Added searchHistory for adding a logged in users history trace. (More like a test function of the page)

seasoned_api/src/searchHistory/searchHistory.js

@@ -0,0 +1,39 @@
+const establishedDatabase = require('src/database/database');
+
+class SearchHistory {
+
+  constructor(database) {
+    this.database = database || establishedDatabase;
+    this.queries = {
+      'create': 'insert into search_history (search_query, user_name) values (?, ?)',
+      'read': 'select search_query from search_history where user_name = ? order by id desc',
+    };
+  }
+
+  /**
+   * Retrive a search queries for a user from the database.
+   * @param {User} user existing user
+   * @returns {Promise}
+   */
+  read(user) {
+    return this.database.all(this.queries.read, user.username)
+      .then(rows => rows.map(row => row.search_query));
+  }
+
+  /**
+   * Creates a new search entry in the database.
+   * @param {User} user a new user
+   * @param {String} searchQuery the query the user searched for
+   * @returns {Promise}
+   */
+  create(user, searchQuery) {
+    return this.database.run(this.queries.create, [searchQuery, user.username]).catch((error) => {
+      if (error.message.includes('FOREIGN')) {
+        throw new Error('Could not create search history.');
+      }
+    });
+  }
+
+}
+
+module.exports = SearchHistory;