Shared Types

export interface VaultState {
  version: number;
  status: VaultStatus;
  rolesMask: Buffer;         // 3 bytes
  currentPeriodId: bigint;
  spentThisPeriod: bigint;   // satoshis
  lastUpdateTimestamp: bigint;
}

export enum VaultStatus {
  ACTIVE = 0,
  PAUSED = 1,
  EMERGENCY_LOCK = 2,
  MIGRATING = 3,
}

export interface ProposalState {
  version: number;
  status: ProposalStatus;
  approvalCount: number;
  requiredApprovals: number;
  votingEndTimestamp: bigint;
  executionTimelock: bigint;
  payoutTotal: bigint;     // satoshis
  payoutHash: Buffer;      // 28 bytes
}

export enum ProposalStatus {
  DRAFT = 0, SUBMITTED = 1, VOTING = 2, APPROVED = 3,
  QUEUED = 4, EXECUTABLE = 5, EXECUTED = 6,
  CANCELLED = 7, EXPIRED = 8,
}

export interface ScheduleState {
  version: number;
  scheduleType: ScheduleType;
  intervalSeconds: bigint;
  nextUnlockTimestamp: bigint;
  amountPerInterval: bigint;
  totalReleased: bigint;
  cliffTimestamp: bigint;    // 0 if no cliff
}

export enum ScheduleType {
  RECURRING = 0,
  LINEAR_VESTING = 1,
  STEP_VESTING = 2,
}

export interface VoteState {
  version: number;
  proposalIdPrefix: Buffer;  // 4 bytes
  voteChoice: VoteChoice;
  lockTimestamp: bigint;
  unlockTimestamp: bigint;
}

export enum VoteChoice {
  AGAINST = 0,
  FOR = 1,
  ABSTAIN = 2,
}

export interface CovenantUTXO<TState = any> {
  utxo: UTXORef;
  address: string;
  satoshis: bigint;
  token?: CashTokenData;
  state: TState;
  height: number;
  timestamp: bigint;
}

export interface UTXORef {
  txid: string;
  vout: number;
}

export interface CashTokenData {
  category: string;
  nft?: {
    capability?: 'none' | 'mutable' | 'minting';
    commitment: Buffer;
  };
  amount?: bigint;
}