import { describe, it, expect } from 'vitest';
import { createGenericBleAdapter } from '@/services/ble/adapters/GenericBleAdapter';
import type { GenericBLEProfile } from '@/services/ble/types';

// ---- Heart Rate (0x180D / 0x2A37) ----
// Flag byte=0x00 (UINT8), HR=75
function makeHeartRateData(hr: number, isUint16 = false): ArrayBuffer {
  const buf = new ArrayBuffer(isUint16 ? 3 : 2);
  const view = new DataView(buf);
  view.setUint8(0, isUint16 ? 0x01 : 0x00);
  if (isUint16) {
    view.setUint16(1, hr, true);
  } else {
    view.setUint8(1, hr);
  }
  return buf;
}

// ---- Health Thermometer (0x1809 / 0x2A1C) ----
// IEEE 11073 FLOAT: 32-bit — mantissa (24-bit) + exponent (8-bit)
function makeTemperatureData(tempCelsius: number): ArrayBuffer {
  const buf = new ArrayBuffer(4);
  const view = new DataView(buf);
  // flags byte: 0x00 = Celsius, no timestamp, no type
  view.setUint8(0, 0x00);
  // 11073 FLOAT: mantissa * 10^exponent
  // For 36.5: mantissa=365, exponent=-1
  const mantissa = Math.round(tempCelsius * 10);
  const exponent = -1;
  view.setInt16(1, mantissa, true);
  view.setInt8(3, exponent);
  return buf;
}

describe('GenericBleAdapter', () => {
  describe('心率解析', () => {
    const adapter = createGenericBleAdapter({
      name: 'Test Wristband',
      supportedModels: ['TestBand'],
      profiles: ['heart_rate'],
    });

    it('解析 UINT8 心率', () => {
      const data = makeHeartRateData(75);
      const results = adapter.parseNotification(
        '0000180D-0000-1000-8000-00805f9b34fb',
        '00002A37-0000-1000-8000-00805f9b34fb',
        data,
      );
      expect(results.length).toBe(1);
      expect(results[0].device_type).toBe('heart_rate');
      expect(results[0].values.heart_rate).toBe(75);
    });

    it('解析 UINT16 心率', () => {
      const data = makeHeartRateData(200, true);
      const results = adapter.parseNotification(
        '0000180D-0000-1000-8000-00805f9b34fb',
        '00002A37-0000-1000-8000-00805f9b34fb',
        data,
      );
      expect(results.length).toBe(1);
      expect(results[0].values.heart_rate).toBe(200);
    });

    it('忽略非目标 Characteristic', () => {
      const data = makeHeartRateData(75);
      const results = adapter.parseNotification(
        '0000180D-0000-1000-8000-00805f9b34fb',
        '00002A38-0000-1000-8000-00805f9b34fb', // Body Sensor Location
        data,
      );
      expect(results.length).toBe(0);
    });
  });

  describe('体温解析', () => {
    const adapter = createGenericBleAdapter({
      name: 'Test Thermometer',
      supportedModels: ['TestThermo'],
      profiles: ['health_thermometer'],
    });

    it('解析体温读数', () => {
      const data = makeTemperatureData(36.5);
      const results = adapter.parseNotification(
        '00001809-0000-1000-8000-00805f9b34fb',
        '00002A1C-0000-1000-8000-00805f9b34fb',
        data,
      );
      expect(results.length).toBe(1);
      expect(results[0].device_type).toBe('temperature');
      expect(results[0].values.value).toBeCloseTo(36.5, 0);
    });
  });

  describe('多 Profile 适配器', () => {
    const adapter = createGenericBleAdapter({
      name: 'Multi-Profile Band',
      supportedModels: ['CustomBand', 'MedicalBand'],
      profiles: ['heart_rate', 'health_thermometer'],
    });

    it('包含两个 Service UUID', () => {
      expect(adapter.serviceUUIDs.length).toBe(2);
    });

    it('包含两个 Profile 的 Characteristic', () => {
      expect(adapter.notifyCharacteristics.length).toBe(2);
    });

    it('supportedModels 配置正确', () => {
      expect(adapter.supportedModels).toEqual(['CustomBand', 'MedicalBand']);
    });

    it('解析心率 + 体温', () => {
      const hrResults = adapter.parseNotification(
        '0000180D-0000-1000-8000-00805f9b34fb',
        '00002A37-0000-1000-8000-00805f9b34fb',
        makeHeartRateData(80),
      );
      expect(hrResults[0].device_type).toBe('heart_rate');

      const tempResults = adapter.parseNotification(
        '00001809-0000-1000-8000-00805f9b34fb',
        '00002A1C-0000-1000-8000-00805f9b34fb',
        makeTemperatureData(37.2),
      );
      expect(tempResults[0].device_type).toBe('temperature');
    });
  });

  describe('边界情况', () => {
    const adapter = createGenericBleAdapter({
      name: 'Edge Case Band',
      supportedModels: ['Edge'],
      profiles: ['heart_rate'],
    });

    it('空数据返回空数组', () => {
      const results = adapter.parseNotification(
        '0000180D-0000-1000-8000-00805f9b34fb',
        '00002A37-0000-1000-8000-00805f9b34fb',
        new ArrayBuffer(0),
      );
      expect(results.length).toBe(0);
    });

    it('心率超范围 (>300) 返回空数组', () => {
      const results = adapter.parseNotification(
        '0000180D-0000-1000-8000-00805f9b34fb',
        '00002A37-0000-1000-8000-00805f9b34fb',
        makeHeartRateData(0),
      );
      expect(results.length).toBe(0);
    });
  });
});