import { Search, Shield, Users } from 'lucide-react';
import { useMemo } from 'react';

import { Badge } from '@/components/ui/badge';
import {
    Card,
    CardDescription,
    CardHeader,
    CardTitle,
} from '@/components/ui/card';
import { isUserActive } from '@/lib/admin';
import type { AdminUser, RagConfig } from '@/types/admin';

export function AdminOverviewCards({
    ragConfig,
    users = [],
}: {
    ragConfig?: RagConfig | null;
    users?: AdminUser[];
}) {
    const userStats = useMemo(() => {
        const activeCount = users.filter(isUserActive).length;
        const adminCount = users.filter((user) => user.role === 'admin').length;

        return {
            activeCount,
            adminCount,
            total: users.length,
        };
    }, [users]);

    return (
        <section className="grid gap-4 md:grid-cols-3">
            <Card className="border-(--lecturer-border) bg-(--lecturer-surface)">
                <CardHeader className="gap-3">
                    <div className="flex items-center justify-between gap-3">
                        <span className="rounded-xl bg-[var(--lecturer-primary-soft)] p-3 text-[var(--lecturer-primary)]">
                            <Shield className="size-5" />
                        </span>
                        <Badge variant="outline">LLM</Badge>
                    </div>
                    <div>
                        <CardDescription>Model aktif</CardDescription>
                        <CardTitle className="mt-2 text-2xl">
                            {ragConfig?.llm_config?.active_model ?? '-'}
                        </CardTitle>
                    </div>
                </CardHeader>
            </Card>

            <Card className="border-(--lecturer-border) bg-(--lecturer-surface)">
                <CardHeader className="gap-3">
                    <div className="flex items-center justify-between gap-3">
                        <span className="rounded-xl bg-[var(--lecturer-primary-soft)] p-3 text-[var(--lecturer-primary)]">
                            <Search className="size-5" />
                        </span>
                        <Badge variant="outline">Retrieval</Badge>
                    </div>
                    <div>
                        <CardDescription>Top K</CardDescription>
                        <CardTitle className="mt-2 text-2xl">
                            {ragConfig?.retrieval?.top_k ?? '-'}
                        </CardTitle>
                    </div>
                </CardHeader>
            </Card>

            <Card className="border-(--lecturer-border) bg-(--lecturer-surface)">
                <CardHeader className="gap-3">
                    <div className="flex items-center justify-between gap-3">
                        <span className="rounded-xl bg-[var(--lecturer-primary-soft)] p-3 text-[var(--lecturer-primary)]">
                            <Users className="size-5" />
                        </span>
                        <Badge variant="outline">User</Badge>
                    </div>
                    <div>
                        <CardDescription>User aktif</CardDescription>
                        <CardTitle className="mt-2 text-2xl">
                            {userStats.activeCount}/{userStats.total}
                        </CardTitle>
                    </div>
                </CardHeader>
            </Card>
        </section>
    );
}