103 lines
2.6 KiB
TypeScript
103 lines
2.6 KiB
TypeScript
import type { IGameContext, PromptEvent } from 'boardgame-core';
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export interface PromptHandlerOptions {
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commands: IGameContext<any>['commands'];
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onPrompt: (prompt: PromptEvent) => void;
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onCancel: (reason?: string) => void;
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}
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export class PromptHandler {
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private commands: IGameContext<any>['commands'];
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private onPrompt: (prompt: PromptEvent) => void;
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private onCancel: (reason?: string) => void;
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private activePrompt: PromptEvent | null = null;
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private isListening = false;
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private pendingInput: string | null = null;
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constructor(options: PromptHandlerOptions) {
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this.commands = options.commands;
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this.onPrompt = options.onPrompt;
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this.onCancel = options.onCancel;
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}
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start(): void {
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this.isListening = true;
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this.listenForPrompt();
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}
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private listenForPrompt(): void {
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if (!this.isListening) return;
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this.commands.promptQueue.pop()
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.then((promptEvent) => {
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this.activePrompt = promptEvent;
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// 如果有等待的输入，自动提交
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if (this.pendingInput) {
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const input = this.pendingInput;
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this.pendingInput = null;
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const error = this.activePrompt.tryCommit(input);
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if (error === null) {
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this.activePrompt = null;
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this.listenForPrompt();
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} else {
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// 提交失败，把 prompt 交给 UI 显示错误
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this.onPrompt(promptEvent);
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}
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return;
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}
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this.onPrompt(promptEvent);
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})
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.catch((reason) => {
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this.activePrompt = null;
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this.onCancel(reason?.message || 'Cancelled');
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});
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}
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/**
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* Submit an input string to the current prompt.
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* @returns null on success (input accepted), error string on validation failure
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*/
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submit(input: string): string | null {
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if (!this.activePrompt) {
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// 没有活跃 prompt，保存为待处理输入
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this.pendingInput = input;
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return null;
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}
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const error = this.activePrompt.tryCommit(input);
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if (error === null) {
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this.activePrompt = null;
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this.listenForPrompt();
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}
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return error;
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}
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cancel(reason?: string): void {
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if (this.activePrompt) {
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this.activePrompt.cancel(reason);
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this.activePrompt = null;
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}
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this.onCancel(reason);
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}
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stop(): void {
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this.isListening = false;
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if (this.activePrompt) {
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this.activePrompt.cancel('Handler stopped');
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this.activePrompt = null;
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}
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}
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destroy(): void {
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this.stop();
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}
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}
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export function createPromptHandler(
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options: PromptHandlerOptions,
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): PromptHandler {
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return new PromptHandler(options);
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}
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