export const PROTOCOL_VERSION = 2 as const;
export const CHUNK_SIZE = 8 * 1024 * 1024;
export const GCM_TAG_BYTES = 16;
export const MAX_CHUNK_BODY = CHUNK_SIZE + GCM_TAG_BYTES;
export const MAX_MANIFEST_PLAINTEXT = 64 * 1024;
export const MAX_MANIFEST_BODY = MAX_MANIFEST_PLAINTEXT + GCM_TAG_BYTES;
export const UPLOAD_RESERVATION_MS = 24 * 60 * 60 * 1000;
export const LEASE_IDLE_MS = 15 * 60 * 1000;
export const BLOB_WARNING_BYTES = 100 * 1024 * 1024;
export const BLOB_FALLBACK_MAX_BYTES = 256 * 1024 * 1024;
export const PREVIEW_MAX_BYTES = 25 * 1024 * 1024;
export const EXPIRY_VALUES = ["1h", "2h", "6h", "12h", "24h", "7d"] as const;
export type ExpiryChoice = (typeof EXPIRY_VALUES)[number];
export const READ_VALUES = [1, 5, 10, 20, 50, 100] as const;
export type ReadChoice = (typeof READ_VALUES)[number] | null;
export const DEFAULT_EXPIRY: ExpiryChoice = "24h";
export const DEFAULT_READS: ReadChoice = 1;
export type DropState = "uploading" | "ready";
export interface ReserveRequest {
  version: 2;
  chunkSize: number;
  chunkCount: number;
  noncePrefix: string;
  expiresIn: ExpiryChoice;
  maxReads: ReadChoice;
}
export interface ReserveResponse {
  id: string;
  uploadExpiresAt: string;
}
export interface PublicDescriptor {
  version: 2;
  id: string;
  chunkSize: number;
  chunkCount: number;
  noncePrefix: string;
  chunkCipherBytes: number[];
  manifest: string;
  expiresAt: string;
  canClaim: boolean;
  maxReads: ReadChoice;
}
export interface EncryptedManifest {
  version: 2;
  name: string;
  type: string;
  size: number;
  lastModified: number;
  chunkSize: number;
  chunkCount: number;
}
export interface LeaseResponse {
  token: string;
  leaseExpiresAt: string;
  expiresAt: string;
}
export interface StoredLease {
  createdAt: number;
  lastSeenAt: number;
  expiresAt: number;
}
export interface StoredDrop {
  version: 2;
  id: string;
  state: DropState;
  createdAt: number;
  uploadExpiresAt: number;
  expiresInMs: number;
  expiresAt: number | null;
  maxReads: ReadChoice;
  readsClaimed: number;
  chunkSize: number;
  chunkCount: number;
  noncePrefix: string;
  manifestBytes?: number;
  chunkCipherBytes?: number[];
  leases: Record<string, StoredLease>;
  accessHash: string;
}