SEARCH-154 - Initial setup for skynet branch

demo/search.html

@@ -53,11 +53,11 @@
     </div>
     <br>
     <div>
-        <label for="senderId">SenderId:</label><input id="senderId" size=20>
+        <label for="senderId">SenderId:</label><input id="senderId" placeholder='["abc", "123"]'>
     </div>
     <br>
     <div>
-        <label for="threadId">ThreadId:</label><input id="threadId" size=20>
+        <label for="threadId">ThreadId:</label><input id="threadId" placeholder='["abc", "123"]'>
     </div>
     <br>
     <div>
@@ -67,6 +67,7 @@
     <div>
         <label for="var1">var1:</label><input id="var1" type="number" value="0" size=5>
     </div>
+    <br>
     <div>
         <label for="realTimeIndexing">Real Time Indexing:</label><input placeholder="Pass array of messages:"
                                                                         id="realTimeIndexing">
@@ -80,19 +81,23 @@
     </div>
     <br>
     <div>
-        <p>Results:</p>
-        <p id="results"></p>
-        <table id="table" class="hidden" style="width:100%">
-            <tr>
-                <th>ThreadId</th>
-                <th>SenderId</th>
-                <th>Text</th>
-            </tr>
-        </table>
-        <br>
+        <label for="batchNumber">Get Latest Message Timestamp</label>
+        <button id='getLatestMessageTimestamp'>Click</button>
+        <div>
+            <p>Results:</p>
+            <p id="results"></p>
+            <table id="table" class="hidden" style="width:100%">
+                <tr>
+                    <th>ThreadId</th>
+                    <th>SenderId</th>
+                    <th>Text</th>
+                </tr>
+            </table>
+            <br>
+        </div>
     </div>
 </div>
-</body>
+
 <script>
     var search = new ssf.Search("testUser1");
     var buttonEl = document.getElementById('search');
@@ -111,6 +116,7 @@
     var sendMessage = document.getElementById('sendMessage');
     var realTimeIndexing = document.getElementById('realTimeIndexing');
     var batchNumber = document.getElementById('batchNumber');
+    var timestamp = document.getElementById('getLatestMessageTimestamp');
 
 
     buttonIndex.addEventListener('click', function () {
@@ -134,45 +140,71 @@
         table.classList.remove('hidden');
         let startDate = new Date(startEl.value);
         let endDate = new Date(endEl.value);
-        search.searchQuery(queryEl.value, senderIdEl.value, threadIdEl.value, null, startDate, endDate, limitEl.value, offsetEl.value, 0).then(function (result) {
-            out = result;
-            var th = document.createElement('tr');
-            var th1 = document.createElement('td');
-            th1.innerText = "ThreadId";
-            var th2 = document.createElement('td');
-            th2.innerText = 'SenderId';
-            var th3 = document.createElement('td');
-            th3.innerText = 'Text';
-            th.appendChild(th1);
-            th.appendChild(th2);
-            th.appendChild(th3);
-            table.appendChild(th);
-            out.messages.forEach(function (msg) {
-                var tr = document.createElement('tr');
-                var t1 = document.createElement('td');
-                t1.innerText = msg.threadId;
-                var t2 = document.createElement('td');
-                t2.innerText = msg.senderId;
-                var t3 = document.createElement('td');
-                t3.innerText = msg.text;
-                tr.appendChild(t1);
-                tr.appendChild(t2);
-                tr.appendChild(t3);
-                table.appendChild(tr);
-            });
+        let threadIdObj, senderIdObj;
+        if (senderIdEl.value && senderIdEl.value !== "" && senderIdEl.value.replace(/ /g, "").length > 0) {
+            senderIdObj = JSON.parse(senderIdEl.value);
+        }
+        if (threadIdEl.value && threadIdEl.value !== "" && threadIdEl.value.replace(/ /g, "").length > 0) {
+            threadIdObj = JSON.parse(threadIdEl.value);
+        }
+        search.searchQuery(queryEl.value, senderIdObj, threadIdObj, null, startDate, endDate, limitEl.value, offsetEl.value, 0).then(function (result) {
+            if (result.messages.length < 1) {
+                resultsEl.innerHTML = "No results found"
+            }
+            if (result.messages.length > 0) {
+                out = result;
+                var th = document.createElement('tr');
+                var th1 = document.createElement('td');
+                th1.innerText = "ThreadId";
+                var th2 = document.createElement('td');
+                th2.innerText = 'SenderId';
+                var th3 = document.createElement('td');
+                th3.innerText = 'Text';
+                th.appendChild(th1);
+                th.appendChild(th2);
+                th.appendChild(th3);
+                table.appendChild(th);
+                out.messages.forEach(function (msg) {
+                    var tr = document.createElement('tr');
+                    var t1 = document.createElement('td');
+                    t1.innerText = msg.threadId;
+                    var t2 = document.createElement('td');
+                    t2.innerText = msg.senderId;
+                    var t3 = document.createElement('td');
+                    t3.innerText = msg.text;
+                    tr.appendChild(t1);
+                    tr.appendChild(t2);
+                    tr.appendChild(t3);
+                    table.appendChild(tr);
+                });
+            }
         }).catch(function (err) {
-            resultsEl.innerHTML = err;
+            resultsEl.innerHTML = 'Error: ' + err;
         });
+
     });
 
     sendMessage.addEventListener('click', function () {
-        let message = JSON.parse(realTimeIndexing.value);
-        search.realTimeIndexing(message);
+        if (realTimeIndexing.value !== "") {
+            let message = JSON.parse(realTimeIndexing.value);
+            resultsEl.innerHTML = search.realTimeIndexing(message);
+        } else {
+            resultsEl.innerHTML = "Please check the entered value"
+        }
     });
 
     merge.addEventListener('click', function () {
         search.mergeIndexBatches();
-        search.getLatestMessageTimestamp();
-    })
+        resultsEl.innerHTML = 'Merged';
+    });
+
+    timestamp.addEventListener('click', function () {
+        search.getLatestMessageTimestamp().then(function (res) {
+            resultsEl.innerHTML = res;
+        }).catch(function (err) {
+            resultsEl.innerHTML = 'Error: ' + err;
+        });
+    });
 </script>
-</html>
+</body>
+</html>

js/search/search.js

@@ -2,7 +2,6 @@
 
 const fs = require('fs');
 const randomString = require('randomstring');
-
 const electron = require('electron');
 const childProcess = require('child_process');
 const app = electron.app;
@@ -26,9 +25,7 @@ const SEARCH_PERIOD_SUBTRACTOR = 3 * 31 * 24 * 60 * 60 * 1000;//3 months
 const MINIMUM_DATE = '0000000000000';
 const MAXIMUM_DATE = '9999999999999';
 const INDEX_VERSION = 'v1';
-const INTERNATIONAL_CHARACTER_CODES = '\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0370-\u0374\u0376\u0377\u037A-\u037D\u037F\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u048A-\u052F\u0531-\u0556\u0559\u0561-\u0587\u05D0-\u05EA\u05F0-\u05F2\u0620-\u064A\u066E\u066F\u0671-\u06D3\u06D5\u06E5\u06E6\u06EE\u06EF\u06FA-\u06FC\u06FF\u0710\u0712-\u072F\u074D-\u07A5\u07B1\u07CA-\u07EA\u07F4\u07F5\u07FA\u0800-\u0815\u081A\u0824\u0828\u0840-\u0858\u08A0-\u08B2\u0904-\u0939\u093D\u0950\u0958-\u0961\u0971-\u0980\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BD\u09CE\u09DC\u09DD\u09DF-\u09E1\u09F0\u09F1\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A59-\u0A5C\u0A5E\u0A72-\u0A74\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABD\u0AD0\u0AE0\u0AE1\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3D\u0B5C\u0B5D\u0B5F-\u0B61\u0B71\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BD0\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C39\u0C3D\u0C58\u0C59\u0C60\u0C61\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBD\u0CDE\u0CE0\u0CE1\u0CF1\u0CF2\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D\u0D4E\u0D60\u0D61\u0D7A-\u0D7F\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0E01-\u0E30\u0E32\u0E33\u0E40-\u0E46\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB0\u0EB2\u0EB3\u0EBD\u0EC0-\u0EC4\u0EC6\u0EDC-\u0EDF\u0F00\u0F40-\u0F47\u0F49-\u0F6C\u0F88-\u0F8C\u1000-\u102A\u103F\u1050-\u1055\u105A-\u105D\u1061\u1065\u1066\u106E-\u1070\u1075-\u1081\u108E\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u1380-\u138F\u13A0-\u13F4\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16F1-\u16F8\u1700-\u170C\u170E-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176C\u176E-\u1770\u1780-\u17B3\u17D7\u17DC\u1820-\u1877\u1880-\u18A8\u18AA\u18B0-\u18F5\u1900-\u191E\u1950-\u196D\u1970-\u1974\u1980-\u19AB\u19C1-\u19C7\u1A00-\u1A16\u1A20-\u1A54\u1AA7\u1B05-\u1B33\u1B45-\u1B4B\u1B83-\u1BA0\u1BAE\u1BAF\u1BBA-\u1BE5\u1C00-\u1C23\u1C4D-\u1C4F\u1C5A-\u1C7D\u1CE9-\u1CEC\u1CEE-\u1CF1\u1CF5\u1CF6\u1D00-\u1DBF\u1E00-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u2071\u207F\u2090-\u209C\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2183\u2184\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CEE\u2CF2\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D80-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2E2F\u3005\u3006\u3031-\u3035\u303B\u303C\u3041-\u3096\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FCC\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA61F\uA62A\uA62B\uA640-\uA66E\uA67F-\uA69D\uA6A0-\uA6E5\uA717-\uA71F\uA722-\uA788\uA78B-\uA78E\uA790-\uA7AD\uA7B0\uA7B1\uA7F7-\uA801\uA803-\uA805\uA807-\uA80A\uA80C-\uA822\uA840-\uA873\uA882-\uA8B3\uA8F2-\uA8F7\uA8FB\uA90A-\uA925\uA930-\uA946\uA960-\uA97C\uA984-\uA9B2\uA9CF\uA9E0-\uA9E4\uA9E6-\uA9EF\uA9FA-\uA9FE\uAA00-\uAA28\uAA40-\uAA42\uAA44-\uAA4B\uAA60-\uAA76\uAA7A\uAA7E-\uAAAF\uAAB1\uAAB5\uAAB6\uAAB9-\uAABD\uAAC0\uAAC2\uAADB-\uAADD\uAAE0-\uAAEA\uAAF2-\uAAF4\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uAB30-\uAB5A\uAB5C-\uAB5F\uAB64\uAB65\uABC0-\uABE2\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D\uFB1F-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE70-\uFE74\uFE76-\uFEFC\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC';
-const INVALID_CHARACTERS_REGEX = new RegExp('[^#$_a-z0-9' + INTERNATIONAL_CHARACTER_CODES + ']+', 'gmi');
-const REPLACE_COMMAS = new RegExp(',', 'g');
+
 const SORT_BY_SCORE = 0;
 const BATCH_RANDOM_INDEX_PATH_LENGTH = 20;
 
@@ -37,9 +34,7 @@ const winArchPath = process.arch === 'ia32' ? 'library/indexvalidator-x86.exe' :
 const rootPath = isMac ? 'library/indexvalidator.exec' : winArchPath;
 const productionPath = path.join(execPath, isMac ? '..' : '', rootPath);
 const devPath = path.join(__dirname, '..', '..', rootPath);
-const libraryPath = isDevEnv ? devPath : productionPath;
-
-let INDEX_VALIDATOR = libraryPath;
+const INDEX_VALIDATOR = isDevEnv ? devPath : productionPath;
 
 /**
  * This search class communicates with the SymphonySearchEngine C library via node-ffi.
@@ -49,7 +44,7 @@ class Search {
 
     /**
      * Constructor for the SymphonySearchEngine library
-     * @param userId
+     * @param userId (for the index folder name)
      */
     constructor(userId) {
         this.isInitialized = false;
@@ -107,11 +102,18 @@ class Search {
      */
     indexBatch(messages) {
         return new Promise((resolve, reject) => {
-            if (!this.isInitialized) {
-                reject()
+            if (!Array.isArray(messages)) {
+                reject('Messages should be an array');
+                return;
             }
+
+            if (!this.isInitialized) {
+                reject("Not initialized");
+                return;
+            }
+
             let indexId = randomString.generate(BATCH_RANDOM_INDEX_PATH_LENGTH);
-            libSymphonySearch.symSECreatePartialIndexAsync(this.batchIndex, indexId, JSON.stringify(messages), function (err, res) {
+            libSymphonySearch.symSECreatePartialIndexAsync(this.batchIndex, indexId, JSON.stringify(messages), (err, res) => {
                 if (err) reject(err);
                 resolve(res);
             });
@@ -123,10 +125,9 @@ class Search {
      * created from indexBatch()
      */
     mergeIndexBatches() {
-        let self = this;
-        libSymphonySearch.symSEMergePartialIndexAsync(this.indexFolderName, this.batchIndex, function (err) {
+        libSymphonySearch.symSEMergePartialIndexAsync(this.indexFolderName, this.batchIndex, (err) => {
             if (err) throw err;
-            libSymphonySearch.symSERemoveFolder(self.batchIndex)
+            libSymphonySearch.symSERemoveFolder(this.batchIndex)
         });
     }
 
@@ -136,7 +137,11 @@ class Search {
      * @param message
      */
     realTimeIndexing(message) {
-        libSymphonySearch.symSEIndexRealTime(this.realTimeIndex, JSON.stringify(message));
+        if (!Array.isArray(message)) {
+            return new Error('Messages should be an array');
+        }
+        let result = libSymphonySearch.symSEIndexRealTime(this.realTimeIndex, JSON.stringify(message));
+        return result === 0 ? "Successful" : result
     }
 
     /**
@@ -146,18 +151,17 @@ class Search {
      * @returns {Promise}
      */
     readJson(batch) {
-        let self = this;
         return new Promise((resolve, reject) => {
             let dirPath = path.join(execPath, isMac ? '..' : '', 'msgsjson', batch);
             let messageFolderPath = isDevEnv ? path.join('./msgsjson', batch) : dirPath;
             let files = fs.readdirSync(messageFolderPath);
-            self.messageData = [];
-            files.forEach(function (file) {
+            this.messageData = [];
+            files.forEach((file) => {
                 let tempPath = path.join(messageFolderPath, file);
                 let data = fs.readFileSync(tempPath, "utf8");
                 if (data) {
-                    self.messageData.push(JSON.parse(data));
-                    resolve(self.messageData);
+                    this.messageData.push(JSON.parse(data));
+                    resolve(this.messageData);
                 } else {
                     reject("err on reading files")
                 }
@@ -166,7 +170,7 @@ class Search {
     }
 
     /**
-     * This is the magic part of this library
+     * This returns the search results
      * which returns a char *
      * @param query
      * @param senderIds
@@ -187,13 +191,21 @@ class Search {
         let _sortOrder = sortOrder;
 
         return new Promise((resolve, reject) => {
+            if (!fs.existsSync(this.indexFolderName) && !fs.existsSync(this.realTimeIndex)) {
+                reject('Index folder does not exist.');
+                return;
+            }
+
             if (!this.isInitialized) {
-                reject(-1);
+                reject("Not initialized");
+                return;
             }
 
             let q = Search.constructQuery(query, senderIds, threadIds);
+
             if (q === undefined) {
-                reject(-2);
+                reject("Search query error");
+                return;
             }
 
             let sd = new Date().getTime() - SEARCH_PERIOD_SUBTRACTOR;
@@ -232,10 +244,19 @@ class Search {
         });
     }
 
+    /**
+     * returns the latest message timestamp
+     * from the indexed data
+     * @returns {Promise}
+     */
     getLatestMessageTimestamp() {
-        let self = this;
-        return new Promise(function (resolve, reject) {
-            libSymphonySearch.symSEGetLastMessageTimestampAsync(self.indexFolderName, function (err, res) {
+        return new Promise((resolve, reject) => {
+            if (!fs.existsSync(this.indexFolderName)) {
+                reject('Index folder does not exist.');
+                return;
+            }
+
+            libSymphonySearch.symSEGetLastMessageTimestampAsync(this.indexFolderName, (err, res) => {
                 if (err) {
                     reject(new Error(err));
                 }
@@ -252,57 +273,94 @@ class Search {
 
     /**
      * This the query constructor
-     * for the query search function
-     * @param query
+     * for the search function
+     * @param searchQuery
      * @param senderId
      * @param threadId
      * @returns {string}
      */
-    static constructQuery(query, senderId, threadId) {
+    static constructQuery(searchQuery, senderId, threadId) {
+
+        let query = "";
+        if(searchQuery !== undefined) {
+            query = searchQuery.trim().toLowerCase(); //to prevent injection of AND and ORs
+        }
         let q = "";
-        let tokens = query.toLowerCase()
-            .trim()
-            .replace(INVALID_CHARACTERS_REGEX, ' ')
-            .split(' ');
+        let hashTags = Search.getHashTags(query);
+        let hashCashTagQuery = "";
 
-        let hasToken = false;
-
-        if (/"/.test(query)) {
-            q += (query.match(/"(.*?)"/g)).toString().replace(REPLACE_COMMAS, ' ');
-            q += " ";
+        if(hashTags.length > 0) {
+            hashCashTagQuery = " OR tags:(";
+            hashTags.forEach((item) => {
+                hashCashTagQuery = hashCashTagQuery + "\"" + item + "\" "
+            });
+            hashCashTagQuery += ")";
         }
 
-        let hashCashTagQuery = "(";
-        tokens.forEach((item, i) => {
-            if (i > 0 && (item.startsWith('#') || item.startsWith('$')) && hasToken) {
-                hashCashTagQuery += " OR ";
+        if (query.length > 0 ) {
+            q = "(text:(" + query + ")" + hashCashTagQuery + ")";
+        }
+
+        q = Search.appendFilterQuery(q, "senderId", senderId);
+        q = Search.appendFilterQuery(q, "threadId", threadId);
+
+        if(q === "") {
+            q = undefined; //will be handled in the search function
+        }
+        return q;
+    }
+
+    /**
+     * appending the senderId
+     * and threadId for the query
+     * @param query
+     * @param fieldName
+     * @param valueArray
+     * @returns {string}
+     */
+    static appendFilterQuery(query, fieldName, valueArray) {
+        let q = "";
+        if (valueArray && valueArray.length > 0 ) {
+
+            q += "(" + fieldName +":(";
+            valueArray.forEach((item)=>{
+                q+= "\"" + item + "\" ";
+            });
+            q += "))";
+            if(query.length > 0 ) {
+                q = query + " AND " + q;
             }
-            if (item.startsWith('#') || item.startsWith('$')) {
-                hashCashTagQuery += ("tags:\"" + item + "\"");
-                hasToken = true;
-            } else {
-                q += item + " ";
-            }
-        });
-        hashCashTagQuery += ")";
 
-        if (q.replace(/ /g, "").length > 0 && hasToken) {
-            q += " OR ";
-        }
-        if (tokens.length > 0 && hasToken) {
-            q += hashCashTagQuery;
-        }
-
-        if (senderId && senderId !== "" && senderId.replace(/ /g, "").length > 0) {
-            q += ` AND (senderId: ${senderId})`;
-        }
-        if (threadId && threadId !== "" && threadId.replace(/ /g, "").length > 0) {
-            q += ` AND (threadId: ${threadId})`;
+        } else {
+            q = query;
         }
 
         return q;
     }
 
+    //hashtags can have any characters(before the latest release it was
+    //not like this). So the only regex is splitting the search query based on
+    //whitespaces
+    /**
+     * return the hash cash
+     * tags from the query
+     * @param query
+     * @returns {Array}
+     */
+    static getHashTags(query) {
+        let hashTags = [];
+        let tokens = query.toLowerCase()
+            .trim()
+            .replace(/\s\s+/g, ' ')
+            .split(' ').filter((el) => {return el.length !== 0});
+        tokens.forEach((item) => {
+            if (item.startsWith('#') || item.startsWith('$')) {
+                hashTags.push(item);
+            }
+        });
+        return hashTags;
+    }
+
     /**
      * Validate the index folder exist or not
      * @param file
@@ -318,7 +376,7 @@ class Search {
             }
             return new Error('Unable validate index folder')
         } catch (err) {
-            throw (err);
+            throw new Error(err);
         }
     }
 }
@@ -329,4 +387,4 @@ class Search {
  */
 module.exports = {
     Search: Search
-};
+};

js/search/searchLibrary.js

@@ -2,7 +2,6 @@
 
 const ffi = require('ffi');
 const ref = require('ref');
-
 const electron = require('electron');
 const app = electron.app;
 const path = require('path');