import type { UsageAuthorization } from "./consultation-billing";
import type { PromptCacheUsage } from "./agent-generation-settings";

export type ReportBillingUsage = Readonly<{
  actualModelId: string;
  modelConfigVersion?: number;
  inputTokens: number;
  outputTokens: number;
  durationMs: number;
  cache?: PromptCacheUsage | null;
}>;

export type ReportBillingPort = Readonly<{
  reserve(input: Readonly<{
    userId: string;
    requestId: string;
    modelId: string;
  }>): Promise<UsageAuthorization>;
  complete(input: Readonly<{
    userId: string;
    requestId: string;
    usage: ReportBillingUsage;
  }>): Promise<boolean>;
  release(input: Readonly<{
    userId: string;
    requestId: string;
    reason: string;
  }>): Promise<boolean>;
}>;