// Client registry — maps API keys to their rate-limit quota and subscription tier.

import type { ClientConfig } from "../middleware/rateLimiter";

// Parameters: none — reads CLIENT_CONFIG_JSON env var or falls back to defaults.

// Returns: Map from API key string to ClientConfig with quota, plan, and tier.

export function buildClientRegistry(): Map<string, ClientConfig> {

  const raw = process.env.CLIENT_CONFIG_JSON;

  if (!raw) {

    return new Map([

      ["key-dev", { quota: 10, plan: "developer", tier: 0 }],

    ]);

  }

  const entries = JSON.parse(raw) as Array<{ key: string } & ClientConfig>;

  return new Map(entries.map(({ key, ...cfg }) => [key, cfg]));

}