"use client";

import { useState, useEffect } from "react";
import { useSession } from "next-auth/react";
import Card from "@/components/ui/Card";
import Button from "@/components/ui/Button";
import SectionTitle from "@/components/ui/SectionTitle";
import BackgroundSection from "@/components/ui/BackgroundSection";
import HouseCard from "./HouseCard";
import HouseForm from "./HouseForm";
import HouseManagement from "./HouseManagement";
import InvitationList from "./InvitationList";
import Input from "@/components/ui/Input";

interface House {
  id: string;
  name: string;
  description: string | null;
  creator: {
    id: string;
    username: string;
    avatar: string | null;
  };
  memberships?: Array<{
    id: string;
    role: string;
    user: {
      id: string;
      username: string;
      avatar: string | null;
      score?: number;
      level?: number;
    };
  }>;
  _count?: {
    memberships: number;
  };
}

interface User {
  id: string;
  username: string;
  avatar: string | null;
}

interface HousesSectionProps {
  initialHouses?: House[];
  initialMyHouse?: House | null;
  initialUsers?: User[];
  initialInvitations?: Array<{
    id: string;
    house: {
      id: string;
      name: string;
    };
    inviter: {
      id: string;
      username: string;
      avatar: string | null;
    };
    status: string;
    createdAt: string;
  }>;
  backgroundImage: string;
}

export default function HousesSection({
  initialHouses = [],
  initialMyHouse = null,
  initialUsers = [],
  initialInvitations = [],
  backgroundImage,
}: HousesSectionProps) {
  const { data: session } = useSession();
  const [houses, setHouses] = useState<House[]>(initialHouses);
  const [myHouse, setMyHouse] = useState<House | null>(initialMyHouse);
  const [invitations, setInvitations] = useState(initialInvitations);
  const [showCreateForm, setShowCreateForm] = useState(false);
  const [searchTerm, setSearchTerm] = useState("");

  const fetchHouses = async () => {
    try {
      const params = new URLSearchParams();
      if (searchTerm) {
        params.append("search", searchTerm);
      }
      params.append("include", "members,creator");

      const response = await fetch(`/api/houses?${params}`);
      if (response.ok) {
        const data = await response.json();
        setHouses(data);
      }
    } catch (error) {
      console.error("Error fetching houses:", error);
    }
  };

  const fetchMyHouse = async () => {
    try {
      const response = await fetch("/api/houses/my-house");
      if (response.ok) {
        const data = await response.json();
        setMyHouse(data);
      } else if (response.status === 404) {
        setMyHouse(null);
      }
    } catch (error) {
      console.error("Error fetching my house:", error);
    }
  };

  const fetchInvitations = async () => {
    try {
      const response = await fetch("/api/invitations?status=PENDING");
      if (response.ok) {
        const data = await response.json();
        setInvitations(data);
      }
    } catch (error) {
      console.error("Error fetching invitations:", error);
    }
  };

  useEffect(() => {
    if (searchTerm) {
      const timeout = setTimeout(() => {
        fetchHouses();
      }, 300);
      return () => clearTimeout(timeout);
    } else {
      fetchHouses();
    }
  }, [searchTerm]);

  const handleUpdate = () => {
    fetchMyHouse();
    fetchHouses();
    fetchInvitations();
  };

  const filteredHouses = houses.filter((house) => {
    if (!myHouse) return true;
    return house.id !== myHouse.id;
  });

  return (
    <BackgroundSection backgroundImage={backgroundImage}>
      {/* Title Section */}
      <SectionTitle
        variant="gradient"
        size="lg"
        subtitle="Rejoignez une maison ou créez la vôtre"
        className="mb-12 overflow-hidden"
      >
        MAISONS
      </SectionTitle>

      <div className="space-y-4 sm:space-y-6">
        {session?.user && (
          <>
            {invitations.length > 0 && (
              <Card className="p-4 sm:p-6">
                <SectionTitle>Mes Invitations</SectionTitle>
                <InvitationList invitations={invitations} onUpdate={handleUpdate} />
              </Card>
            )}

            <Card className="p-4 sm:p-6">
              <SectionTitle>Ma Maison</SectionTitle>
              {myHouse ? (
                <HouseManagement
                  house={myHouse}
                  users={initialUsers}
                  onUpdate={handleUpdate}
                />
              ) : (
                <div>
                  {showCreateForm ? (
                    <HouseForm
                      onSuccess={() => {
                        setShowCreateForm(false);
                        handleUpdate();
                      }}
                      onCancel={() => setShowCreateForm(false)}
                    />
                  ) : (
                    <div>
                      <p className="text-sm mb-4 break-words" style={{ color: "var(--muted-foreground)" }}>
                        Vous n'êtes membre d'aucune maison. Créez-en une ou demandez à rejoindre une maison existante.
                      </p>
                      <Button
                        onClick={() => setShowCreateForm(true)}
                        variant="primary"
                        className="w-full sm:w-auto"
                      >
                        Créer une maison
                      </Button>
                    </div>
                  )}
                </div>
              )}
            </Card>
          </>
        )}

        <Card className="p-4 sm:p-6">
          <SectionTitle>Toutes les Maisons</SectionTitle>
          <div className="mb-4">
            <Input
              placeholder="Rechercher une maison..."
              value={searchTerm}
              onChange={(e) => setSearchTerm(e.target.value)}
            />
          </div>
          {filteredHouses.length === 0 ? (
            <p className="text-sm" style={{ color: "var(--muted-foreground)" }}>
              Aucune maison trouvée
            </p>
          ) : (
            <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
              {filteredHouses.map((house) => (
                <HouseCard
                  key={house.id}
                  house={house}
                  onRequestSent={handleUpdate}
                />
              ))}
            </div>
          )}
        </Card>
      </div>
    </BackgroundSection>
  );
}