import { request, BASE } from "./client";

// ── Types ────────────────────────────────────────────────────────────────────

export interface RegisterRequest {
  email: string;
  password: string;
  display_name: string;
  invite_code: string;
  creator_slug?: string | null;
}

export interface LoginRequest {
  email: string;
  password: string;
}

export interface TokenResponse {
  access_token: string;
  token_type: string;
}

export interface UserResponse {
  id: string;
  email: string;
  display_name: string;
  role: string;
  creator_id: string | null;
  is_active: boolean;
  created_at: string;
  impersonating?: boolean;
}

export interface UserListItem {
  id: string;
  email: string;
  display_name: string;
  role: string;
  creator_id: string | null;
  is_active: boolean;
}

export interface ImpersonateResponse {
  access_token: string;
  token_type: string;
  target_user: UserListItem;
}

export interface UpdateProfileRequest {
  display_name?: string | null;
  current_password?: string | null;
  new_password?: string | null;
}

// ── Functions ────────────────────────────────────────────────────────────────

export async function authRegister(data: RegisterRequest): Promise<UserResponse> {
  return request<UserResponse>(`${BASE}/auth/register`, {
    method: "POST",
    body: JSON.stringify(data),
  });
}

export async function authLogin(email: string, password: string): Promise<TokenResponse> {
  return request<TokenResponse>(`${BASE}/auth/login`, {
    method: "POST",
    body: JSON.stringify({ email, password }),
  });
}

export async function authGetMe(token: string): Promise<UserResponse> {
  return request<UserResponse>(`${BASE}/auth/me`, {
    headers: { Authorization: `Bearer ${token}` },
  });
}

export async function authUpdateProfile(
  token: string,
  data: UpdateProfileRequest,
): Promise<UserResponse> {
  return request<UserResponse>(`${BASE}/auth/me`, {
    method: "PUT",
    headers: { Authorization: `Bearer ${token}` },
    body: JSON.stringify(data),
  });
}

// ── Admin: Impersonation ─────────────────────────────────────────────────────

export async function fetchUsers(token: string): Promise<UserListItem[]> {
  return request<UserListItem[]>(`${BASE}/admin/users`, {
    headers: { Authorization: `Bearer ${token}` },
  });
}

export interface ImpersonationLogEntry {
  id: number;
  admin_name: string;
  target_name: string;
  action: string;
  write_mode: boolean;
  ip_address: string | null;
  created_at: string;
}

export async function impersonateUser(
  token: string,
  userId: string,
  writeMode?: boolean,
): Promise<ImpersonateResponse> {
  const opts: RequestInit = {
    method: "POST",
    headers: { Authorization: `Bearer ${token}` },
  };
  if (writeMode) {
    (opts.headers as Record<string, string>)["Content-Type"] = "application/json";
    opts.body = JSON.stringify({ write_mode: true });
  }
  return request<ImpersonateResponse>(
    `${BASE}/admin/impersonate/${userId}`,
    opts,
  );
}

export async function fetchImpersonationLog(
  token: string,
  page: number = 1,
): Promise<ImpersonationLogEntry[]> {
  return request<ImpersonationLogEntry[]>(
    `${BASE}/admin/impersonation-log?page=${page}`,
    { headers: { Authorization: `Bearer ${token}` } },
  );
}

export async function stopImpersonation(
  token: string,
): Promise<{ message: string }> {
  return request<{ message: string }>(`${BASE}/admin/impersonate/stop`, {
    method: "POST",
    headers: { Authorization: `Bearer ${token}` },
  });
}