"use client";

import { motion } from "framer-motion";
import { useSession } from "next-auth/react";
import { useEffect, useState } from "react";

export const Greeting = () => {
  const { data: session } = useSession();
  const [imageCount, setImageCount] = useState<number | null>(null);
  
  // 获取用户名或邮箱前缀
  const getUserDisplayName = () => {
    if (session?.user?.name) {
      return session.user.name;
    }
    if (session?.user?.email) {
      // 如果没有名字，使用邮箱的前缀部分
      return session.user.email.split('@')[0];
    }
    return "";
  };

  const displayName = getUserDisplayName();

  // 获取用户生图统计数据
  useEffect(() => {
    const fetchImageStats = async () => {
      try {
        const response = await fetch("/api/user/image-stats");
        if (response.ok) {
          const data = await response.json();
          setImageCount(data.totalImages);
        }
      } catch (error) {
        console.error("Failed to fetch image stats:", error);
      }
    };

    if (session?.user?.id) {
      fetchImageStats();
    }
  }, [session?.user?.id]);

  return (
    <div
      className="mx-auto mt-4 flex size-full max-w-3xl flex-col justify-center px-4 md:mt-16 md:px-8"
      key="overview"
    >
      <motion.div
        animate={{ opacity: 1, y: 0 }}
        className="font-semibold text-xl md:text-2xl"
        exit={{ opacity: 0, y: 10 }}
        initial={{ opacity: 0, y: 10 }}
        transition={{ delay: 0.5 }}
      >
        你好{displayName && `，${displayName}`}，很高兴见到你
        {imageCount !== null && imageCount > 0 && (
          <span className="ml-2 text-base font-normal text-zinc-500">
            （截止今日已为您处理 <span className="font-semibold text-green-600">{imageCount.toLocaleString()}</span> 张图）
          </span>
        )}
      </motion.div>
      <motion.div
        animate={{ opacity: 1, y: 0 }}
        className="text-xl text-zinc-500 md:text-2xl"
        exit={{ opacity: 0, y: 10 }}
        initial={{ opacity: 0, y: 10 }}
        transition={{ delay: 0.6 }}
      >
        今天我能为你做些什么？
      </motion.div>
    </div>
  );
};