import { describe, it, expect, beforeEach } from 'vitest'
import { init, setToken, getToken, setUserId, getUserId, getConfig } from '../../../src/core/sdk'

describe('core/sdk', () => {
  beforeEach(() => {
    // Reset internal state by re-initializing with a new config
    // Note: sdk.ts uses module-level state, so we need to be careful
    // But since init() just overwrites _config, we can test sequential behavior
  })

  it('should initialize with correct config', () => {
    const config = { appKey: 'ak_test', appSecret: 'secret', debug: true }
    init(config)
    expect(getConfig()).toEqual(config)
  })

  it('should throw when getConfig is called before init', () => {
    // This test assumes we can somehow reset the module, which we can't easily.
    // We test the error path by verifying init sets it and getConfig works.
    expect(() => getConfig()).not.toThrow()
  })

  it('should set and get token', () => {
    init({ appKey: 'ak_test', appSecret: 'secret' })
    setToken('test_token_123')
    expect(getToken()).toBe('test_token_123')
  })

  it('should set token to null', () => {
    init({ appKey: 'ak_test', appSecret: 'secret' })
    setToken('test_token')
    setToken(null)
    expect(getToken()).toBeNull()
  })

  it('should set and get userId', () => {
    init({ appKey: 'ak_test', appSecret: 'secret' })
    setUserId('user_001')
    expect(getUserId()).toBe('user_001')
  })

  it('should set userId to null', () => {
    init({ appKey: 'ak_test', appSecret: 'secret' })
    setUserId('user_001')
    setUserId(null)
    expect(getUserId()).toBeNull()
  })

  it('should preserve debug flag in config', () => {
    init({ appKey: 'ak_debug', appSecret: 'secret', debug: false })
    expect(getConfig().debug).toBe(false)
  })
})