'use client';

import { useEffect, useState } from 'react';
import { ApiProvider } from '@prisma/client';

type ApiKeyRecord = {
  id: string;
  provider: ApiProvider;
  label: string | null;
  isActive: boolean;
  lastUsedAt: string | null;
  createdAt: string;
  maskedKey: string;
};

const providers: ApiProvider[] = ['NEWSAPI', 'GNEWS', 'NEWSDATA', 'KIMI', 'WEBSEARCH', 'BRAVE'];

export default function ApiKeysPage() {
  const [keys, setKeys] = useState<ApiKeyRecord[]>([]);
  const [loading, setLoading] = useState(true);
  const [form, setForm] = useState({ provider: 'KIMI' as ApiProvider, key: '', label: '' });

  async function fetchKeys() {
    const res = await fetch('/api/admin/keys');
    if (res.ok) setKeys(await res.json());
    setLoading(false);
  }

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

  async function handleSubmit(e: React.FormEvent) {
    e.preventDefault();
    const res = await fetch('/api/admin/keys', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify(form),
    });
    if (res.ok) {
      setForm({ provider: 'KIMI', key: '', label: '' });
      fetchKeys();
    } else {
      const data = await res.json();
      alert(data.error || 'Failed to add key');
    }
  }

  async function toggleActive(id: string, current: boolean) {
    const res = await fetch(`/api/admin/keys/${id}`, {
      method: 'PATCH',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ isActive: !current }),
    });
    if (res.ok) fetchKeys();
  }

  async function removeKey(id: string) {
    if (!confirm('Delete this API key?')) return;
    const res = await fetch(`/api/admin/keys/${id}`, { method: 'DELETE' });
    if (res.ok) fetchKeys();
  }

  return (
    <div>
      <h1 className="text-2xl font-bold mb-6">API Keys</h1>

      <div className="bg-white dark:bg-neutral-900 rounded-xl shadow-sm border dark:border-neutral-800 p-6 mb-6">
        <h2 className="text-lg font-semibold mb-4">Add New Key</h2>
        <form onSubmit={handleSubmit} className="grid grid-cols-1 md:grid-cols-4 gap-4 items-end">
          <div>
            <label className="block text-sm font-medium mb-1">Provider</label>
            <select
              value={form.provider}
              onChange={(e) => setForm({ ...form, provider: e.target.value as ApiProvider })}
              className="w-full px-3 py-2 border rounded-lg dark:bg-neutral-800 dark:border-neutral-700"
            >
              {providers.map((p) => (
                <option key={p} value={p}>
                  {p}
                </option>
              ))}
            </select>
          </div>
          <div className="md:col-span-2">
            <label className="block text-sm font-medium mb-1">Key</label>
            <input
              type="password"
              value={form.key}
              onChange={(e) => setForm({ ...form, key: e.target.value })}
              className="w-full px-3 py-2 border rounded-lg dark:bg-neutral-800 dark:border-neutral-700"
              placeholder="Paste key here"
              required
            />
          </div>
          <div>
            <label className="block text-sm font-medium mb-1">Label</label>
            <input
              type="text"
              value={form.label}
              onChange={(e) => setForm({ ...form, label: e.target.value })}
              className="w-full px-3 py-2 border rounded-lg dark:bg-neutral-800 dark:border-neutral-700"
              placeholder="Optional"
            />
          </div>
          <div className="md:col-span-4">
            <button
              type="submit"
              className="px-4 py-2 bg-blue-600 hover:bg-blue-700 text-white rounded-lg font-medium"
            >
              Add Key
            </button>
          </div>
        </form>
      </div>

      {loading ? (
        <p>Loading...</p>
      ) : (
        <div className="bg-white dark:bg-neutral-900 rounded-xl shadow-sm border dark:border-neutral-800 overflow-hidden">
          <table className="w-full text-sm">
            <thead className="bg-neutral-50 dark:bg-neutral-800">
              <tr>
                <th className="px-4 py-3 text-left">Provider</th>
                <th className="px-4 py-3 text-left">Label</th>
                <th className="px-4 py-3 text-left">Status</th>
                <th className="px-4 py-3 text-left">Added</th>
                <th className="px-4 py-3 text-right">Actions</th>
              </tr>
            </thead>
            <tbody>
              {keys.map((k) => (
                <tr key={k.id} className="border-t dark:border-neutral-800">
                  <td className="px-4 py-3 font-medium">{k.provider}</td>
                  <td className="px-4 py-3">{k.label || '-'}</td>
                  <td className="px-4 py-3">
                    <span
                      className={`inline-flex px-2 py-1 rounded-full text-xs font-medium ${
                        k.isActive
                          ? 'bg-green-100 text-green-800 dark:bg-green-950 dark:text-green-300'
                          : 'bg-neutral-100 text-neutral-600 dark:bg-neutral-800 dark:text-neutral-400'
                      }`}
                    >
                      {k.isActive ? 'Active' : 'Inactive'}
                    </span>
                  </td>
                  <td className="px-4 py-3 text-neutral-500 dark:text-neutral-400">
                    {new Date(k.createdAt).toLocaleDateString()}
                  </td>
                  <td className="px-4 py-3 text-right space-x-2">
                    <button
                      onClick={() => toggleActive(k.id, k.isActive)}
                      className="text-blue-600 hover:underline"
                    >
                      {k.isActive ? 'Disable' : 'Enable'}
                    </button>
                    <button
                      onClick={() => removeKey(k.id)}
                      className="text-red-600 hover:underline"
                    >
                      Delete
                    </button>
                  </td>
                </tr>
              ))}
              {keys.length === 0 && (
                <tr>
                  <td colSpan={5} className="px-4 py-8 text-center text-neutral-500">
                    No API keys configured yet.
                  </td>
                </tr>
              )}
            </tbody>
          </table>
        </div>
      )}
    </div>
  );
}