repair reading from db

That was tiring

scripts/secretariat.js

@@ -2,39 +2,155 @@
 Manage the local cache.
 */
 
-/* Read all storeed data in the browser cache.
+import logging from "/gui/scripts/logging.JS";
 
-@param {string} prefname the preference name
+/* Read all stored data in the browser cache.
-@param {int} cloud determine cloud reading, which is otherwise set to automatic (0)
+
-@return {dictionary} the preferences
+@param {array} DATA_NAME the data name
+@param {int} CLOUD determine cloud reading, which is otherwise set to automatic (0)
+@param {string} PARAMETER_CHECK Determine which parameter to check via regular expressions.
+@return {object} the data
 */
-export function read(prefname, cloud = 0) {
+export async function read(DATA_NAME, CLOUD = 0, PARAMETER_TEST = null) {
 
 	// Initialize the selected pref data.
-	let pref_data;
+	let DATA = {}, DATA_ALL = {}, DATA_RETURNED = {};
 
-	if (prefname) {
+	// Convert the entered prefname to an array if it is not one.
-		// Retrieve the data.
+	if (!(typeof DATA_NAME).includes(`object`)) {
-		let data_readings = {'sync': null, 'local': null}
+		// Avoid null
-		chrome.storage.sync.get(null, (database) => {data_readings[`sync`] = database[prefname]});
+		if (((typeof DATA_NAME).includes(`str`)) ? DATA_NAME.trim() : DATA_NAME) {
-		chrome.storage.sync.get(null, (database) => {data_readings[`local`] = database[prefname]});
+			// Syntax of splitting is by commas.
+			DATA_NAME = (String(DATA_NAME).trim()).split(",");
+		}
+	};
 
-		if ((cloud == 0 && data_readings[`sync`]) || cloud == 1) {
+	/*
-			pref_data = data_readings[`sync`];
+		Find the data now.
+
+		@param {number} SOURCE the data source
+	*/
+	function read_database(SOURCE = -1) {
+		let data = {};
+		let data_returned;
+
+		async function read_database_local() {
+			return new Promise((resolve, reject) => {
+				chrome.storage.local.get(null, function(result) {
+					if (chrome.runtime.lastError) {
+						// Something went wrong
+						reject(new Error(chrome.runtime.lastError));
 					} else {
-			pref_data = data_readings[`local`];
+						// If the key exists, return the value
+						resolve(result);
+					}
+				});
+			});
+		};
+
+		async function read_database_sync() {
+			return new Promise((resolve, reject) => {
+				chrome.storage.sync.get(null, function(result) {
+					if (chrome.runtime.lastError) {
+						// Something went wrong
+						reject(new Error(chrome.runtime.lastError));
+					} else {
+						// If the key exists, return the value
+						resolve(result);
+					}
+				});
+			});
+		}
+
+		// Return the data.
+		if (SOURCE > 0) {
+			data_returned = read_database_sync();
+		} else {
+			data_returned = read_database_local();
+		}
+
+		return(data_returned);
+	};
+
+	/* Recursively find through each data, returning either that value or null when the object is not found.
+
+	@param {dictionary} DATA_ALL the data
+	@param {object} DATA_PATH the path of the data
+	@return {object} the data
+	*/
+	function find_data(DATA_ALL, DATA_PATH, PARAMETER_TEST) {
+		// Pull the data out.
+		let DATA_PATH_SELECTED = String(DATA_PATH.shift()).trim();
+		let DATA_SELECTED = DATA_ALL;
+
+		// Only run when the data is valid.
+		if (DATA_ALL) {
+			if (DATA_SELECTED) {
+				// Get the selected data.
+				DATA_SELECTED = DATA_ALL[DATA_PATH_SELECTED];
+
+				if (DATA_PATH.length > 0) {
+					// Recursively run to make use of the existing data.
+					DATA_SELECTED = find_data(DATA_SELECTED, DATA_PATH, PARAMETER_TEST);
+				}
+			} else if (PARAMETER_TEST && DATA_SELECTED) {
+				let QUALIFIED = false;
+
+				// The expected keys are "field" and "test value"
+				DATA_SELECTED_KEYS = Object.keys(DATA_SELECTED);
+				if (PARAMETER_TEST[`field`] && PARAMETER_TEST[`test value`]) {
+
+					// Perform a sequential search.
+					for (let DATA_SELECTED_KEY_INDEX = 0; ((DATA_SELECTED_KEY_INDEX < DATA_SELECTED_KEYS.length) || (!QUALIFIED)); DATA_SELECTED_KEY_INDEX++) {
+						PARAMETER_TEST[`value`] = DATA_SELECTED[DATA_SELECTED_KEYS[DATA_SELECTED_KEY_INDEX]][PARAMETER_TEST[`field`]]
+							if (PARAMETER_TEST[`value`]) {
+								QUALIFIED = (((new RegExp(String(PARAMETER_TEST[`value`])).test(PARAMETER_TEST[`test value`])) || (PARAMETER_TEST[`test value`].includes(PARAMETER_TEST[`value`]))));
+							};
+
+							if (QUALIFIED) {
+								DATA_SELECTED = DATA_SELECTED[DATA_SELECTED_KEYS[DATA_SELECTED_KEY_INDEX]];
+								break;
+							}
+					}
+
+					if (!QUALIFIED) {
+						DATA_SELECTED = null;
 					}
 				} else {
-		// You can get everything if you'd like.
+					// It is not valid, so do not return anything.
-		if (cloud > 0) {
+					DATA_SELECTED = null;
-			chrome.storage.sync.get(null, (database) => {pref_data = database});
+				}
-		} else {
+			}
-			chrome.storage.local.get(null, (database) => {pref_data = database;});
+		}
+
+		// Now return the data.
+		return (DATA_SELECTED);
+	}
+
+	// Read data from local and sync storage (asynchronous operations)
+	try {
+		if (CLOUD <= 0) {
+			[DATA_ALL[`local`]] = await Promise.all([read_database(-1)]);
 		};
+		if (CLOUD >= 0) {
+			[DATA_ALL[`sync`]] = await Promise.all([read_database(1)]);
+		};
+	} catch ({name, message}) {
+		logging.error(name, message);
 	};
 
+	// Let's get through everything and then determine which one has…
+	(Object.keys(DATA_ALL)).forEach((DATA_SOURCE) => {
+		if (DATA_ALL[DATA_SOURCE]) {
+			DATA[DATA_SOURCE] = (DATA_NAME) ? find_data(DATA_ALL[DATA_SOURCE], DATA_NAME, PARAMETER_TEST) : DATA_ALL[DATA_SOURCE];
+		}
+	});
 
-	return(pref_data);
+	// Now return the data.
+	DATA_RETURNED[`source`] = (CLOUD != 0) ? ((CLOUD > 0) ? `sync` : `local`) : (((DATA[`sync`]) ? (DATA[`sync`].length <= 0) : (DATA[`sync`])) ? `sync` : `local`)
+	DATA_RETURNED[`value`] = DATA[DATA_RETURNED[`source`]];
+
+	return(DATA_RETURNED[`value`]);
 }
 
 /* List the matching rule or memory for a particular domain.
@@ -112,7 +228,6 @@ export function specifics(WHERE, domain) {
 @param {int} CLOUD store in the cloud; otherwise set to automatic
 */
 export function write(PREFERENCE, SUBPREFERENCE, DATA, CLOUD = 0) {
-
 	let DATA_INJECTED = DATA;
 
 	if (SUBPREFERENCE) {
@@ -200,7 +315,6 @@ export function forget(preference, subpreference, CLOUD = 0) {
 @param {dictionary} data this build's managed data
 */
 export function init(data) {
-
 	let PREFERENCES_ALL = {};
 	PREFERENCES_ALL[`build`] = data;