import { auth } from "@/lib/firebase";

const BASE = process.env.NEXT_PUBLIC_C2_URL ?? "http://localhost:8000";

async function request<T>(path: string, options?: RequestInit): Promise<T> {
  const user = auth.currentUser;
  const token = user ? await user.getIdToken() : null;

  const res = await fetch(`${BASE}${path}`, {
    ...options,
    headers: {
      "Content-Type": "application/json",
      ...(token ? { Authorization: `Bearer ${token}` } : {}),
      ...(options?.headers as Record<string, string> | undefined),
    },
  });
  if (!res.ok) throw new Error(`C2 API error ${res.status}: ${await res.text()}`);
  if (res.status === 204) return undefined as T;
  return res.json();
}

export const c2api = {
  // Nodes
  getNodes: () => request<unknown[]>("/nodes"),
  getNode: (id: string) => request<unknown>(`/nodes/${id}`),
  sendCommand: (nodeId: string, payload: object) =>
    request(`/nodes/${nodeId}/command`, { method: "POST", body: JSON.stringify(payload) }),
  assignSystem: (nodeId: string, systemId: string) =>
    request(`/nodes/${nodeId}/config/${systemId}`, { method: "POST" }),

  // Systems
  getSystems: () => request<unknown[]>("/systems"),
  createSystem: (body: object) =>
    request("/systems", { method: "POST", body: JSON.stringify(body) }),
  updateSystem: (id: string, body: object) =>
    request(`/systems/${id}`, { method: "PUT", body: JSON.stringify(body) }),
  deleteSystem: (id: string) =>
    request(`/systems/${id}`, { method: "DELETE" }),

  // Tokens
  getTokens: () => request<unknown[]>("/tokens"),
  addToken: (body: { name: string; token: string }) =>
    request("/tokens", { method: "POST", body: JSON.stringify(body) }),
  deleteToken: (id: string) =>
    request(`/tokens/${id}`, { method: "DELETE" }),

  // Node approval
  approveNode: (id: string) =>
    request(`/nodes/${id}/approve`, { method: "POST" }),
  rejectNode: (id: string) =>
    request(`/nodes/${id}/reject`, { method: "POST" }),

  // Calls
  getCalls: (params?: Record<string, string>) => {
    const qs = params ? "?" + new URLSearchParams(params).toString() : "";
    return request<unknown[]>(`/calls${qs}`);
  },
};