25 lines
779 B
TypeScript
25 lines
779 B
TypeScript
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import { isToolUIPart, type UIMessage } from "ai";
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/**
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* The pending-question gate: an unanswered interaction tool part (quiz/ask)
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* blocks the composer — one question at a time, mirroring the teacher's
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* prompt contract. Derived client state; the server enforces nothing.
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*/
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export interface PendingToolCall {
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toolCallId: string;
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tool: string;
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}
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export function findPendingToolCall(messages: UIMessage[]): PendingToolCall | null {
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for (let m = messages.length - 1; m >= 0; m--) {
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const msg = messages[m]!;
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for (let p = msg.parts.length - 1; p >= 0; p--) {
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const part = msg.parts[p]!;
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if (isToolUIPart(part) && part.state === "input-available") {
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return { toolCallId: part.toolCallId, tool: part.type.slice("tool-".length) };
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}
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}
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}
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return null;
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}
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