import GIF from "./Gif";
import GIFE from "./gifjs";
var AwesomeQRCode;

function QR8bitByte(data) {
  this.mode = QRMode.MODE_8BIT_BYTE;
  this.data = data;
  this.parsedData = [];
  for (var i = 0, l = this.data.length; i < l; i++) {
    var byteArray = [];
    var code = this.data.charCodeAt(i);
    if (code > 0x10000) {
      byteArray[0] = 0xf0 | ((code & 0x1c0000) >>> 18);
      byteArray[1] = 0x80 | ((code & 0x3f000) >>> 12);
      byteArray[2] = 0x80 | ((code & 0xfc0) >>> 6);
      byteArray[3] = 0x80 | (code & 0x3f);
    } else if (code > 0x800) {
      byteArray[0] = 0xe0 | ((code & 0xf000) >>> 12);
      byteArray[1] = 0x80 | ((code & 0xfc0) >>> 6);
      byteArray[2] = 0x80 | (code & 0x3f);
    } else if (code > 0x80) {
      byteArray[0] = 0xc0 | ((code & 0x7c0) >>> 6);
      byteArray[1] = 0x80 | (code & 0x3f);
    } else {
      byteArray[0] = code;
    }
    this.parsedData.push(byteArray);
  }
  this.parsedData = Array.prototype.concat.apply([], this.parsedData);
  if (this.parsedData.length != this.data.length) {
    this.parsedData.unshift(191);
    this.parsedData.unshift(187);
    this.parsedData.unshift(239);
  }
}

QR8bitByte.prototype = {
  getLength: function(buffer) {
    return this.parsedData.length;
  },
  write: function(buffer) {
    for (var i = 0, l = this.parsedData.length; i < l; i++) {
      buffer.put(this.parsedData[i], 8);
    }
  }
};

function QRCodeModel(typeNumber, errorCorrectLevel) {
  this.typeNumber = typeNumber;
  this.errorCorrectLevel = errorCorrectLevel;
  this.modules = null;
  this.moduleCount = 0;
  this.dataCache = null;
  this.dataList = [];
}

QRCodeModel.prototype = {
  addData: function(data) {
    var newData = new QR8bitByte(data);
    this.dataList.push(newData);
    this.dataCache = null;
  },
  isDark: function(row, col) {
    if (
      row < 0 ||
      this.moduleCount <= row ||
      col < 0 ||
      this.moduleCount <= col
    ) {
      throw new Error(row + "," + col);
    }
    return this.modules[row][col];
  },
  getModuleCount: function() {
    return this.moduleCount;
  },
  make: function() {
    /////////////////////////////////////////////
    if (this.typeNumber < 1) {
      var typeNumber = 1;
      for (typeNumber = 1; typeNumber < 40; typeNumber++) {
        var rsBlocks = QRRSBlock.getRSBlocks(
          typeNumber,
          this.errorCorrectLevel
        );

        var buffer = new QRBitBuffer();
        var totalDataCount = 0;
        for (var i = 0; i < rsBlocks.length; i++) {
          totalDataCount += rsBlocks[i].dataCount;
        }

        for (var i = 0; i < this.dataList.length; i++) {
          var data = this.dataList[i];
          buffer.put(data.mode, 4);
          buffer.put(
            data.getLength(),
            QRUtil.getLengthInBits(data.mode, typeNumber)
          );
          data.write(buffer);
        }
        if (buffer.getLengthInBits() <= totalDataCount * 8) break;
      }
      this.typeNumber = typeNumber;
    }
    /////////////////////////////////////////////
    this.makeImpl(!1, this.getBestMaskPattern());
  },
  makeImpl: function(test, maskPattern) {
    this.moduleCount = this.typeNumber * 4 + 17;
    this.modules = new Array(this.moduleCount);
    for (var row = 0; row < this.moduleCount; row++) {
      this.modules[row] = new Array(this.moduleCount);
      for (var col = 0; col < this.moduleCount; col++) {
        this.modules[row][col] = null;
      }
    }
    this.setupPositionProbePattern(0, 0);
    this.setupPositionProbePattern(this.moduleCount - 7, 0);
    this.setupPositionProbePattern(0, this.moduleCount - 7);
    this.setupPositionAdjustPattern();
    this.setupTimingPattern();
    this.setupTypeInfo(test, maskPattern);
    if (this.typeNumber >= 7) {
      this.setupTypeNumber(test);
    }
    if (this.dataCache == null) {
      this.dataCache = QRCodeModel.createData(
        this.typeNumber,
        this.errorCorrectLevel,
        this.dataList
      );
    }
    this.mapData(this.dataCache, maskPattern);
  },
  setupPositionProbePattern: function(row, col) {
    for (var r = -1; r <= 7; r++) {
      if (row + r <= -1 || this.moduleCount <= row + r) continue;
      for (var c = -1; c <= 7; c++) {
        if (col + c <= -1 || this.moduleCount <= col + c) continue;
        if (
          (0 <= r && r <= 6 && (c == 0 || c == 6)) ||
          (0 <= c && c <= 6 && (r == 0 || r == 6)) ||
          (2 <= r && r <= 4 && 2 <= c && c <= 4)
        ) {
          this.modules[row + r][col + c] = !0;
        } else {
          this.modules[row + r][col + c] = !1;
        }
      }
    }
  },
  getBestMaskPattern: function() {
    var minLostPoint = 0;
    var pattern = 0;
    for (var i = 0; i < 8; i++) {
      this.makeImpl(!0, i);
      var lostPoint = QRUtil.getLostPoint(this);
      if (i == 0 || minLostPoint > lostPoint) {
        minLostPoint = lostPoint;
        pattern = i;
      }
    }
    return pattern;
  },
  createMovieClip: function(target_mc, instance_name, depth) {
    var qr_mc = target_mc.createEmptyMovieClip(instance_name, depth);
    var cs = 1;
    this.make();
    for (var row = 0; row < this.modules.length; row++) {
      var y = row * cs;
      for (var col = 0; col < this.modules[row].length; col++) {
        var x = col * cs;
        var dark = this.modules[row][col];
        if (dark) {
          qr_mc.beginFill(0, 100);
          qr_mc.moveTo(x, y);
          qr_mc.lineTo(x + cs, y);
          qr_mc.lineTo(x + cs, y + cs);
          qr_mc.lineTo(x, y + cs);
          qr_mc.endFill();
        }
      }
    }
    return qr_mc;
  },
  setupTimingPattern: function() {
    for (var r = 8; r < this.moduleCount - 8; r++) {
      if (this.modules[r][6] != null) {
        continue;
      }
      this.modules[r][6] = r % 2 == 0;
    }
    for (var c = 8; c < this.moduleCount - 8; c++) {
      if (this.modules[6][c] != null) {
        continue;
      }
      this.modules[6][c] = c % 2 == 0;
    }
  },
  setupPositionAdjustPattern: function() {
    var pos = QRUtil.getPatternPosition(this.typeNumber);
    for (var i = 0; i < pos.length; i++) {
      for (var j = 0; j < pos.length; j++) {
        var row = pos[i];
        var col = pos[j];
        if (this.modules[row][col] != null) {
          continue;
        }
        for (var r = -2; r <= 2; r++) {
          for (var c = -2; c <= 2; c++) {
            if (r == -2 || r == 2 || c == -2 || c == 2 || (r == 0 && c == 0)) {
              this.modules[row + r][col + c] = !0;
            } else {
              this.modules[row + r][col + c] = !1;
            }
          }
        }
      }
    }
  },
  setupTypeNumber: function(test) {
    var bits = QRUtil.getBCHTypeNumber(this.typeNumber);
    for (var i = 0; i < 18; i++) {
      var mod = !test && ((bits >> i) & 1) == 1;
      this.modules[Math.floor(i / 3)][(i % 3) + this.moduleCount - 8 - 3] = mod;
    }
    for (var i = 0; i < 18; i++) {
      var mod = !test && ((bits >> i) & 1) == 1;
      this.modules[(i % 3) + this.moduleCount - 8 - 3][Math.floor(i / 3)] = mod;
    }
  },
  setupTypeInfo: function(test, maskPattern) {
    var data = (this.errorCorrectLevel << 3) | maskPattern;
    var bits = QRUtil.getBCHTypeInfo(data);
    for (var i = 0; i < 15; i++) {
      var mod = !test && ((bits >> i) & 1) == 1;
      if (i < 6) {
        this.modules[i][8] = mod;
      } else if (i < 8) {
        this.modules[i + 1][8] = mod;
      } else {
        this.modules[this.moduleCount - 15 + i][8] = mod;
      }
    }
    for (var i = 0; i < 15; i++) {
      var mod = !test && ((bits >> i) & 1) == 1;
      if (i < 8) {
        this.modules[8][this.moduleCount - i - 1] = mod;
      } else if (i < 9) {
        this.modules[8][15 - i - 1 + 1] = mod;
      } else {
        this.modules[8][15 - i - 1] = mod;
      }
    }
    this.modules[this.moduleCount - 8][8] = !test;
  },
  mapData: function(data, maskPattern) {
    var inc = -1;
    var row = this.moduleCount - 1;
    var bitIndex = 7;
    var byteIndex = 0;
    for (var col = this.moduleCount - 1; col > 0; col -= 2) {
      if (col == 6) col--;
      while (!0) {
        for (var c = 0; c < 2; c++) {
          if (this.modules[row][col - c] == null) {
            var dark = !1;
            if (byteIndex < data.length) {
              dark = ((data[byteIndex] >>> bitIndex) & 1) == 1;
            }
            var mask = QRUtil.getMask(maskPattern, row, col - c);
            if (mask) {
              dark = !dark;
            }
            this.modules[row][col - c] = dark;
            bitIndex--;
            if (bitIndex == -1) {
              byteIndex++;
              bitIndex = 7;
            }
          }
        }
        row += inc;
        if (row < 0 || this.moduleCount <= row) {
          row -= inc;
          inc = -inc;
          break;
        }
      }
    }
  }
};
QRCodeModel.PAD0 = 0xec;
QRCodeModel.PAD1 = 0x11;
QRCodeModel.createData = function(typeNumber, errorCorrectLevel, dataList) {
  var rsBlocks = QRRSBlock.getRSBlocks(typeNumber, errorCorrectLevel);
  var buffer = new QRBitBuffer();
  for (var i = 0; i < dataList.length; i++) {
    var data = dataList[i];
    buffer.put(data.mode, 4);
    buffer.put(data.getLength(), QRUtil.getLengthInBits(data.mode, typeNumber));
    data.write(buffer);
  }
  var totalDataCount = 0;
  for (var i = 0; i < rsBlocks.length; i++) {
    totalDataCount += rsBlocks[i].dataCount;
  }
  if (buffer.getLengthInBits() > totalDataCount * 8) {
    throw new Error(
      "code length overflow. (" +
        buffer.getLengthInBits() +
        ">" +
        totalDataCount * 8 +
        ")"
    );
  }
  if (buffer.getLengthInBits() + 4 <= totalDataCount * 8) {
    buffer.put(0, 4);
  }
  while (buffer.getLengthInBits() % 8 != 0) {
    buffer.putBit(!1);
  }
  while (!0) {
    if (buffer.getLengthInBits() >= totalDataCount * 8) {
      break;
    }
    buffer.put(QRCodeModel.PAD0, 8);
    if (buffer.getLengthInBits() >= totalDataCount * 8) {
      break;
    }
    buffer.put(QRCodeModel.PAD1, 8);
  }
  return QRCodeModel.createBytes(buffer, rsBlocks);
};
QRCodeModel.createBytes = function(buffer, rsBlocks) {
  var offset = 0;
  var maxDcCount = 0;
  var maxEcCount = 0;
  var dcdata = new Array(rsBlocks.length);
  var ecdata = new Array(rsBlocks.length);
  for (var r = 0; r < rsBlocks.length; r++) {
    var dcCount = rsBlocks[r].dataCount;
    var ecCount = rsBlocks[r].totalCount - dcCount;
    maxDcCount = Math.max(maxDcCount, dcCount);
    maxEcCount = Math.max(maxEcCount, ecCount);
    dcdata[r] = new Array(dcCount);
    for (var i = 0; i < dcdata[r].length; i++) {
      dcdata[r][i] = 0xff & buffer.buffer[i + offset];
    }
    offset += dcCount;
    var rsPoly = QRUtil.getErrorCorrectPolynomial(ecCount);
    var rawPoly = new QRPolynomial(dcdata[r], rsPoly.getLength() - 1);
    var modPoly = rawPoly.mod(rsPoly);
    ecdata[r] = new Array(rsPoly.getLength() - 1);
    for (var i = 0; i < ecdata[r].length; i++) {
      var modIndex = i + modPoly.getLength() - ecdata[r].length;
      ecdata[r][i] = modIndex >= 0 ? modPoly.get(modIndex) : 0;
    }
  }
  var totalCodeCount = 0;
  for (var i = 0; i < rsBlocks.length; i++) {
    totalCodeCount += rsBlocks[i].totalCount;
  }
  var data = new Array(totalCodeCount);
  var index = 0;
  for (var i = 0; i < maxDcCount; i++) {
    for (var r = 0; r < rsBlocks.length; r++) {
      if (i < dcdata[r].length) {
        data[index++] = dcdata[r][i];
      }
    }
  }
  for (var i = 0; i < maxEcCount; i++) {
    for (var r = 0; r < rsBlocks.length; r++) {
      if (i < ecdata[r].length) {
        data[index++] = ecdata[r][i];
      }
    }
  }
  return data;
};
var QRMode = {
  MODE_NUMBER: 1 << 0,
  MODE_ALPHA_NUM: 1 << 1,
  MODE_8BIT_BYTE: 1 << 2,
  MODE_KANJI: 1 << 3
};
var QRErrorCorrectLevel = { L: 1, M: 0, Q: 3, H: 2 };
var QRMaskPattern = {
  PATTERN000: 0,
  PATTERN001: 1,
  PATTERN010: 2,
  PATTERN011: 3,
  PATTERN100: 4,
  PATTERN101: 5,
  PATTERN110: 6,
  PATTERN111: 7
};
var QRUtil = {
  PATTERN_POSITION_TABLE: [
    [],
    [6, 18],
    [6, 22],
    [6, 26],
    [6, 30],
    [6, 34],
    [6, 22, 38],
    [6, 24, 42],
    [6, 26, 46],
    [6, 28, 50],
    [6, 30, 54],
    [6, 32, 58],
    [6, 34, 62],
    [6, 26, 46, 66],
    [6, 26, 48, 70],
    [6, 26, 50, 74],
    [6, 30, 54, 78],
    [6, 30, 56, 82],
    [6, 30, 58, 86],
    [6, 34, 62, 90],
    [6, 28, 50, 72, 94],
    [6, 26, 50, 74, 98],
    [6, 30, 54, 78, 102],
    [6, 28, 54, 80, 106],
    [6, 32, 58, 84, 110],
    [6, 30, 58, 86, 114],
    [6, 34, 62, 90, 118],
    [6, 26, 50, 74, 98, 122],
    [6, 30, 54, 78, 102, 126],
    [6, 26, 52, 78, 104, 130],
    [6, 30, 56, 82, 108, 134],
    [6, 34, 60, 86, 112, 138],
    [6, 30, 58, 86, 114, 142],
    [6, 34, 62, 90, 118, 146],
    [6, 30, 54, 78, 102, 126, 150],
    [6, 24, 50, 76, 102, 128, 154],
    [6, 28, 54, 80, 106, 132, 158],
    [6, 32, 58, 84, 110, 136, 162],
    [6, 26, 54, 82, 110, 138, 166],
    [6, 30, 58, 86, 114, 142, 170]
  ],
  G15:
    (1 << 10) | (1 << 8) | (1 << 5) | (1 << 4) | (1 << 2) | (1 << 1) | (1 << 0),
  G18:
    (1 << 12) |
    (1 << 11) |
    (1 << 10) |
    (1 << 9) |
    (1 << 8) |
    (1 << 5) |
    (1 << 2) |
    (1 << 0),
  G15_MASK: (1 << 14) | (1 << 12) | (1 << 10) | (1 << 4) | (1 << 1),
  getBCHTypeInfo: function(data) {
    var d = data << 10;
    while (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G15) >= 0) {
      d ^=
        QRUtil.G15 << (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G15));
    }
    return ((data << 10) | d) ^ QRUtil.G15_MASK;
  },
  getBCHTypeNumber: function(data) {
    var d = data << 12;
    while (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G18) >= 0) {
      d ^=
        QRUtil.G18 << (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G18));
    }
    return (data << 12) | d;
  },
  getBCHDigit: function(data) {
    var digit = 0;
    while (data != 0) {
      digit++;
      data >>>= 1;
    }
    return digit;
  },
  getPatternPosition: function(typeNumber) {
    return QRUtil.PATTERN_POSITION_TABLE[typeNumber - 1];
  },
  getMask: function(maskPattern, i, j) {
    switch (maskPattern) {
      case QRMaskPattern.PATTERN000:
        return (i + j) % 2 == 0;
      case QRMaskPattern.PATTERN001:
        return i % 2 == 0;
      case QRMaskPattern.PATTERN010:
        return j % 3 == 0;
      case QRMaskPattern.PATTERN011:
        return (i + j) % 3 == 0;
      case QRMaskPattern.PATTERN100:
        return (Math.floor(i / 2) + Math.floor(j / 3)) % 2 == 0;
      case QRMaskPattern.PATTERN101:
        return ((i * j) % 2) + ((i * j) % 3) == 0;
      case QRMaskPattern.PATTERN110:
        return (((i * j) % 2) + ((i * j) % 3)) % 2 == 0;
      case QRMaskPattern.PATTERN111:
        return (((i * j) % 3) + ((i + j) % 2)) % 2 == 0;
      default:
        throw new Error("bad maskPattern:" + maskPattern);
    }
  },
  getErrorCorrectPolynomial: function(errorCorrectLength) {
    var a = new QRPolynomial([1], 0);
    for (var i = 0; i < errorCorrectLength; i++) {
      a = a.multiply(new QRPolynomial([1, QRMath.gexp(i)], 0));
    }
    return a;
  },
  getLengthInBits: function(mode, type) {
    if (1 <= type && type < 10) {
      switch (mode) {
        case QRMode.MODE_NUMBER:
          return 10;
        case QRMode.MODE_ALPHA_NUM:
          return 9;
        case QRMode.MODE_8BIT_BYTE:
          return 8;
        case QRMode.MODE_KANJI:
          return 8;
        default:
          throw new Error("mode:" + mode);
      }
    } else if (type < 27) {
      switch (mode) {
        case QRMode.MODE_NUMBER:
          return 12;
        case QRMode.MODE_ALPHA_NUM:
          return 11;
        case QRMode.MODE_8BIT_BYTE:
          return 16;
        case QRMode.MODE_KANJI:
          return 10;
        default:
          throw new Error("mode:" + mode);
      }
    } else if (type < 41) {
      switch (mode) {
        case QRMode.MODE_NUMBER:
          return 14;
        case QRMode.MODE_ALPHA_NUM:
          return 13;
        case QRMode.MODE_8BIT_BYTE:
          return 16;
        case QRMode.MODE_KANJI:
          return 12;
        default:
          throw new Error("mode:" + mode);
      }
    } else {
      throw new Error("type:" + type);
    }
  },
  getLostPoint: function(qrCode) {
    var moduleCount = qrCode.getModuleCount();
    var lostPoint = 0;
    for (var row = 0; row < moduleCount; row++) {
      for (var col = 0; col < moduleCount; col++) {
        var sameCount = 0;
        var dark = qrCode.isDark(row, col);
        for (var r = -1; r <= 1; r++) {
          if (row + r < 0 || moduleCount <= row + r) {
            continue;
          }
          for (var c = -1; c <= 1; c++) {
            if (col + c < 0 || moduleCount <= col + c) {
              continue;
            }
            if (r == 0 && c == 0) {
              continue;
            }
            if (dark == qrCode.isDark(row + r, col + c)) {
              sameCount++;
            }
          }
        }
        if (sameCount > 5) {
          lostPoint += 3 + sameCount - 5;
        }
      }
    }
    for (var row = 0; row < moduleCount - 1; row++) {
      for (var col = 0; col < moduleCount - 1; col++) {
        var count = 0;
        if (qrCode.isDark(row, col)) count++;
        if (qrCode.isDark(row + 1, col)) count++;
        if (qrCode.isDark(row, col + 1)) count++;
        if (qrCode.isDark(row + 1, col + 1)) count++;
        if (count == 0 || count == 4) {
          lostPoint += 3;
        }
      }
    }
    for (var row = 0; row < moduleCount; row++) {
      for (var col = 0; col < moduleCount - 6; col++) {
        if (
          qrCode.isDark(row, col) &&
          !qrCode.isDark(row, col + 1) &&
          qrCode.isDark(row, col + 2) &&
          qrCode.isDark(row, col + 3) &&
          qrCode.isDark(row, col + 4) &&
          !qrCode.isDark(row, col + 5) &&
          qrCode.isDark(row, col + 6)
        ) {
          lostPoint += 40;
        }
      }
    }
    for (var col = 0; col < moduleCount; col++) {
      for (var row = 0; row < moduleCount - 6; row++) {
        if (
          qrCode.isDark(row, col) &&
          !qrCode.isDark(row + 1, col) &&
          qrCode.isDark(row + 2, col) &&
          qrCode.isDark(row + 3, col) &&
          qrCode.isDark(row + 4, col) &&
          !qrCode.isDark(row + 5, col) &&
          qrCode.isDark(row + 6, col)
        ) {
          lostPoint += 40;
        }
      }
    }
    var darkCount = 0;
    for (var col = 0; col < moduleCount; col++) {
      for (var row = 0; row < moduleCount; row++) {
        if (qrCode.isDark(row, col)) {
          darkCount++;
        }
      }
    }
    var ratio =
      Math.abs((100 * darkCount) / moduleCount / moduleCount - 50) / 5;
    lostPoint += ratio * 10;
    return lostPoint;
  }
};
var QRMath = {
  glog: function(n) {
    if (n < 1) {
      throw new Error("glog(" + n + ")");
    }
    return QRMath.LOG_TABLE[n];
  },
  gexp: function(n) {
    while (n < 0) {
      n += 255;
    }
    while (n >= 256) {
      n -= 255;
    }
    return QRMath.EXP_TABLE[n];
  },
  EXP_TABLE: new Array(256),
  LOG_TABLE: new Array(256)
};
for (var i = 0; i < 8; i++) {
  QRMath.EXP_TABLE[i] = 1 << i;
}
for (var i = 8; i < 256; i++) {
  QRMath.EXP_TABLE[i] =
    QRMath.EXP_TABLE[i - 4] ^
    QRMath.EXP_TABLE[i - 5] ^
    QRMath.EXP_TABLE[i - 6] ^
    QRMath.EXP_TABLE[i - 8];
}
for (var i = 0; i < 255; i++) {
  QRMath.LOG_TABLE[QRMath.EXP_TABLE[i]] = i;
}

function QRPolynomial(num, shift) {
  if (num.length == undefined) {
    throw new Error(num.length + "/" + shift);
  }
  var offset = 0;
  while (offset < num.length && num[offset] == 0) {
    offset++;
  }
  this.num = new Array(num.length - offset + shift);
  for (var i = 0; i < num.length - offset; i++) {
    this.num[i] = num[i + offset];
  }
}

QRPolynomial.prototype = {
  get: function(index) {
    return this.num[index];
  },
  getLength: function() {
    return this.num.length;
  },
  multiply: function(e) {
    var num = new Array(this.getLength() + e.getLength() - 1);
    for (var i = 0; i < this.getLength(); i++) {
      for (var j = 0; j < e.getLength(); j++) {
        num[i + j] ^= QRMath.gexp(
          QRMath.glog(this.get(i)) + QRMath.glog(e.get(j))
        );
      }
    }
    return new QRPolynomial(num, 0);
  },
  mod: function(e) {
    if (this.getLength() - e.getLength() < 0) {
      return this;
    }
    var ratio = QRMath.glog(this.get(0)) - QRMath.glog(e.get(0));
    var num = new Array(this.getLength());
    for (var i = 0; i < this.getLength(); i++) {
      num[i] = this.get(i);
    }
    for (var i = 0; i < e.getLength(); i++) {
      num[i] ^= QRMath.gexp(QRMath.glog(e.get(i)) + ratio);
    }
    return new QRPolynomial(num, 0).mod(e);
  }
};

function QRRSBlock(totalCount, dataCount) {
  this.totalCount = totalCount;
  this.dataCount = dataCount;
}

QRRSBlock.RS_BLOCK_TABLE = [
  [1, 26, 19],
  [1, 26, 16],
  [1, 26, 13],
  [1, 26, 9],
  [1, 44, 34],
  [1, 44, 28],
  [1, 44, 22],
  [1, 44, 16],
  [1, 70, 55],
  [1, 70, 44],
  [2, 35, 17],
  [2, 35, 13],
  [1, 100, 80],
  [2, 50, 32],
  [2, 50, 24],
  [4, 25, 9],
  [1, 134, 108],
  [2, 67, 43],
  [2, 33, 15, 2, 34, 16],
  [2, 33, 11, 2, 34, 12],
  [2, 86, 68],
  [4, 43, 27],
  [4, 43, 19],
  [4, 43, 15],
  [2, 98, 78],
  [4, 49, 31],
  [2, 32, 14, 4, 33, 15],
  [4, 39, 13, 1, 40, 14],
  [2, 121, 97],
  [2, 60, 38, 2, 61, 39],
  [4, 40, 18, 2, 41, 19],
  [4, 40, 14, 2, 41, 15],
  [2, 146, 116],
  [3, 58, 36, 2, 59, 37],
  [4, 36, 16, 4, 37, 17],
  [4, 36, 12, 4, 37, 13],
  [2, 86, 68, 2, 87, 69],
  [4, 69, 43, 1, 70, 44],
  [6, 43, 19, 2, 44, 20],
  [6, 43, 15, 2, 44, 16],
  [4, 101, 81],
  [1, 80, 50, 4, 81, 51],
  [4, 50, 22, 4, 51, 23],
  [3, 36, 12, 8, 37, 13],
  [2, 116, 92, 2, 117, 93],
  [6, 58, 36, 2, 59, 37],
  [4, 46, 20, 6, 47, 21],
  [7, 42, 14, 4, 43, 15],
  [4, 133, 107],
  [8, 59, 37, 1, 60, 38],
  [8, 44, 20, 4, 45, 21],
  [12, 33, 11, 4, 34, 12],
  [3, 145, 115, 1, 146, 116],
  [4, 64, 40, 5, 65, 41],
  [11, 36, 16, 5, 37, 17],
  [11, 36, 12, 5, 37, 13],
  [5, 109, 87, 1, 110, 88],
  [5, 65, 41, 5, 66, 42],
  [5, 54, 24, 7, 55, 25],
  [11, 36, 12],
  [5, 122, 98, 1, 123, 99],
  [7, 73, 45, 3, 74, 46],
  [15, 43, 19, 2, 44, 20],
  [3, 45, 15, 13, 46, 16],
  [1, 135, 107, 5, 136, 108],
  [10, 74, 46, 1, 75, 47],
  [1, 50, 22, 15, 51, 23],
  [2, 42, 14, 17, 43, 15],
  [5, 150, 120, 1, 151, 121],
  [9, 69, 43, 4, 70, 44],
  [17, 50, 22, 1, 51, 23],
  [2, 42, 14, 19, 43, 15],
  [3, 141, 113, 4, 142, 114],
  [3, 70, 44, 11, 71, 45],
  [17, 47, 21, 4, 48, 22],
  [9, 39, 13, 16, 40, 14],
  [3, 135, 107, 5, 136, 108],
  [3, 67, 41, 13, 68, 42],
  [15, 54, 24, 5, 55, 25],
  [15, 43, 15, 10, 44, 16],
  [4, 144, 116, 4, 145, 117],
  [17, 68, 42],
  [17, 50, 22, 6, 51, 23],
  [19, 46, 16, 6, 47, 17],
  [2, 139, 111, 7, 140, 112],
  [17, 74, 46],
  [7, 54, 24, 16, 55, 25],
  [34, 37, 13],
  [4, 151, 121, 5, 152, 122],
  [4, 75, 47, 14, 76, 48],
  [11, 54, 24, 14, 55, 25],
  [16, 45, 15, 14, 46, 16],
  [6, 147, 117, 4, 148, 118],
  [6, 73, 45, 14, 74, 46],
  [11, 54, 24, 16, 55, 25],
  [30, 46, 16, 2, 47, 17],
  [8, 132, 106, 4, 133, 107],
  [8, 75, 47, 13, 76, 48],
  [7, 54, 24, 22, 55, 25],
  [22, 45, 15, 13, 46, 16],
  [10, 142, 114, 2, 143, 115],
  [19, 74, 46, 4, 75, 47],
  [28, 50, 22, 6, 51, 23],
  [33, 46, 16, 4, 47, 17],
  [8, 152, 122, 4, 153, 123],
  [22, 73, 45, 3, 74, 46],
  [8, 53, 23, 26, 54, 24],
  [12, 45, 15, 28, 46, 16],
  [3, 147, 117, 10, 148, 118],
  [3, 73, 45, 23, 74, 46],
  [4, 54, 24, 31, 55, 25],
  [11, 45, 15, 31, 46, 16],
  [7, 146, 116, 7, 147, 117],
  [21, 73, 45, 7, 74, 46],
  [1, 53, 23, 37, 54, 24],
  [19, 45, 15, 26, 46, 16],
  [5, 145, 115, 10, 146, 116],
  [19, 75, 47, 10, 76, 48],
  [15, 54, 24, 25, 55, 25],
  [23, 45, 15, 25, 46, 16],
  [13, 145, 115, 3, 146, 116],
  [2, 74, 46, 29, 75, 47],
  [42, 54, 24, 1, 55, 25],
  [23, 45, 15, 28, 46, 16],
  [17, 145, 115],
  [10, 74, 46, 23, 75, 47],
  [10, 54, 24, 35, 55, 25],
  [19, 45, 15, 35, 46, 16],
  [17, 145, 115, 1, 146, 116],
  [14, 74, 46, 21, 75, 47],
  [29, 54, 24, 19, 55, 25],
  [11, 45, 15, 46, 46, 16],
  [13, 145, 115, 6, 146, 116],
  [14, 74, 46, 23, 75, 47],
  [44, 54, 24, 7, 55, 25],
  [59, 46, 16, 1, 47, 17],
  [12, 151, 121, 7, 152, 122],
  [12, 75, 47, 26, 76, 48],
  [39, 54, 24, 14, 55, 25],
  [22, 45, 15, 41, 46, 16],
  [6, 151, 121, 14, 152, 122],
  [6, 75, 47, 34, 76, 48],
  [46, 54, 24, 10, 55, 25],
  [2, 45, 15, 64, 46, 16],
  [17, 152, 122, 4, 153, 123],
  [29, 74, 46, 14, 75, 47],
  [49, 54, 24, 10, 55, 25],
  [24, 45, 15, 46, 46, 16],
  [4, 152, 122, 18, 153, 123],
  [13, 74, 46, 32, 75, 47],
  [48, 54, 24, 14, 55, 25],
  [42, 45, 15, 32, 46, 16],
  [20, 147, 117, 4, 148, 118],
  [40, 75, 47, 7, 76, 48],
  [43, 54, 24, 22, 55, 25],
  [10, 45, 15, 67, 46, 16],
  [19, 148, 118, 6, 149, 119],
  [18, 75, 47, 31, 76, 48],
  [34, 54, 24, 34, 55, 25],
  [20, 45, 15, 61, 46, 16]
];
QRRSBlock.getRSBlocks = function(typeNumber, errorCorrectLevel) {
  var rsBlock = QRRSBlock.getRsBlockTable(typeNumber, errorCorrectLevel);
  if (rsBlock == undefined) {
    throw new Error(
      "bad rs block @ typeNumber:" +
        typeNumber +
        "/errorCorrectLevel:" +
        errorCorrectLevel
    );
  }
  var length = rsBlock.length / 3;
  var list = [];
  for (var i = 0; i < length; i++) {
    var count = rsBlock[i * 3 + 0];
    var totalCount = rsBlock[i * 3 + 1];
    var dataCount = rsBlock[i * 3 + 2];
    for (var j = 0; j < count; j++) {
      list.push(new QRRSBlock(totalCount, dataCount));
    }
  }
  return list;
};
QRRSBlock.getRsBlockTable = function(typeNumber, errorCorrectLevel) {
  switch (errorCorrectLevel) {
    case QRErrorCorrectLevel.L:
      return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 0];
    case QRErrorCorrectLevel.M:
      return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 1];
    case QRErrorCorrectLevel.Q:
      return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 2];
    case QRErrorCorrectLevel.H:
      return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 3];
    default:
      return undefined;
  }
};

function QRBitBuffer() {
  this.buffer = [];
  this.length = 0;
}

QRBitBuffer.prototype = {
  get: function(index) {
    var bufIndex = Math.floor(index / 8);
    return ((this.buffer[bufIndex] >>> (7 - (index % 8))) & 1) == 1;
  },
  put: function(num, length) {
    for (var i = 0; i < length; i++) {
      this.putBit(((num >>> (length - i - 1)) & 1) == 1);
    }
  },
  getLengthInBits: function() {
    return this.length;
  },
  putBit: function(bit) {
    var bufIndex = Math.floor(this.length / 8);
    if (this.buffer.length <= bufIndex) {
      this.buffer.push(0);
    }
    if (bit) {
      this.buffer[bufIndex] |= 0x80 >>> this.length % 8;
    }
    this.length++;
  }
};
var QRCodeLimitLength = [
  [17, 14, 11, 7],
  [32, 26, 20, 14],
  [53, 42, 32, 24],
  [78, 62, 46, 34],
  [106, 84, 60, 44],
  [134, 106, 74, 58],
  [154, 122, 86, 64],
  [192, 152, 108, 84],
  [230, 180, 130, 98],
  [271, 213, 151, 119],
  [321, 251, 177, 137],
  [367, 287, 203, 155],
  [425, 331, 241, 177],
  [458, 362, 258, 194],
  [520, 412, 292, 220],
  [586, 450, 322, 250],
  [644, 504, 364, 280],
  [718, 560, 394, 310],
  [792, 624, 442, 338],
  [858, 666, 482, 382],
  [929, 711, 509, 403],
  [1003, 779, 565, 439],
  [1091, 857, 611, 461],
  [1171, 911, 661, 511],
  [1273, 997, 715, 535],
  [1367, 1059, 751, 593],
  [1465, 1125, 805, 625],
  [1528, 1190, 868, 658],
  [1628, 1264, 908, 698],
  [1732, 1370, 982, 742],
  [1840, 1452, 1030, 790],
  [1952, 1538, 1112, 842],
  [2068, 1628, 1168, 898],
  [2188, 1722, 1228, 958],
  [2303, 1809, 1283, 983],
  [2431, 1911, 1351, 1051],
  [2563, 1989, 1423, 1093],
  [2699, 2099, 1499, 1139],
  [2809, 2213, 1579, 1219],
  [2953, 2331, 1663, 1273]
];

// END OF QR CODE CORE LIBRARY DEFINITION

var Drawing = (function() {
  // Drawing in Canvas
  function _onMakeImage() {
    this._elImage.src = this._elCanvas.toDataURL("image/png");
    this._elImage.style.display = "block";
    this._elCanvas.style.display = "none";
  }

  function _safeSetDataURI(fSuccess, fFail) {
    var self = this;
    self._fFail = fFail;
    self._fSuccess = fSuccess;

    // Check it just once
    if (self._bSupportDataURI === null) {
      var el = document.createElement("img");
      var fOnError = function() {
        self._bSupportDataURI = false;

        if (self._fFail) {
          self._fFail.call(self);
        }
      };
      var fOnSuccess = function() {
        self._bSupportDataURI = true;

        if (self._fSuccess) {
          self._fSuccess.call(self);
        }
      };

      el.onabort = fOnError;
      el.onerror = fOnError;
      el.onload = fOnSuccess;
      el.src =
        "data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg=="; // the Image contains 1px data.
      return;
    } else if (self._bSupportDataURI === true && self._fSuccess) {
      self._fSuccess.call(self);
    } else if (self._bSupportDataURI === false && self._fFail) {
      self._fFail.call(self);
    }
  }

  var Drawing = function(htOption) {
    this._bIsPainted = false;

    this._htOption = htOption;
    this._elCanvas = document.createElement("canvas");
    this._elCanvas.width = htOption.size;
    this._elCanvas.height = htOption.size;
    this._oContext = this._elCanvas.getContext("2d");
    this._bIsPainted = false;
    this._elImage = document.createElement("img");
    this._elImage.alt = "Scan me!";
    this._elImage.style.display = "none";
    this._bSupportDataURI = null;
    this._callback = htOption.callback;
    this._bindElement = htOption.bindElement;
  };

  Drawing.prototype.draw = function(oQRCode) {
    var _elImage = this._elImage;
    var _tCanvas = document.createElement("canvas");
    var _oContext = _tCanvas.getContext("2d");
    // var _oContext = this._oContext;
    var _htOption = this._htOption;

    var nCount = oQRCode.getModuleCount();
    var rawSize = _htOption.size;
    var rawMargin = _htOption.margin;

    if (rawMargin < 0 || rawMargin * 2 >= rawSize) {
      rawMargin = 0;
    }

    var margin = Math.ceil(rawMargin);

    var rawViewportSize = rawSize - 2 * rawMargin;

    var whiteMargin = _htOption.whiteMargin;
    var backgroundDimming = _htOption.backgroundDimming;
    var nSize = Math.ceil(rawViewportSize / nCount);
    var viewportSize = nSize * nCount;
    var size = viewportSize + 2 * margin;

    var gifBackground = undefined;
    var gifFrames = undefined;

    _tCanvas.width = size;
    _tCanvas.height = size;

    var dotScale = _htOption.dotScale;
    _elImage.style.display = "none";
    this.clear();

    if (dotScale <= 0 || dotScale > 1) {
      throw new Error("Scale should be in range (0, 1).");
    }

    // Leave room for margin
    _oContext.save();
    _oContext.translate(margin, margin);

    var _bkgCanvas = document.createElement("canvas");
    _bkgCanvas.width = size;
    _bkgCanvas.height = size;
    var _bContext = _bkgCanvas.getContext("2d");

    var _maskCanvas = undefined;
    var _mContext = undefined;

    if (_htOption.gifBackground !== undefined) {
      var gif = new GIF(_htOption.gifBackground);

      if (!gif.raw.hasImages) {
        throw new Error("An invalid gif has been selected as the background.");
      }
      gifBackground = gif;
      gifFrames = gif.decompressFrames(true);
      // console.log(gifFrames);
      if (_htOption.autoColor) {
        var r = 0,
          g = 0,
          b = 0;
        var count = 0;
        for (var i = 0; i < gifFrames[0].colorTable.length; i++) {
          var c = gifFrames[0].colorTable[i];
          if (c[0] > 200 || c[1] > 200 || c[2] > 200) continue;
          if (c[0] === 0 && c[1] === 0 && c[2] === 0) continue;
          count++;
          r += c[0];
          g += c[1];
          b += c[2];
        }

        r = ~~(r / count);
        g = ~~(g / count);
        b = ~~(b / count);
        // console.log("rgb(" + r + ", " + g + ", " + b + ")");
        _htOption.colorDark = "rgb(" + r + ", " + g + ", " + b + ")";
      }
    } else if (_htOption.backgroundImage !== undefined) {
      if (_htOption.autoColor) {
        var avgRGB = getAverageRGB(_htOption.backgroundImage);
        _htOption.colorDark =
          "rgb(" + avgRGB.r + ", " + avgRGB.g + ", " + avgRGB.b + ")";
      }

      if (_htOption.maskedDots) {
        _maskCanvas = document.createElement("canvas");
        _maskCanvas.width = size;
        _maskCanvas.height = size;
        _mContext = _maskCanvas.getContext("2d");
        /*
                     _mContext.drawImage(_htOption.backgroundImage,
                     0, 0, _htOption.backgroundImage.width, _htOption.backgroundImage.height,
                     whiteMargin ? 0 : -margin, whiteMargin ? 0 : -margin, whiteMargin ? viewportSize : size, whiteMargin ? viewportSize : size);
                     */
        _mContext.drawImage(
          _htOption.backgroundImage,
          0,
          0,
          _htOption.backgroundImage.width,
          _htOption.backgroundImage.height,
          0,
          0,
          size,
          size
        );

        _bContext.rect(0, 0, size, size);
        _bContext.fillStyle = "#ffffff";
        _bContext.fill();
      } else {
        /*
                     _bContext.drawImage(_htOption.backgroundImage,
                     0, 0, _htOption.backgroundImage.width, _htOption.backgroundImage.height,
                     whiteMargin ? 0 : -margin, whiteMargin ? 0 : -margin, whiteMargin ? viewportSize : size, whiteMargin ? viewportSize : size);
                     */
        _bContext.drawImage(
          _htOption.backgroundImage,
          0,
          0,
          _htOption.backgroundImage.width,
          _htOption.backgroundImage.height,
          0,
          0,
          size,
          size
        );
        _bContext.rect(0, 0, size, size);
        _bContext.fillStyle = backgroundDimming;
        _bContext.fill();
      }
    } else {
      _bContext.rect(0, 0, size, size);
      _bContext.fillStyle = _htOption.backgroundColor;
      _bContext.fill();
    }

    if (_htOption.binarize) {
      _htOption.colorDark = "#000000";
      _htOption.colorLight = "#FFFFFF";
    }

    var agnPatternCenter = QRUtil.getPatternPosition(oQRCode.typeNumber);
    var xyOffset = (1 - dotScale) * 0.5;
    for (var row = 0; row < nCount; row++) {
      for (var col = 0; col < nCount; col++) {
        var bIsDark = oQRCode.isDark(row, col);

        // var isBlkPosCtr = ((col < 8 && (row < 8 || row >= nCount - 8)) || (col >= nCount - 8 && row < 8) || (col < nCount - 4 && col >= nCount - 4 - 5 && row < nCount - 4 && row >= nCount - 4 - 5));
        var isBlkPosCtr =
          (col < 8 && (row < 8 || row >= nCount - 8)) ||
          (col >= nCount - 8 && row < 8);
        var isBlkPos =
          (col < 7 && (row < 7 || row >= nCount - 7)) ||
          (col >= nCount - 7 && row < 7);
        var bProtected = row === 6 || col === 6 || isBlkPosCtr;

        for (var i = 0; i < agnPatternCenter.length - 1; i++) {
          bProtected =
            bProtected ||
            (row >= agnPatternCenter[i] - 2 &&
              row <= agnPatternCenter[i] + 2 &&
              col >= agnPatternCenter[i] - 2 &&
              col <= agnPatternCenter[i] + 2);
        }

        var nLeft = col * nSize + (bProtected ? 0 : xyOffset * nSize);
        var nTop = row * nSize + (bProtected ? 0 : xyOffset * nSize);
        _oContext.strokeStyle = bIsDark
          ? _htOption.colorDark
          : _htOption.colorLight;
        _oContext.lineWidth = 0.5;
        _oContext.fillStyle = bIsDark
          ? _htOption.colorDark
          : _htOption.colorLight || "rgba(255, 255, 255, 0.6)"; //_htOption.colorLight;
        if (agnPatternCenter.length === 0) {
          // if align pattern list is empty, then it means that we don't need to leave room for the align patterns
          if (!bProtected)
            _fillRectWithMask(
              _oContext,
              nLeft,
              nTop,
              (bProtected ? (isBlkPosCtr ? 1 : 1) : dotScale) * nSize,
              (bProtected ? (isBlkPosCtr ? 1 : 1) : dotScale) * nSize,
              _maskCanvas,
              bIsDark
            );
        } else {
          var inAgnRange =
            col < nCount - 4 &&
            col >= nCount - 4 - 5 &&
            row < nCount - 4 &&
            row >= nCount - 4 - 5;
          if (!bProtected && !inAgnRange)
            _fillRectWithMask(
              _oContext,
              nLeft,
              nTop,
              (bProtected ? (isBlkPosCtr ? 1 : 1) : dotScale) * nSize,
              (bProtected ? (isBlkPosCtr ? 1 : 1) : dotScale) * nSize,
              _maskCanvas,
              bIsDark
            );
        }
      }
    }

    // Draw POSITION protectors
    var protectorStyle = _htOption.colorLight;
    _oContext.fillStyle = protectorStyle;
    _oContext.fillRect(0, 0, 8 * nSize, 8 * nSize);
    _oContext.fillRect(0, (nCount - 8) * nSize, 8 * nSize, 8 * nSize);
    _oContext.fillRect((nCount - 8) * nSize, 0, 8 * nSize, 8 * nSize);
    _oContext.fillRect(8 * nSize, 6 * nSize, (nCount - 8 - 8) * nSize, nSize);
    _oContext.fillRect(6 * nSize, 8 * nSize, nSize, (nCount - 8 - 8) * nSize);

    // Draw ALIGN protectors
    var edgeCenter = agnPatternCenter[agnPatternCenter.length - 1];
    for (var i = 0; i < agnPatternCenter.length; i++) {
      for (var j = 0; j < agnPatternCenter.length; j++) {
        var agnX = agnPatternCenter[j];
        var agnY = agnPatternCenter[i];
        if (agnX === 6 && (agnY === 6 || agnY === edgeCenter)) {
          continue;
        } else if (agnY === 6 && (agnX === 6 || agnX === edgeCenter)) {
          continue;
        } else if (
          agnX !== 6 &&
          agnX !== edgeCenter &&
          agnY !== 6 &&
          agnY !== edgeCenter
        ) {
          _drawAlignProtector(_oContext, agnX, agnY, nSize, nSize);
        } else {
          _drawAlignProtector(_oContext, agnX, agnY, nSize, nSize);
        }
        // console.log("agnX=" + agnX + ", agnY=" + agnX);
      }
    }

    // Draw POSITION patterns
    _oContext.fillStyle = _htOption.colorDark;
    _oContext.fillRect(0, 0, 7 * nSize, nSize);
    _oContext.fillRect((nCount - 7) * nSize, 0, 7 * nSize, nSize);
    _oContext.fillRect(0, 6 * nSize, 7 * nSize, nSize);
    _oContext.fillRect((nCount - 7) * nSize, 6 * nSize, 7 * nSize, nSize);
    _oContext.fillRect(0, (nCount - 7) * nSize, 7 * nSize, nSize);
    _oContext.fillRect(0, (nCount - 7 + 6) * nSize, 7 * nSize, nSize);
    _oContext.fillRect(0, 0, nSize, 7 * nSize);
    _oContext.fillRect(6 * nSize, 0, nSize, 7 * nSize);
    _oContext.fillRect((nCount - 7) * nSize, 0, nSize, 7 * nSize);
    _oContext.fillRect((nCount - 7 + 6) * nSize, 0, nSize, 7 * nSize);
    _oContext.fillRect(0, (nCount - 7) * nSize, nSize, 7 * nSize);
    _oContext.fillRect(6 * nSize, (nCount - 7) * nSize, nSize, 7 * nSize);

    _oContext.fillRect(2 * nSize, 2 * nSize, 3 * nSize, 3 * nSize);
    _oContext.fillRect(
      (nCount - 7 + 2) * nSize,
      2 * nSize,
      3 * nSize,
      3 * nSize
    );
    _oContext.fillRect(
      2 * nSize,
      (nCount - 7 + 2) * nSize,
      3 * nSize,
      3 * nSize
    );

    for (var i = 0; i < nCount - 8; i += 2) {
      _oContext.fillRect((8 + i) * nSize, 6 * nSize, nSize, nSize);
      _oContext.fillRect(6 * nSize, (8 + i) * nSize, nSize, nSize);
    }
    for (var i = 0; i < agnPatternCenter.length; i++) {
      for (var j = 0; j < agnPatternCenter.length; j++) {
        var agnX = agnPatternCenter[j];
        var agnY = agnPatternCenter[i];
        if (agnX === 6 && (agnY === 6 || agnY === edgeCenter)) {
          continue;
        } else if (agnY === 6 && (agnX === 6 || agnX === edgeCenter)) {
          continue;
        } else if (
          agnX !== 6 &&
          agnX !== edgeCenter &&
          agnY !== 6 &&
          agnY !== edgeCenter
        ) {
          _oContext.fillStyle = _htOption.colorLight;
          _drawAlign(_oContext, agnX, agnY, nSize, nSize);
        } else {
          _oContext.fillStyle = _htOption.colorDark;
          _drawAlign(_oContext, agnX, agnY, nSize, nSize);
        }
      }
    }

    // Fill the margin
    if (whiteMargin) {
      _oContext.fillStyle = _htOption.backgroundColor;
      _oContext.fillRect(-margin, -margin, size, margin);
      _oContext.fillRect(-margin, viewportSize, size, margin);
      _oContext.fillRect(viewportSize, -margin, margin, size);
      _oContext.fillRect(-margin, -margin, margin, size);
    }

    if (_htOption.logoImage !== undefined) {
      var logoScale = _htOption.logoScale;
      var logoMargin = _htOption.logoMargin;
      var logoCornerRadius = _htOption.logoCornerRadius;
      if (logoScale <= 0 || logoScale >= 1.0) {
        logoScale = 0.2;
      }
      if (logoMargin < 0) {
        logoMargin = 0;
      }
      if (logoCornerRadius < 0) {
        logoCornerRadius = 0;
      }

      _oContext.restore();
      _oContext.translate(margin, margin);
      var logoSize = viewportSize * logoScale;
      var x = 0.5 * (viewportSize - logoSize);
      var y = x;

      _oContext.fillStyle = _htOption.logoBackgroundColor;
      _oContext.save();
      _prepareRoundedCornerClip(
        _oContext,
        x - logoMargin,
        y - logoMargin,
        logoSize + 2 * logoMargin,
        logoSize + 2 * logoMargin,
        logoCornerRadius
      );
      _oContext.clip();
      _oContext.fill();
      _oContext.restore();

      _oContext.save();
      _prepareRoundedCornerClip(
        _oContext,
        x,
        y,
        logoSize,
        logoSize,
        logoCornerRadius
      );
      _oContext.clip();
      _oContext.drawImage(_htOption.logoImage, x, y, logoSize, logoSize);
      _oContext.restore();
    }

    if (gifBackground === undefined) {
      // Swap and merge the foreground and the background
      _bContext.drawImage(_tCanvas, 0, 0, size, size);
      _oContext.drawImage(_bkgCanvas, -margin, -margin, size, size);

      // Binarize the final image
      if (_htOption.binarize) {
        var pixels = _oContext.getImageData(0, 0, size, size);
        var threshold = 128;
        if (
          parseInt(_htOption.binarizeThreshold) > 0 &&
          parseInt(_htOption.binarizeThreshold) < 255
        ) {
          threshold = parseInt(_htOption.binarizeThreshold);
        }
        for (var i = 0; i < pixels.data.length; i += 4) {
          // rgb in [0, 255]
          var R = pixels.data[i];
          var G = pixels.data[i + 1];
          var B = pixels.data[i + 2];
          var sum = _greyscale(R, G, B);
          if (sum > threshold) {
            pixels.data[i] = 255;
            pixels.data[i + 1] = 255;
            pixels.data[i + 2] = 255;
          } else {
            pixels.data[i] = 0;
            pixels.data[i + 1] = 0;
            pixels.data[i + 2] = 0;
          }
        }
        _oContext.putImageData(pixels, 0, 0);
      }

      // Scale the final image
      var _fCanvas = document.createElement("canvas");
      var _fContext = _fCanvas.getContext("2d");
      _fCanvas.width = rawSize;
      _fCanvas.height = rawSize;
      _fContext.drawImage(_tCanvas, 0, 0, rawSize, rawSize);
      this._elCanvas = _fCanvas;

      // Painting work completed
      this._bIsPainted = true;
      if (this._callback !== undefined) {
        this._callback(this._elCanvas.toDataURL());
      }
      if (this._bindElement !== undefined) {
        try {
          var el = document.getElementById(this._bindElement);
          if (el.nodeName === "IMG") {
            el.src = this._elCanvas.toDataURL();
          } else {
            var elStyle = el.style;
            elStyle["background-image"] =
              "url(" + this._elCanvas.toDataURL() + ")";
            elStyle["background-size"] = "contain";
            elStyle["background-repeat"] = "no-repeat";
          }
        } catch (e) {
          console.error(e);
        }
      }
    } else {
      var gifOutput;

      // Reuse in order to apply the patch
      var rawBkg;
      var hRawBkg;

      var patchCanvas = document.createElement("canvas");
      var hPatchCanvas = patchCanvas.getContext("2d");
      var patchData;

      gifFrames.forEach(function(frame) {
        // console.log(frame);
        if (gifOutput === undefined) {
          gifOutput = new GIFE({
            workers: 4,
            quality: 10,
            width: rawSize,
            height: rawSize
          });
        }

        if (rawBkg === undefined) {
          rawBkg = document.createElement("canvas");
          hRawBkg = rawBkg.getContext("2d");
          rawBkg.width = frame.dims.width;
          rawBkg.height = frame.dims.height;
          hRawBkg.rect(0, 0, rawBkg.width, rawBkg.height);
          hRawBkg.fillStyle = "#ffffff";
          hRawBkg.fill();
          // console.log(rawBkg);
        }

        if (
          !patchData ||
          frame.dims.width !== patchCanvas.width ||
          frame.dims.height !== patchCanvas.height
        ) {
          patchCanvas.width = frame.dims.width;
          patchCanvas.height = frame.dims.height;
          patchData = hPatchCanvas.createImageData(
            frame.dims.width,
            frame.dims.height
          );
        }

        patchData.data.set(frame.patch);
        hPatchCanvas.putImageData(patchData, 0, 0);

        hRawBkg.drawImage(patchCanvas, frame.dims.left, frame.dims.top);

        var stdCanvas = document.createElement("canvas");
        stdCanvas.width = size;
        stdCanvas.height = size;
        var hStdCanvas = stdCanvas.getContext("2d");

        hStdCanvas.drawImage(rawBkg, 0, 0, size, size);
        hStdCanvas.drawImage(_tCanvas, 0, 0, size, size);

        // Scale the final image
        var _fCanvas = document.createElement("canvas");
        var _fContext = _fCanvas.getContext("2d");
        _fCanvas.width = rawSize;
        _fCanvas.height = rawSize;
        _fContext.drawImage(stdCanvas, 0, 0, rawSize, rawSize);
        // console.log(_fContext);
        gifOutput.addFrame(_fContext, { copy: true, delay: frame.delay });
      });

      if (gifOutput === undefined) {
        throw new Error("No frames.");
      }
      var ref = this;
      gifOutput.on("finished", function(blob) {
        // Painting work completed
        var r = new FileReader();
        r.onload = function(e) {
          var data = e.target.result;
          ref._bIsPainted = true;
          if (ref._callback !== undefined) {
            ref._callback(data);
          }
          if (ref._bindElement !== undefined) {
            try {
              var el = document.getElementById(ref._bindElement);
              if (el.nodeName === "IMG") {
                el.src = data;
              } else {
                var elStyle = el.style;
                elStyle["background-image"] = "url(" + data + ")";
                elStyle["background-size"] = "contain";
                elStyle["background-repeat"] = "no-repeat";
              }
            } catch (e) {
              console.error(e);
            }
          }
        };
        r.readAsDataURL(blob);
      });

      gifOutput.render();
    }
  };

  Drawing.prototype.makeImage = function() {
    if (this._bIsPainted) {
      _safeSetDataURI.call(this, _onMakeImage);
    }
  };

  Drawing.prototype.isPainted = function() {
    return this._bIsPainted;
  };

  Drawing.prototype.clear = function() {
    this._oContext.clearRect(0, 0, this._elCanvas.width, this._elCanvas.height);
    this._bIsPainted = false;
  };

  Drawing.prototype.round = function(nNumber) {
    if (!nNumber) {
      return nNumber;
    }

    return Math.floor(nNumber * 1000) / 1000;
  };

  return Drawing;
})();

// Utilities and useful helpers

function _getUTF8Length(sText) {
  var replacedText = encodeURI(sText)
    .toString()
    .replace(/\%[0-9a-fA-F]{2}/g, "a");
  return replacedText.length + (replacedText.length != sText ? 3 : 0);
}

function _prepareRoundedCornerClip(ctx, x, y, w, h, r) {
  ctx.beginPath();
  ctx.moveTo(x, y);
  ctx.arcTo(x + w, y, x + w, y + h, r);
  ctx.arcTo(x + w, y + h, x, y + h, r);
  ctx.arcTo(x, y + h, x, y, r);
  ctx.arcTo(x, y, x + w, y, r);
  ctx.closePath();
}

function _setPixel(imageData, p, r, g, b, a) {
  var index = p * 4;
  imageData.data[index + 0] = r;
  imageData.data[index + 1] = g;
  imageData.data[index + 2] = b;
  imageData.data[index + 3] = a;
}

function _greyscale(r, g, b) {
  return 0.3 * r + 0.59 * b + 0.11 * b;
}

function _fillRectWithMask(canvas, x, y, w, h, maskSrc, bDark) {
  //console.log("maskSrc=" + maskSrc);
  if (maskSrc === undefined) {
    canvas.fillRect(x, y, w, h);
  } else {
    canvas.drawImage(maskSrc, x, y, w, h, x, y, w, h);
    var fill_ = canvas.fillStyle;
    canvas.fillStyle = bDark ? "rgba(0, 0, 0, .5)" : "rgba(255, 255, 255, .7)";
    canvas.fillRect(x, y, w, h);
    canvas.fillStyle = fill_;
  }
}

function _drawAlignProtector(context, centerX, centerY, nWidth, nHeight) {
  context.clearRect(
    (centerX - 2) * nWidth,
    (centerY - 2) * nHeight,
    5 * nWidth,
    5 * nHeight
  );
  context.fillRect(
    (centerX - 2) * nWidth,
    (centerY - 2) * nHeight,
    5 * nWidth,
    5 * nHeight
  );
}

function _drawAlign(context, centerX, centerY, nWidth, nHeight) {
  context.fillRect(
    (centerX - 2) * nWidth,
    (centerY - 2) * nHeight,
    nWidth,
    4 * nHeight
  );
  context.fillRect(
    (centerX + 2) * nWidth,
    (centerY - 2 + 1) * nHeight,
    nWidth,
    4 * nHeight
  );
  context.fillRect(
    (centerX - 2 + 1) * nWidth,
    (centerY - 2) * nHeight,
    4 * nWidth,
    nHeight
  );
  context.fillRect(
    (centerX - 2) * nWidth,
    (centerY + 2) * nHeight,
    4 * nWidth,
    nHeight
  );
  context.fillRect(centerX * nWidth, centerY * nHeight, nWidth, nHeight);
}

AwesomeQRCode = function() {};

AwesomeQRCode.prototype.create = function(vOption) {
  this._htOption = {
    size: 800,
    margin: 20,
    typeNumber: 4,
    colorDark: "#000000",
    colorLight: "rgba(255, 255, 255, 0.6)",
    logoBackgroundColor: "#ffffff",
    correctLevel: QRErrorCorrectLevel.M,
    backgroundImage: undefined,
    backgroundDimming: "rgba(0,0,0,0)",
    logoImage: undefined,
    logoScale: 0.2,
    logoMargin: 6,
    logoCornerRadius: 8,
    whiteMargin: true,
    dotScale: 0.35,
    maskedDots: false,
    autoColor: true,
    binarize: false,
    binarizeThreshold: 128,
    gifBackground: undefined,
    callback: undefined,
    bindElement: undefined,
    backgroundColor: "#ffffff"
  };

  if (typeof vOption === "string") {
    vOption = {
      text: vOption
    };
  }

  if (vOption) {
    for (var i in vOption) {
      this._htOption[i] = vOption[i];
    }
  }

  this._oQRCode = null;
  this._oDrawing = new Drawing(this._htOption);

  if (this._htOption.text) {
    this.makeCode(this._htOption.text);
  }
};

function _getTypeNumber(sText, nCorrectLevel) {
  var nType = 1;
  var length = _getUTF8Length(sText);

  for (var i = 0, len = QRCodeLimitLength.length; i <= len; i++) {
    var nLimit = 0;

    switch (nCorrectLevel) {
      case QRErrorCorrectLevel.L:
        nLimit = QRCodeLimitLength[i][0];
        break;
      case QRErrorCorrectLevel.M:
        nLimit = QRCodeLimitLength[i][1];
        break;
      case QRErrorCorrectLevel.Q:
        nLimit = QRCodeLimitLength[i][2];
        break;
      case QRErrorCorrectLevel.H:
        nLimit = QRCodeLimitLength[i][3];
        break;
    }

    if (length <= nLimit) {
      break;
    } else {
      nType++;
    }
  }

  if (nType > QRCodeLimitLength.length) {
    throw new Error("Too long data");
  }

  return nType;
}

AwesomeQRCode.prototype.makeCode = function(sText) {
  //this._oQRCode = new QRCodeModel(_getTypeNumber(sText, this._htOption.correctLevel), this._htOption.correctLevel);
  this._oQRCode = new QRCodeModel(-1, this._htOption.correctLevel);
  this._oQRCode.addData(sText);
  this._oQRCode.make();
  this._oDrawing.draw(this._oQRCode);
  this.makeImage();
};

AwesomeQRCode.prototype.makeImage = function() {
  if (typeof this._oDrawing.makeImage == "function") {
    this._oDrawing.makeImage();
  }
};

AwesomeQRCode.prototype.clear = function() {
  this._oDrawing.clear();
};

AwesomeQRCode.CorrectLevel = QRErrorCorrectLevel;

function getAverageRGB(imgEl) {
  var blockSize = 5,
    defaultRGB = {
      r: 0,
      g: 0,
      b: 0
    },
    canvas = document.createElement("canvas"),
    context = canvas.getContext && canvas.getContext("2d"),
    data,
    width,
    height,
    i = -4,
    length,
    rgb = {
      r: 0,
      g: 0,
      b: 0
    },
    count = 0;

  if (!context) {
    return defaultRGB;
  }

  height = canvas.height =
    imgEl.naturalHeight || imgEl.offsetHeight || imgEl.height;
  width = canvas.width = imgEl.naturalWidth || imgEl.offsetWidth || imgEl.width;

  context.drawImage(imgEl, 0, 0);

  try {
    data = context.getImageData(0, 0, width, height);
  } catch (e) {
    return defaultRGB;
  }

  length = data.data.length;

  while ((i += blockSize * 4) < length) {
    if (data.data[i] > 200 || data.data[i + 1] > 200 || data.data[i + 2] > 200)
      continue;
    ++count;
    rgb.r += data.data[i];
    rgb.g += data.data[i + 1];
    rgb.b += data.data[i + 2];
  }

  rgb.r = ~~(rgb.r / count);
  rgb.g = ~~(rgb.g / count);
  rgb.b = ~~(rgb.b / count);

  return rgb;
}
// module.exports=AwesomeQRCode
export default AwesomeQRCode;