Add size and play count/date to Song Details

ui/src/common/SizeField.js

@@ -0,0 +1,30 @@
+import React from 'react'
+import PropTypes from 'prop-types'
+
+const SizeField = ({ record = {}, source }) => {
+  return <span>{formatBytes(record[source])}</span>
+}
+
+function formatBytes(bytes, decimals = 2) {
+  if (bytes === 0) return '0 Bytes'
+
+  const k = 1024
+  const dm = decimals < 0 ? 0 : decimals
+  const sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB']
+
+  const i = Math.floor(Math.log(bytes) / Math.log(k))
+
+  return parseFloat((bytes / Math.pow(k, i)).toFixed(dm)) + ' ' + sizes[i]
+}
+
+SizeField.propTypes = {
+  label: PropTypes.string,
+  record: PropTypes.object,
+  source: PropTypes.string.isRequired
+}
+
+SizeField.defaultProps = {
+  addLabel: true
+}
+
+export default SizeField