Moe Dice's command runner. Known issue:If I send too many segments to Google,the API will return 500.

Moe Dice(Node ver.) Command Parser&Runner.js

var Segment=require('./classes/segment');
function buildContent(content,bot_id,user_id,user_name){
	var ret=new Segment();
	ret.addMention(user_name,user_id);
	for(var i in content){
		if(content[i].type=='USER_MENTION'&&content[i].user.userId==bot_id){
			console.log('Command detected.');
			var command=content[parseInt(i)+1].text.trim();
			var rest=content;
			rest.splice(0,parseInt(i)+2);
			matchAndExec(command,rest,ret);
		}
	}
}




function matchAndExec(command,rest,seg){
	var commands=[
	{
		reg:/^(\d+)\s*[dDx×\*]\s*(\d+)/,
		callback:function(m){
			var count=m[0],
			min=1,
			max=m[1];
			if(max>256)max=256;
			if(max<1)max=1;
			if(count>64)count=64;
			if(count<1)count=1;
			var dice_result=roll(max,min,count);
			if(roll(300,1,1)[0]==233){
				seg.addText(' 骰子投出了 *0* 点！和喇叭酱的节操一样多！');
				return;
			}
			if(count==1){
				seg.addText(' 骰子骨碌骨碌转！投出了 *'+dice_result[0]+'* 点！诶嘿~(ゝω・)☆');
				return;
			}else{
				seg.addText(' '+count+'只骰子骨碌骨碌转！分别投出了 *'+dice_result.join('、')+'* 点！诶嘿~(ゝω・)☆');
				return;
			}
		}
	},
	{
		reg:/^roll\s*(\d+)?\s*(\d+)?/i,
		callback:function(m){
			console.log(m);
			if(typeof m[0]=='undefined'&&typeof m[1]=='undefined'){
				var dice_result=roll(100,1,1);
			}else if(typeof m[0]!='undefined'&&typeof m[1]=='undefined'){
				var max=parseInt(m[0]);
				if(max>256)max=256;
				if(max<1)max=1;
				var dice_result=roll(max,1,1);
			}else{
				var min=parseInt(m[0]);
				if(min>256)min=256;
				if(min<1)min=1;
				var max=parseInt(m[1]);
				if(min>256)min=256;
				if(min<1)min=1;
				if(min>max){
					var tem=max;
					max=min;
					min=tem;
				}
				if(min==max)min=max-2;
				var dice_result=roll(max,min,1);
			}
			seg.addText(' 骰子骨碌骨碌转！投出了 *'+dice_result[0]+'* 点！诶嘿~(ゝω・)☆');
			return;
		}
	},
	{
		reg:/^list\s*(\d+)?/i,
		callback:function(m){
			console.log(rest);
			for(var i in rest){
				if(rest[i].type=='LINE_BREAK'){
					console.log(i);
					rest.splice(0,parseInt(i)+1);
					break;
				}
			}
			var options=[];
			var temp_option=[];
			for(var i in rest){
				if(rest[i].type=='LINE_BREAK'){
					options.push(temp_option);
					temp_option=[];
					continue;
				}
				if(rest[i].text.toLowerCase()=='endlist'&&temp_option.length==0){
					break;
				}
				temp_option.push(rest[i]);
			}
			if(options.length==0){
				seg.addText(' 没有选项让老娘选什么！');
				return;
			}
			if(options.length==1){
				seg.addText('只有一个选项让老娘选什么！');
				return;
			}
			if(typeof m !='undefined'){
				var count=parseInt(m);
			}else{var count=1;}
			if(options.length<count){
				seg.addText(' 全选上不就行了么，还用老娘出马？');
				return;
			}
			var dice_result=roll(options.length-1,0,count);
			if(count==1){
				seg.addText(' 骰子骨碌骨碌转！选中了 *');
				for(var i in options[dice_result[0]]){
					seg.segments.push(options[dice_result[0]][i]);
				}
				seg.addText('* ！诶嘿~(ゝω・)☆');
				return;
			}else{
				seg.addText(' '+count+'只骰子骨碌骨碌转！分别选中了 *');
				for(var i in dice_result){
					for(var j in options[dice_result[i]]){
						seg.segments.push(options[dice_result[i]][j]);
					}
					seg.addText('、');
				}
				seg.addText('* ！诶嘿~(ゝω・)☆');
			}
		}
	},
	{
		reg:/^help/i,
		callback:function(){

		}
	}, 
	{
		reg:/^bug\s*(.*)/i,
		callback:function(m){

		}
	}
	];
	for(var i in commands){
		var m=changeResult(commands[i].reg.exec(command));
		if(m!==null){
			commands[i].callback(m);
			console.log(JSON.stringify(seg.toSegments()));
		}
	}
}

function roll(max,min,count){
	var i=0;
	var ret=[];
	while(i<count){
		ret.push(parseInt(Math.random()*(max-min+1)+min));
		i++;
	}
	return ret;
}
function changeResult(result) {
	if(result===null)return result;
	// Check if the result contains named parameters
	var has_named = false;
	for (key in result) {
		if (!key.match(/^([0-9]+|index|input)$/)) {
			has_named = true;
			break;
		}
	}

	if (!has_named) {
		// Only one result, do not need to create an array
		if (result.length === 2) {
			return result[1];
		}

		// Create a clean result array without the first element
		var changed = [];
		for (var i = 1; i < result.length; ++i) {
			changed.push(result[i]);
		}
		return changed;
	}

	// Create a clean object without array elements, 'index' and 'input'
	var changed = {};
	for (key in result) {
		if (!key.match(/^([0-9]+|index|input)$/)) {
			if (key[0] == '_') {
				changed[key.substr(1)] = +result[key];
			} else {
				changed[key] = result[key];
			}
		}
	}
	return changed;
}