import log from 'electron-log'
import * as path from 'path'
import { getAppRoot } from './environmentService'

// 移除ANSI颜色转义字符的函数
function stripAnsiColors(text: string): string {
  // 匹配ANSI转义序列的正则表达式 - 更完整的模式
  const ansiRegex = /\x1b\[[0-9;]*[mGKHF]|\x1b\[[\d;]*[A-Za-z]/g
  return text.replace(ansiRegex, '')
}

// 获取应用安装目录下的日志路径
function getLogDirectory(): string {
  const appRoot = getAppRoot()
  return path.join(appRoot, 'logs')
}

// 获取当前日期的日志文件名 - 使用ISO 8601格式
function getTodayLogFileName(): string {
  const today = new Date()
  const year = today.getFullYear()
  const month = String(today.getMonth() + 1).padStart(2, '0')
  const day = String(today.getDate()).padStart(2, '0')
  return `frontendlog-${year}-${month}-${day}.log`
}

// 配置日志系统
export function setupLogger() {
  // 设置日志文件路径到软件安装目录
  const logPath = getLogDirectory()

  // 确保日志目录存在
  const fs = require('fs')
  if (!fs.existsSync(logPath)) {
    fs.mkdirSync(logPath, { recursive: true })
  }

  // 配置日志格式
  log.transports.file.format = '[{y}-{m}-{d} {h}:{i}:{s}.{ms}] [{level}] {text}'
  log.transports.console.format = '[{y}-{m}-{d} {h}:{i}:{s}.{ms}] [{level}] {text}'

  // 设置主进程日志文件路径和名称 - 按日期分文件
  log.transports.file.resolvePathFn = () => {
    const fileName = getTodayLogFileName()
    return path.join(logPath, fileName)
  }

  // 设置日志级别
  log.transports.file.level = 'debug'
  log.transports.console.level = 'debug'

  // 设置文件大小限制 (50MB，因为按日期分文件，可以设置更大)
  log.transports.file.maxSize = 50 * 1024 * 1024

  // 禁用自动归档，因为我们按日期分文件
  log.transports.file.archiveLog = () => {
    /* do nothing */
  };

  // 捕获未处理的异常和Promise拒绝
  log.catchErrors({
    showDialog: false,
    onError: (options: any) => {
      log.error('未处理的错误:', options.error)
      log.error('版本信息:', options.versions)
      log.error('进程类型:', options.processType)
    },
  })

  // 重写console方法，将所有控制台输出重定向到日志
  const originalConsole = {
    log: console.log,
    error: console.error,
    warn: console.warn,
    info: console.info,
    debug: console.debug,
  }

  console.log = (...args) => {
    log.info(...args)
    originalConsole.log(...args)
  }

  console.error = (...args) => {
    log.error(...args)
    originalConsole.error(...args)
  }

  console.warn = (...args) => {
    log.warn(...args)
    originalConsole.warn(...args)
  }

  console.info = (...args) => {
    log.info(...args)
    originalConsole.info(...args)
  }

  console.debug = (...args) => {
    log.debug(...args)
    originalConsole.debug(...args)
  }

  log.info('日志系统初始化完成')
  log.info(`日志文件路径: ${path.join(logPath, getTodayLogFileName())}`)

  return log
}

// 导出日志实例和工具函数
export { log, stripAnsiColors }

// 获取当前日志文件路径
export function getLogPath(): string {
  return path.join(getLogDirectory(), getTodayLogFileName())
}

// 获取所有日志文件列表
export function getLogFiles(): string[] {
  const fs = require('fs')
  const logDir = getLogDirectory()
  
  if (!fs.existsSync(logDir)) {
    return []
  }
  
  const files = fs.readdirSync(logDir)
  return files
    .filter((file: string) => file.match(/^frontendlog-\d{4}-\d{2}-\d{2}\.log$/))
    .sort()
    .reverse() // 最新的在前面
}

// 清理旧日志文件
export function cleanOldLogs(daysToKeep: number = 7) {
  const fs = require('fs')
  const logDir = getLogDirectory()

  if (!fs.existsSync(logDir)) {
    return
  }

  const files = fs.readdirSync(logDir)
  const now = new Date()
  const cutoffDate = new Date(now.getTime() - daysToKeep * 24 * 60 * 60 * 1000)
  
  // 格式化截止日期为YYYY-MM-DD
  const cutoffDateStr = cutoffDate.getFullYear() + '-' +
    String(cutoffDate.getMonth() + 1).padStart(2, '0') + '-' +
    String(cutoffDate.getDate()).padStart(2, '0')

  files.forEach((file: string) => {
    // 匹配日志文件名格式 frontendlog-YYYY-MM-DD.log
    const match = file.match(/^frontendlog-(\d{4}-\d{2}-\d{2})\.log$/)
    if (match) {
      const fileDateStr = match[1]
      if (fileDateStr < cutoffDateStr) {
        const filePath = path.join(logDir, file)
        try {
          fs.unlinkSync(filePath)
          log.info(`已删除旧日志文件: ${file}`)
        } catch (error) {
          log.error(`删除旧日志文件失败: ${file}`, error)
        }
      }
    }
  })
}