"use client";

import { useEffect, useState, useCallback } from "react";
import { createClient } from "@/lib/supabase/client";
import Card from "@/components/ui/Card";
import { Table, Td, EmptyRow } from "@/components/ui/Table";
import Badge, { statusTone } from "@/components/ui/Badge";
import Spinner from "@/components/ui/Spinner";
import { formatDate } from "@/lib/format";

export default function MyApplications() {
  const supabase = createClient();
  const [loading, setLoading] = useState(true);
  const [rows, setRows] = useState<any[]>([]);

  const load = useCallback(async () => {
    const { data: u } = await supabase.auth.getUser();
    if (!u.user) return;
    const { data } = await supabase
      .from("applications")
      .select("id, status, applied_at, reviewed_at, programs(title, venue, start_at)")
      .eq("volunteer_id", u.user.id)
      .order("applied_at", { ascending: false });
    setRows(data ?? []);
    setLoading(false);
  }, [supabase]);

  useEffect(() => {
    load();
  }, [load]);

  if (loading) return <Spinner label="Loading your applications…" />;

  return (
    <div className="space-y-6">
      <div>
        <h1 className="text-2xl font-extrabold text-ink">My Applications</h1>
        <p className="text-sm text-muted">Track the status of every program you applied to.</p>
      </div>

      <Card>
        <Table headers={["Program", "Venue", "Date", "Applied", "Status"]}>
          {rows.length === 0 ? (
            <EmptyRow colSpan={5} message="You haven't applied to any programs yet." />
          ) : (
            rows.map((r) => (
              <tr key={r.id}>
                <Td className="font-semibold">{r.programs?.title ?? "—"}</Td>
                <Td>{r.programs?.venue ?? "—"}</Td>
                <Td>{formatDate(r.programs?.start_at)}</Td>
                <Td>{formatDate(r.applied_at)}</Td>
                <Td>
                  <Badge tone={statusTone(r.status)}>{r.status}</Badge>
                </Td>
              </tr>
            ))
          )}
        </Table>
      </Card>
    </div>
  );
}