import { Head, Link, router } from '@inertiajs/react';
import { Plus, Trash2 } from 'lucide-react';
import { useState } from 'react';
import { ConfirmDialog } from '@/components/admin/confirm-dialog';
import { DataTable, type Column } from '@/components/admin/data-table';
import { Button } from '@/components/ui/button';

interface Country { id: number; name: string; iso_code: string | null; flag: string | null; institutions_count: number }

interface Props { countries: { data: Country[]; meta: any; links: any[] }; filters: any }

export default function CountriesIndex({ countries }: Props) {
    const [confirmDeleteId, setConfirmDeleteId] = useState<number | null>(null);

    const columns: Column<Country>[] = [
        { key: 'name', label: 'Country', sortable: true, render: (c) => (<div className="flex items-center gap-2">{c.flag && <span className="text-lg">{c.flag}</span>}<span className="font-medium">{c.name}</span></div>) },
        { key: 'iso_code', label: 'ISO', className: 'hidden md:table-cell', render: (c) => <span className="font-mono text-muted-foreground">{c.iso_code ?? '—'}</span> },
        { key: 'institutions_count', label: 'Institutions', render: (c) => <span className="text-sm text-muted-foreground">{c.institutions_count}</span> },
        { key: 'actions', label: '', className: 'w-20 text-right', render: (c) => (<div className="flex justify-end gap-1"><Button variant="ghost" size="sm" asChild><Link href={`/admin/countries/${c.id}/edit`}>Edit</Link></Button><Button variant="ghost" size="icon" className="h-8 w-8 text-destructive hover:text-destructive" onClick={() => setConfirmDeleteId(c.id)}><Trash2 className="h-4 w-4" /></Button></div>) },
    ];

    return (
        <>
            <Head title="Countries" />
            <div className="space-y-6">
                <div className="flex items-center justify-between">
                    <div><h1 className="text-2xl font-bold">Countries</h1><p className="mt-1 text-sm text-muted-foreground">{countries.meta.total} countries</p></div>
                    <Button asChild><Link href="/admin/countries/create"><Plus className="mr-2 h-4 w-4" /> Add Country</Link></Button>
                </div>
                <DataTable data={countries.data} columns={columns} meta={countries.meta} links={countries.links} searchable searchPlaceholder="Search countries..." empty="No countries." />
            </div>
            <ConfirmDialog open={confirmDeleteId !== null} onOpenChange={(open) => !open && setConfirmDeleteId(null)} title="Delete country?" description="This is permanent." confirmLabel="Delete" variant="danger"
                onConfirm={() => confirmDeleteId !== null && router.delete(`/admin/countries/${confirmDeleteId}`, { onSuccess: () => setConfirmDeleteId(null) })} />
        </>
    );
}
