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resources/assets/vendor/libs/dropzone/dropzone.js

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+import Dropzone from 'dropzone/dist/dropzone';
+
+Dropzone.autoDiscover = false;
+
+// File upload progress animation
+Dropzone.prototype.uploadFiles = function (files) {
+  const minSteps = 6;
+  const maxSteps = 60;
+  const timeBetweenSteps = 100;
+  const bytesPerStep = 100000;
+  const isUploadSuccess = true;
+
+  const self = this;
+
+  for (let i = 0; i < files.length; i++) {
+    const file = files[i];
+    const totalSteps = Math.round(Math.min(maxSteps, Math.max(minSteps, file.size / bytesPerStep)));
+
+    for (let step = 0; step < totalSteps; step++) {
+      const duration = timeBetweenSteps * (step + 1);
+
+      setTimeout(
+        (function (file, totalSteps, step) {
+          return function () {
+            file.upload = {
+              progress: (100 * (step + 1)) / totalSteps,
+              total: file.size,
+              bytesSent: ((step + 1) * file.size) / totalSteps
+            };
+
+            self.emit('uploadprogress', file, file.upload.progress, file.upload.bytesSent);
+            if (file.upload.progress === 100) {
+              if (isUploadSuccess) {
+                file.status = Dropzone.SUCCESS;
+                self.emit('success', file, 'success', null);
+              } else {
+                file.status = Dropzone.ERROR;
+                self.emit('error', file, 'Some upload error', null);
+              }
+
+              self.emit('complete', file);
+              self.processQueue();
+            }
+          };
+        })(file, totalSteps, step),
+        duration
+      );
+    }
+  }
+};
+
+try {
+  window.Dropzone = Dropzone;
+} catch (e) {}
+
+export { Dropzone };