Method handleCalc

calc/calc.ts:207–264

(msg: Api.Message)

  cmdHandlers: Record<string, (msg: Api.Message) => Promise<void>> = {
    calc: async (msg: Api.Message) => await this.handleCalc(msg),
  };

  private async handleCalc(msg: Api.Message): Promise<void> {
    try {
      const rawText = (msg.message ?? msg.text ?? "").trim();
      const parts = rawText.split(/\s+/);
      const [, ...args] = parts;

      if (!args.length) {
        await msg.edit({
          text: help_text,
          parseMode: "html",
          linkPreview: false,
        });
        return;
      }

      const expression = args.join(" ");

      if (expression.length > MAX_EXPR_LENGTH) {
        await msg.edit({
          text: `❌ <b>表达式过长</b><br/><br/>最大长度: ${MAX_EXPR_LENGTH} 字符<br/>当前长度: ${expression.length}`,
          parseMode: "html",
        });
        return;
      }

      let result: number;
      try {
        result = SafeMathParser.calculate(expression);
      } catch (error: any) {
        await msg.edit({
          text: `🚫 <b>计算失败</b><br/><br/>表达式: <code>${htmlEscape(expression)}</code><br/>错误: ${htmlEscape(error?.message ?? "未知错误")}`,
          parseMode: "html",
        });
        return;
      }

      if (!Number.isFinite(result)) {
        await msg.edit({
          text: `🚫 <b>计算结果无效</b><br/><br/>表达式: <code>${htmlEscape(expression)}</code>`,
          parseMode: "html",
        });
        return;
      }

      const formatted = this.formatResult(result);

      await msg.edit({
        text: `🧮 <b>计算结果</b><br/><br/><code>${htmlEscape(expression)}</code><br/>= <b>${formatted}</b>`,
        parseMode: "html",
        linkPreview: false,
      });
    } catch (error: any) {
      await msg.edit({
        text: `❌ <b>插件错误</b><br/><br/>${htmlEscape(error?.message ?? "未知错误")}`,
        parseMode: "html",
      });