Revert "renamed client to src"

This reverts commit c28736bd01.

client/homebrew/utils/versionHistory.js

@@ -0,0 +1,120 @@
+import { initCustomStore } from './customIDBStore.js';
+
+export const HISTORY_PREFIX = 'HOMEBREWERY-HISTORY';
+export const HISTORY_SLOTS = 5;
+
+// History values in minutes
+const HISTORY_SAVE_DELAYS = {
+	'0' : 0,
+	'1' : 2,
+	'2' : 10,
+	'3' : 60,
+	'4' : 12 * 60,
+	'5' : 2 * 24 * 60
+};
+// const HISTORY_SAVE_DELAYS = {
+// 	'0' : 0,
+// 	'1' : 1,
+// 	'2' : 2,
+// 	'3' : 3,
+// 	'4' : 4,
+// 	'5' : 5
+// };
+
+const GARBAGE_COLLECT_DELAY = 28 * 24 * 60;
+// const GARBAGE_COLLECT_DELAY = 10;
+
+
+const HB_DB = 'HOMEBREWERY-DB';
+const HB_STORE = 'HISTORY';
+
+const IDB = initCustomStore(HB_DB, HB_STORE);
+
+function getKeyBySlot(brew, slot){
+	// Return a string representing the key for this brew and history slot
+	return `${HISTORY_PREFIX}-${brew.shareId}-${slot}`;
+};
+
+function parseBrewForStorage(brew, slot = 0) {
+	// Strip out unneeded object properties
+	// Returns an array of [ key, brew ]
+	const archiveBrew = {
+		title    : brew.title,
+		text     : brew.text,
+		style    : brew.style,
+		snippets : brew.snippets,
+		version  : brew.version,
+		shareId  : brew.shareId,
+		savedAt  : brew?.savedAt || new Date(),
+		expireAt : new Date()
+	};
+
+	archiveBrew.expireAt.setMinutes(archiveBrew.expireAt.getMinutes() + HISTORY_SAVE_DELAYS[slot]);
+
+	const key = getKeyBySlot(brew, slot);
+
+	return [key, archiveBrew];
+}
+
+export async function loadHistory(brew){
+	const DEFAULT_HISTORY_ITEM = { expireAt: '2000-01-01T00:00:00.000Z', shareId: brew.shareId, noData: true };
+
+	const historyKeys = [];
+
+	// Create array of all history keys
+	for (let i = 1; i <= HISTORY_SLOTS; i++){
+		historyKeys.push(getKeyBySlot(brew, i));
+	};
+
+	// Load all keys from IDB at once
+	const dataArray = await IDB.getMany(historyKeys);
+	return dataArray.map((data)=>{ return data ?? DEFAULT_HISTORY_ITEM; });
+}
+
+export async function updateHistory(brew) {
+	const history = await loadHistory(brew);
+
+	// Walk each version position
+	for (let slot = HISTORY_SLOTS - 1; slot >= 0; slot--){
+		const storedVersion = history[slot];
+
+		// If slot has expired, update all lower slots and break
+		if(new Date() >= new Date(storedVersion.expireAt)){
+
+			// Create array of arrays : [ [key1, value1], [key2, value2], ..., [keyN, valueN] ]
+			// to pass to IDB.setMany
+			const historyUpdate = [];
+
+			for (let updateSlot = slot; updateSlot > 0; updateSlot--){
+				// Move data from updateSlot to updateSlot + 1
+				if(!history[updateSlot - 1]?.noData) {
+					historyUpdate.push(parseBrewForStorage(history[updateSlot - 1], updateSlot + 1));
+				}
+			};
+
+			// Update the most recent brew
+			historyUpdate.push(parseBrewForStorage(brew, 1));
+
+			await IDB.setMany(historyUpdate);
+
+			// Break out of data checks because we found an expired value
+			break;
+		}
+	};
+};
+
+export async function versionHistoryGarbageCollection(){
+	const entries = await IDB.entries();
+
+	const expiredKeys = [];
+	for (const [key, value] of entries){
+		const expireAt = new Date(value.savedAt);
+		expireAt.setMinutes(expireAt.getMinutes() + GARBAGE_COLLECT_DELAY);
+		if(new Date() > expireAt){
+			expiredKeys.push(key);
+		};
+	};
+	if(expiredKeys.length > 0){
+		await IDB.delMany(expiredKeys);
+	}
+};