import Link from "next/link";
import { createApiKey, deleteApiKey, toggleApiKey } from "@/actions/admin-radio-api-keys";
import { StatusCard } from "@/components/admin/dashboard";
import { prisma } from "@/lib/prisma";
import { Key } from "lucide-react";

export const dynamic = "force-dynamic";

export const metadata = { title: "Radio API Keys" };

type ApiKey = {
  id: bigint;
  name: string;
  key: string;
  allowedIps: string | null;
  rateLimit: number;
  lastUsedAt: Date | null;
  expiresAt: Date | null;
  isActive: boolean;
  createdAt: Date | null;
};

function formatDate(d: Date | null): string {
  return d ? d.toISOString().slice(0, 16).replace("T", " ") : "—";
}

/** Show only the first 8 chars of the secret; the rest stays masked. */
function maskKey(key: string): string {
  return key.length > 8 ? `${key.slice(0, 8)}…` : key;
}

export default async function AdminRadioApiKeysPage() {
  let keys: ApiKey[] = [];
  let dbError = false;

  try {
    keys = await prisma.radioApiKeys
      .findMany({
        select: {
          id: true,
          name: true,
          key: true,
          allowedIps: true,
          rateLimit: true,
          lastUsedAt: true,
          expiresAt: true,
          isActive: true,
          createdAt: true,
        },
        orderBy: [{ isActive: "desc" }, { id: "desc" }],
        take: 500,
      })
      .catch(() => {
        dbError = true;
        return [];
      });
  } catch {
    dbError = true;
    keys = [];
  }

  const total = keys.length;
  const activeCount = keys.filter((k) => k.isActive).length;
  const inactiveCount = total - activeCount;

  return (
    <main>
      <nav className="text-xs text-gray-500 dark:text-gray-400 mb-2">
        <Link href="/admin/radio">Radio</Link> ·{" "}
        <Link href="/admin/radio/settings">Settings</Link> ·{" "}
        <Link href="/admin/radio/api-keys">API Keys</Link> ·{" "}
        <Link href="/admin/radio/autodj">AutoDJ</Link> ·{" "}
        <Link href="/admin/radio/embed">Embed</Link> ·{" "}
        <Link href="/admin/radio/points">Points</Link> ·{" "}
        <Link href="/admin/radio/monitoring">Monitoring</Link>
      </nav>

      <section className="mt-6">
        <div className="flex items-center gap-3 mb-6">
          <div className="w-10 h-10 rounded-xl bg-gradient-to-br from-[var(--color-primary)]/20 to-[var(--color-primary)]/5 grid place-items-center">
            <Key size={20} className="text-[var(--color-primary)]" />
          </div>
          <div>
            <h1 className="m-0 text-xl font-extrabold text-[var(--color-text)]">Radio API Keys</h1>
            <p className="m-0 text-xs text-[var(--color-text-muted)] mt-0.5">API keys for external radio integrations (<code>radio_api_keys</code>). Keys are generated server-side and shown masked — copy the full value from the database when first issued.</p>
          </div>
        </div>

        {dbError ? (
          <div className="admin-card" style={{ marginTop: "1rem" }}>
            <p className="text-xs text-gray-500 dark:text-gray-400 m-0">
              Could not load API keys (database unavailable).
            </p>
          </div>
        ) : (
          <div className="grid grid-cols-[repeat(auto-fit,minmax(180px,1fr))] gap-3.5 mb-6">
            <StatusCard label="Total keys" value={total} icon="🔑" />
            <StatusCard
              label="Active"
              value={activeCount}
              state={activeCount > 0 ? "ok" : "neutral"}
              icon="✅"
            />
            <StatusCard
              label="Inactive"
              value={inactiveCount}
              state={inactiveCount > 0 ? "warn" : "neutral"}
              icon="🚫"
            />
          </div>
        )}
      </section>

      <section className="mt-6">
        <h2>Generate key</h2>
        <p className="text-xs text-gray-500 dark:text-gray-400">
          The secret key is generated automatically with cryptographic randomness — you do not enter
          it.
        </p>
        <form action={createApiKey} className="admin-card">
          <div className="grid cols-2">
            <div>
              <label htmlFor="new_name" style={{ display: "block", fontWeight: 700 }}>
                Name
              </label>
              <input
                id="new_name"
                name="name"
                placeholder="AzureCast bridge"
                required
                maxLength={255}
                style={{ width: "100%" }}
              />
            </div>
            <div>
              <label htmlFor="new_rateLimit" style={{ display: "block", fontWeight: 700 }}>
                Rate limit (requests/min)
              </label>
              <input
                id="new_rateLimit"
                name="rateLimit"
                type="number"
                min={0}
                defaultValue={300}
                style={{ width: "100%" }}
              />
            </div>
            <div style={{ gridColumn: "1 / -1" }}>
              <label htmlFor="new_allowedIps" style={{ display: "block", fontWeight: 700 }}>
                Allowed IPs (optional)
              </label>
              <input
                id="new_allowedIps"
                name="allowedIps"
                placeholder="comma-separated, blank = any"
                maxLength={255}
                style={{ width: "100%" }}
              />
            </div>
          </div>
          <div style={{ marginTop: "0.75rem" }}>
            <button type="submit" className="btn btn-primary">
              Generate key
            </button>
          </div>
        </form>
      </section>

      <section className="mt-6">
        <h2 className="admin-section-title">Existing keys ({total})</h2>
        {total === 0 ? (
          <div className="admin-empty">No API keys yet — generate one above.</div>
        ) : (
          <div className="overflow-x-auto">
            <table>
              <thead>
                <tr>
                  <th>#</th>
                  <th>Name</th>
                  <th>Key</th>
                  <th>Allowed IPs</th>
                  <th>Rate limit</th>
                  <th>Last used</th>
                  <th>Expires</th>
                  <th>Status</th>
                  <th>Actions</th>
                </tr>
              </thead>
              <tbody>
                {keys.map((k) => (
                  <tr key={String(k.id)}>
                    <td className="text-sm text-gray-500 dark:text-gray-400 whitespace-nowrap">{String(k.id)}</td>
                    <td>{k.name}</td>
                    <td>
                      <code title="Only the first 8 characters are shown">{maskKey(k.key)}</code>
                    </td>
                    <td className="text-sm text-gray-500 dark:text-gray-400 whitespace-nowrap">{k.allowedIps || "any"}</td>
                    <td className="text-sm text-gray-500 dark:text-gray-400 whitespace-nowrap">{k.rateLimit}/min</td>
                    <td className="text-sm text-gray-500 dark:text-gray-400 whitespace-nowrap">{formatDate(k.lastUsedAt)}</td>
                    <td className="text-sm text-gray-500 dark:text-gray-400 whitespace-nowrap">{formatDate(k.expiresAt)}</td>
                    <td>
                      <span className={`inline-block text-[0.72rem] font-bold px-2 py-0.5 rounded-full ${k.isActive ? "bg-green-600/20 text-[var(--color-text)]" : "bg-red-500/22 text-[var(--color-text)]"}`}>
                        {k.isActive ? "active" : "inactive"}
                      </span>
                    </td>
                    <td>
                      <div style={{ display: "inline-flex", gap: "0.4rem" }}>
                        <form action={toggleApiKey}>
                          <input type="hidden" name="id" value={String(k.id)} />
                          <button type="submit" className="btn">
                            {k.isActive ? "Deactivate" : "Activate"}
                          </button>
                        </form>
                        <form action={deleteApiKey}>
                          <input type="hidden" name="id" value={String(k.id)} />
                          <button type="submit" className="btn btn-danger">
                            Delete
                          </button>
                        </form>
                      </div>
                    </td>
                  </tr>
                ))}
              </tbody>
            </table>
          </div>
        )}
      </section>
    </main>
  );
}