import { Handle, Ref } from 'actor';
import { Record, Value } from 'preserves';

export const _Assert = Symbol.for('assert');
export const Assert = Record.makeConstructor<{assertion: Value<WireRef>, handle: Handle}, WireRef>()(
    _Assert, ['assertion', 'handle']);

export const _Retract = Symbol.for('retract');
export const Retract = Record.makeConstructor<{handle: Handle}, WireRef>()(
    _Retract, ['handle']);

export const _Message = Symbol.for('message');
export const Message = Record.makeConstructor<{body: Value<WireRef>}, WireRef>()(
    _Message, ['body']);

export const _Sync = Symbol.for('sync');
export const Sync = Record.makeConstructor<{peer: WireRef}, WireRef>()(
    _Sync, ['peer']);

export type EntityMessage =
    | Record<typeof _Assert, [Value<WireRef>, Handle], WireRef>
    | Record<typeof _Retract, [Handle], WireRef>
    | Record<typeof _Message, [Value<WireRef>], WireRef>
    | Record<typeof _Sync, [WireRef], WireRef>;

export type TurnMessage = Array<[Oid, EntityMessage]>;

export type Oid = number;
export type RefLocation = "mine" | "your";
export type WireRef = { loc: RefLocation, oid: Oid };
export type WireSymbol = { name: WireRef, ref: Ref, count: number };