(function(e){e.S3MP=function(){function t(t){var r,i=[],s=this;_.extend(this,t),this.uploadList=[],this.handler={beginUpload:function(){function t(t,n){var r=n.key,i=n.parts.length;typeof e[r]=="undefined"&&(e[r]=0),e[r]++;if(e[r]===i){for(var o=0;o<t;o++)n.parts[o].activate();s.handler.startProgressTimer(r),s.onStart(n)}}var e=[];return t}(),onError:function(e,t){},onPartSuccess:function(e,t){var n,r,i;n=e.parts,i=t.xhr.getResponseHeader("ETag"),e.Etags.push({ETag:i.replace(/\"/g,""),partNum:t.num}),e.uploaded+=t.size,e.inprogress[t.num]=0,r=_.indexOf(n,t),n.splice(r,1),n.length&&(r=_.findIndex(n,function(e,t,n){if(e.status!=="active")return!0}),r!==-1&&n[r].activate()),n.length||this.onComplete(e)},onComplete:function(e){var t=_.indexOf(s.uploadList,e);this.clearProgressTimer(t),s.completeMultipart(e,function(t){t.location&&s.onComplete(e)})},onProgress:function(e,t,n,r,i){s.onProgress(e,t,n,r,i)},startProgressTimer:function(){var t=[],n=function(n){i[n]=e.setInterval(function(){var e,r,i,o,u;typeof t[n]=="undefined"&&(t[n]=0),e=s.uploadList[n],r=e.size,i=e.uploaded,_.each(e.inprogress,function(e){i+=e}),o=i/r*100,u=i-t[n],t[n]=i,e.handler.onProgress(n,r,i,o,u)},1e3)};return n}(),clearProgressTimer:function(t){e.clearInterval(i[t])}},this.fileSelector?r=$(this.fileSelector).get(0).files:r=this.fileList,_.each(r,function(e,t){if(e.size<5e6)return s.onError({name:"FileSizeError",message:"File size is too small"});var r=new n(e,s,t);s.uploadList.push(r),r.init()})}function n(e,t,n){function i(){var t,i,s,o,u,a,f,l,c;t=this,this.key=n,this.file=e,this.name=e.name,this.size=e.size,this.type=e.type,this.Etags=[],this.inprogress=[],this.uploaded=0,this.status="",this.size>1e9?(num_segs=100,l=10):this.size>5e8?(num_segs=50,l=5):this.size>1e8?(num_segs=20,l=5):(num_segs=2,l=2),a=_.range(num_segs+1),f=_.map(a,function(t){return Math.round(t*(e.size/num_segs))}),t.sliceBlob=="Unsupported"?this.parts=[new r(e,0,t)]:(this.parts=_.map(f,function(n,i){return c=t.sliceBlob(e,n,f[i+1]),new r(c,i+1,t)}),this.parts.pop()),this.init=function(){t.initiateMultipart(t,function(e){var n=t.id=e.id,r=t.upload_id=e.upload_id,i=t.object_name=e.key,s=t.parts;t.signPartRequests(n,i,r,s,function(e){_.each(s,function(n,s){var o=n.xhr;o.open("PUT","http://"+t.bucket+".s3.amazonaws.com/"+i+"?partNumber="+n.num+"&uploadId="+r,!0),o.setRequestHeader("x-amz-date",e[s].date),o.setRequestHeader("Authorization",e[s].authorization),t.handler.beginUpload(l,t)})})})}}return i.prototype=t,new i}function r(e,t,n){var r,i;r=this,this.size=e.size,this.blob=e,this.num=t,this.xhr=i=n.createXhrRequest(),i.onload=function(){n.handler.onPartSuccess(n,r)},i.onerror=function(){n.handler.onError(n,r)},i.upload.onprogress=_.throttle(function(e){n.inprogress[t]=e.loaded},1e3)}return _.mixin({findIndex:function(e,t){for(var n=0;n<e.length;n++)if(t(e[n],n,e))return n;return-1}}),t.prototype.initiateMultipart=function(e,t){var n,r,i;n="/s3_multipart/uploads",r=JSON.stringify({object_name:e.name,content_type:e.type,content_size:e.size,uploader:$(this.fileInputElement).data("uploader")}),i=this.createXhrRequest("POST",n),this.deliverRequest(i,r,t)},t.prototype.signPartRequests=function(e,t,n,r,i){var s,o,u,a;s=_.reduce(_.rest(r),function(e,t){return e+"-"+t.size},r[0].size),o="s3_multipart/uploads/"+e,u=JSON.stringify({object_name:t,upload_id:n,content_lengths:s}),a=this.createXhrRequest("PUT",o),this.deliverRequest(a,u,i)},t.prototype.completeMultipart=function(e,t){var n,r,i;n="s3_multipart/uploads/"+e.id,r=JSON.stringify({object_name:e.object_name,upload_id:e.upload_id,content_length:e.size,parts:e.Etags}),i=this.createXhrRequest("PUT",n),this.deliverRequest(i,r,t)},t.prototype.deliverRequest=function(e,t,n){var r=this;e.onload=function(){response=JSON.parse(this.responseText);if(response.error)return r.onError({name:"ServerResponse",message:"The server responded with an error"});n(response)},e.onerror=function(){},e.setRequestHeader("Content-Type","application/json"),e.setRequestHeader("X-CSRF-Token",$('meta[name="csrf-token"]').attr("content")),e.send(t)},t.prototype.createXhrRequest=function(){var e;return typeof XMLHttpRequest.constructor=="function"?e=XMLHttpRequest:typeof XDomainRequest!="undefined"?e=XDomainRequest:e=null,function(t,n,r,i){var s,o,i=!0;return s=Array.prototype.slice.call(arguments),typeof s[0]=="undefined"&&(r=null,i=!1),o=new e,i&&o.open(t,n,!0),o.onreadystatechange=r,o}}(),t.prototype.sliceBlob=function(){try{var e=new Blob}catch(t){return"Unsupported"}return e.slice?function(e,t,n){return e.slice(t,n)}:e.mozSlice?function(e,t,n){return e.mozSlice(t,n)}:e.webkitSlice?function(e,t,n){return e.webkitSlice(t,n)}:"Unsupported"}(),t.prototype._returnUploadObj=function(e){var t=_.find(this.uploadList,function(t){return t.key===e});return t},t.prototype.cancel=function(e){var t,n;t=this._returnUploadObj(e),n=_.indexOf(this.uploadList,t),this.uploadList.splice(n,n+1),this.onCancel()},t.prototype.pause=function(e){var t=this._returnUploadObj(e);_.each(t.parts,function(e,t,n){e.status=="active"&&e.pause()}),this.onPause()},t.prototype.resume=function(e){var t=this._returnUploadObj(e);_.each(t.parts,function(e,t,n){e.status=="paused"&&e.activate()}),this.onResume()},r.prototype.activate=function(){this.xhr.send(this.blob),this.status="active"},r.prototype.pause=function(){this.xhr.abort(),this.status="paused"},t}()})(this);