import type { ModelConfig, ProviderRequestOptions } from "@arnilo/prism";
import { mapCacheRetention, sanitizeCacheKey } from "@arnilo/prism";

/** OpenAI-compatible `prompt_cache_key` accepted length cap. */
export const __PROVIDER_UPPER___PROMPT_CACHE_KEY_MAX_LENGTH = 64;

export function __PROVIDER_ID__PromptCacheKey(options: ProviderRequestOptions | undefined): string | undefined {
  // Sanitize + clamp via the shared core helper so cache keys cannot carry
  // disallowed characters or exceed the provider limit. Cache keys are
  // session/customer identifiers only, never credentials.
  return sanitizeCacheKey(options?.cacheKey ?? options?.sessionId, __PROVIDER_UPPER___PROMPT_CACHE_KEY_MAX_LENGTH);
}

/** Retention mapping via the shared core helper; `"short"`/`"long"` only when the model supports it. */
export function __PROVIDER_ID__PromptCacheRetention(
  retention: ProviderRequestOptions["cacheRetention"] | undefined,
  model: ModelConfig,
): "short" | "long" | undefined {
  return mapCacheRetention(retention, model);
}