"use client";

import { Plus, Trash2 } from "lucide-react";
import { useRouter } from "next/navigation";
import { useState } from "react";
import { deleteEmployeeDependent } from "@/actions/employees";
import { Button } from "@/components/ui/Button";
import { useToast } from "@/components/ui/Toast";
import { fmtDate, todayIso } from "@/lib/format";
import type { Database } from "@/lib/supabase/types";
import { AddDependentModal } from "./AddDependentModal";

type Dependent = Database["public"]["Tables"]["employee_dependents"]["Row"];

// `effectiveDate` lets DatenAendernPanel embed this section and drive
// add/remove off its own "Wirksam ab" field; standalone usage (Stammdaten
// tab) omits it and defaults to today, i.e. immediate.
export function AngehoerigeSection({ employeeId, dependents, effectiveDate }: { employeeId: string; dependents: Dependent[]; effectiveDate?: string }) {
  const { showToast } = useToast();
  const router = useRouter();
  const [modalOpen, setModalOpen] = useState(false);
  const [deletingId, setDeletingId] = useState<string | null>(null);
  const resolvedEffectiveDate = effectiveDate || todayIso();

  async function handleDelete(dependentId: string) {
    setDeletingId(dependentId);
    const result = await deleteEmployeeDependent({ dependent_id: dependentId, employee_id: employeeId, effective_date: resolvedEffectiveDate });
    setDeletingId(null);
    if (result.success) {
      showToast("Angehörige:r entfernt.");
      router.refresh();
    } else {
      showToast(result.error ?? "Fehler beim Entfernen.", "error");
    }
  }

  return (
    <div className="border-t border-border pt-6">
      <div className="mb-3 flex items-center justify-between">
        <h3 className="text-xs font-bold uppercase tracking-wide text-brand-700">Angehörige</h3>
        <div className="flex items-center gap-4">
          <Button variant="ghost" size="sm" onClick={() => setModalOpen(true)} className="!px-1 text-brand-700 hover:!bg-transparent hover:underline">
            <Plus className="h-3.5 w-3.5" /> Hinzufügen
          </Button>
          <span className="text-xs text-ink-muted">{dependents.length} Personen</span>
        </div>
      </div>

      {dependents.length === 0 ? (
        <p className="text-sm text-ink-muted">Keine Angehörigen hinterlegt.</p>
      ) : (
        <div className="overflow-x-auto rounded border border-border">
          <table className="w-full min-w-[600px] text-sm">
            <thead>
              <tr className="border-b border-border bg-brand-50 text-left text-xs font-semibold uppercase tracking-wide text-ink-muted">
                <th className="px-4 py-2.5">Name</th>
                <th className="px-4 py-2.5">Verhältnis</th>
                <th className="px-4 py-2.5">SVNR</th>
                <th className="px-4 py-2.5">Geburtsdatum</th>
                <th className="px-4 py-2.5" />
              </tr>
            </thead>
            <tbody>
              {dependents.map((d) => (
                <tr key={d.id} className="border-b border-border last:border-0">
                  <td className="px-4 py-2.5 font-semibold text-ink">
                    {d.first_name} {d.last_name}
                  </td>
                  <td className="px-4 py-2.5 text-ink-body">{d.relationship}</td>
                  <td className="px-4 py-2.5 text-ink-body">{d.sv_nummer ?? "–"}</td>
                  <td className="px-4 py-2.5 text-ink-body">{fmtDate(d.birth_date)}</td>
                  <td className="px-4 py-2.5 text-right">
                    <Button
                      variant="icon"
                      onClick={() => handleDelete(d.id)}
                      pending={deletingId === d.id}
                      aria-label={`${d.first_name} ${d.last_name} als Angehörige:n entfernen`}
                      className="hover:!text-danger-solid"
                    >
                      <Trash2 className="h-3.5 w-3.5" />
                    </Button>
                  </td>
                </tr>
              ))}
            </tbody>
          </table>
        </div>
      )}

      <AddDependentModal open={modalOpen} onClose={() => setModalOpen(false)} employeeId={employeeId} defaultEffectiveDate={resolvedEffectiveDate} />
    </div>
  );
}