Added new data factory

public/services/data-factory.js

@@ -0,0 +1,103 @@
+/*
+ * Wazuh app - Wazuh data factory
+ * Copyright (C) 2018 Wazuh, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Find more information about this on the LICENSE file.
+ */
+
+export default class DataFactory {
+    constructor(httpClient, path){
+        this.httpClient = httpClient;
+        this.items   = [];
+        this.path    = path;
+        this.filters = [];
+        this.sortValue = false;   
+        this.sortDir   = false;     
+        this.sortValue = false;
+    }
+
+    addSorting(value) {
+        this.sortValue = value;
+        this.sortDir   = !this.sortDir;
+    }
+
+    removeFilters(){
+        this.filters = [];
+    }
+
+    serializeFilters(parameters) {
+        if(this.sortValue){
+            parameters.sort = this.sortDir ? '-' + this.sortValue : this.sortValue;
+        }
+
+        for(const filter of this.filters){
+            if (filter.value !== '') parameters[filter.name] = filter.value;
+        }
+    }
+
+    addFilter (filterName, value) {
+        this.filters = this.filters.filter(filter => filter.name !== filterName);
+
+        if(typeof value !== 'undefined'){
+            this.filters.push({
+                name:  filterName,
+                value: value
+            });
+        }
+    }
+    
+    async fetch(options = {}) {
+        try {     
+            this.items       = [];       
+            let offset       = 0;
+            const limit      = options.limit || 2000;
+            const parameters = { limit,offset };
+            
+            this.serializeFilters(parameters);
+            
+
+            const firstPage = await this.httpClient.request('GET', this.path, parameters)
+
+            this.items.push(...firstPage.data.data.items)
+            if(options.limit) {
+                if(this.path === '/agents') this.items = this.items.filter(item => item.id !== '000')
+                return this.items;   
+            }
+
+            const totalItems = firstPage.data.data.totalItems;
+            const remaining  = totalItems-firstPage.data.data.items.length;
+
+            const float_ops_number = remaining / limit;
+            const int_ops_number   = parseInt(float_ops_number);
+            const ops_number       = int_ops_number < float_ops_number ? int_ops_number + 1 : int_ops_number;     
+
+            const ops = []
+            for(let i=0; i<ops_number; i++){
+                parameters.offset += limit;
+
+                ops.push(this.httpClient.request('GET', this.path, parameters))
+            }
+            const remainingItems = await Promise.all(ops);
+            remainingItems.map(page => this.items.push(...page.data.data.items))
+            if(this.path === '/agents') this.items = this.items.filter(item => item.id !== '000')
+            return this.items;
+        
+        } catch (error) {
+            return Promise.reject(error);
+        }
+    }
+
+    reset() {
+        this.items   = [];
+        this.path    = path;
+        this.filters = [];
+        this.sortValue = false;   
+        this.sortDir   = false;     
+        this.sortValue = false;
+    }
+}