"use client";

import { useEffect, useState, Suspense } from "react";
import { useSearchParams, useRouter } from "next/navigation";
import { Button } from "@/components/ui/button";
import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
import { Table, TableBody, TableCell, TableHead, TableHeader, TableRow } from "@/components/ui/table";
import { Plus, ArrowLeft, FileText } from "lucide-react";
import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogTrigger, DialogFooter } from "@/components/ui/dialog";
import { Input } from "@/components/ui/input";
import { Label } from "@/components/ui/label";
import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select";
import { toast } from "sonner";
import { useSchool } from "@/hooks/use-school";
import Link from "next/link";

interface Penilaian {
  id: string;
  judul: string;
  tanggal: string;
  jenis: string;
  _count: { nilaiHarians: number };
}

function ManagePenilaianContent() {
  const searchParams = useSearchParams();
  const router = useRouter();
  const { school } = useSchool();

  const rombelId = searchParams.get("rombelId");
  const mapelId = searchParams.get("mapelId");
  const guruId = searchParams.get("guruId");
  const rombelName = searchParams.get("rombelName");
  const mapelName = searchParams.get("mapelName");

  const [data, setData] = useState<Penilaian[]>([]);
  const [loading, setLoading] = useState(true);
  const [isDialogOpen, setIsDialogOpen] = useState(false);
  const [saving, setSaving] = useState(false);

  const [formData, setFormData] = useState({
    judul: "",
    tanggal: new Date().toISOString().split("T")[0],
    jenis: "UH",
    keterangan: "",
  });

  useEffect(() => {
    if (rombelId && mapelId) {
      fetchData();
    }
  }, [rombelId, mapelId]);

  const fetchData = async () => {
    try {
      setLoading(true);
      const res = await fetch(`/api/guru/penilaian?rombelId=${rombelId}&mapelId=${mapelId}&guruId=${guruId}`);
      const json = await res.json();
      if (json.success) setData(json.data);
    } catch (error) {
      console.error(error);
    } finally {
      setLoading(false);
    }
  };

  const handleCreate = async (e: React.FormEvent) => {
    e.preventDefault();
    if (!school) return;
    setSaving(true);
    try {
      const res = await fetch("/api/guru/penilaian", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({
          ...formData,
          rombelId,
          mapelId,
          guruId,
          tahunPelajaran: school.tahunPelajaran,
          semester: "GANJIL", // Should be dynamic
        }),
      });
      const json = await res.json();
      if (json.success) {
        toast.success("Penilaian berhasil dibuat");
        setIsDialogOpen(false);
        fetchData();
        // Redirect to input scores
        router.push(`/dashboard/guru/penilaian/${json.data.id}`);
      } else {
        toast.error(json.message);
      }
    } catch (error) {
      toast.error("Gagal membuat penilaian");
    } finally {
      setSaving(false);
    }
  };

  if (!rombelId || !mapelId) return <div>Missing params</div>;

  return (
    <div className="space-y-6">
      <div className="flex items-center gap-4">
        <Button variant="ghost" onClick={() => router.back()}>
          <ArrowLeft className="mr-2 h-4 w-4" /> Kembali
        </Button>
        <div>
          <h1 className="text-2xl font-bold">Penilaian Harian</h1>
          <p className="text-muted-foreground">
            {mapelName} - {rombelName}
          </p>
        </div>
      </div>

      <div className="flex justify-end">
        <Dialog open={isDialogOpen} onOpenChange={setIsDialogOpen}>
          <DialogTrigger asChild>
            <Button>
              <Plus className="mr-2 h-4 w-4" /> Buat Penilaian
            </Button>
          </DialogTrigger>
          <DialogContent>
            <DialogHeader>
              <DialogTitle>Buat Penilaian Baru</DialogTitle>
            </DialogHeader>
            <form onSubmit={handleCreate} className="space-y-4 py-4">
              <div className="space-y-2">
                <Label>Judul</Label>
                <Input
                  placeholder="Contoh: Ulangan Harian 1"
                  value={formData.judul}
                  onChange={(e) => setFormData({ ...formData, judul: e.target.value })}
                  required
                />
              </div>
              <div className="space-y-2">
                <Label>Tanggal</Label>
                <Input
                  type="date"
                  value={formData.tanggal}
                  onChange={(e) => setFormData({ ...formData, tanggal: e.target.value })}
                  required
                />
              </div>
              <div className="space-y-2">
                <Label>Jenis</Label>
                <Select value={formData.jenis} onValueChange={(v) => setFormData({ ...formData, jenis: v })}>
                  <SelectTrigger>
                    <SelectValue />
                  </SelectTrigger>
                  <SelectContent>
                    <SelectItem value="UH">Ulangan Harian</SelectItem>
                    <SelectItem value="TUGAS">Tugas</SelectItem>
                    <SelectItem value="UTS">UTS</SelectItem>
                    <SelectItem value="UAS">UAS</SelectItem>
                    <SelectItem value="PRAKTIK">Praktik</SelectItem>
                    <SelectItem value="PROYEK">Proyek</SelectItem>
                  </SelectContent>
                </Select>
              </div>
              <div className="space-y-2">
                <Label>Keterangan</Label>
                <Input
                  value={formData.keterangan}
                  onChange={(e) => setFormData({ ...formData, keterangan: e.target.value })}
                />
              </div>
              <DialogFooter>
                <Button type="submit" disabled={saving}>
                  {saving ? "Menyimpan..." : "Simpan"}
                </Button>
              </DialogFooter>
            </form>
          </DialogContent>
        </Dialog>
      </div>

      <Card>
        <CardHeader>
          <CardTitle>Riwayat Penilaian</CardTitle>
        </CardHeader>
        <CardContent>
          <Table>
            <TableHeader>
              <TableRow>
                <TableHead>Tanggal</TableHead>
                <TableHead>Judul</TableHead>
                <TableHead>Jenis</TableHead>
                <TableHead>Jumlah Nilai</TableHead>
                <TableHead className="text-right">Aksi</TableHead>
              </TableRow>
            </TableHeader>
            <TableBody>
              {data.map((item) => (
                <TableRow key={item.id}>
                  <TableCell>{new Date(item.tanggal).toLocaleDateString("id-ID")}</TableCell>
                  <TableCell className="font-medium">{item.judul}</TableCell>
                  <TableCell>{item.jenis}</TableCell>
                  <TableCell>{item._count.nilaiHarians} Siswa Dinilai</TableCell>
                  <TableCell className="text-right">
                    <Button variant="outline" size="sm" asChild>
                      <Link href={`/dashboard/guru/penilaian/${item.id}`}>
                        <FileText className="mr-2 h-4 w-4" /> Input Nilai
                      </Link>
                    </Button>
                  </TableCell>
                </TableRow>
              ))}
              {data.length === 0 && (
                <TableRow>
                  <TableCell colSpan={5} className="text-muted-foreground py-8 text-center">
                    Belum ada penilaian
                  </TableCell>
                </TableRow>
              )}
            </TableBody>
          </Table>
        </CardContent>
      </Card>
    </div>
  );
}

export default function ManagePenilaianPage() {
  return (
    <div className="p-6">
      <Suspense fallback={<div>Loading...</div>}>
        <ManagePenilaianContent />
      </Suspense>
    </div>
  );
}