Images Table: Add clones table for AWS composes

src/Utilities/time.js

@@ -1,15 +1,3 @@
-export const timestampToISO8601 = (timestamp) => {
-  if (!timestamp) {
-    return '';
-  }
-
-  const date = timestamp.slice(0, 10);
-  const time = timestamp.slice(11, 26);
-
-  return `${date}T${time}+0000`;
-};
-
-
 export const timestampToDisplayString = (ts) => {
   // timestamp has format 2021-04-27 12:31:12.794809 +0000 UTC
   // must be converted to ms timestamp and then reformatted to Apr 27, 2021
@@ -24,3 +12,30 @@ export const timestampToDisplayString = (ts) => {
   const tsDisplay = new Intl.DateTimeFormat('en-US', options).format(ms);
   return tsDisplay;
 };
+
+export const convertStringToDate = (createdAtAsString) => {
+  if (isNaN(Date.parse(createdAtAsString))) {
+    // converts property created_at of the image object from string to UTC
+    const [dateValues, timeValues] = createdAtAsString.split(' ');
+    const datetimeString = `${dateValues}T${timeValues}Z`;
+    return Date.parse(datetimeString);
+  } else {
+    return Date.parse(createdAtAsString);
+  }
+};
+
+export const hoursToExpiration = (imageCreatedAt) => {
+  if (imageCreatedAt) {
+    const currentTime = Date.now();
+    // miliseconds in hour - needed for calculating the difference
+    // between current date and the date of the image creation
+    const msInHour = 1000 * 60 * 60;
+    const timeUntilExpiration = Math.floor(
+      (currentTime - convertStringToDate(imageCreatedAt)) / msInHour
+    );
+    return timeUntilExpiration;
+  } else {
+    // when creating a new image, the compose.created_at can be undefined when first queued
+    return 0;
+  }
+};