// var app = getApp();
var encode = require("./encoding.js");
var jpPrinter = {
  createNew: function () {
    var jpPrinter = {};
    var data = "";
    var command = []

    jpPrinter.name = "标签模式";

    jpPrinter.init = function () { };

    jpPrinter.addCommand = function (content) {  //将指令转成数组装起
      var code = new encode.TextEncoder(
        'gb18030', {
          NONSTANDARD_allowLegacyEncoding: true
        }).encode(content)
      for (var i = 0; i < code.length; ++i) {
        command.push(code[i])
      }
    }

    jpPrinter.setSize = function (pageWidght, pageHeight) { //设置页面大小
      data = "SIZE " + pageWidght.toString() + " mm" + "," + pageHeight.toString() + " mm" + "\r\n";
      jpPrinter.addCommand(data)
    };

    jpPrinter.setSpeed = function (printSpeed) { //设置打印机速度
      data = "SPEED " + printSpeed.toString() + "\r\n";
      jpPrinter.addCommand(data)
    };

    jpPrinter.setDensity = function (printDensity) { //设置打印机浓度
      data = "DENSITY " + printDensity.toString() + "\r\n";
      jpPrinter.addCommand(data)
    };

    jpPrinter.setGap = function (printGap) { //传感器
      data = "GAP " + printGap.toString() + " mm\r\n";
      jpPrinter.addCommand(data)
    };

    jpPrinter.setCountry = function (country) { //选择国际字符集
      /*
      001:USA
      002:French
      003:Latin America
      034:Spanish
      039:Italian
      044:United Kingdom
      046:Swedish
      047:Norwegian
      049:German
       */
      data = "COUNTRY " + country + "\r\n";
      jpPrinter.addCommand(data)
    };

    jpPrinter.setCodepage = function (codepage) { //选择国际代码页
      /*
      8-bit codepage 字符集代表
      437:United States
      850:Multilingual
      852:Slavic
      860:Portuguese
      863:Canadian/French
      865:Nordic
      Windows code page
      1250:Central Europe
      1252:Latin I
      1253:Greek
      1254:Turkish
      以下代码页仅限于 12×24 dot 英数字体
      WestEurope:WestEurope
      Greek:Greek
      Hebrew:Hebrew
      EastEurope:EastEurope
      Iran:Iran
      IranII:IranII
      Latvian:Latvian
      Arabic:Arabic
      Vietnam:Vietnam
      Uygur:Uygur
      Thai:Thai
      1252:Latin I
      1257:WPC1257
      1251:WPC1251
      866:Cyrillic
      858:PC858
      747:PC747
      864:PC864
      1001:PC100
      */
      data = "CODEPAGE " + codepage + "\r\n";
      jpPrinter.addCommand(data)
    }

    jpPrinter.setCls = function () { //清除打印机缓存
      data = "CLS" + "\r\n";
      jpPrinter.addCommand(data)
    };

    jpPrinter.setFeed = function (feed) { //将纸向前推出n
      data = "FEED " + feed + "\r\n";
      jpPrinter.addCommand(data)
    };

    jpPrinter.setBackFeed = function (backup) { //将纸向后回拉n
      data = "BACKFEED " + backup + "\r\n";
      jpPrinter.addCommand(data)
    }

    jpPrinter.setDirection = function (direction) { //设置打印方向，参考编程手册  
      data = "DIRECTION " + direction + "\r\n";
      jpPrinter.addCommand(data)
    };

    jpPrinter.setReference = function (x, y) { //设置坐标原点，与打印方向有关
      data = "REFERENCE " + x + "," + y + "\r\n";
      jpPrinter.addCommand(data)
    };

    jpPrinter.setFromfeed = function () { //根据Size进一张标签纸
      data = "FORMFEED \r\n";
      jpPrinter.addCommand(data)
    };

    jpPrinter.setHome = function () { //根据Size找到下一张标签纸的位置
      data = "HOME \r\n";
      jpPrinter.addCommand(data)
    };

    jpPrinter.setSound = function (level, interval) { //控制蜂鸣器
      data = "SOUND " + level + "," + interval + "\r\n";
      jpPrinter.addCommand(data)
    };

    jpPrinter.setLimitfeed = function (limit) { // 检测垂直间距
      data = "LIMITFEED " + limit + "\r\n";
      jpPrinter.addCommand(data)
    };

    jpPrinter.setBar = function (x, y, width, height) { //绘制线条
      data = "BAR " + x + "," + y + "," + width + "," + height + "\r\n"
      jpPrinter.addCommand(data)
    };

    jpPrinter.setBox = function (x_start, y_start, x_end, y_end, thickness) { //绘制方框
      data = "BOX " + x_start + "," + y_start + "," + x_end + "," + y_end + "," + thickness + "\r\n";
      jpPrinter.addCommand(data)
    };

    jpPrinter.setErase = function (x_start, y_start, x_width, y_height) { //清除指定区域的数据
      data = "ERASE " + x_start + "," + y_start + "," + x_width + "," + y_height + "\r\n";
      jpPrinter.addCommand(data)
    };

    jpPrinter.setReverse = function (x_start, y_start, x_width, y_height) { //将指定的区域反相打印
      data = "REVERSE " + x_start + "," + y_start + "," + x_width + "," + y_height + "\r\n";
      jpPrinter.addCommand(data)
    };

    jpPrinter.setText = function (x, y, font, x_, y_, str) { //打印文字
      data = "TEXT " + x + "," + y + ",\"" + font + "\"," + 0 + "," + x_ + "," + y_ + "," + "\"" + str + "\"\r\n"
      jpPrinter.addCommand(data)
    };

    jpPrinter.setQR = function (x, y, level, width, mode, content) { //打印二维码
      data = "QRCODE " + x + "," + y + "," + level + "," + width + "," + mode + "," + 0 + ",\"" + content + "\"\r\n"
      jpPrinter.addCommand(data)
    };
	jpPrinter.setBold = function (bold) {
      data = "SETBOLD " + bold + "\r\n";
      jpPrinter.addCommand(data)
    };
    jpPrinter.setBar = function (x, y, codetype, height, readable, narrow, wide, content) { //打印条形码
      data = "BARCODE " + x + "," + y + ",\"" + codetype + "\"," + height + "," + readable + "," + 0 + "," + narrow + "," + wide + ",\"" + content + "\"\r\n"
      jpPrinter.addCommand(data)
    };

    jpPrinter.setBitmap = function (x, y, mode, res) {  //添加图片，res为画布参数
      // console.log(res)
	  console.log("jpPrinter.setBitmap()")
      var width = parseInt((res.width + 7) / 8 * 8 / 8)
	  console.log("jpPrinter.setBitmap() --0")
      var height = res.height;
      var time = 1;
      var temp = res.data.length - width * 32;
      var pointList = []
      console.log(width + "--" + height)
      data = "BITMAP " + x + "," + y + "," + width + "," + height + "," + mode + ","
	   console.log("jpPrinter.setBitmap() --1")
      jpPrinter.addCommand(data)
      for (var i = 0; i < height; ++i) {
        console.log(temp)
        for (var j = 0; j < width; ++j) {
          for (var k = 0; k < 32; k += 4) {
            if (res.data[temp] == 0 && res.data[temp + 1] == 0 && res.data[temp + 2] == 0 && res.data[temp + 3] == 0) {
              pointList.push(1)
            } else {
              pointList.push(0)
            }
            temp += 4
          }
        }
        time++
        temp = res.data.length - width * 32 * time
      }
	   console.log("jpPrinter.setBitmap() --4")
      for (var i = 0; i < pointList.length; i += 8) {
        var p = pointList[i] * 128 + pointList[i + 1] * 64 + pointList[i + 2] * 32 + pointList[i + 3] * 16 + pointList[i + 4] * 8 + pointList[i + 5] * 4 + pointList[i + 6] * 2 + pointList[i + 7]
        command.push(p)
      }
    };
// 固定灰度阈值（128以上的都看作白色）
		jpPrinter.setBitmap2 = function(x, y, mode, res) { //添加图片，res为画布参数
			var width = parseInt((res.width) / 8 * 8 / 8)
			var height = res.height
			var imgWidth = res.width
			var time = 1;
			var temp = res.data.length - width * 32;
			var pointList = []
			var resultData = []
			console.log(width + "--" + height)
			data = "BITMAP " + x + "," + y + "," + width + "," + height + "," + mode + ","
			jpPrinter.addCommand(data)
			//console.log(res.data)
			console.log('---以上是原始数据---')

			//for循环顺序不要错了，外层遍历高度，内层遍历宽度，因为横向每8个像素点组成一个字节
			for (var y = 0; y < height; y++) {
				for (var x = 0; x < imgWidth; x++) {
					let r = res.data[(y * imgWidth + x) * 4];
					let g = res.data[(y * imgWidth + x) * 4 + 1];
					let b = res.data[(y * imgWidth + x) * 4 + 2];
					let a = res.data[(y * imgWidth + x) * 4 + 3]
					//console.log(`当前${y}行${x}列像素,rgba值:(${r},${g},${b},${a})`)
					// 像素灰度值
					let grayColor = r * 0.299 + g * 0.587 + b * 0.114
					//灰度值大于128位 
					//1不打印, 0打印 （参考：佳博标签打印机编程手册tspl）
					if (grayColor > 128) {
						pointList.push(1)
					} else {
						pointList.push(0)
					}
				}
			}
			//console.log(pointList)
			for (var i = 0; i < pointList.length; i += 8) {
				var p = pointList[i] * 128 + pointList[i + 1] * 64 + pointList[i + 2] * 32 + pointList[i +
						3] * 16 + pointList[i + 4] * 8 + pointList[i + 5] * 4 + pointList[i + 6] * 2 +
					pointList[i + 7]
				resultData.push(p)
			}
			console.log('最终数据：')
			//console.log(resultData)
			for (var i = 0; i < resultData.length; ++i) {
				command.push(intToByte(resultData[i]))
			}
		};
	function intToByte(i) {
			// 此处关键 -- android是java平台 byte数值范围是 [-128, 127]
			// 因为java平台的byte类型是有符号的 最高位表示符号，所以数值范围固定
			// 而图片计算出来的是数值是 0 -255 属于int类型
			// 所以把int 转换成byte类型 
			//#ifdef APP-PLUS
				var b = i & 0xFF;
				var c = 0;
				if (b >= 128) {
					c = b % 128;
					c = -1 * (128 - c);
				} else {
					c = b;
				}
				return c
			//#endif
			// 而微信小程序不需要，因为小程序api接收的是 无符号8位
			//#ifdef MP-WEIXIN
				return i
			//#endif
		};
    jpPrinter.setPagePrint = function () { //打印页面
      data = "PRINT 1,1\r\n"
      jpPrinter.addCommand(data)
    };
    //获取打印数据
    jpPrinter.getData = function () {
      return command;
    };

    return jpPrinter;
  }
};

module.exports.jpPrinter = jpPrinter;