/**
 * Types for Peach Sync - encrypted cross-device credential synchronization
 */

export interface TrustedNetwork {
  ssid?: string;
  bssid?: string;
  isTailscale: boolean;
  addedAt: number;
}

export interface PairedDevice {
  deviceId: string;
  displayName: string;
  x25519PublicKey: string;
  pairedAt: number;
  lastSeenAt?: number;
  lastSyncAt?: number;
}

export type SyncMessage =
  | { type: "SYNC_HELLO"; deviceId: string; clockMs: number; vaultVersion: number }
  | { type: "SYNC_MANIFEST"; entries: Array<{ id: string; modifiedAt: number; deletedAt?: number; hash: string }> }
  | { type: "SYNC_REQUEST"; ids: string[] }
  | { type: "SYNC_ENTRIES"; entries: EncryptedSyncEntry[] }
  | { type: "SYNC_DONE" }
  | { type: "SYNC_ERROR"; code: string; message: string }
  | { type: "PAIR_REQUEST"; edPublicKey: string; name: string; code: string }
  | { type: "PAIR_ACCEPT"; edPublicKey: string; name: string }
  | { type: "PAIR_REJECT"; reason: string };

export interface EncryptedSyncEntry {
  id: string;
  modifiedAt: number;
  deletedAt?: number;
  ciphertext: string;
  nonce: string;
  tag: string;
}

export type SyncStatus = "synced" | "syncing" | "no_peers" | "not_trusted" | "offline";

export interface SyncState {
  status: SyncStatus;
  lastSyncAt?: number;
  pairedDevices: PairedDevice[];
  trustedNetworks: TrustedNetwork[];
  isPro: boolean;
}

export type PairingStep =
  | { stage: "idle" }
  | { stage: "generating_code"; code: string; expiresAt: number }
  | { stage: "waiting_for_peer" }
  | { stage: "entering_code" }
  | { stage: "connecting"; peerName: string }
  | { stage: "verifying" }
  | { stage: "done"; device: PairedDevice }
  | { stage: "error"; message: string };

export interface NoiseHandshakeResult {
  sessionKey: Uint8Array;
  sendNonce: number;
  receiveNonce: number;
  isInitiator: boolean;
}