import type { ActionArgs, ActionFunction, AnyEventObject, Assigner, LowInfer, MachineContext, ParameterizedObject, PropertyAssigner, ProvidedActor, } from "https://deno.land/x/xstate"; import type { ActionWithArgs, AnyActorLogic, AnyStateMachine, CallbackActorLogic, EventObject, InspectionEvent, Observer, Snapshot, } from "https://deno.land/x/xstate"; import { azure } from "https://esm.sh/@ai-sdk/azure"; import { asyncBatchEvents, asyncEventGenerator, fromAIElementStream, fromAIEventStream, fromEventAsyncGenerator, yArrayIterator, } from "https://esm.sh/@cxai/stream@1.0.17?target=esnext&yjs=13.6.20"; import { createActor, fromCallback, initialTransition, transition } from "https://esm.sh/xstate@5.19.2?target=esnext"; import * as Y from "https://esm.sh/yjs@^13.6.20?target=esnext"; export type Actions = { type: "@yjs.array.push"; params: string; } | { type: "@yjs.text.append"; params: string; } | { type: "@yjs.map.set"; params: string | { key: | string | YJSAssigner; value: YJSAssigner | any; map: string | YJSAssigner; }; } | { type: "@yjs.map.delete"; params: { response: string; }; }; export type YJSAssigner = < TContext extends MachineContext, TExpressionEvent extends EventObject, TEvent extends EventObject, >(args: YJSAssignArgs) => T; export interface YJSAssignArgs< TContext extends MachineContext, TExpressionEvent extends EventObject, TEvent extends EventObject, > extends ActionArgs { doc: Y.Doc; } export default function withYjs(machine: AnyStateMachine, doc: Y.Doc) { return machine.provide({ actors: { "@yjs.sink": fromEventAsyncGenerator(async function*({ input }: { input: Y.Array }) { let i = 0; for await (const e of yArrayIterator(input)) { yield { id: i++, timestamp: Date.now(), ...e, }; } }), "@yjs.produce": fromCallback(async function*({ input, recive }) { recive(function(event: EventObject) { input.push([event]); }); }) as CallbackActorLogic>, }, actions: { "@yjs.array.push": ( { event, context }, params: string | { path: string | YJSAssigner; value: YJSAssigner | any }, ) => { const value = typeof params === "string" ? event : params.value instanceof Function ? params.value({ event, context }) : params.value ?? event; const path = typeof params === "string" ? params : typeof params.path === "string" ? params.path : params.path({ event, context }); doc.getArray(path).push([value]); }, "@yjs.text.append": ({ event: { textDelta, data } }, params: string) => { doc.getText(params).insert(doc.getText(params).length, textDelta || data); }, "@yjs.map.set": ( { event, context }: { event: TEvent; context: TContext }, params: { path: string | ((args: { event: TEvent; context: TContext }) => string); key: string | ((args: { event: TEvent; context: TContext }) => string); value: (args: { event: TEvent; context: TContext }) => any | any; }, ) => { const key = typeof params.key === "string" ? params.key : params.key({ event, context }); const value = params.value instanceof Function ? params.value({ event, context }) : event; const path = typeof params.path === "string" ? params.path : params.path({ event, context }); doc.getMap(path).set(key, value); }, "@yjs.map.delete": ({ event }, params: string) => { doc.getMap(params).delete(event.key); }, }, }); }

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