59 lines
1.6 KiB
TypeScript
59 lines
1.6 KiB
TypeScript
import {Message} from "typescript-telegram-bot-api";
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import {Requirements} from "./requirements";
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export type ArgsMode = "none" | "optional" | "required";
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export abstract class ChatCommand {
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regexp?: RegExp | null;
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command?: string | string[];
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argsMode: ArgsMode = "none";
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requirements?: Requirements = null;
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title?: string;
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description?: string;
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get finalRegexp(): RegExp {
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if (!this.regexp) {
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const inferred = name(this.constructor.name);
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const names = this.command ?? inferred;
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this.regexp = createCommandRegExp(names, this.argsMode);
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}
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return this.regexp;
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}
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abstract execute(
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msg: Message,
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match?: RegExpExecArray
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): Promise<void>;
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}
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export function name(s: string) {
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return s
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.replace(/Command$/, "")
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.replace(/([a-z0-9])([A-Z])/g, "$1$2")
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.toLowerCase();
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}
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function escapeRe(s: string) {
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return s.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
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}
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export function createCommandRegExp(
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names: string | string[],
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argsMode: ArgsMode = "optional",
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) {
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const list = Array.isArray(names) ? names : [names];
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const group = list.map(escapeRe).join("|");
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const base = `^\\/(${group})(?:@([\\w_]+))?`; // (1)=cmd, (2)=bot
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const tail =
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argsMode === "none"
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? "\\s*$"
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: argsMode === "required"
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? "\\s+([\\s\\S]+)\\s*$" // (3)=args обязателен
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: "(?:\\s+([\\s\\S]+))?\\s*$"; // (3)=args опционален
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return new RegExp(base + tail, "i");
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}
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