import type {
  Connection,
  Pipeline,
  Run,
  RunWithPipeline,
  StreamConfig,
} from "@/lib/db";

export type { Connection, Pipeline, Run, RunWithPipeline, StreamConfig };

export interface StreamInfo {
  name: string;
  columns?: string[];
}

export interface HealthResult {
  sling: { path: string; version: string } | null;
  atlas: { path: string; version: string } | null;
}

export interface RunDetail extends Run {
  log?: string;
}

export class ApiError extends Error {
  status: number;
  constructor(message: string, status: number) {
    super(message);
    this.status = status;
  }
}

export async function api<T>(url: string, init?: RequestInit): Promise<T> {
  const res = await fetch(url, { cache: "no-store", ...init });
  const data = (await res.json().catch(() => ({}))) as Record<string, unknown>;
  if (!res.ok) {
    const msg =
      typeof data?.error === "string"
        ? data.error
        : `请求失败（HTTP ${res.status}）`;
    throw new ApiError(msg, res.status);
  }
  return data as T;
}