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watches turns and automatically creates and resolves tasks that get pinned into main agent context
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5.7 kB · 161 lines
TypeScript
at main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162import { OBSERVER_STATUSES, type CommitmentEvent, type ObservedThread, type ObserverOutput, type Registry, type Thread, type ThreadStatus } from "./types.ts";
export const emptyRegistry = (): Registry => ({ threads: [], unreconciled: [], created: 0 });
export const isFinal = (thread: Pick<Thread, "status">): boolean => thread.status === "done" || thread.status === "cancelled" || thread.status === "superseded" || thread.status === "dismissed";
type LiveThread = Thread & { status: Exclude<ThreadStatus, "done" | "cancelled" | "superseded" | "dismissed"> };
export const liveThreads = (registry: Registry): LiveThread[] => registry.threads.filter((thread): thread is LiveThread => !isFinal(thread));
export function observationChangesState(registry: Registry, output: ObserverOutput): boolean { if (output.additions.length > 0) return true; const existing = new Map(output.existing.map((thread) => [thread.id, thread])); const live = liveThreads(registry); return ( existing.size !== live.length || live.some((thread) => { const observed = existing.get(thread.id); return ( observed === undefined || observed.canonicalRequest !== thread.canonicalRequest || observed.status !== thread.status ); }) );}
const patchThread = (thread: Thread, observed: ObservedThread, at: number): Thread => ({ ...thread, canonicalRequest: observed.canonicalRequest, status: observed.status, updatedAt: at,});
const applyObservation = ( registry: Registry, event: Extract<CommitmentEvent, { kind: "observation" }>,): Registry => { const byId = new Map(event.output.existing.map((thread) => [thread.id, thread])); const threads = registry.threads.map((thread) => { const observed = byId.get(thread.id); return observed && !isFinal(thread) ? patchThread(thread, observed, event.at) : thread; }); const additions = event.output.additions.map((observed, index): Thread => ({ id: `t${registry.created + index + 1}`, canonicalRequest: observed.canonicalRequest, status: observed.status, createdAt: event.at, updatedAt: event.at, })); const reconciled = new Set(event.reconciled); return { threads: [...threads, ...additions], unreconciled: registry.unreconciled.filter((message) => !reconciled.has(message.messageId)), created: registry.created + additions.length, };};
const applyUserAction = ( registry: Registry, event: Extract<CommitmentEvent, { kind: "user_action" }>,): Registry => { if (event.action === "drop") { return { ...registry, threads: registry.threads.filter((thread) => thread.id !== event.threadId) }; } const status: ThreadStatus = event.action === "accept" ? "done" : event.action === "dismiss" ? "dismissed" : "open"; return { ...registry, threads: registry.threads.map((thread) => thread.id === event.threadId ? { ...thread, status, updatedAt: event.at } : thread, ), };};
export function replay(events: CommitmentEvent[]): Registry { return events.reduce<Registry>((registry, event) => { switch (event.kind) { case "user_message": return { ...registry, unreconciled: [...registry.unreconciled, event], }; case "observation": return applyObservation(registry, event); case "user_action": return applyUserAction(registry, event); case "correction": return { ...registry, threads: registry.threads.map((thread) => thread.id === event.threadId ? { ...thread, ...(event.canonicalRequest === undefined ? {} : { canonicalRequest: event.canonicalRequest }), ...(event.status === undefined ? {} : { status: event.status }), updatedAt: event.at, } : thread, ), }; case "observer_failure": return registry; } }, emptyRegistry());}
const isRecord = (value: unknown): value is Record<string, unknown> => typeof value === "object" && value !== null && !Array.isArray(value);
const statuses = new Set<string>([...OBSERVER_STATUSES, "dismissed"]);const observerStatuses = new Set<string>(OBSERVER_STATUSES);const userActions = new Set(["accept", "dismiss", "reopen", "drop"]);const strings = (value: unknown): value is string[] => Array.isArray(value) && value.every((item) => typeof item === "string");const observed = (value: unknown, requireId: boolean): boolean => isRecord(value) && typeof value.canonicalRequest === "string" && typeof value.status === "string" && observerStatuses.has(value.status) && (requireId ? typeof value.id === "string" : value.id === undefined);
export function isCommitmentEvent(value: unknown): value is CommitmentEvent { if (!isRecord(value) || typeof value.kind !== "string" || typeof value.at !== "number") return false; switch (value.kind) { case "user_message": return typeof value.messageId === "string" && typeof value.text === "string"; case "observation": return ( strings(value.reconciled) && isRecord(value.output) && Array.isArray(value.output.existing) && value.output.existing.every((thread) => observed(thread, true)) && Array.isArray(value.output.additions) && value.output.additions.every((thread) => observed(thread, false)) ); case "user_action": return ( typeof value.threadId === "string" && typeof value.action === "string" && userActions.has(value.action) ); case "correction": return ( typeof value.threadId === "string" && (value.canonicalRequest === undefined || typeof value.canonicalRequest === "string") && (value.status === undefined || (typeof value.status === "string" && statuses.has(value.status))) ); case "observer_failure": return strings(value.messageIds) && typeof value.error === "string"; default: return false; }}