"use client";

import { useState } from "react";
import { useRouter } from "next/navigation";
import { Loader2, Copy, KeyRound, Trash2, Check } from "lucide-react";
import { toast } from "sonner";
import { Button } from "@/components/ui/button";
import { Input } from "@/components/ui/input";
import { Card, CardContent } from "@/components/ui/card";
import { createApiKeyAction, revokeApiKeyAction } from "@/app/(app)/api-keys/actions";

interface KeyRow {
  id: string;
  name: string;
  prefix: string;
  lastUsedAt: string | null;
  createdAt: string;
}

export function ApiKeysClient({ keys }: { keys: KeyRow[] }) {
  const router = useRouter();
  const [name, setName] = useState("");
  const [creating, setCreating] = useState(false);
  const [newKey, setNewKey] = useState<string | null>(null);

  async function create(e: React.FormEvent) {
    e.preventDefault();
    setCreating(true);
    const res = await createApiKeyAction(name);
    setCreating(false);
    if (!res.ok || !res.key) {
      toast.error(res.error ?? "Could not create");
      return;
    }
    setNewKey(res.key);
    setName("");
    router.refresh();
  }

  async function revoke(id: string) {
    if (!confirm("Revoke this key? Apps using it will stop working.")) return;
    const res = await revokeApiKeyAction(id);
    if (res.ok) {
      toast.success("Key revoked");
      router.refresh();
    } else {
      toast.error(res.error ?? "Could not revoke");
    }
  }

  return (
    <div className="max-w-2xl space-y-6">
      {newKey && (
        <Card className="ring-2 ring-brand">
          <CardContent className="space-y-2 py-4">
            <p className="text-sm font-medium">Your new API key — copy it now, it won&apos;t be shown again.</p>
            <div className="flex items-center gap-2">
              <code className="flex-1 truncate rounded-lg bg-secondary px-2.5 py-1.5 text-xs">{newKey}</code>
              <Button
                size="sm"
                variant="outline"
                onClick={() => {
                  navigator.clipboard.writeText(newKey);
                  toast.success("Copied");
                }}
              >
                <Copy className="h-4 w-4" /> Copy
              </Button>
            </div>
          </CardContent>
        </Card>
      )}

      <Card>
        <CardContent className="py-4">
          <form onSubmit={create} className="flex gap-2">
            <Input
              placeholder="Key name (e.g. Production)"
              value={name}
              onChange={(e) => setName(e.target.value)}
            />
            <Button type="submit" disabled={creating}>
              {creating ? <Loader2 className="h-4 w-4 animate-spin" /> : <KeyRound className="h-4 w-4" />}
              Create key
            </Button>
          </form>
        </CardContent>
      </Card>

      {keys.length === 0 ? (
        <p className="text-center text-sm text-muted-foreground">No API keys yet.</p>
      ) : (
        <div className="divide-y rounded-lg border">
          {keys.map((k) => (
            <div key={k.id} className="flex items-center justify-between gap-3 p-4">
              <div className="min-w-0">
                <p className="font-medium">{k.name}</p>
                <p className="text-xs text-muted-foreground">
                  <code>{k.prefix}</code> · created {new Date(k.createdAt).toLocaleDateString()}
                  {k.lastUsedAt ? ` · last used ${new Date(k.lastUsedAt).toLocaleDateString()}` : " · never used"}
                </p>
              </div>
              <Button variant="ghost" size="sm" className="text-destructive" onClick={() => revoke(k.id)}>
                <Trash2 className="h-4 w-4" /> Revoke
              </Button>
            </div>
          ))}
        </div>
      )}
    </div>
  );
}