// tests/shared/errors.test.ts
// D3ROError + IPCResult 헬퍼 테스트

import { describe, it, expect } from 'vitest'
import { D3ROError, ErrorCode, ipcSuccess, ipcError } from '@d3ro/core/errors'

describe('D3ROError', () => {
  it('code, message, details를 올바르게 설정한다', () => {
    const err = new D3ROError(ErrorCode.STTModelNotFound, 'Model not found', { modelId: 'large' })

    expect(err.code).toBe(ErrorCode.STTModelNotFound)
    expect(err.message).toBe('Model not found')
    expect(err.details).toEqual({ modelId: 'large' })
    expect(err.name).toBe('D3ROError')
    expect(err instanceof Error).toBe(true)
  })

  it('toJSON으로 직렬화할 수 있다', () => {
    const err = new D3ROError(ErrorCode.LLMServerUnreachable, 'Server down')
    const json = err.toJSON()

    expect(json.code).toBe(300)
    expect(json.message).toBe('Server down')
    expect(json.details).toBeUndefined()
  })

  it('fromJSON으로 역직렬화할 수 있다', () => {
    const json = { code: ErrorCode.AudioDeviceNotFound, message: 'No mic' }
    const err = D3ROError.fromJSON(json)

    expect(err).toBeInstanceOf(D3ROError)
    expect(err.code).toBe(ErrorCode.AudioDeviceNotFound)
    expect(err.message).toBe('No mic')
  })
})

describe('IPCResult helpers', () => {
  it('ipcSuccess는 success: true + data를 반환한다', () => {
    const result = ipcSuccess({ value: 42 })

    expect(result.success).toBe(true)
    if (result.success) {
      expect(result.data).toEqual({ value: 42 })
    }
  })

  it('ipcError는 success: false + error를 반환한다', () => {
    const result = ipcError(ErrorCode.DBQueryFailed, 'Query failed', { table: 'history' })

    expect(result.success).toBe(false)
    if (!result.success) {
      expect(result.error.code).toBe(ErrorCode.DBQueryFailed)
      expect(result.error.message).toBe('Query failed')
      expect(result.error.details).toEqual({ table: 'history' })
    }
  })
})

describe('ErrorCode', () => {
  it('에러 코드 범위가 올바르다', () => {
    // STT: 100-199
    expect(ErrorCode.STTEngineNotInstalled).toBe(100)
    expect(ErrorCode.STTGPUNotAvailable).toBe(140)

    // LLM: 300-399
    expect(ErrorCode.LLMServerUnreachable).toBe(300)
    expect(ErrorCode.LLMPromptTooLong).toBe(331)

    // Audio: 400-499
    expect(ErrorCode.AudioDeviceNotFound).toBe(400)

    // System: 900-999
    expect(ErrorCode.UnknownError).toBe(999)
  })
})