULT_PAYMENT_PACKAGES).toContain('com.tencent.mm');
    expect(DEFAULT_PAYMENT_PACKAGES).toContain('com.eg.android.AlipayGphone');
  });
});

// ============ sms ============

describe('SmsChannel', () => {
  it('parseSms 银行短信', () => {
    const event: SmsEvent = {
      sender: '95588', body: '工商银行：尾号1234于超市消费100.50元，余额5000元',
      timestamp: Date.now(),
    };
    const bill = parseSms(event);
    expect(bill).not.toBeNull();
    expect(bill?.amount).toBe('-100.5');
    expect(bill?.direction).toBe('expense');
    expect(bill?.memo).toContain('1234');
  });

  it('parseSms 退款', () => {
    const event: SmsEvent = {
      sender: '95533', body: '建设银行：尾号5678退款30元',
      timestamp: Date.now(),
    };
    const bill = parseSms(event);
    expect(bill?.direction).toBe('refund');
  });

  it('parseSms 无金额返回 null', () => {
    const bill = parseSms({ sender: '95588', body: '余额提醒', timestamp: 0 });
    expect(bill).toBeNull();
  });

  it('isBankSms 判断', () => {
    expect(isBankSms('您有一笔交易')).toBe(true);
    expect(isBankSms('验证码是1234')).toBe(false);
  });

  it('SmsChannel 非银行短信过滤', () => {
    const channel = new SmsChannel();
    const result = channel.handleSms({ sender: '10086', body: '话费提醒', timestamp: 0 });
    expect(result.processed).toBe(false);
    expect(result.reason).toBe('非银行短信');
  });

  it('SmsChannel 银行短信处理成功', () => {
    const channel = new SmsChannel();
    const result = channel.handleSms({
      sender: '95588', body: '尾号1234消费100元', timestamp: Date.now(),
    });
    expect(result.processed).toBe(true);
  });

  it('SmsChannel MD5 去重', () => {
    const channel = new SmsChannel();
    const event: SmsEvent = { sender: '95588', body: '尾号1234消费100元', timestamp: 0 };
    const r1 = channel.handleSms(event);
    const r2 = channel.handleSms(event);
    expect(r1.processed).toBe(true);
    expect(r2.reason).toBe('MD5 去重');
  });

  it('SimulatedSmsListener simulate', async () => {
    const listener = new SimulatedSmsListener();
    const events: SmsEvent[] = [];
    await listener.start(e => events.push(e));
    listener.simulate({ sender: 'x', body: 'y', timestamp: 0 });
    expect(events).toHaveLength(1);
    await listener.stop();
  });
});