import type { SiteHttpContext } from "./http";
import { createSiteRateLimiter, type SiteRateLimiter } from "./rate-limit";
import type { SecretResolver } from "./types";

export interface SiteAdapterDeps {
  secrets: SecretResolver;
  fetch?: typeof globalThis.fetch;
  /** 同站共享的限流器;不传则按站点定义新建(列表/搜索/详情/下载共享) */
  limiter?: SiteRateLimiter;
  now?: () => Date;
  timeoutMs?: number;
  userAgent?: string;
  /** 覆盖站点基址(测试指向 mock) */
  baseUrl?: string;
}

export function buildHttpContext(
  siteId: string,
  deps: SiteAdapterDeps,
  limiterDefaults: { minIntervalMs: number; burst: number },
): SiteHttpContext {
  const ctx: SiteHttpContext = {
    siteId,
    fetch: deps.fetch ?? globalThis.fetch,
    limiter: deps.limiter ?? createSiteRateLimiter(limiterDefaults),
    timeoutMs: deps.timeoutMs ?? 30_000,
    now: deps.now ?? (() => new Date()),
  };
  if (deps.userAgent) ctx.userAgent = deps.userAgent;
  return ctx;
}