feat(domain): 新增电池领域模型与聚合逻辑

src/domain/battery.test.ts

@@ -0,0 +1,62 @@
+import { describe, expect, test } from 'bun:test'
+import { createBatteriesResponse, createDashboardSnapshot, getDeviceStatus, toBatteryInfo } from './battery'
+
+const rows = [
+  {
+    id: 1,
+    userId: 7,
+    mac: 'RING-A03',
+    devModel: '2401-A',
+    devName: 'RING-A03',
+    isLowPower: 'false',
+    powerStatus: 2,
+    power: 94,
+    createTime: new Date('2026-05-10T23:00:00.000Z'),
+    remark: 'v3.8.2',
+  },
+  {
+    id: 2,
+    userId: 7,
+    mac: 'RING-B11',
+    devModel: '2402-B',
+    devName: 'RING-B11',
+    isLowPower: 'true',
+    powerStatus: 1,
+    power: 84,
+    createTime: '2026-05-10 22:00:00',
+    remark: null,
+  },
+]
+
+describe('battery domain', () => {
+  test('preserves legacy SOH status thresholds', () => {
+    expect(getDeviceStatus(91)).toBe('健康')
+    expect(getDeviceStatus(90)).toBe('关注')
+    expect(getDeviceStatus(85)).toBe('预警')
+  })
+
+  test('builds batteries response counters from records', () => {
+    const now = new Date('2026-05-11T00:00:00.000Z')
+    const items = rows.map(toBatteryInfo)
+    const response = createBatteriesResponse(items, now)
+
+    expect(response.updatedAt).toBe('2026-05-11T00:00:00.000Z')
+    expect(response.total).toBe(items.length)
+    expect(response.lowPower).toBe(1)
+    expect(response.charging).toBe(1)
+    expect(response.items[0]?.createTime).toBe('2026-05-10T23:00:00.000Z')
+  })
+
+  test('creates old dashboard aggregate shape from deterministic records', () => {
+    const now = new Date('2026-05-11T00:00:00.000Z')
+    const snapshot = createDashboardSnapshot(rows.map(toBatteryInfo), now)
+
+    expect(snapshot.devices).toHaveLength(2)
+    expect(snapshot.soh.history).toHaveLength(12)
+    expect(snapshot.soh.forecast).toHaveLength(4)
+    expect(snapshot.summary.totalDevices).toBe(snapshot.devices.length)
+    expect(snapshot.summary.warningCount + snapshot.summary.watchCount + snapshot.summary.healthyCount).toBe(
+      snapshot.devices.length,
+    )
+  })
+})