import { initDatabase, insertMeasurement, getAllMeasurements, getLatestMeasurement, updateMeasurement } from '../src/database/db'
import { Measurement } from '../src/types'
import * as SQLite from 'expo-sqlite'

jest.mock('expo-sqlite', () => ({
  openDatabaseAsync: jest.fn(),
}))

const mockMeasurement: Measurement = {
  id: '550e8400-e29b-41d4-a716-446655440000',
  weight: 75.5,
  bmi: 22.3,
  bodyFatPercentage: 15.2,
  fatMass: 11.5,
  musclePercentage: 40.1,
  muscleMass: 30.3,
  visceralFat: 8,
  bmr: 1650,
  measuredAt: '2024-01-01T08:00:00.000Z',
  createdAt: '2024-01-01T08:00:00.000Z',
  updatedAt: '2024-01-01T08:00:00.000Z',
  syncStatus: 'local',
}

describe('database', () => {
  let db: any

  beforeEach(() => {
    db = {
      execAsync: jest.fn(),
      runAsync: jest.fn(),
      getAllAsync: jest.fn(),
    }
    ;(SQLite.openDatabaseAsync as jest.Mock).mockResolvedValue(db)
  })

  it('initDatabase creates the measurements table', async () => {
    await initDatabase()
    expect(db.execAsync).toHaveBeenCalledWith(
      expect.stringContaining('CREATE TABLE IF NOT EXISTS measurements')
    )
  })

  it('insertMeasurement inserts a row', async () => {
    db.runAsync.mockResolvedValue(undefined)
    await initDatabase()
    await insertMeasurement(mockMeasurement)
    expect(db.runAsync).toHaveBeenCalledWith(
      expect.stringContaining('INSERT INTO measurements'),
      expect.arrayContaining([mockMeasurement.id])
    )
  })

  it('getAllMeasurements returns all measurements ordered by measuredAt desc', async () => {
    db.getAllAsync.mockResolvedValue([{ ...mockMeasurement }])
    await initDatabase()
    const result = await getAllMeasurements()
    expect(result).toHaveLength(1)
    expect(result[0].id).toBe(mockMeasurement.id)
  })

  it('getLatestMeasurement returns the most recent', async () => {
    db.getAllAsync.mockResolvedValue([{ ...mockMeasurement }])
    await initDatabase()
    const result = await getLatestMeasurement()
    expect(result).not.toBeNull()
    expect(result!.id).toBe(mockMeasurement.id)
  })

  it('updateMeasurement updates syncStatus', async () => {
    db.runAsync.mockResolvedValue(undefined)
    await initDatabase()
    await updateMeasurement(mockMeasurement.id, 'synced')
    expect(db.runAsync).toHaveBeenCalledWith(
      expect.stringContaining('UPDATE measurements'),
      expect.arrayContaining(['synced', mockMeasurement.id])
    )
  })
})