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TypeScript
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600import type { CreateTaskInput, TaskInput, TaskRun, TaskRunPage, TaskSummary,} from "../../shared/tasks";import { createOwnerClient, OwnerSessionError } from "./owner-client";
type Connection = ReturnType<typeof createOwnerClient>;export type TaskDraft = { name: string; instructions: string; conversationId: string; kind: "once" | "cron"; at: string; expression: string; enabled: boolean;};type Editor = { id: string; base: TaskSummary | null; draft: TaskDraft; pending: CreateTaskInput | null; error: string; conflict: boolean;};type View = { tasks: TaskSummary[]; selected: string | null; history: TaskRunPage; connected: boolean; loading: boolean; reading: boolean; busy: boolean; error: string; notice: string; editor: Editor | null; editorOpen: boolean; deleting: TaskSummary | null; manualPending: Record<string, string>;};const initial: View = { tasks: [], selected: null, history: { runs: [], nextCursor: null }, connected: false, loading: true, reading: false, busy: false, error: "", notice: "", editor: null, editorOpen: false, deleting: null, manualPending: {},};export const editableTask = ({ name, instructions, enabled, schedule,}: TaskInput): TaskInput => ({ name, instructions, enabled, schedule });export const activeRun = (run: TaskRun) => ["dispatching", "pending", "running"].includes(run.status);function draftFor(task?: TaskSummary, conversationId = ""): TaskDraft { return { name: task?.name ?? "", instructions: task?.instructions ?? "", conversationId: task?.conversationId ?? conversationId, enabled: task?.enabled ?? true, kind: task?.schedule.kind ?? "cron", at: task?.schedule.kind === "once" ? task.schedule.at.slice(0, 19) : "", expression: task?.schedule.kind === "cron" ? task.schedule.expression : "0 9 * * *", };}function inputFor(draft: TaskDraft): TaskInput { return { name: draft.name, instructions: draft.instructions, enabled: draft.enabled, schedule: draft.kind === "cron" ? { kind: "cron", expression: draft.expression, timezone: "UTC" } : { kind: "once", at: `${draft.at.length === 16 ? `${draft.at}:00` : draft.at}Z`, }, };}// Only known public validation messages may reach the page; never render raw RPC errors.function validationMessage(error: unknown): string | null { const message = error instanceof Error ? error.message : ""; if (/Task changed\./.test(message)) return "This task changed elsewhere. Load its latest version before saving your edits."; if (/Task not found|Task was deleted|Conversation not found/.test(message)) return "This task or its conversation was deleted. Refresh tasks to check what is available."; if (/future instant/.test(message)) return "Choose a future date and time in UTC for this one-off schedule."; if (/Task cron|task cron|five-field UTC cron/.test(message)) return "Enter a valid five-field numeric cron expression (minute, hour, day, month, weekday), in UTC."; if (/task instant|Task instant/.test(message)) return "Enter a valid date and time in UTC, including whole seconds."; if (/Task text/.test(message)) return "Enter a name and instructions within the displayed limits, without control characters."; if (/Task limit reached/.test(message)) return "You have reached the limit of 100 tasks. Delete a task before adding another."; return null;}
/** Mounted task metadata and drafts only. The native owner APIs own schedules and execution. */export class TaskSession { private view = initial; private listeners = new Set<() => void>(); private connection: Connection | null = null; private active = false; private revision = 0; private timer: ReturnType<typeof setTimeout> | undefined; private retry: ReturnType<typeof setTimeout> | undefined; getSnapshot = () => this.view; getServerSnapshot = () => initial; subscribe = (listener: () => void) => { this.listeners.add(listener); return () => { this.listeners.delete(listener); }; }; private publish(patch: Partial<View>) { this.view = { ...this.view, ...patch }; this.listeners.forEach((listener) => listener()); } start = () => { this.active = true; this.connect(); window.addEventListener("online", this.connect); window.addEventListener("offline", this.offline); window.addEventListener("focus", this.refresh); document.addEventListener("visibilitychange", this.visible); return () => { this.active = false; this.revision++; this.connection?.close(); this.connection = null; clearTimeout(this.timer); clearTimeout(this.retry); window.removeEventListener("online", this.connect); window.removeEventListener("offline", this.offline); window.removeEventListener("focus", this.refresh); document.removeEventListener("visibilitychange", this.visible); }; }; private visible = () => { if (!document.hidden) void this.refresh(); else clearTimeout(this.timer); }; private offline = () => { this.revision++; this.connection?.close(); this.connection = null; clearTimeout(this.timer); clearTimeout(this.retry); this.publish({ connected: false, loading: false, reading: false, busy: false, error: "You’re offline. Reconnect to refresh tasks or retry your changes.", }); }; connect = () => { if (!this.active) return; if (!navigator.onLine) return this.offline(); clearTimeout(this.retry); this.connection?.close(); this.revision++; const connection = createOwnerClient(() => { if (this.connection !== connection || !this.active) return; this.offline(); this.publish({ error: "Connection interrupted. Your edits are still here. Reconnecting…", }); this.retry = setTimeout(this.connect, 3000); }); this.connection = connection; void connection.ready .then(() => { if (!this.active || this.connection !== connection) return; this.publish({ connected: true, error: "" }); void this.refresh(); }) .catch((error: unknown) => { if (!this.active || this.connection !== connection) return; this.connection = null; const unauthorized = error instanceof OwnerSessionError; this.publish({ connected: false, loading: false, reading: false, busy: false, ...(unauthorized ? { tasks: [], history: initial.history, deleting: null, editor: null, editorOpen: false, manualPending: {}, } : {}), error: unauthorized ? error.message : "Could not connect to scheduled tasks. Retrying…", }); if (!unauthorized) this.retry = setTimeout(this.connect, 3000); }); }; select = (id: string | null) => { if (id === this.view.selected) return; this.revision++; this.publish({ selected: id, history: initial.history, reading: false, error: "", notice: "", }); void this.refresh(); }; private scheduleRefresh() { clearTimeout(this.timer); if (!this.active || document.hidden || !this.view.connected) return; this.timer = setTimeout( this.refresh, this.view.history.runs.some(activeRun) ? 3000 : 30_000, ); } refresh = async () => { const connection = this.connection; if ( !connection || !this.view.connected || this.view.reading || this.view.busy || document.hidden ) return; const revision = this.revision, selected = this.view.selected; this.publish({ reading: true }); try { const client = await connection.ready; const tasks = await client.call<TaskSummary[]>("listTasks"); const history = selected && tasks.some((task) => task.id === selected) ? await client.call<TaskRunPage>("listTaskRuns", [selected]) : initial.history; if ( !this.active || this.revision !== revision || this.connection !== connection ) return; // Preserve the immutable cursor and older loaded pages while refreshing recent status. const previous = this.view.history; const overlap = history.runs.some((run) => previous.runs.some((item) => item.id === run.id), ); const retained = (overlap ? previous.runs : []).filter( (run) => !history.runs.some((item) => item.id === run.id), ); // Refresh at most one older page with unfinished work per cycle. Terminal // pages are immutable; active entries outside the latest page still settle. const unfinished = retained.find(activeRun) ?? retained.find((run) => run.status === "dispatch_error"); if (selected && unfinished) { const index = previous.runs.findIndex( (run) => run.id === unfinished.id, ); const before = previous.runs[index - 1]; if (before) { const page = await client.call<TaskRunPage>("listTaskRuns", [ selected, { before: { id: before.id, createdAt: before.createdAt }, }, ]); if ( !this.active || this.revision !== revision || this.connection !== connection ) return; for (let i = 0; i < retained.length; i++) { retained[i] = page.runs.find((run) => run.id === retained[i].id) ?? retained[i]; } } } this.publish({ tasks, history: { runs: [...history.runs, ...retained], nextCursor: overlap ? previous.nextCursor : history.nextCursor, }, }); } catch { if ( this.active && this.revision === revision && this.connection === connection ) this.publish({ error: "Could not refresh tasks. Saved details may be out of date. Your edits are still here.", }); } finally { if ( this.active && this.revision === revision && this.connection === connection ) { this.publish({ reading: false, loading: false }); this.scheduleRefresh(); } } }; reload = () => { this.publish({ error: "" }); void this.refresh(); }; more = async () => { const { selected, history } = this.view, connection = this.connection; if ( !selected || !history.nextCursor || !connection || this.view.reading || this.view.busy ) return; const revision = this.revision; this.publish({ reading: true }); try { const client = await connection.ready; const page = await client.call<TaskRunPage>("listTaskRuns", [ selected, { before: history.nextCursor }, ]); if ( !this.active || this.revision !== revision || this.connection !== connection ) return; this.publish({ history: { runs: [ ...history.runs, ...page.runs.filter( (run) => !history.runs.some((item) => item.id === run.id), ), ], nextCursor: page.nextCursor, }, error: "", }); } catch { if (this.active && this.revision === revision) this.publish({ error: "Could not load older runs. Try again." }); } finally { if (this.active && this.revision === revision) { this.publish({ reading: false }); this.scheduleRefresh(); } } }; openEditor = (task?: TaskSummary, conversationId?: string) => { if (this.view.busy) return; if (this.view.editor) { this.publish({ editorOpen: true }); return; } this.publish({ editorOpen: true, editor: { id: task?.id ?? crypto.randomUUID(), base: task ?? null, draft: draftFor(task, conversationId), pending: null, error: "", conflict: false, }, notice: "", }); }; closeEditor = () => { if (!this.view.busy) this.publish({ editorOpen: false, ...(this.view.editor?.pending ? {} : { editor: null }), }); }; setConversation = (editorId: string, conversationId: string) => { if (this.view.editor?.id === editorId && this.view.editorOpen) this.draft({ conversationId }); }; draft = (patch: Partial<TaskDraft>) => { const editor = this.view.editor; if (editor && !editor.pending && !this.view.busy) this.publish({ editor: { ...editor, draft: { ...editor.draft, ...patch } }, }); }; private async mutate(action: (connection: Connection) => Promise<void>) { const connection = this.connection; if (!connection || !this.view.connected || this.view.busy) return; this.revision++; this.publish({ busy: true, reading: false, error: "", notice: "" }); try { await action(connection); } finally { if (this.active && this.connection === connection) { this.revision++; this.publish({ busy: false }); void this.refresh(); } } } private current(connection: Connection) { return this.active && this.connection === connection; } save = () => this.mutate(async (connection) => { const editor = this.view.editor; if (!editor) return; const input = inputFor(editor.draft); const pending = editor.pending ?? { ...input, id: editor.id, conversationId: editor.draft.conversationId, }; if (!editor.base) this.publish({ editor: { ...editor, pending, error: "" } }); try { const client = await connection.ready; const task = await client.call<TaskSummary>( editor.base ? "updateTask" : "createTask", editor.base ? [editor.id, editor.base.version, input] : [pending], ); if (!this.current(connection)) return; this.publish({ tasks: [ task, ...this.view.tasks.filter((item) => item.id !== task.id), ], editor: null, editorOpen: false, notice: "Task saved.", }); } catch (error) { if (!this.current(connection)) return; const known = validationMessage(error); this.publish({ editor: { ...editor, pending: editor.base || known ? null : pending, conflict: /Task changed\./.test( error instanceof Error ? error.message : "", ), error: known ?? (editor.base ? "Could not confirm your changes. Your edits are still here. Retry saving; if the version changed, load the latest version first." : "Could not confirm creation. Retry the same request to safely check whether this task was saved."), }, }); } }); rebase = () => this.mutate(async (connection) => { const editor = this.view.editor; if (!editor?.base) return; try { const task = await ( await connection.ready ).call<TaskSummary>("getTask", [editor.id]); if (this.current(connection)) this.publish({ editor: { ...editor, base: task, conflict: false, error: "Latest version loaded. Your edits are preserved. Review them, then save to replace the current task settings.", }, }); } catch { if (this.current(connection)) this.publish({ editor: { ...editor, error: "Could not load the latest version. It may have been deleted. Your edits are still here.", }, }); } }); toggle = (task: TaskSummary) => this.mutate(async (connection) => { try { const updated = await ( await connection.ready ).call<TaskSummary>("updateTask", [ task.id, task.version, { ...editableTask(task), enabled: !task.enabled }, ]); if (this.current(connection)) this.publish({ tasks: this.view.tasks.map((item) => item.id === task.id ? updated : item, ), notice: updated.enabled ? "Task enabled." : "Task paused. Future runs are stopped and active task work is being cancelled.", }); } catch (error) { if (this.current(connection)) this.publish({ error: validationMessage(error) ?? "Could not confirm this change. Refresh tasks before trying again.", }); } }); run = (task: TaskSummary) => this.mutate(async (connection) => { const requestId = this.view.manualPending[task.id] ?? crypto.randomUUID(); this.publish({ manualPending: { ...this.view.manualPending, [task.id]: requestId }, }); try { const run = await ( await connection.ready ).call<TaskRun>("runTaskNow", [task.id, requestId]); if (!this.current(connection)) return; const pending = { ...this.view.manualPending }; delete pending[task.id]; this.publish({ tasks: this.view.tasks.map((item) => item.id === task.id ? { ...item, previousRun: run } : item, ), manualPending: pending, notice: "Run requested. Check run history for progress and the conversation for results.", }); } catch (error) { if (this.current(connection)) this.publish({ error: validationMessage(error) ?? "Could not confirm the run request. Retry this request to check its status without starting a duplicate run.", }); } }); confirmDelete = (task: TaskSummary | null) => { if (!this.view.busy) this.publish({ deleting: task, error: "" }); }; remove = () => this.mutate(async (connection) => { const task = this.view.deleting; if (!task) return; try { await ( await connection.ready ).call("deleteTask", [task.id, task.version]); if (this.current(connection)) this.publish({ deleting: null, tasks: this.view.tasks.filter((item) => item.id !== task.id), history: initial.history, notice: "Task and run history deleted. Conversation messages are kept.", }); } catch (error) { if (this.current(connection)) this.publish({ error: validationMessage(error) ?? "Could not confirm deletion. Refresh tasks and try again.", }); } });}