import { ADMIN_BASE, request } from "./client";
import type {
  AnalyticsSummary,
  Consumer,
  ConsumerCreate,
  ConsumerUpdate,
  EventCreate,
  EventFilters,
  EventListResponse,
  EventRecord,
  EventUpdate,
  ParseJob,
  ParseJobCreate,
  ParseJobUpdate,
  TimelinePoint,
  TopItem,
  VpnSettings,
  VpnSettingsUpdate,
} from "../types/admin";

function buildQuery(params: Record<string, string | number | undefined>): string {
  const search = new URLSearchParams();
  for (const [key, value] of Object.entries(params)) {
    if (value !== undefined && value !== "") {
      search.set(key, String(value));
    }
  }
  const qs = search.toString();
  return qs ? `?${qs}` : "";
}

export function fetchJobs(): Promise<ParseJob[]> {
  return request<ParseJob[]>("/jobs", undefined, ADMIN_BASE);
}

export function createJob(payload: ParseJobCreate): Promise<ParseJob> {
  return request<ParseJob>(
    "/jobs",
    { method: "POST", body: JSON.stringify(payload) },
    ADMIN_BASE,
  );
}

export function retryJob(jobId: number): Promise<ParseJob> {
  return request<ParseJob>(
    `/jobs/${jobId}/retry`,
    { method: "POST" },
    ADMIN_BASE,
  );
}

export function updateJob(jobId: number, payload: ParseJobUpdate): Promise<ParseJob> {
  return request<ParseJob>(
    `/jobs/${jobId}`,
    { method: "PATCH", body: JSON.stringify(payload) },
    ADMIN_BASE,
  );
}

export function deleteJob(jobId: number): Promise<void> {
  return request<void>(
    `/jobs/${jobId}`,
    { method: "DELETE" },
    ADMIN_BASE,
  );
}

export function fetchEvents(filters: EventFilters = {}): Promise<EventListResponse> {
  return request<EventListResponse>(
    `/events${buildQuery(filters as Record<string, string | number | undefined>)}`,
    undefined,
    ADMIN_BASE,
  );
}

export function createEvent(payload: EventCreate): Promise<EventRecord> {
  return request<EventRecord>(
    "/events",
    { method: "POST", body: JSON.stringify(payload) },
    ADMIN_BASE,
  );
}

export function updateEvent(id: number, payload: EventUpdate): Promise<EventRecord> {
  return request<EventRecord>(
    `/events/${id}`,
    { method: "PATCH", body: JSON.stringify(payload) },
    ADMIN_BASE,
  );
}

export function deleteEvent(id: number): Promise<void> {
  return request<void>(`/events/${id}`, { method: "DELETE" }, ADMIN_BASE);
}

export function fetchConsumers(): Promise<Consumer[]> {
  return request<Consumer[]>("/consumers", undefined, ADMIN_BASE);
}

export function createConsumer(payload: ConsumerCreate): Promise<Consumer> {
  return request<Consumer>(
    "/consumers",
    { method: "POST", body: JSON.stringify(payload) },
    ADMIN_BASE,
  );
}

export function updateConsumer(id: number, payload: ConsumerUpdate): Promise<Consumer> {
  return request<Consumer>(
    `/consumers/${id}`,
    { method: "PATCH", body: JSON.stringify(payload) },
    ADMIN_BASE,
  );
}

export function rotateConsumerKey(id: number): Promise<Consumer> {
  return request<Consumer>(
    `/consumers/${id}/rotate-key`,
    { method: "POST" },
    ADMIN_BASE,
  );
}

export function fetchAnalyticsSummary(): Promise<AnalyticsSummary> {
  return request<AnalyticsSummary>("/analytics/summary", undefined, ADMIN_BASE);
}

export function fetchAnalyticsTimeline(days = 30): Promise<TimelinePoint[]> {
  return request<TimelinePoint[]>(
    `/analytics/timeline${buildQuery({ days })}`,
    undefined,
    ADMIN_BASE,
  );
}

export function fetchTopLocalities(limit = 10): Promise<TopItem[]> {
  return request<TopItem[]>(
    `/analytics/top-localities${buildQuery({ limit })}`,
    undefined,
    ADMIN_BASE,
  );
}

export function fetchTopRegions(limit = 10): Promise<TopItem[]> {
  return request<TopItem[]>(
    `/analytics/top-regions${buildQuery({ limit })}`,
    undefined,
    ADMIN_BASE,
  );
}

export async function testDistribution(apiKey: string, limit = 5): Promise<EventRecord[]> {
  const response = await fetch(`/api/v1/events?limit=${limit}`, {
    headers: { Authorization: `Bearer ${apiKey}` },
  });
  if (!response.ok) {
    const message = await response.text();
    throw new Error(message || `Ошибка запроса: ${response.status}`);
  }
  return response.json() as Promise<EventRecord[]>;
}

export function fetchVpnSettings(): Promise<VpnSettings> {
  return request<VpnSettings>("/vpn", undefined, ADMIN_BASE);
}

export function updateVpnSettings(payload: VpnSettingsUpdate): Promise<VpnSettings> {
  return request<VpnSettings>(
    "/vpn",
    { method: "PUT", body: JSON.stringify(payload) },
    ADMIN_BASE,
  );
}