63 lines
2.2 KiB
TypeScript
63 lines
2.2 KiB
TypeScript
import { create } from "zustand";
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import type { StreamEvent, WidgetDescriptor } from "../api/types";
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interface Entry {
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role: "assistant";
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text: string;
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}
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interface SessionState {
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pendingWidget: WidgetDescriptor | null;
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transcript: Entry[];
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toasts: { level: string; text: string }[];
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stepMessages: { level: string; text: string }[];
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lastUserEntry: { kind: "input" | "choice"; text: string } | null;
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lastSystemEvent: StreamEvent | null;
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currentPhase: string | null;
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applyEvent: (e: StreamEvent) => void;
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clearPending: () => void;
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resetSession: () => void;
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setPhase: (phase: string | null) => void;
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pushToast: (toast: { level: string; text: string }) => void;
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setLastUserEntry: (e: { kind: "input" | "choice"; text: string }) => void;
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}
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const empty = {
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pendingWidget: null,
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transcript: [] as Entry[],
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toasts: [] as { level: string; text: string }[],
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stepMessages: [] as { level: string; text: string }[],
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lastUserEntry: null as { kind: "input" | "choice"; text: string } | null,
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lastSystemEvent: null,
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currentPhase: null as string | null,
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};
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export const useSessionStore = create<SessionState>((set) => ({
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...empty,
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applyEvent: (e) =>
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set((st) => {
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if (e.type === "ui_request")
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return {
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pendingWidget: e.ui_request,
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currentPhase: e.ui_request.phase
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? e.ui_request.phase.split("_")[0]
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: st.currentPhase,
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};
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if (e.type === "text_delta") {
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const t = [...st.transcript];
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const last = t.at(-1);
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if (last && !st.pendingWidget) t[t.length - 1] = { role: "assistant", text: last.text + e.text };
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else t.push({ role: "assistant", text: e.text });
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return { transcript: t };
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}
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if (e.type === "info") return { stepMessages: [...st.stepMessages, { level: e.level ?? "info", text: e.text }] };
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if (e.type === "system_event") return { lastSystemEvent: e };
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return {};
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}),
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clearPending: () => set({ pendingWidget: null }),
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resetSession: () => set({ ...empty }),
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setPhase: (phase) => set({ currentPhase: phase }),
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pushToast: (toast) => set((st) => ({ toasts: [...st.toasts, toast] })),
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setLastUserEntry: (e) => set({ lastUserEntry: e, stepMessages: [] }),
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}));
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