//progress 进度条
import console;

class console.progress{
	ctor(backText,foreText){
		this.backTextColor = ..console.color.darkGray;
		this.foreTextColor = ..console.color.yellow;
		this.doneColor = ..console.color.green;
		this.doneText = "已完成!";
		this.backText = backText : "─";
		this.foreText = foreText : backText : "─"; 
		this.percent = 0;
		this.done = false;
	};
	addProgress = function(percent,msg){
		return this.setProgress(this.percent+percent,msg);
	};
	setProgress = function(percent,msg){
		
		if(!this.running || !..console.getWindow() || ..console.isCursorVisible() ){
			..console.openForWrite();
			..console.setCursorVisible(false);
			this.running = true;
		}
		elseif(this.running) {
			if(this.done) return;
			
			var x,y = ..console.getPos(); 
			..console.setPos(0,y-1); 
			if(this.message){ ..console.setPos(0,y-2); }
		}
		 
		var width = this.width;
		if(!width) width = ..console.getSize() - 2;
		
		if( percent > 100 ) percent = 100;
		if( percent < 0 ) percent = 0;
		if(percent){
			if(this.percent === percent){return;}
			
			var foreTextColor = percent>=100 ? this.doneColor : this.foreTextColor;
			
			var line = '\r' + this.foreText:"─"
			..console.writeColorText(line,foreTextColor,this.foreColor); 
			
			var x,y = ..console.getPos();
			var len = ..math.floor( (width/100*percent) / x )-1;
			if(len>0){
				line = ..string.repeat(len,this.foreText:"─");
				..console.writeColorText(line,foreTextColor,this.foreColor); 
			} 
		}
		this.percent = percent;
		
		var x,y = ..console.getPos();
		if( (percent <100 ) && width>x ){
			width = width - x;
			var line = this.backText:"─"
			..console.writeColorText(line,this.backTextColor,this.backColor); 
			
			var x2,y = ..console.getPos();
			var len = ..math.floor( width / (x2-x) ) - 1;
			
			if(len>0){
				line = ..string.repeat(len,this.backText:"─");
				..console.writeColorText(line,this.backTextColor,this.backColor); 
			} 
		}
		
		if((percent>=100) && this.doneText && (this.message != this.doneText)){
			msg = this.doneText;
		}
		
		var x,y = ..console.getPos();
		if(this.singleLine){
			if(msg){
				this.message = msg;
				..console.writeText(" ",msg);
				..console.eraseToEndOfLine(); 
			}
			..console.setPos(0,y+1);	
		}
		else { 
			..console.setPos(0,y+1);
			if(msg){
				this.message = msg;
				..console.writeText(msg);
				..console.eraseToEndOfLine(); 
			}
				
			if(this.message) {
				..console.setPos(0,y+2);
			}
		}
		this.running = true;
		
		if(percent>=100){
			..console.setCursorVisible(true);
			this.done = true;
		}
	}
	reset = function(){
		..console.setCursorVisible(true);
		this.running = false;
		this.done = false;
	}
	clear = function(){
		
		if(this.running || this.done ){
			var x,y = ..console.getPos(); 
			if(this.message){
				..console.clearScreen(0,y-2);
			}	
			else{
				..console.clearScreen(0,y-2);
			}	
		}
		
		this.reset();
	}
}

console.progress.singleLine = function(width,backText,foreText){
	var bar = console.progress("█","█");
	bar.width = width : 30;
	bar.singleLine = true;
	return bar;
}


/**intellisense()
console.progress = 控制台简单进度条。\n[使用范例](doc://example/Console/loading.html)
console.progress( = 创建控制台简单进度条
console.progress(.(背景字符,前景字符) = 所有参数可选，默认值都设为"─"字符
console.progress.singleLine( = 创建控制台简单进度条,\n进度条与文本显示在同一行
console.progress.singleLine(.(宽度,背景字符,前景字符) = 所有参数可选，默认值都设为"─"字符
console.progress.singleLine(） = !stdConsoleProgress.
console.progress() = !stdConsoleProgress.
end intellisense**/

/**intellisense(!stdConsoleProgress)
clear() = 清除在屏幕上显示的进度
reset() = 重置进度条\n如果上次进度没有完成,\n要显示新的进度条前必须调用此函数
addProgress( = 增加进度
addProgress(.(百分比,状态文本) = 百分比为0到100的数值，状态文本为可选参数
setProgress( = 设置进度
setProgress(.(百分比,状态文本) = 百分比为0到100的数值，状态文本为可选参数
backText = 背景字符，默认为"─"\n可以为空格，但不能为空字符串
foreText = 前景字符，默认为"─"\n可以为空格，但不能为空字符串
backTextColor = 背景字符颜色,\n请使用console.color下面的值指定
foreTextColor = 前景字符颜色,\n请使用console.color下面的值指定
backColor = 背景颜色,\n请使用console.color下面的值指定
foreColor = 前景颜色,\n请使用console.color下面的值指定
doneColor = 进度完成后的字符颜色,\n请使用console.color下面的值指定
doneText = 进度完成后的显示文本
end intellisense**/