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@@ -22,14 +22,15 @@ class SingletonManager {
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$rootScope.$on("sync:completed", (event, data) => {
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// The reason we also need to consider savedItems in consolidating singletons is in case of sync conflicts,
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// a new item can be created, but is never processed through "retrievedItems" since it is only created locally then saved.
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// HOWEVER, by considering savedItems, we are now ruining everything, especially during sign in. A singleton can be created
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// offline, and upon sign in, will sync all items to the server, and by combining retrievedItems & savedItems, and only choosing
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// the latest, you are now resolving to the most recent one, which is in the savedItems list and not retrieved items, defeating
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// the whole purpose of this thing.
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// Updated solution: resolveSingletons will now evaluate both of these arrays separately.
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this.resolveSingletons(data.retrievedItems, data.savedItems);
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})
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// Testing code to make sure only 1 exists
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// setTimeout(function () {
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// var userPrefs = modelManager.itemsForContentType("SN|UserPreferences");
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// console.assert(userPrefs.length == 1);
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// }, 1000);
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}
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registerSingleton(predicate, resolveCallback, createBlock) {
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@@ -48,10 +49,16 @@ class SingletonManager {
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resolveSingletons(retrievedItems, savedItems, initialLoad) {
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retrievedItems = retrievedItems || [];
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savedItems = savedItems || [];
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for(let singletonHandler of this.singletonHandlers) {
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var predicate = singletonHandler.predicate;
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var singletonItems = this.filterItemsWithPredicate(_.uniq(retrievedItems.concat(savedItems)), predicate);
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if(singletonItems.length > 0) {
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let retrievedSingletonItems = this.filterItemsWithPredicate(retrievedItems, predicate);
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// We only want to consider saved items count to see if it's more than 0, and do nothing else with it.
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// This way we know there was some action and things need to be resolved. The saved items will come up
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// in filterItemsWithPredicate(this.modelManager.allItems) and be deleted anyway
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let savedSingletonItemsCount = this.filterItemsWithPredicate(savedItems, predicate).length;
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if(retrievedSingletonItems.length > 0 || savedSingletonItemsCount > 0) {
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/*
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Check local inventory and make sure only 1 similar item exists. If more than 1, delete oldest
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Note that this local inventory will also contain whatever is in retrievedItems.
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@@ -61,22 +68,39 @@ class SingletonManager {
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var allExtantItemsMatchingPredicate = this.filterItemsWithPredicate(this.modelManager.allItems, predicate);
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/*
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If there are more than 1 matches, delete everything not in `singletonItems`,
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then delete all but the latest in `singletonItems`
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If there are more than 1 matches, delete everything not in `retrievedSingletonItems`,
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then delete all but the latest in `retrievedSingletonItems`
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*/
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if(allExtantItemsMatchingPredicate.length >= 2) {
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// Items that will be deleted
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var toDelete = [];
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for(let extantItem of allExtantItemsMatchingPredicate) {
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if(!singletonItems.includes(extantItem)) {
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// Delete it
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toDelete.push(extantItem);
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// The item that will be chosen to be kept
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var winningItem, sorted;
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if(retrievedSingletonItems.length > 0) {
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for(let extantItem of allExtantItemsMatchingPredicate) {
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if(!retrievedSingletonItems.includes(extantItem)) {
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// Delete it
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toDelete.push(extantItem);
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}
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}
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// Sort incoming singleton items by most recently updated first, then delete all the rest
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sorted = retrievedSingletonItems.sort((a, b) => {
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return a.updated_at < b.updated_at;
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})
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} else {
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// We're in here because of savedItems
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// This can be the case if retrievedSingletonItems/retrievedItems length is 0, but savedSingletonItemsCount is non zero.
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// In this case, we want to sort by date and delete all but the most recent one
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sorted = allExtantItemsMatchingPredicate.sort((a, b) => {
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return a.updated_at < b.updated_at;
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});
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}
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// Sort incoming singleton items by most recently updated first, then delete all the rest
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var sorted = singletonItems.sort((a, b) => {
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return a.updated_at < b.updated_at;
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})
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winningItem = sorted[0];
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// Delete everything but the first one
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toDelete = toDelete.concat(sorted.slice(1, sorted.length));
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@@ -88,9 +112,8 @@ class SingletonManager {
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this.$rootScope.sync();
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// Send remaining item to callback
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var singleton = sorted[0];
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singletonHandler.singleton = singleton;
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singletonHandler.resolutionCallback(singleton);
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singletonHandler.singleton = winningItem;
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singletonHandler.resolutionCallback(winningItem);
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} else if(allExtantItemsMatchingPredicate.length == 1) {
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if(!singletonHandler.singleton) {
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