import type { AppConfig, AddRecord } from '../types'
import { defaultConfig } from '../types'

const STORAGE_KEYS = {
  CONFIG: 'codex-pool-config',
  RECORDS: 'codex-pool-records',
} as const

/**
 * 保存配置到 localStorage
 */
export function saveConfig(config: AppConfig): void {
  try {
    localStorage.setItem(STORAGE_KEYS.CONFIG, JSON.stringify(config))
  } catch (error) {
    console.error('Failed to save config:', error)
  }
}

/**
 * 从 localStorage 加载配置
 */
export function loadConfig(): AppConfig {
  try {
    const stored = localStorage.getItem(STORAGE_KEYS.CONFIG)
    if (stored) {
      const parsed = JSON.parse(stored)

      // Migration: handle old email config format -> new services array format
      let emailConfig = { ...defaultConfig.email }

      if (parsed.email) {
        if (parsed.email.services && Array.isArray(parsed.email.services)) {
          // New format - use directly
          emailConfig.services = parsed.email.services
        } else if (parsed.email.apiBase || parsed.email.domains) {
          // Old format - migrate to new services array
          const domains = parsed.email.domains || (parsed.email.domain ? [parsed.email.domain] : ['esyteam.edu.kg'])
          emailConfig.services = [{
            name: 'default',
            apiBase: parsed.email.apiBase || 'https://mail.esyteam.edu.kg',
            apiToken: parsed.email.apiToken || '',
            domain: domains[0] || 'esyteam.edu.kg',
          }]
        }
      }

      // 合并默认配置，确保新增字段有默认值
      return {
        ...defaultConfig,
        ...parsed,
        s2a: { ...defaultConfig.s2a, ...parsed.s2a },
        pooling: { ...defaultConfig.pooling, ...parsed.pooling },
        check: { ...defaultConfig.check, ...parsed.check },
        email: emailConfig,
      }
    }
  } catch (error) {
    console.error('Failed to load config:', error)
  }
  return defaultConfig
}

/**
 * 保存记录到 localStorage
 */
export function saveRecords(records: AddRecord[]): void {
  try {
    localStorage.setItem(STORAGE_KEYS.RECORDS, JSON.stringify(records))
  } catch (error) {
    console.error('Failed to save records:', error)
  }
}

/**
 * 从 localStorage 加载记录
 */
export function loadRecords(): AddRecord[] {
  try {
    const stored = localStorage.getItem(STORAGE_KEYS.RECORDS)
    if (stored) {
      return JSON.parse(stored)
    }
  } catch (error) {
    console.error('Failed to load records:', error)
  }
  return []
}

/**
 * 生成唯一 ID
 */
export function generateId(): string {
  return `${Date.now()}-${Math.random().toString(36).substring(2, 9)}`
}

/**
 * 清除所有存储数据
 */
export function clearStorage(): void {
  try {
    localStorage.removeItem(STORAGE_KEYS.CONFIG)
    localStorage.removeItem(STORAGE_KEYS.RECORDS)
  } catch (error) {
    console.error('Failed to clear storage:', error)
  }
}