diff --git a/config/adminlte.php b/config/adminlte.php
index b5763e3..0d0e7de 100644
--- a/config/adminlte.php
+++ b/config/adminlte.php
@@ -607,6 +607,22 @@ return [
                         'location' => 'https://cdnjs.cloudflare.com/ajax/libs/bootstrap-multiselect/0.9.15/css/bootstrap-multiselect.css',
                     ],
                 ],
+                [
+                    'name' => 'DropzoneJS',
+                    'active' => true,
+                    'files' => [
+                        [
+                            'type' => 'js',
+                            'asset' => false,
+                            'location' => '/js/plugins/dropzone.min.js'
+                        ],
+                        [
+                            'type' => 'css',
+                            'asset' => false,
+                            'location' => '/css/dropzone.min.css'
+                        ]
+                    ]
+                ]
             ],
     ],
 ];
diff --git a/public/css/basic.min.css b/public/css/basic.min.css
new file mode 100644
index 0000000..5238d5c
--- /dev/null
+++ b/public/css/basic.min.css
@@ -0,0 +1 @@
+.dropzone,.dropzone *{box-sizing:border-box}.dropzone{position:relative}.dropzone .dz-preview{position:relative;display:inline-block;width:120px;margin:0.5em}.dropzone .dz-preview .dz-progress{display:block;height:15px;border:1px solid #aaa}.dropzone .dz-preview .dz-progress .dz-upload{display:block;height:100%;width:0;background:green}.dropzone .dz-preview .dz-error-message{color:red;display:none}.dropzone .dz-preview.dz-error .dz-error-message,.dropzone .dz-preview.dz-error .dz-error-mark{display:block}.dropzone .dz-preview.dz-success .dz-success-mark{display:block}.dropzone .dz-preview .dz-error-mark,.dropzone .dz-preview .dz-success-mark{position:absolute;display:none;left:30px;top:30px;width:54px;height:58px;left:50%;margin-left:-27px}
diff --git a/public/css/dropzone.min.css b/public/css/dropzone.min.css
new file mode 100644
index 0000000..1b63110
--- /dev/null
+++ b/public/css/dropzone.min.css
@@ -0,0 +1 @@
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.dz-error-mark{opacity:1;-webkit-animation:slide-in 3s cubic-bezier(0.77, 0, 0.175, 1);-moz-animation:slide-in 3s cubic-bezier(0.77, 0, 0.175, 1);-ms-animation:slide-in 3s cubic-bezier(0.77, 0, 0.175, 1);-o-animation:slide-in 3s cubic-bezier(0.77, 0, 0.175, 1);animation:slide-in 3s cubic-bezier(0.77, 0, 0.175, 1)}.dropzone .dz-preview .dz-success-mark,.dropzone .dz-preview .dz-error-mark{pointer-events:none;opacity:0;z-index:500;position:absolute;display:block;top:50%;left:50%;margin-left:-27px;margin-top:-27px}.dropzone .dz-preview .dz-success-mark svg,.dropzone .dz-preview .dz-error-mark svg{display:block;width:54px;height:54px}.dropzone .dz-preview.dz-processing .dz-progress{opacity:1;-webkit-transition:all 0.2s linear;-moz-transition:all 0.2s linear;-ms-transition:all 0.2s linear;-o-transition:all 0.2s linear;transition:all 0.2s linear}.dropzone .dz-preview.dz-complete .dz-progress{opacity:0;-webkit-transition:opacity 0.4s ease-in;-moz-transition:opacity 0.4s 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diff --git a/public/js/plugins/dropzone-amd-module.min.js b/public/js/plugins/dropzone-amd-module.min.js
new file mode 100644
index 0000000..6aec051
--- /dev/null
+++ b/public/js/plugins/dropzone-amd-module.min.js
@@ -0,0 +1 @@
+!function(e){"function"==typeof define&&define.amd?define(["jquery"],e):e(jQuery)}(function(e){var t={exports:{}};function n(e){return(n="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e})(e)}function a(e,t){return!t||"object"!==n(t)&&"function"!=typeof t?s(e):t}function l(e){return(l=Object.setPrototypeOf?Object.getPrototypeOf:function(e){return e.__proto__||Object.getPrototypeOf(e)})(e)}function s(e){if(void 0===e)throw new ReferenceError("this hasn't been initialised - super() hasn't been called");return e}function i(e,t){return(i=Object.setPrototypeOf||function(e,t){return e.__proto__=t,e})(e,t)}function u(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}function r(e,t){for(var n=0;n<t.length;n++){var i=t[n];i.enumerable=i.enumerable||!1,i.configurable=!0,"value"in i&&(i.writable=!0),Object.defineProperty(e,i.key,i)}}function o(e,t,n){return t&&r(e.prototype,t),n&&r(e,n),e}var c=function(){function e(){u(this,e)}return o(e,[{key:"on",value:function(e,t){return this._callbacks=this._callbacks||{},this._callbacks[e]||(this._callbacks[e]=[]),this._callbacks[e].push(t),this}},{key:"emit",value:function(e){this._callbacks=this._callbacks||{};var t=this._callbacks[e];if(t){for(var n=arguments.length,i=new Array(1<n?n-1:0),r=1;r<n;r++)i[r-1]=arguments[r];var o=!0,a=!1,l=void 0;try{for(var s,u=t[Symbol.iterator]();!(o=(s=u.next()).done);o=!0){s.value.apply(this,i)}}catch(e){a=!0,l=e}finally{try{o||null==u.return||u.return()}finally{if(a)throw l}}}return this}},{key:"off",value:function(e,t){if(!this._callbacks||0===arguments.length)return this._callbacks={},this;var n=this._callbacks[e];if(!n)return this;if(1===arguments.length)return delete this._callbacks[e],this;for(var i=0;i<n.length;i++){if(n[i]===t){n.splice(i,1);break}}return this}}]),e}(),d=function(){function z(e,t){var n,i,r;if(u(this,z),(n=a(this,l(z).call(this))).element=e,n.version=z.version,n.defaultOptions.previewTemplate=n.defaultOptions.previewTemplate.replace(/\n*/g,""),n.clickableElements=[],n.listeners=[],n.files=[],"string"==typeof n.element&&(n.element=document.querySelector(n.element)),!n.element||null==n.element.nodeType)throw new Error("Invalid dropzone element.");if(n.element.dropzone)throw new Error("Dropzone already attached.");z.instances.push(s(n)),n.element.dropzone=s(n);var o=null!=(r=z.optionsForElement(n.element))?r:{};if(n.options=z.extend({},n.defaultOptions,o,null!=t?t:{}),n.options.forceFallback||!z.isBrowserSupported())return a(n,n.options.fallback.call(s(n)));if(null==n.options.url&&(n.options.url=n.element.getAttribute("action")),!n.options.url)throw new Error("No URL provided.");if(n.options.acceptedFiles&&n.options.acceptedMimeTypes)throw new Error("You can't provide both 'acceptedFiles' and 'acceptedMimeTypes'. 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diff --git a/public/js/plugins/dropzone.min.js b/public/js/plugins/dropzone.min.js
new file mode 100644
index 0000000..a4d6480
--- /dev/null
+++ b/public/js/plugins/dropzone.min.js
@@ -0,0 +1 @@
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n=this;if(this.element===this.previewsContainer&&this.element.classList.add("dz-started"),this.previewsContainer){t.previewElement=C.createElement(this.options.previewTemplate.trim()),t.previewTemplate=t.previewElement,this.previewsContainer.appendChild(t.previewElement);var e=!0,i=!1,r=void 0;try{for(var o,a=t.previewElement.querySelectorAll("[data-dz-name]")[Symbol.iterator]();!(e=(o=a.next()).done);e=!0){var l=o.value;l.textContent=t.name}}catch(e){i=!0,r=e}finally{try{e||null==a.return||a.return()}finally{if(i)throw r}}var s=!0,u=!1,c=void 0;try{for(var d,p=t.previewElement.querySelectorAll("[data-dz-size]")[Symbol.iterator]();!(s=(d=p.next()).done);s=!0)(l=d.value).innerHTML=this.filesize(t.size)}catch(e){u=!0,c=e}finally{try{s||null==p.return||p.return()}finally{if(u)throw c}}this.options.addRemoveLinks&&(t._removeLink=C.createElement('<a class="dz-remove" href="javascript:undefined;" data-dz-remove>'.concat(this.options.dictRemoveFile,"</a>")),t.previewElement.appendChild(t._removeLink));var h=function(e){return e.preventDefault(),e.stopPropagation(),t.status===C.UPLOADING?C.confirm(n.options.dictCancelUploadConfirmation,function(){return n.removeFile(t)}):n.options.dictRemoveFileConfirmation?C.confirm(n.options.dictRemoveFileConfirmation,function(){return n.removeFile(t)}):n.removeFile(t)},f=!0,v=!1,m=void 0;try{for(var y,g=t.previewElement.querySelectorAll("[data-dz-remove]")[Symbol.iterator]();!(f=(y=g.next()).done);f=!0){y.value.addEventListener("click",h)}}catch(e){v=!0,m=e}finally{try{f||null==g.return||g.return()}finally{if(v)throw m}}}},removedfile:function(e){return null!=e.previewElement&&null!=e.previewElement.parentNode&&e.previewElement.parentNode.removeChild(e.previewElement),this._updateMaxFilesReachedClass()},thumbnail:function(e,t){if(e.previewElement){e.previewElement.classList.remove("dz-file-preview");var n=!0,i=!1,r=void 0;try{for(var o,a=e.previewElement.querySelectorAll("[data-dz-thumbnail]")[Symbol.iterator]();!(n=(o=a.next()).done);n=!0){var l=o.value;l.alt=e.name,l.src=t}}catch(e){i=!0,r=e}finally{try{n||null==a.return||a.return()}finally{if(i)throw r}}return setTimeout(function(){return e.previewElement.classList.add("dz-image-preview")},1)}},error:function(e,t){if(e.previewElement){e.previewElement.classList.add("dz-error"),"String"!=typeof t&&t.error&&(t=t.error);var n=!0,i=!1,r=void 0;try{for(var o,a=e.previewElement.querySelectorAll("[data-dz-errormessage]")[Symbol.iterator]();!(n=(o=a.next()).done);n=!0){o.value.textContent=t}}catch(e){i=!0,r=e}finally{try{n||null==a.return||a.return()}finally{if(i)throw r}}}},errormultiple:function(){},processing:function(e){if(e.previewElement&&(e.previewElement.classList.add("dz-processing"),e._removeLink))return e._removeLink.innerHTML=this.options.dictCancelUpload},processingmultiple:function(){},uploadprogress:function(e,t){if(e.previewElement){var n=!0,i=!1,r=void 0;try{for(var o,a=e.previewElement.querySelectorAll("[data-dz-uploadprogress]")[Symbol.iterator]();!(n=(o=a.next()).done);n=!0){var l=o.value;"PROGRESS"===l.nodeName?l.value=t:l.style.width="".concat(t,"%")}}catch(e){i=!0,r=e}finally{try{n||null==a.return||a.return()}finally{if(i)throw r}}}},totaluploadprogress:function(){},sending:function(){},sendingmultiple:function(){},success:function(e){if(e.previewElement)return e.previewElement.classList.add("dz-success")},successmultiple:function(){},canceled:function(e){return this.emit("error",e,this.options.dictUploadCanceled)},canceledmultiple:function(){},complete:function(e){if(e._removeLink&&(e._removeLink.innerHTML=this.options.dictRemoveFile),e.previewElement)return e.previewElement.classList.add("dz-complete")},completemultiple:function(){},maxfilesexceeded:function(){},maxfilesreached:function(){},queuecomplete:function(){},addedfiles:function(){}},this.prototype._thumbnailQueue=[],this.prototype._processingThumbnail=!1}},{key:"extend",value:function(e){for(var t=arguments.length,n=new Array(1<t?t-1:0),i=1;i<t;i++)n[i-1]=arguments[i];for(var r=0,o=n;r<o.length;r++){var a=o[r];for(var l in a){var s=a[l];e[l]=s}}return e}}]),_createClass(C,[{key:"getAcceptedFiles",value:function(){return this.files.filter(function(e){return e.accepted}).map(function(e){return e})}},{key:"getRejectedFiles",value:function(){return this.files.filter(function(e){return!e.accepted}).map(function(e){return e})}},{key:"getFilesWithStatus",value:function(t){return this.files.filter(function(e){return e.status===t}).map(function(e){return e})}},{key:"getQueuedFiles",value:function(){return this.getFilesWithStatus(C.QUEUED)}},{key:"getUploadingFiles",value:function(){return this.getFilesWithStatus(C.UPLOADING)}},{key:"getAddedFiles",value:function(){return this.getFilesWithStatus(C.ADDED)}},{key:"getActiveFiles",value:function(){return this.files.filter(function(e){return e.status===C.UPLOADING||e.status===C.QUEUED}).map(function(e){return e})}},{key:"init",value:function(){var s=this;if("form"===this.element.tagName&&this.element.setAttribute("enctype","multipart/form-data"),this.element.classList.contains("dropzone")&&!this.element.querySelector(".dz-message")&&this.element.appendChild(C.createElement('<div class="dz-default dz-message"><button class="dz-button" type="button">'.concat(this.options.dictDefaultMessage,"</button></div>"))),this.clickableElements.length){!function l(){return s.hiddenFileInput&&s.hiddenFileInput.parentNode.removeChild(s.hiddenFileInput),s.hiddenFileInput=document.createElement("input"),s.hiddenFileInput.setAttribute("type","file"),(null===s.options.maxFiles||1<s.options.maxFiles)&&s.hiddenFileInput.setAttribute("multiple","multiple"),s.hiddenFileInput.className="dz-hidden-input",null!==s.options.acceptedFiles&&s.hiddenFileInput.setAttribute("accept",s.options.acceptedFiles),null!==s.options.capture&&s.hiddenFileInput.setAttribute("capture",s.options.capture),s.hiddenFileInput.style.visibility="hidden",s.hiddenFileInput.style.position="absolute",s.hiddenFileInput.style.top="0",s.hiddenFileInput.style.left="0",s.hiddenFileInput.style.height="0",s.hiddenFileInput.style.width="0",C.getElement(s.options.hiddenInputContainer,"hiddenInputContainer").appendChild(s.hiddenFileInput),s.hiddenFileInput.addEventListener("change",function(){var e=s.hiddenFileInput.files;if(e.length){var t=!0,n=!1,i=void 0;try{for(var r,o=e[Symbol.iterator]();!(t=(r=o.next()).done);t=!0){var a=r.value;s.addFile(a)}}catch(e){n=!0,i=e}finally{try{t||null==o.return||o.return()}finally{if(n)throw i}}}return s.emit("addedfiles",e),l()})}()}this.URL=null!==window.URL?window.URL:window.webkitURL;var e=!0,t=!1,n=void 0;try{for(var i,r=this.events[Symbol.iterator]();!(e=(i=r.next()).done);e=!0){var o=i.value;this.on(o,this.options[o])}}catch(e){t=!0,n=e}finally{try{e||null==r.return||r.return()}finally{if(t)throw n}}this.on("uploadprogress",function(){return s.updateTotalUploadProgress()}),this.on("removedfile",function(){return s.updateTotalUploadProgress()}),this.on("canceled",function(e){return s.emit("complete",e)}),this.on("complete",function(e){if(0===s.getAddedFiles().length&&0===s.getUploadingFiles().length&&0===s.getQueuedFiles().length)return setTimeout(function(){return s.emit("queuecomplete")},0)});function a(e){var t;return(t=e).dataTransfer.types&&t.dataTransfer.types.some(function(e){return"Files"==e})&&(e.stopPropagation(),e.preventDefault?e.preventDefault():e.returnValue=!1)}return this.listeners=[{element:this.element,events:{dragstart:function(e){return s.emit("dragstart",e)},dragenter:function(e){return a(e),s.emit("dragenter",e)},dragover:function(e){var t;try{t=e.dataTransfer.effectAllowed}catch(e){}return e.dataTransfer.dropEffect="move"===t||"linkMove"===t?"move":"copy",a(e),s.emit("dragover",e)},dragleave:function(e){return s.emit("dragleave",e)},drop:function(e){return a(e),s.drop(e)},dragend:function(e){return s.emit("dragend",e)}}}],this.clickableElements.forEach(function(t){return s.listeners.push({element:t,events:{click:function(e){return t===s.element&&e.target!==s.element&&!C.elementInside(e.target,s.element.querySelector(".dz-message"))||s.hiddenFileInput.click(),!0}}})}),this.enable(),this.options.init.call(this)}},{key:"destroy",value:function(){return this.disable(),this.removeAllFiles(!0),null!=this.hiddenFileInput&&this.hiddenFileInput.parentNode&&(this.hiddenFileInput.parentNode.removeChild(this.hiddenFileInput),this.hiddenFileInput=null),delete this.element.dropzone,C.instances.splice(C.instances.indexOf(this),1)}},{key:"updateTotalUploadProgress",value:function(){var e,t=0,n=0;if(this.getActiveFiles().length){var i=!0,r=!1,o=void 0;try{for(var a,l=this.getActiveFiles()[Symbol.iterator]();!(i=(a=l.next()).done);i=!0){var s=a.value;t+=s.upload.bytesSent,n+=s.upload.total}}catch(e){r=!0,o=e}finally{try{i||null==l.return||l.return()}finally{if(r)throw o}}e=100*t/n}else e=100;return this.emit("totaluploadprogress",e,n,t)}},{key:"_getParamName",value:function(e){return"function"==typeof this.options.paramName?this.options.paramName(e):"".concat(this.options.paramName).concat(this.options.uploadMultiple?"[".concat(e,"]"):"")}},{key:"_renameFile",value:function(e){return"function"!=typeof this.options.renameFile?e.name:this.options.renameFile(e)}},{key:"getFallbackForm",value:function(){var e,t;if(e=this.getExistingFallback())return e;var n='<div class="dz-fallback">';this.options.dictFallbackText&&(n+="<p>".concat(this.options.dictFallbackText,"</p>")),n+='<input type="file" name="'.concat(this._getParamName(0),'" ').concat(this.options.uploadMultiple?'multiple="multiple"':void 0,' /><input type="submit" value="Upload!"></div>');var i=C.createElement(n);return"FORM"!==this.element.tagName?(t=C.createElement('<form action="'.concat(this.options.url,'" enctype="multipart/form-data" method="').concat(this.options.method,'"></form>'))).appendChild(i):(this.element.setAttribute("enctype","multipart/form-data"),this.element.setAttribute("method",this.options.method)),null!=t?t:i}},{key:"getExistingFallback",value:function(){for(var e=function(e){var t=!0,n=!1,i=void 0;try{for(var r,o=e[Symbol.iterator]();!(t=(r=o.next()).done);t=!0){var a=r.value;if(/(^| )fallback($| )/.test(a.className))return a}}catch(e){n=!0,i=e}finally{try{t||null==o.return||o.return()}finally{if(n)throw i}}},t=0,n=["div","form"];t<n.length;t++){var i,r=n[t];if(i=e(this.element.getElementsByTagName(r)))return i}}},{key:"setupEventListeners",value:function(){return this.listeners.map(function(i){return function(){var e=[];for(var t in i.events){var n=i.events[t];e.push(i.element.addEventListener(t,n,!1))}return e}()})}},{key:"removeEventListeners",value:function(){return this.listeners.map(function(i){return function(){var e=[];for(var t in i.events){var n=i.events[t];e.push(i.element.removeEventListener(t,n,!1))}return e}()})}},{key:"disable",value:function(){var t=this;return this.clickableElements.forEach(function(e){return e.classList.remove("dz-clickable")}),this.removeEventListeners(),this.disabled=!0,this.files.map(function(e){return t.cancelUpload(e)})}},{key:"enable",value:function(){return delete this.disabled,this.clickableElements.forEach(function(e){return e.classList.add("dz-clickable")}),this.setupEventListeners()}},{key:"filesize",value:function(e){var t=0,n="b";if(0<e){for(var i=["tb","gb","mb","kb","b"],r=0;r<i.length;r++){var o=i[r];if(Math.pow(this.options.filesizeBase,4-r)/10<=e){t=e/Math.pow(this.options.filesizeBase,4-r),n=o;break}}t=Math.round(10*t)/10}return"<strong>".concat(t,"</strong> ").concat(this.options.dictFileSizeUnits[n])}},{key:"_updateMaxFilesReachedClass",value:function(){return null!=this.options.maxFiles&&this.getAcceptedFiles().length>=this.options.maxFiles?(this.getAcceptedFiles().length===this.options.maxFiles&&this.emit("maxfilesreached",this.files),this.element.classList.add("dz-max-files-reached")):this.element.classList.remove("dz-max-files-reached")}},{key:"drop",value:function(e){if(e.dataTransfer){this.emit("drop",e);for(var t=[],n=0;n<e.dataTransfer.files.length;n++)t[n]=e.dataTransfer.files[n];if(t.length){var i=e.dataTransfer.items;i&&i.length&&null!=i[0].webkitGetAsEntry?this._addFilesFromItems(i):this.handleFiles(t)}this.emit("addedfiles",t)}}},{key:"paste",value:function(e){if(null!=__guard__(null!=e?e.clipboardData:void 0,function(e){return e.items})){this.emit("paste",e);var t=e.clipboardData.items;return t.length?this._addFilesFromItems(t):void 0}}},{key:"handleFiles",value:function(e){var t=!0,n=!1,i=void 0;try{for(var r,o=e[Symbol.iterator]();!(t=(r=o.next()).done);t=!0){var a=r.value;this.addFile(a)}}catch(e){n=!0,i=e}finally{try{t||null==o.return||o.return()}finally{if(n)throw i}}}},{key:"_addFilesFromItems",value:function(s){var u=this;return function(){var e=[],t=!0,n=!1,i=void 0;try{for(var r,o=s[Symbol.iterator]();!(t=(r=o.next()).done);t=!0){var a,l=r.value;null!=l.webkitGetAsEntry&&(a=l.webkitGetAsEntry())?a.isFile?e.push(u.addFile(l.getAsFile())):a.isDirectory?e.push(u._addFilesFromDirectory(a,a.name)):e.push(void 0):null!=l.getAsFile&&(null==l.kind||"file"===l.kind)?e.push(u.addFile(l.getAsFile())):e.push(void 0)}}catch(e){n=!0,i=e}finally{try{t||null==o.return||o.return()}finally{if(n)throw i}}return e}()}},{key:"_addFilesFromDirectory",value:function(e,s){function t(t){return __guardMethod__(console,"log",function(e){return e.log(t)})}var u=this,n=e.createReader();return function l(){return n.readEntries(function(e){if(0<e.length){var t=!0,n=!1,i=void 0;try{for(var r,o=e[Symbol.iterator]();!(t=(r=o.next()).done);t=!0){var a=r.value;a.isFile?a.file(function(e){if(!u.options.ignoreHiddenFiles||"."!==e.name.substring(0,1))return e.fullPath="".concat(s,"/").concat(e.name),u.addFile(e)}):a.isDirectory&&u._addFilesFromDirectory(a,"".concat(s,"/").concat(a.name))}}catch(e){n=!0,i=e}finally{try{t||null==o.return||o.return()}finally{if(n)throw i}}l()}return null},t)}()}},{key:"accept",value:function(e,t){this.options.maxFilesize&&e.size>1024*this.options.maxFilesize*1024?t(this.options.dictFileTooBig.replace("{{filesize}}",Math.round(e.size/1024/10.24)/100).replace("{{maxFilesize}}",this.options.maxFilesize)):C.isValidFile(e,this.options.acceptedFiles)?null!=this.options.maxFiles&&this.getAcceptedFiles().length>=this.options.maxFiles?(t(this.options.dictMaxFilesExceeded.replace("{{maxFiles}}",this.options.maxFiles)),this.emit("maxfilesexceeded",e)):this.options.accept.call(this,e,t):t(this.options.dictInvalidFileType)}},{key:"addFile",value:function(t){var n=this;t.upload={uuid:C.uuidv4(),progress:0,total:t.size,bytesSent:0,filename:this._renameFile(t)},this.files.push(t),t.status=C.ADDED,this.emit("addedfile",t),this._enqueueThumbnail(t),this.accept(t,function(e){e?(t.accepted=!1,n._errorProcessing([t],e)):(t.accepted=!0,n.options.autoQueue&&n.enqueueFile(t)),n._updateMaxFilesReachedClass()})}},{key:"enqueueFiles",value:function(e){var t=!0,n=!1,i=void 0;try{for(var r,o=e[Symbol.iterator]();!(t=(r=o.next()).done);t=!0){var a=r.value;this.enqueueFile(a)}}catch(e){n=!0,i=e}finally{try{t||null==o.return||o.return()}finally{if(n)throw i}}return null}},{key:"enqueueFile",value:function(e){var t=this;if(e.status!==C.ADDED||!0!==e.accepted)throw new Error("This file can't be queued because it has already been processed or was rejected.");if(e.status=C.QUEUED,this.options.autoProcessQueue)return setTimeout(function(){return t.processQueue()},0)}},{key:"_enqueueThumbnail",value:function(e){var t=this;if(this.options.createImageThumbnails&&e.type.match(/image.*/)&&e.size<=1024*this.options.maxThumbnailFilesize*1024)return this._thumbnailQueue.push(e),setTimeout(function(){return t._processThumbnailQueue()},0)}},{key:"_processThumbnailQueue",value:function(){var t=this;if(!this._processingThumbnail&&0!==this._thumbnailQueue.length){this._processingThumbnail=!0;var n=this._thumbnailQueue.shift();return this.createThumbnail(n,this.options.thumbnailWidth,this.options.thumbnailHeight,this.options.thumbnailMethod,!0,function(e){return t.emit("thumbnail",n,e),t._processingThumbnail=!1,t._processThumbnailQueue()})}}},{key:"removeFile",value:function(e){if(e.status===C.UPLOADING&&this.cancelUpload(e),this.files=without(this.files,e),this.emit("removedfile",e),0===this.files.length)return this.emit("reset")}},{key:"removeAllFiles",value:function(e){null==e&&(e=!1);var t=!0,n=!1,i=void 0;try{for(var r,o=this.files.slice()[Symbol.iterator]();!(t=(r=o.next()).done);t=!0){var a=r.value;a.status===C.UPLOADING&&!e||this.removeFile(a)}}catch(e){n=!0,i=e}finally{try{t||null==o.return||o.return()}finally{if(n)throw i}}return null}},{key:"resizeImage",value:function(r,e,t,n,o){var a=this;return this.createThumbnail(r,e,t,n,!0,function(e,t){if(null==t)return o(r);var n=a.options.resizeMimeType;null==n&&(n=r.type);var i=t.toDataURL(n,a.options.resizeQuality);return"image/jpeg"!==n&&"image/jpg"!==n||(i=ExifRestore.restore(r.dataURL,i)),o(C.dataURItoBlob(i))})}},{key:"createThumbnail",value:function(e,t,n,i,r,o){var a=this,l=new FileReader;l.onload=function(){e.dataURL=l.result,"image/svg+xml"!==e.type?a.createThumbnailFromUrl(e,t,n,i,r,o):null!=o&&o(l.result)},l.readAsDataURL(e)}},{key:"displayExistingFile",value:function(t,e,n,i,r){var o=this,a=!(4<arguments.length&&void 0!==r)||r;if(this.emit("addedfile",t),this.emit("complete",t),a){t.dataURL=e,this.createThumbnailFromUrl(t,this.options.thumbnailWidth,this.options.thumbnailHeight,this.options.resizeMethod,this.options.fixOrientation,function(e){o.emit("thumbnail",t,e),n&&n()},i)}else this.emit("thumbnail",t,e),n&&n()}},{key:"createThumbnailFromUrl",value:function(o,a,l,s,t,u,e){var c=this,d=document.createElement("img");return e&&(d.crossOrigin=e),d.onload=function(){var e=function(e){return e(1)};return"undefined"!=typeof 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u(r,n)})},null!=u&&(d.onerror=u),d.src=o.dataURL}},{key:"processQueue",value:function(){var e=this.options.parallelUploads,t=this.getUploadingFiles().length,n=t;if(!(e<=t)){var i=this.getQueuedFiles();if(0<i.length){if(this.options.uploadMultiple)return this.processFiles(i.slice(0,e-t));for(;n<e;){if(!i.length)return;this.processFile(i.shift()),n++}}}}},{key:"processFile",value:function(e){return this.processFiles([e])}},{key:"processFiles",value:function(e){var t=!0,n=!1,i=void 0;try{for(var r,o=e[Symbol.iterator]();!(t=(r=o.next()).done);t=!0){var a=r.value;a.processing=!0,a.status=C.UPLOADING,this.emit("processing",a)}}catch(e){n=!0,i=e}finally{try{t||null==o.return||o.return()}finally{if(n)throw i}}return this.options.uploadMultiple&&this.emit("processingmultiple",e),this.uploadFiles(e)}},{key:"_getFilesWithXhr",value:function(t){return this.files.filter(function(e){return e.xhr===t}).map(function(e){return e})}},{key:"cancelUpload",value:function(e){if(e.status===C.UPLOADING){var t=this._getFilesWithXhr(e.xhr),n=!0,i=!1,r=void 0;try{for(var o,a=t[Symbol.iterator]();!(n=(o=a.next()).done);n=!0){o.value.status=C.CANCELED}}catch(e){i=!0,r=e}finally{try{n||null==a.return||a.return()}finally{if(i)throw r}}void 0!==e.xhr&&e.xhr.abort();var l=!0,s=!1,u=void 0;try{for(var c,d=t[Symbol.iterator]();!(l=(c=d.next()).done);l=!0){var p=c.value;this.emit("canceled",p)}}catch(e){s=!0,u=e}finally{try{l||null==d.return||d.return()}finally{if(s)throw u}}this.options.uploadMultiple&&this.emit("canceledmultiple",t)}else e.status!==C.ADDED&&e.status!==C.QUEUED||(e.status=C.CANCELED,this.emit("canceled",e),this.options.uploadMultiple&&this.emit("canceledmultiple",[e]));if(this.options.autoProcessQueue)return this.processQueue()}},{key:"resolveOption",value:function(e){if("function"!=typeof e)return e;for(var t=arguments.length,n=new Array(1<t?t-1:0),i=1;i<t;i++)n[i-1]=arguments[i];return e.apply(this,n)}},{key:"uploadFile",value:function(e){return 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