modularize localStorage calls into localStorage.js in preparation for unit testing

source/assets/scripts/localStorage.js

@@ -1,7 +1,68 @@
 /**
- * @returns {Array<Object>} An array of reviews found in localStorage
+ * Creates a new review to storage and performs related meta tasks
+ * @param {Object} review to store
+ * @return {number} ID of the newly added review
  */
-export function getReviewsFromStorage() {
+export function newReviewToStorage(review){
+	//grabbing the nextID, and putting our review object in storage associated with the ID
+	let nextReviewId = JSON.parse(localStorage.getItem("nextID"));
+	review["reviewID"] = nextReviewId;
+
+	// set the review entry to the review object
+	localStorage.setItem(`review${nextReviewId}`, JSON.stringify(review));
+	
+	//updating our activeIDS list
+	let tempIdArr = JSON.parse(localStorage.getItem("activeIDS"));
+	tempIdArr.push(nextReviewId);
+	localStorage.setItem("activeIDS", JSON.stringify(tempIdArr));
+	
+	//increment nextID for next review creation
+	nextReviewId++;
+	localStorage.setItem("nextID", JSON.stringify(nextReviewId));
+
+	return nextReviewId;
+}
+
+/**
+ * Gets a single review by ID from storage
+ * @param {string} ID of the review to get
+ * @returns {Object} review object corresponding to param ID
+ */
+export function getReviewFromStorage(ID){
+	return JSON.parse(localStorage.getItem(`review${ID}`));
+}
+
+/**
+ * Updates a single review by ID to storage
+ * @param {string} ID of review to update
+ * @param {Object} review to store
+ */
+export function updateReviewToStorage(ID, review){
+	// set the review entry with ID to the review object
+	localStorage.setItem(`review${ID}`, JSON.stringify(review));
+}
+
+/**
+ * Deletes a review by ID from storage
+ * @param {string} ID of the review to delete
+ */
+export function deleteReviewFromStorage(ID){
+	let activeIDS = JSON.parse(localStorage.getItem("activeIDS"));
+
+	for (let i in activeIDS) {
+		if (activeIDS[i] == ID) {
+			activeIDS.splice(i,1);
+			localStorage.setItem('activeIDS', JSON.stringify(activeIDS));
+			localStorage.removeItem(`review${ID}`)
+			return;
+		}
+	}
+
+	console.error(`could not find review${ID} in localStorage`);
+}
+
+// legacy function
+export function getAllReviewsFromStorage() {
 	if (!(localStorage.getItem("activeIDS"))) {
 		// we wanna init the active ID array and start the nextID count
 		localStorage.setItem("activeIDS", JSON.stringify([]));
@@ -11,17 +72,8 @@ export function getReviewsFromStorage() {
 	let activeIDS = JSON.parse(localStorage.getItem("activeIDS"));
 	let reviews = []
 	for (let i = 0; i < activeIDS.length; i++) {
-		let currReview = JSON.parse(localStorage.getItem('review'+activeIDS[i]));
+		let currReview = JSON.parse(localStorage.getItem(`review${activeIDS[i]}`));
 		reviews.push(currReview);
 	}
 	return reviews;
-}
-
-/**
- * Takes in an array of reviews, converts it to a string, and then
- * saves that string to 'reviews' in localStorage
- * @param {Array<Object>} reviews An array of reviews
- */
-export function saveReviewsToStorage(reviews) {
-	localStorage.setItem(`review${reviewId}`, JSON.stringify(reviews));
-}
+}