package com.digitalperson.util

import android.content.Context
import android.location.LocationManager
import android.net.ConnectivityManager
import android.net.NetworkCapabilities
import android.os.Build
import java.text.SimpleDateFormat
import java.util.*

class SmartGreetingUtil(private val context: Context) {
    
    // 中国主要节日（月，日）
    private val festivals = mapOf(
        Pair(1, 1) to "元旦",
        Pair(2, 14) to "情人节",
        Pair(3, 8) to "妇女节",
        Pair(3, 12) to "植树节",
        Pair(4, 1) to "愚人节",
        Pair(5, 1) to "劳动节",
        Pair(5, 4) to "青年节",
        Pair(6, 1) to "儿童节",
        Pair(7, 1) to "建党节",
        Pair(8, 1) to "建军节",
        Pair(9, 10) to "教师节",
        Pair(10, 1) to "国庆节",
        Pair(12, 25) to "圣诞节"
    )
    
    // 获取当前时间问候语
    fun getTimeBasedGreeting(): String {
        val hour = Calendar.getInstance().get(Calendar.HOUR_OF_DAY)
        return when {
            hour in 6..11 -> "早上好"
            hour in 12..17 -> "下午好"
            hour in 18..22 -> "晚上好"
            else -> "夜深了"
        }
    }
    
    // 检查今天是否是节日
    fun isFestivalToday(): Pair<Boolean, String> {
        val calendar = Calendar.getInstance()
        val month = calendar.get(Calendar.MONTH) + 1 // 月份从0开始
        val day = calendar.get(Calendar.DAY_OF_MONTH)
        
        val festival = festivals[Pair(month, day)]
        return Pair(festival != null, festival ?: "")
    }
    
    // 获取完整的问候语
    fun getSmartGreeting(name: String?): String {
        val (isFestival, festivalName) = isFestivalToday()
        
        return if (isFestival) {
            if (name.isNullOrBlank()) {
                "小朋友好！今天是${festivalName}，祝你${festivalName}快乐哦！"
            } else {
                "你好，${name}！今天是${festivalName}，祝你${festivalName}快乐哦！"
            }
        } else {
            val timeGreeting = getTimeBasedGreeting()
            if (name.isNullOrBlank()) {
                "${timeGreeting}，很高兴见到你。请问你叫什么名字呀？"
            } else {
                "${timeGreeting}，${name}，很高兴见到你。"
            }
        }
    }
    
    // 检查网络连接
    fun isNetworkConnected(): Boolean {
        val connectivityManager = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            val network = connectivityManager.activeNetwork ?: return false
            val capabilities = connectivityManager.getNetworkCapabilities(network) ?: return false
            return capabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
        } else {
            val networkInfo = connectivityManager.activeNetworkInfo ?: return false
            return networkInfo.isConnected
        }
    }
    
    // 获取当前日期和时间
    fun getCurrentDateTime(): String {
        val sdf = SimpleDateFormat("yyyy年MM月dd日 HH:mm", Locale.CHINA)
        return sdf.format(Date())
    }
    
    // 生成节日问候语提示词（用于本地LLM）
    fun getFestivalGreetingPrompt(festivalName: String, name: String?): String {
        val basePrompt = "今天是$festivalName，请生成一条适合小学生的节日问候语，语气活泼友好，简短亲切。"
        return if (name.isNullOrBlank()) {
            basePrompt
        } else {
            "$basePrompt 问候对象叫$name。"
        }
    }
}