import { useState, useEffect } from "react";
import { useNavigate } from "react-router";
import { motion } from "motion/react";
import {
  ChevronLeft,
  User,
  Calendar,
  Heart,
  Phone,
  Mail,
  MapPin,
  Edit2,
  Check,
  X,
  Camera,
  Baby,
  Activity,
  AlertCircle,
  Shield,
  Bell,
  LogOut,
} from "lucide-react";
import { Button } from "../components/ui/button";
import { Card } from "../components/ui/card";
import { Badge } from "../components/ui/badge";
import { useUser, getPregnancyStage } from "../context/UserContext";
import { isDebug, getDebugLogs } from "../services/debug";

interface UserInfo {
  name: string;
  age: number;
  phone: string;
  email: string;
  address: string;
  avatar_url: string | null;
  lastPeriod: string;
  dueDate: string;
  currentWeek: number;
  currentDay: number;
  height: number;
  prePregnancyWeight: number;
  currentWeight: number;
  bloodType: string;
  allergies: string[];
  medicalHistory: string[];
  emergencyContact: {
    name: string;
    relation: string;
    phone: string;
  };
}

export function ProfilePage() {
  const navigate = useNavigate();
  const { user, updateUserRemote, logout } = useUser();
  const [isEditing, setIsEditing] = useState<string | null>(null);
  const [userInfo, setUserInfo] = useState<UserInfo>({
    name: user.name || "未设置",
    age: user.age || 0,
    phone: user.phone || "未设置",
    email: "",
    address: "",
    avatar_url: user.avatar_url || null,
    lastPeriod: user.lastPeriodDate || "",
    dueDate: user.dueDate || "",
    currentWeek: user.currentWeek,
    currentDay: user.currentDay,
    height: user.height || 0,
    prePregnancyWeight: user.prePregnancyWeight || 0,
    currentWeight: user.currentWeight || 0,
    bloodType: user.bloodType || "未设置",
    allergies: user.allergies.length ? user.allergies : ["无"],
    medicalHistory: user.medicalHistory.length ? user.medicalHistory : ["无重大病史"],
    emergencyContact: {
      name: user.emergencyContact.name || "未设置",
      relation: user.emergencyContact.relation || "",
      phone: user.emergencyContact.phone || "",
    },
  });

  const [editValues, setEditValues] = useState<Partial<UserInfo>>({});

  const handleEdit = (field: string) => {
    setIsEditing(field);
    setEditValues({ [field]: (userInfo as any)[field] });
  };

  const handleSave = (field: string) => {
    const updated = { ...userInfo, ...(editValues as any) };
    setUserInfo(updated);
    setIsEditing(null);
    setEditValues({});
    // Sync back to global context + backend
    updateUserRemote({
      name: updated.name,
      age: updated.age,
      phone: updated.phone,
      lastPeriodDate: updated.lastPeriod,
      height: updated.height,
      prePregnancyWeight: updated.prePregnancyWeight,
      currentWeight: updated.currentWeight,
      bloodType: updated.bloodType,
      allergies: updated.allergies,
      medicalHistory: updated.medicalHistory,
      emergencyContact: updated.emergencyContact,
    });
  };

  const handleCancel = () => {
    setIsEditing(null);
    setEditValues({});
  };

  const calculateBMI = () => {
    const heightInMeters = userInfo.height / 100;
    const bmi = userInfo.currentWeight / (heightInMeters * heightInMeters);
    return bmi.toFixed(1);
  };

  const calculateWeightGain = () => {
    return (userInfo.currentWeight - userInfo.prePregnancyWeight).toFixed(1);
  };

  const InfoItem = ({
    label,
    value,
    field,
    editable = true,
    type = "text",
    icon: Icon,
  }: {
    label: string;
    value: string | number;
    field: string;
    editable?: boolean;
    type?: string;
    icon?: any;
  }) => (
    <div className="flex items-center justify-between py-3 border-b border-gray-100 last:border-0">
      <div className="flex items-center gap-3">
        {Icon && (
          <div className="w-8 h-8 bg-morandi-100 rounded-lg flex items-center justify-center">
            <Icon className="w-4 h-4 text-morandi-500" />
          </div>
        )}
        <div>
          <div className="text-sm text-gray-500">{label}</div>
          {isEditing === field ? (
            <input
              type={type}
              value={(editValues as any)[field] ?? value}
              onChange={(e) =>
                setEditValues({ ...editValues, [field]: e.target.value })
              }
              className="mt-1 px-2 py-1 border border-morandi-200 rounded-lg focus:outline-none focus:ring-2 focus:ring-morandi-500"
              autoFocus
            />
          ) : (
            <div className="font-semibold text-gray-800">{value}</div>
          )}
        </div>
      </div>
      {editable && (
        <div className="flex items-center gap-2">
          {isEditing === field ? (
            <>
              <button
                onClick={() => handleSave(field)}
                className="w-8 h-8 bg-morandi-sage-100 rounded-full flex items-center justify-center hover:bg-morandi-sage-200"
              >
                <Check className="w-4 h-4 text-morandi-sage-500" />
              </button>
              <button
                onClick={handleCancel}
                className="w-8 h-8 bg-gray-100 rounded-full flex items-center justify-center hover:bg-gray-200"
              >
                <X className="w-4 h-4 text-gray-600" />
              </button>
            </>
          ) : (
            <button
              onClick={() => handleEdit(field)}
              className="w-8 h-8 bg-gray-100 rounded-full flex items-center justify-center hover:bg-gray-200"
            >
              <Edit2 className="w-4 h-4 text-gray-600" />
            </button>
          )}
        </div>
      )}
    </div>
  );

  // 🐞 调试面板（VITE_DEBUG=true 时显示）
  const [debugLog] = useState<string[]>(() => isDebug() ? getDebugLogs() : []);
  const [showDebug, setShowDebug] = useState(false);

  return (
    <div className="min-h-dvh bg-morandi-50 pb-20">
      {/* 🐞 调试面板 */}
      {debugLog.length > 0 && (
        <div className="bg-black/80 text-white text-xs font-mono p-3">
          <button onClick={() => setShowDebug(!showDebug)} className="text-yellow-400 font-bold mb-1">
            🐞 {showDebug ? '收起' : '展开'}调试日志 ({debugLog.length}条)
          </button>
          {showDebug && debugLog.map((line, i) => (
            <div key={i} className="text-green-300 break-all">{line}</div>
          ))}
        </div>
      )}
      {/* 顶部导航 */}
      <div className="bg-white border-b border-gray-100 sticky top-0 z-10">
        <div className="mx-auto px-4 py-4 flex items-center justify-between">
          <div className="flex items-center gap-3">
            <button
              onClick={() => navigate(-1)}
              className="w-10 h-10 rounded-full hover:bg-gray-100 flex items-center justify-center"
            >
              <ChevronLeft className="w-6 h-6 text-gray-600" />
            </button>
            <div>
              <h1 className="font-semibold text-gray-800">个人中心</h1>
              <p className="text-xs text-gray-500">管理您的个人信息</p>
            </div>
          </div>
        </div>
      </div>

      <div className="mx-auto p-4 space-y-6">
        {/* 个人头像卡片 */}
        <motion.div
          initial={{ opacity: 0, y: 20 }}
          animate={{ opacity: 1, y: 0 }}
        >
          <Card className="bg-gradient-to-br from-morandi-400 to-morandi-500 border-0 text-white p-6 rounded-3xl shadow-sm">
            <div className="flex items-center gap-4">
              <div className="relative">
                {userInfo.avatar_url ? (
                  <img src={userInfo.avatar_url} alt="头像" className="w-20 h-20 rounded-full object-cover" />
                ) : (
                  <div className="w-20 h-20 bg-white/20 backdrop-blur-sm rounded-full flex items-center justify-center">
                    <User className="w-10 h-10 text-white" />
                  </div>
                )}
                <button className="absolute bottom-0 right-0 w-6 h-6 bg-white rounded-full flex items-center justify-center shadow-sm">
                  <Camera className="w-3 h-3 text-morandi-500" />
                </button>
              </div>
              <div className="flex-1">
                <h2 className="text-2xl font-semibold mb-1">{userInfo.name}</h2>
                <p className="text-white/90 text-sm">
                  {userInfo.age}岁 · {userInfo.bloodType}
                </p>
                <p className="text-white/80 text-sm mt-1">
                  孕{userInfo.currentWeek}周+{userInfo.currentDay}天
                </p>
              </div>
            </div>
          </Card>
        </motion.div>

        {/* 基本信息 */}
        <motion.div
          initial={{ opacity: 0, y: 20 }}
          animate={{ opacity: 1, y: 0 }}
          transition={{ delay: 0.05 }}
        >
          <h2 className="text-base font-semibold text-gray-800 mb-3 flex items-center gap-2">
            <User className="w-5 h-5 text-morandi-500" />
            基本信息
          </h2>
          <Card className="bg-white rounded-2xl p-5 shadow-sm border-0">
            <InfoItem
              label="姓名"
              value={userInfo.name}
              field="name"
              icon={User}
            />
          </Card>
        </motion.div>

        {/* 孕期信息 */}
        <motion.div
          initial={{ opacity: 0, y: 20 }}
          animate={{ opacity: 1, y: 0 }}
          transition={{ delay: 0.1 }}
        >
          <h2 className="text-base font-semibold text-gray-800 mb-3 flex items-center gap-2">
            <Baby className="w-5 h-5 text-morandi-500" />
            孕期信息
          </h2>
          <Card className="bg-white rounded-2xl p-5 shadow-sm border-0">
            <InfoItem
              label="末次月经"
              value={userInfo.lastPeriod}
              field="lastPeriod"
              type="date"
              icon={Calendar}
            />
            <InfoItem
              label="预产期"
              value={userInfo.dueDate}
              field="dueDate"
              type="date"
              icon={Heart}
            />
            <div className="flex items-center justify-between py-3">
              <div className="flex items-center gap-3">
                <div className="w-8 h-8 bg-morandi-100 rounded-lg flex items-center justify-center">
                  <Activity className="w-4 h-4 text-morandi-500" />
                </div>
                <div>
                  <div className="text-sm text-gray-500">当前孕周</div>
                  <div className="font-semibold text-gray-800">
                    {userInfo.currentWeek}周+{userInfo.currentDay}天
                  </div>
                </div>
              </div>
              <Badge className="bg-morandi-100 text-morandi-500 hover:bg-morandi-100">
                {getPregnancyStage(userInfo.currentWeek)}
              </Badge>
            </div>
          </Card>
        </motion.div>

        {/* 健康数据 */}
        <motion.div
          initial={{ opacity: 0, y: 20 }}
          animate={{ opacity: 1, y: 0 }}
          transition={{ delay: 0.2 }}
        >
          <h2 className="text-base font-semibold text-gray-800 mb-3 flex items-center gap-2">
            <Activity className="w-5 h-5 text-morandi-slate-500" />
            健康数据
          </h2>
          <Card className="bg-white rounded-2xl p-5 shadow-sm border-0">
            <InfoItem
              label="身高"
              value={`${userInfo.height} cm`}
              field="height"
              type="number"
            />
            <InfoItem
              label="孕前体重"
              value={`${userInfo.prePregnancyWeight} kg`}
              field="prePregnancyWeight"
              type="number"
            />
            <InfoItem
              label="当前体重"
              value={`${userInfo.currentWeight} kg`}
              field="currentWeight"
              type="number"
            />
            <div className="grid grid-cols-2 gap-4 mt-4 pt-4 border-t border-gray-100">
              <div className="bg-morandi-slate-50 rounded-xl p-3">
                <div className="text-xs text-morandi-slate-500 mb-1">当前BMI</div>
                <div className="text-2xl font-semibold text-morandi-500">
                  {calculateBMI()}
                </div>
                <div className="text-xs text-morandi-slate-500 mt-1">正常范围</div>
              </div>
              <div className="bg-morandi-sage-100 rounded-xl p-3">
                <div className="text-xs text-morandi-sage-500 mb-1">体重增长</div>
                <div className="text-2xl font-semibold text-morandi-sage-600">
                  +{calculateWeightGain()} kg
                </div>
                <div className="text-xs text-morandi-sage-500 mt-1">符合预期</div>
              </div>
            </div>
          </Card>
        </motion.div>

        {/* 联系方式 */}
        <motion.div
          initial={{ opacity: 0, y: 20 }}
          animate={{ opacity: 1, y: 0 }}
          transition={{ delay: 0.3 }}
        >
          <h2 className="text-base font-semibold text-gray-800 mb-3 flex items-center gap-2">
            <Phone className="w-5 h-5 text-morandi-600" />
            联系方式
          </h2>
          <Card className="bg-white rounded-2xl p-5 shadow-sm border-0">
            <InfoItem
              label="手机号"
              value={userInfo.phone}
              field="phone"
              icon={Phone}
            />
            <InfoItem
              label="邮箱"
              value={userInfo.email}
              field="email"
              icon={Mail}
            />
            <InfoItem
              label="居住地"
              value={userInfo.address}
              field="address"
              icon={MapPin}
            />
          </Card>
        </motion.div>

        {/* 医疗信息 */}
        <motion.div
          initial={{ opacity: 0, y: 20 }}
          animate={{ opacity: 1, y: 0 }}
          transition={{ delay: 0.4 }}
        >
          <h2 className="text-base font-semibold text-gray-800 mb-3 flex items-center gap-2">
            <AlertCircle className="w-5 h-5 text-red-600" />
            医疗信息
          </h2>
          <Card className="bg-white rounded-2xl p-5 shadow-sm border-0">
            <div className="space-y-4">
              <div>
                <div className="text-sm text-gray-500 mb-2">血型</div>
                <Badge className="bg-red-100 text-red-700 hover:bg-red-100">
                  {userInfo.bloodType}
                </Badge>
              </div>
              <div>
                <div className="text-sm text-gray-500 mb-2">药物过敏史</div>
                <div className="flex flex-wrap gap-2">
                  {userInfo.allergies.map((allergy, index) => (
                    <Badge
                      key={index}
                      className="bg-morandi-rose-100 text-morandi-rose-400 hover:bg-morandi-rose-100"
                    >
                      {allergy}
                    </Badge>
                  ))}
                  <button className="px-3 py-1 border border-dashed border-gray-300 rounded-full text-sm text-gray-500 hover:border-morandi-200 hover:text-morandi-500">
                    + 添加
                  </button>
                </div>
              </div>
              <div>
                <div className="text-sm text-gray-500 mb-2">既往病史</div>
                <div className="flex flex-wrap gap-2">
                  {userInfo.medicalHistory.map((history, index) => (
                    <Badge
                      key={index}
                      className="bg-morandi-50 text-morandi-500 hover:bg-morandi-50"
                    >
                      {history}
                    </Badge>
                  ))}
                  <button className="px-3 py-1 border border-dashed border-gray-300 rounded-full text-sm text-gray-500 hover:border-morandi-200 hover:text-morandi-500">
                    + 添加
                  </button>
                </div>
              </div>
            </div>
          </Card>
        </motion.div>

        {/* 紧急联系人 */}
        <motion.div
          initial={{ opacity: 0, y: 20 }}
          animate={{ opacity: 1, y: 0 }}
          transition={{ delay: 0.5 }}
        >
          <h2 className="text-base font-semibold text-gray-800 mb-3 flex items-center gap-2">
            <Shield className="w-5 h-5 text-morandi-sage-500" />
            紧急联系人
          </h2>
          <Card className="bg-white rounded-2xl p-5 shadow-sm border-0">
            <div className="space-y-3">
              <div className="flex items-center justify-between">
                <div>
                  <div className="text-sm text-gray-500">姓名</div>
                  <div className="font-semibold text-gray-800">
                    {userInfo.emergencyContact.name}
                  </div>
                </div>
                <Badge className="bg-morandi-sage-100 text-morandi-sage-600 hover:bg-morandi-sage-100">
                  {userInfo.emergencyContact.relation}
                </Badge>
              </div>
              <div>
                <div className="text-sm text-gray-500">联系电话</div>
                <div className="font-semibold text-gray-800">
                  {userInfo.emergencyContact.phone}
                </div>
              </div>
            </div>
          </Card>
        </motion.div>

        {/* 退出登录 */}
        <motion.div
          initial={{ opacity: 0, y: 20 }}
          animate={{ opacity: 1, y: 0 }}
          transition={{ delay: 0.7 }}
        >
          <Button
            onClick={() => {
              logout();
              navigate("/");
            }}
            variant="outline"
            className="w-full border-red-200 text-red-600 hover:bg-red-50 hover:text-red-700 hover:border-red-300 rounded-2xl py-6"
          >
            <LogOut className="w-5 h-5 mr-2" />
            退出登录
          </Button>
        </motion.div>

        <div className="h-8"></div>
      </div>
    </div>
  );
}