assets_js_libraries.js

// https://github.com/jeromeetienne/jquery-qrcode
(function(r){r.fn.qrcode=function(h){var s;function u(a){this.mode=s;this.data=a}function o(a,c){this.typeNumber=a;this.errorCorrectLevel=c;this.modules=null;this.moduleCount=0;this.dataCache=null;this.dataList=[]}function q(a,c){if(void 0==a.length)throw Error(a.length+"/"+c);for(var d=0;d<a.length&&0==a[d];)d++;this.num=Array(a.length-d+c);for(var b=0;b<a.length-d;b++)this.num[b]=a[b+d]}function p(a,c){this.totalCount=a;this.dataCount=c}function t(){this.buffer=[];this.length=0}u.prototype={getLength:function(){return this.data.length},
write:function(a){for(var c=0;c<this.data.length;c++)a.put(this.data.charCodeAt(c),8)}};o.prototype={addData:function(a){this.dataList.push(new u(a));this.dataCache=null},isDark:function(a,c){if(0>a||this.moduleCount<=a||0>c||this.moduleCount<=c)throw Error(a+","+c);return this.modules[a][c]},getModuleCount:function(){return this.moduleCount},make:function(){if(1>this.typeNumber){for(var a=1,a=1;40>a;a++){for(var c=p.getRSBlocks(a,this.errorCorrectLevel),d=new t,b=0,e=0;e<c.length;e++)b+=c[e].dataCount;
for(e=0;e<this.dataList.length;e++)c=this.dataList[e],d.put(c.mode,4),d.put(c.getLength(),j.getLengthInBits(c.mode,a)),c.write(d);if(d.getLengthInBits()<=8*b)break}this.typeNumber=a}this.makeImpl(!1,this.getBestMaskPattern())},makeImpl:function(a,c){this.moduleCount=4*this.typeNumber+17;this.modules=Array(this.moduleCount);for(var d=0;d<this.moduleCount;d++){this.modules[d]=Array(this.moduleCount);for(var b=0;b<this.moduleCount;b++)this.modules[d][b]=null}this.setupPositionProbePattern(0,0);this.setupPositionProbePattern(this.moduleCount-
7,0);this.setupPositionProbePattern(0,this.moduleCount-7);this.setupPositionAdjustPattern();this.setupTimingPattern();this.setupTypeInfo(a,c);7<=this.typeNumber&&this.setupTypeNumber(a);null==this.dataCache&&(this.dataCache=o.createData(this.typeNumber,this.errorCorrectLevel,this.dataList));this.mapData(this.dataCache,c)},setupPositionProbePattern:function(a,c){for(var d=-1;7>=d;d++)if(!(-1>=a+d||this.moduleCount<=a+d))for(var b=-1;7>=b;b++)-1>=c+b||this.moduleCount<=c+b||(this.modules[a+d][c+b]=
0<=d&&6>=d&&(0==b||6==b)||0<=b&&6>=b&&(0==d||6==d)||2<=d&&4>=d&&2<=b&&4>=b?!0:!1)},getBestMaskPattern:function(){for(var a=0,c=0,d=0;8>d;d++){this.makeImpl(!0,d);var b=j.getLostPoint(this);if(0==d||a>b)a=b,c=d}return c},setupTimingPattern:function(){for(var a=8;a<this.moduleCount-8;a++)null==this.modules[a][6]&&(this.modules[a][6]=0==a%2);for(a=8;a<this.moduleCount-8;a++)null==this.modules[6][a]&&(this.modules[6][a]=0==a%2)},setupPositionAdjustPattern:function(){for(var a=j.getPatternPosition(this.typeNumber),c=0;c<a.length;c++)for(var d=0;d<a.length;d++){var b=a[c],e=a[d];if(null==this.modules[b][e])for(var f=-2;2>=f;f++)for(var i=-2;2>=i;i++)this.modules[b+f][e+i]=-2==f||2==f||-2==i||2==i||0==f&&0==i?!0:!1}},setupTypeNumber:function(a){for(var c=
j.getBCHTypeNumber(this.typeNumber),d=0;18>d;d++){var b=!a&&1==(c>>d&1);this.modules[Math.floor(d/3)][d%3+this.moduleCount-8-3]=b}for(d=0;18>d;d++)b=!a&&1==(c>>d&1),this.modules[d%3+this.moduleCount-8-3][Math.floor(d/3)]=b},setupTypeInfo:function(a,c){for(var d=j.getBCHTypeInfo(this.errorCorrectLevel<<3|c),b=0;15>b;b++){var e=!a&&1==(d>>b&1);6>b?this.modules[b][8]=e:8>b?this.modules[b+1][8]=e:this.modules[this.moduleCount-15+b][8]=e}for(b=0;15>b;b++)e=!a&&1==(d>>b&1),8>b?this.modules[8][this.moduleCount-
b-1]=e:9>b?this.modules[8][15-b-1+1]=e:this.modules[8][15-b-1]=e;this.modules[this.moduleCount-8][8]=!a},mapData:function(a,c){for(var d=-1,b=this.moduleCount-1,e=7,f=0,i=this.moduleCount-1;0<i;i-=2)for(6==i&&i--;;){for(var g=0;2>g;g++)if(null==this.modules[b][i-g]){var n=!1;f<a.length&&(n=1==(a[f]>>>e&1));j.getMask(c,b,i-g)&&(n=!n);this.modules[b][i-g]=n;e--; -1==e&&(f++,e=7)}b+=d;if(0>b||this.moduleCount<=b){b-=d;d=-d;break}}}};o.PAD0=236;o.PAD1=17;o.createData=function(a,c,d){for(var c=p.getRSBlocks(a,
c),b=new t,e=0;e<d.length;e++){var f=d[e];b.put(f.mode,4);b.put(f.getLength(),j.getLengthInBits(f.mode,a));f.write(b)}for(e=a=0;e<c.length;e++)a+=c[e].dataCount;if(b.getLengthInBits()>8*a)throw Error("code length overflow. ("+b.getLengthInBits()+">"+8*a+")");for(b.getLengthInBits()+4<=8*a&&b.put(0,4);0!=b.getLengthInBits()%8;)b.putBit(!1);for(;!(b.getLengthInBits()>=8*a);){b.put(o.PAD0,8);if(b.getLengthInBits()>=8*a)break;b.put(o.PAD1,8)}return o.createBytes(b,c)};o.createBytes=function(a,c){for(var d=
0,b=0,e=0,f=Array(c.length),i=Array(c.length),g=0;g<c.length;g++){var n=c[g].dataCount,h=c[g].totalCount-n,b=Math.max(b,n),e=Math.max(e,h);f[g]=Array(n);for(var k=0;k<f[g].length;k++)f[g][k]=255&a.buffer[k+d];d+=n;k=j.getErrorCorrectPolynomial(h);n=(new q(f[g],k.getLength()-1)).mod(k);i[g]=Array(k.getLength()-1);for(k=0;k<i[g].length;k++)h=k+n.getLength()-i[g].length,i[g][k]=0<=h?n.get(h):0}for(k=g=0;k<c.length;k++)g+=c[k].totalCount;d=Array(g);for(k=n=0;k<b;k++)for(g=0;g<c.length;g++)k<f[g].length&&
(d[n++]=f[g][k]);for(k=0;k<e;k++)for(g=0;g<c.length;g++)k<i[g].length&&(d[n++]=i[g][k]);return d};s=4;for(var j={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]],G15:1335,G18:7973,G15_MASK:21522,getBCHTypeInfo:function(a){for(var c=a<<10;0<=j.getBCHDigit(c)-j.getBCHDigit(j.G15);)c^=j.G15<<j.getBCHDigit(c)-j.getBCHDigit(j.G15);return(a<<10|c)^j.G15_MASK},getBCHTypeNumber:function(a){for(var c=a<<12;0<=j.getBCHDigit(c)-
j.getBCHDigit(j.G18);)c^=j.G18<<j.getBCHDigit(c)-j.getBCHDigit(j.G18);return a<<12|c},getBCHDigit:function(a){for(var c=0;0!=a;)c++,a>>>=1;return c},getPatternPosition:function(a){return j.PATTERN_POSITION_TABLE[a-1]},getMask:function(a,c,d){switch(a){case 0:return 0==(c+d)%2;case 1:return 0==c%2;case 2:return 0==d%3;case 3:return 0==(c+d)%3;case 4:return 0==(Math.floor(c/2)+Math.floor(d/3))%2;case 5:return 0==c*d%2+c*d%3;case 6:return 0==(c*d%2+c*d%3)%2;case 7:return 0==(c*d%3+(c+d)%2)%2;default:throw Error("bad maskPattern:"+
a);}},getErrorCorrectPolynomial:function(a){for(var c=new q([1],0),d=0;d<a;d++)c=c.multiply(new q([1,l.gexp(d)],0));return c},getLengthInBits:function(a,c){if(1<=c&&10>c)switch(a){case 1:return 10;case 2:return 9;case s:return 8;case 8:return 8;default:throw Error("mode:"+a);}else if(27>c)switch(a){case 1:return 12;case 2:return 11;case s:return 16;case 8:return 10;default:throw Error("mode:"+a);}else if(41>c)switch(a){case 1:return 14;case 2:return 13;case s:return 16;case 8:return 12;default:throw Error("mode:"+
a);}else throw Error("type:"+c);},getLostPoint:function(a){for(var c=a.getModuleCount(),d=0,b=0;b<c;b++)for(var e=0;e<c;e++){for(var f=0,i=a.isDark(b,e),g=-1;1>=g;g++)if(!(0>b+g||c<=b+g))for(var h=-1;1>=h;h++)0>e+h||c<=e+h||0==g&&0==h||i==a.isDark(b+g,e+h)&&f++;5<f&&(d+=3+f-5)}for(b=0;b<c-1;b++)for(e=0;e<c-1;e++)if(f=0,a.isDark(b,e)&&f++,a.isDark(b+1,e)&&f++,a.isDark(b,e+1)&&f++,a.isDark(b+1,e+1)&&f++,0==f||4==f)d+=3;for(b=0;b<c;b++)for(e=0;e<c-6;e++)a.isDark(b,e)&&!a.isDark(b,e+1)&&a.isDark(b,e+
2)&&a.isDark(b,e+3)&&a.isDark(b,e+4)&&!a.isDark(b,e+5)&&a.isDark(b,e+6)&&(d+=40);for(e=0;e<c;e++)for(b=0;b<c-6;b++)a.isDark(b,e)&&!a.isDark(b+1,e)&&a.isDark(b+2,e)&&a.isDark(b+3,e)&&a.isDark(b+4,e)&&!a.isDark(b+5,e)&&a.isDark(b+6,e)&&(d+=40);for(e=f=0;e<c;e++)for(b=0;b<c;b++)a.isDark(b,e)&&f++;a=Math.abs(100*f/c/c-50)/5;return d+10*a}},l={glog:function(a){if(1>a)throw Error("glog("+a+")");return l.LOG_TABLE[a]},gexp:function(a){for(;0>a;)a+=255;for(;256<=a;)a-=255;return l.EXP_TABLE[a]},EXP_TABLE:Array(256),
LOG_TABLE:Array(256)},m=0;8>m;m++)l.EXP_TABLE[m]=1<<m;for(m=8;256>m;m++)l.EXP_TABLE[m]=l.EXP_TABLE[m-4]^l.EXP_TABLE[m-5]^l.EXP_TABLE[m-6]^l.EXP_TABLE[m-8];for(m=0;255>m;m++)l.LOG_TABLE[l.EXP_TABLE[m]]=m;q.prototype={get:function(a){return this.num[a]},getLength:function(){return this.num.length},multiply:function(a){for(var c=Array(this.getLength()+a.getLength()-1),d=0;d<this.getLength();d++)for(var b=0;b<a.getLength();b++)c[d+b]^=l.gexp(l.glog(this.get(d))+l.glog(a.get(b)));return new q(c,0)},mod:function(a){if(0>
this.getLength()-a.getLength())return this;for(var c=l.glog(this.get(0))-l.glog(a.get(0)),d=Array(this.getLength()),b=0;b<this.getLength();b++)d[b]=this.get(b);for(b=0;b<a.getLength();b++)d[b]^=l.gexp(l.glog(a.get(b))+c);return(new q(d,0)).mod(a)}};p.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]];p.getRSBlocks=function(a,c){var d=p.getRsBlockTable(a,c);if(void 0==d)throw Error("bad rs block @ typeNumber:"+a+"/errorCorrectLevel:"+c);for(var b=d.length/3,e=[],f=0;f<b;f++)for(var h=d[3*f+0],g=d[3*f+1],j=d[3*f+2],l=0;l<h;l++)e.push(new p(g,j));return e};p.getRsBlockTable=function(a,c){switch(c){case 1:return p.RS_BLOCK_TABLE[4*(a-1)+0];case 0:return p.RS_BLOCK_TABLE[4*(a-1)+1];case 3:return p.RS_BLOCK_TABLE[4*
(a-1)+2];case 2:return p.RS_BLOCK_TABLE[4*(a-1)+3]}};t.prototype={get:function(a){return 1==(this.buffer[Math.floor(a/8)]>>>7-a%8&1)},put:function(a,c){for(var d=0;d<c;d++)this.putBit(1==(a>>>c-d-1&1))},getLengthInBits:function(){return this.length},putBit:function(a){var c=Math.floor(this.length/8);this.buffer.length<=c&&this.buffer.push(0);a&&(this.buffer[c]|=128>>>this.length%8);this.length++}};"string"===typeof h&&(h={text:h});h=r.extend({},{width:256,height:256,typeNumber:-1,
correctLevel:2,background:"#ffffff",foreground:"#000000"},h);return this.each(function(){var a=new o(h.typeNumber,h.correctLevel);a.addData(h.text);a.make();var pad=8,c=document.createElement("canvas");c.width=h.width+pad*2;c.height=h.height+pad*2;for(var d=c.getContext("2d"),b=h.width/a.getModuleCount(),e=h.height/a.getModuleCount(),f=(d.fillStyle=h.background,d.fillRect(0,0,c.width,c.height),0);f<a.getModuleCount();f++)for(var i=0;i<a.getModuleCount();i++){d.fillStyle=a.isDark(f,i)?h.foreground:h.background;var g=Math.ceil((i+1)*b)-Math.floor(i*b),
j=Math.ceil((f+1)*b)-Math.floor(f*b);d.fillRect(Math.round(i*b)+pad,Math.round(f*e)+pad,g,j)}jQuery(c).appendTo(this)})}})(jQuery);

// QR Scanner Class Definition
class QrScanner{static hasCamera(){return navigator.mediaDevices?navigator.mediaDevices.enumerateDevices().then((e=>e.some((e=>"videoinput"===e.kind)))).catch((()=>!1)):Promise.resolve(!1)}constructor(e,t,i=this._onDecodeError,n=this._calculateScanRegion,a="environment"){this.$video=e,this.$canvas=document.createElement("canvas"),this._onDecode=t,this._legacyCanvasSize=QrScanner.DEFAULT_CANVAS_SIZE,this._preferredFacingMode=a,this._active=!1,this._paused=!1,this._flashOn=!1,"number"==typeof i?(this._legacyCanvasSize=i,console.warn("You're using a deprecated version of the QrScanner constructor which will be removed in the future")):this._onDecodeError=i,"number"==typeof n?(this._legacyCanvasSize=n,console.warn("You're using a deprecated version of the QrScanner constructor which will be removed in the future")):this._calculateScanRegion=n,this._scanRegion=this._calculateScanRegion(e),this._onPlay=this._onPlay.bind(this),this._onLoadedMetaData=this._onLoadedMetaData.bind(this),this._onVisibilityChange=this._onVisibilityChange.bind(this),this.$video.playsInline=!0,this.$video.muted=!0,this.$video.disablePictureInPicture=!0,this.$video.addEventListener("play",this._onPlay),this.$video.addEventListener("loadedmetadata",this._onLoadedMetaData),document.addEventListener("visibilitychange",this._onVisibilityChange),this._qrEnginePromise=QrScanner.createQrEngine()}hasFlash(){if(!("ImageCapture"in window))return Promise.resolve(!1);const e=this.$video.srcObject?this.$video.srcObject.getVideoTracks()[0]:null;if(!e)return Promise.reject("Camera not started or not available");return new ImageCapture(e).getPhotoCapabilities().then((e=>e.fillLightMode.includes("flash"))).catch((e=>(console.warn(e),!1)))}isFlashOn(){return this._flashOn}toggleFlash(){return this._setFlash(!this._flashOn)}turnFlashOff(){return this._setFlash(!1)}turnFlashOn(){return this._setFlash(!0)}destroy(){this.$video.removeEventListener("loadedmetadata",this._onLoadedMetaData),this.$video.removeEventListener("play",this._onPlay),document.removeEventListener("visibilitychange",this._onVisibilityChange),this.stop(),QrScanner._postWorkerMessage(this._qrEnginePromise,"close")}start(){if(this._active&&!this._paused)return Promise.resolve();if("https:"!==window.location.protocol&&console.warn("The camera stream is only accessible if the page is transferred via https."),this._active=!0,this._paused=!1,document.hidden)return Promise.resolve();if(clearTimeout(this._offTimeout),this._offTimeout=null,this.$video.srcObject)return this.$video.play(),Promise.resolve();let e=this._preferredFacingMode;return this._getCameraStream(e,!0).catch((()=>(e="environment"===e?"user":"environment",this._getCameraStream()))).then((t=>{e=this._getFacingMode(t)||e,this.$video.srcObject=t,this.$video.play(),this._setVideoMirror(e)})).catch((e=>{throw this._active=!1,e}))}stop(){this.pause(),this._active=!1}pause(){this._paused=!0,this._active&&(this.$video.pause(),this._offTimeout||(this._offTimeout=setTimeout((()=>{const e=this.$video.srcObject?this.$video.srcObject.getTracks():[];for(const t of e)t.stop();this.$video.srcObject=null,this._offTimeout=null}),300)))}static scanImage(e,t=null,i=null,n=null,a=!1,r=!1){const s=i instanceof Worker;let o=Promise.all([i||QrScanner.createQrEngine(),QrScanner._loadImage(e)]).then((([e,r])=>{let o;return i=e,[n,o]=this._drawToCanvas(r,t,n,a),i instanceof Worker?(s||i.postMessage({type:"inversionMode",data:"both"}),new Promise(((e,t)=>{let a,r,s;r=n=>{"qrResult"===n.data.type&&(i.removeEventListener("message",r),i.removeEventListener("error",s),clearTimeout(a),null!==n.data.data?e(n.data.data):t(QrScanner.NO_QR_CODE_FOUND))},s=e=>{i.removeEventListener("message",r),i.removeEventListener("error",s),clearTimeout(a);const n=e?e.message||e:"Unknown Error";t("Scanner error: "+n)},i.addEventListener("message",r),i.addEventListener("error",s),a=setTimeout((()=>s("timeout")),1e4);const c=o.getImageData(0,0,n.width,n.height);i.postMessage({type:"decode",data:c},[c.data.buffer])}))):new Promise(((e,t)=>{const a=setTimeout((()=>t("Scanner error: timeout")),1e4);i.detect(n).then((i=>{i.length?e(i[0].rawValue):t(QrScanner.NO_QR_CODE_FOUND)})).catch((e=>t("Scanner error: "+(e.message||e)))).finally((()=>clearTimeout(a)))}))}));return t&&r&&(o=o.catch((()=>QrScanner.scanImage(e,null,i,n,a)))),o=o.finally((()=>{s||QrScanner._postWorkerMessage(i,"close")})),o}setGrayscaleWeights(e,t,i,n=!0){QrScanner._postWorkerMessage(this._qrEnginePromise,"grayscaleWeights",{red:e,green:t,blue:i,useIntegerApproximation:n})}setInversionMode(e){QrScanner._postWorkerMessage(this._qrEnginePromise,"inversionMode",e)}static createQrEngine(e=QrScanner.WORKER_PATH){return("BarcodeDetector"in window?BarcodeDetector.getSupportedFormats():Promise.resolve([])).then((t=>-1!==t.indexOf("qr_code")?new BarcodeDetector({formats:["qr_code"]}):new Worker(e)))}_onPlay(){this._scanRegion=this._calculateScanRegion(this.$video),this._scanFrame()}_onLoadedMetaData(){this._scanRegion=this._calculateScanRegion(this.$video)}_onVisibilityChange(){document.hidden?this.pause():this._active&&this.start()}_calculateScanRegion(e){const t=Math.min(e.videoWidth,e.videoHeight),i=Math.round(2/3*t);return{x:(e.videoWidth-i)/2,y:(e.videoHeight-i)/2,width:i,height:i,downScaledWidth:this._legacyCanvasSize,downScaledHeight:this._legacyCanvasSize}}_scanFrame(){if(!this._active||this.$video.paused||this.$video.ended)return!1;requestAnimationFrame((()=>{this.$video.readyState<=1?this._scanFrame():this._qrEnginePromise.then((e=>QrScanner.scanImage(this.$video,this._scanRegion,e,this.$canvas))).then(this._onDecode,(e=>{if(!this._active)return;-1!==(e.message||e).indexOf("service unavailable")&&(this._qrEnginePromise=QrScanner.createQrEngine()),this._onDecodeError(e)})).then((()=>this._scanFrame()))}))}_onDecodeError(e){e!==QrScanner.NO_QR_CODE_FOUND&&console.log(e)}_getCameraStream(e,t=!1){const i=[{width:{min:1024}},{width:{min:768}},{}];return e&&(t&&(e={exact:e}),i.forEach((t=>t.facingMode=e))),this._getMatchingCameraStream(i)}_getMatchingCameraStream(e){return navigator.mediaDevices&&0!==e.length?navigator.mediaDevices.getUserMedia({video:e.shift()}).catch((()=>this._getMatchingCameraStream(e))):Promise.reject("Camera not found.")}_setFlash(e){return this.hasFlash().then((t=>t?this.$video.srcObject.getVideoTracks()[0].applyConstraints({advanced:[{torch:e}]}):Promise.reject("No flash available"))).then((()=>this._flashOn=e))}_setVideoMirror(e){const t="user"===e?-1:1;this.$video.style.transform="scaleX("+t+")"}_getFacingMode(e){const t=e.getVideoTracks()[0];return t?/rear|back|environment/i.test(t.label)?"environment":/front|user|face/i.test(t.label)?"user":null:null}static _drawToCanvas(e,t=null,i=null,n=!1){i=i||document.createElement("canvas");const a=t&&t.x?t.x:0,r=t&&t.y?t.y:0,s=t&&t.width?t.width:e.width||e.videoWidth,o=t&&t.height?t.height:e.height||e.videoHeight;n||(i.width=t&&t.downScaledWidth?t.downScaledWidth:s,i.height=t&&t.downScaledHeight?t.downScaledHeight:o);const c=i.getContext("2d",{alpha:!1});return c.imageSmoothingEnabled=!1,c.drawImage(e,a,r,s,o,0,0,i.width,i.height),[i,c]}static _loadImage(e){if(e instanceof HTMLCanvasElement||e instanceof HTMLVideoElement||window.ImageBitmap&&e instanceof window.ImageBitmap||window.OffscreenCanvas&&e instanceof window.OffscreenCanvas)return Promise.resolve(e);if(e instanceof Image)return QrScanner._awaitImageLoad(e).then((()=>e));if(e instanceof File||e instanceof Blob||e instanceof URL||"string"==typeof e){const t=new Image;return e instanceof File||e instanceof Blob?t.src=URL.createObjectURL(e):t.src=e,QrScanner._awaitImageLoad(t).then((()=>((e instanceof File||e instanceof Blob)&&URL.revokeObjectURL(t.src),t)))}return Promise.reject("Unsupported image type.")}static _awaitImageLoad(e){return new Promise(((t,i)=>{if(e.complete&&0!==e.naturalWidth)t();else{let n,a;n=()=>{e.removeEventListener("load",n),e.removeEventListener("error",a),t()},a=()=>{e.removeEventListener("load",n),e.removeEventListener("error",a),i("Image load error")},e.addEventListener("load",n),e.addEventListener("error",a)}}))}static _postWorkerMessage(e,t,i){return Promise.resolve(e).then((e=>{e instanceof Worker&&e.postMessage({type:t,data:i})}))}}QrScanner.DEFAULT_CANVAS_SIZE=400,QrScanner.NO_QR_CODE_FOUND="No QR code found",QrScanner.WORKER_PATH="assets_js_lib_qr-scanner-worker.min.js";