import { useQuery } from "@tanstack/react-query";
import {
  Briefcase,
  Building2,
  Fingerprint,
  Mail,
  Shield,
  User,
} from "lucide-react";
import { useState } from "react";
import { useAuth } from "react-oidc-context";
import {
  Card,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from "../../components/ui/card";
import { t } from "../../lib/i18n";
import { fetchMe } from "../auth/authApi";
import ProfileTenantSwitcher from "./ProfileTenantSwitcher";

function ProfilePage() {
  const auth = useAuth();
  const hasAccessToken = Boolean(auth.user?.access_token);

  const {
    data: profile,
    isLoading,
    error,
  } = useQuery({
    queryKey: ["userMe"],
    queryFn: fetchMe,
    enabled: hasAccessToken,
  });

  const [activeTab, setActiveTab] = useState<"basic" | "role">("basic");

  if (isLoading) {
    return (
      <div className="p-8 text-center">
        {t("ui.dev.profile.loading", "Loading profile...")}
      </div>
    );
  }

  if (error || !profile) {
    return (
      <div className="p-8 text-center text-red-500">
        {t("ui.dev.profile.error", "Failed to load profile information.")}
      </div>
    );
  }

  // Fallback to token information if API data is incomplete
  const displayTenant =
    profile.tenant?.name ||
    profile.tenantId ||
    auth.user?.profile?.tenant_id?.toString() ||
    "-";
  const displayCompanyCode =
    profile.companyCode || auth.user?.profile?.companyCode?.toString() || "-";

  return (
    <div className="space-y-6 max-w-4xl mx-auto">
      <div>
        <div className="flex items-center gap-3">
          <div className="mt-1 flex h-10 w-10 shrink-0 items-center justify-center rounded-xl border border-primary/15 bg-primary/10 text-primary">
            <User className="h-5 w-5" />
          </div>
          <h1 className="text-3xl font-semibold tracking-tight">
            {t("ui.dev.profile.title", "내 정보")}
          </h1>
        </div>
        <p className="text-muted-foreground mt-2">
          {t(
            "ui.dev.profile.subtitle",
            "사용자 상세 정보 및 할당된 역할(Role)을 확인합니다.",
          )}
        </p>
      </div>

      <div className="flex space-x-1 border-b border-border pb-px">
        <button
          type="button"
          onClick={() => setActiveTab("basic")}
          className={`px-4 py-2 text-sm font-medium border-b-2 transition-colors ${
            activeTab === "basic"
              ? "border-primary text-primary"
              : "border-transparent text-muted-foreground hover:text-foreground hover:border-border"
          }`}
        >
          {t("ui.dev.profile.tab.basic", "기본 정보")}
        </button>
        <button
          type="button"
          onClick={() => setActiveTab("role")}
          className={`px-4 py-2 text-sm font-medium border-b-2 transition-colors ${
            activeTab === "role"
              ? "border-primary text-primary"
              : "border-transparent text-muted-foreground hover:text-foreground hover:border-border"
          }`}
        >
          {t("ui.dev.profile.tab.role", "권한 및 역할")}
        </button>
      </div>

      <div className="pt-4">
        {activeTab === "basic" && (
          <div className="grid gap-6 md:grid-cols-2">
            <Card className="glass-panel">
              <CardHeader>
                <CardTitle className="text-lg flex items-center gap-2">
                  <User className="h-5 w-5 text-primary" />
                  {t("ui.dev.profile.basic.title", "사용자 정보")}
                </CardTitle>
              </CardHeader>
              <CardContent className="space-y-4">
                <div className="space-y-1">
                  <p className="text-sm font-medium text-muted-foreground flex items-center gap-2">
                    <Fingerprint className="h-4 w-4" />
                    {t("ui.dev.profile.basic.id", "User ID")}
                  </p>
                  <p className="text-sm break-all font-mono bg-muted/50 p-2 rounded-md">
                    {profile.id}
                  </p>
                </div>
                <div className="space-y-1">
                  <p className="text-sm font-medium text-muted-foreground flex items-center gap-2">
                    <User className="h-4 w-4" />
                    {t("ui.dev.profile.basic.name", "Name")}
                  </p>
                  <p className="text-sm">{profile.name}</p>
                </div>
                <div className="space-y-1">
                  <p className="text-sm font-medium text-muted-foreground flex items-center gap-2">
                    <Mail className="h-4 w-4" />
                    {t("ui.dev.profile.basic.email", "Email")}
                  </p>
                  <p className="text-sm">{profile.email}</p>
                </div>
                <div className="space-y-1">
                  <p className="text-sm font-medium text-muted-foreground flex items-center gap-2">
                    <Briefcase className="h-4 w-4" />
                    {t("ui.dev.profile.basic.phone", "Phone")}
                  </p>
                  <p className="text-sm">{profile.phone || "-"}</p>
                </div>
              </CardContent>
            </Card>

            <Card className="glass-panel">
              <CardHeader>
                <CardTitle className="text-lg flex items-center gap-2">
                  <Building2 className="h-5 w-5 text-primary" />
                  {t("ui.dev.profile.org.title", "조직 정보")}
                </CardTitle>
              </CardHeader>
              <CardContent className="space-y-4">
                <div className="space-y-1">
                  <p className="text-sm font-medium text-muted-foreground">
                    {t("ui.dev.profile.org.tenant", "테넌트")}
                  </p>
                  <p className="text-sm">{displayTenant}</p>
                </div>
                <div className="space-y-1">
                  <p className="text-sm font-medium text-muted-foreground">
                    {t("ui.dev.profile.org.company_code", "회사 코드")}
                  </p>
                  <p className="text-sm">{displayCompanyCode}</p>
                </div>
              </CardContent>
            </Card>

            <ProfileTenantSwitcher />
          </div>
        )}

        {activeTab === "role" && (
          <Card className="glass-panel">
            <CardHeader>
              <CardTitle className="text-lg flex items-center gap-2">
                <Shield className="h-5 w-5 text-primary" />
                {t("ui.dev.profile.role.title", "시스템 역할")}
              </CardTitle>
              <CardDescription>
                {t(
                  "ui.dev.profile.role.description",
                  "현재 계정에 부여된 권한 등급입니다.",
                )}
              </CardDescription>
            </CardHeader>
            <CardContent>
              <div className="flex items-center gap-4 bg-muted/30 p-4 rounded-lg border border-border">
                <div className="h-12 w-12 rounded-full bg-primary/20 flex items-center justify-center text-primary shrink-0">
                  <Briefcase className="h-6 w-6" />
                </div>
                <div className="flex flex-col gap-1 w-full">
                  <p className="text-sm text-muted-foreground font-medium uppercase tracking-wider">
                    {t("ui.dev.profile.role.current", "Current Role")}
                  </p>
                  <p className="text-xl font-bold mt-1">
                    {t(
                      `ui.common.role.${profile.role}`,
                      profile.role.toUpperCase(),
                    )}
                  </p>
                  <p className="mt-1 text-sm text-muted-foreground">
                    {t(
                      `ui.dev.profile.role.desc_${profile.role}`,
                      "시스템 역할에 대한 설명이 제공되지 않았습니다.",
                    )}
                  </p>
                </div>
              </div>
            </CardContent>
          </Card>
        )}
      </div>
    </div>
  );
}

export default ProfilePage;