Initial commit

api-wiaas/server/core/HeadersHelper.php

@@ -0,0 +1,41 @@
+<?php
+class HeadersHelper{
+    /**
+     * [getHeader description]
+     * @param  array[] $headers headers array ex: [column_name => column_alias]
+     * @param  string $type    type of the return it can have values sql or array
+     * @return strin|array return sql header if type is sql and array of headers if type is array
+     */
+    public function getHeader($headers = [], $type = 'array'){
+        $method = 'generate' . ucfirst($type) . 'Header';
+        return $this->{$method}($headers);
+    }
+
+    /**
+     * generates required header string for an sql (columns to be fetch from DB)
+     * @param  array $headers headers array
+     * @return string  sql columns string
+     */
+    private function generateSqlHeader($headers){
+        $formattedHeader = '';
+        foreach ($headers as $key => $value) {
+            $formattedHeader .= $key . ' AS ' . $value . ',';
+        }
+        return rtrim($formattedHeader, ',');
+    }
+
+    /**
+     * generates an  integer indexed array for the headers
+     * @param  array $headers headers array
+     * @return array         array of values for the header
+     */
+    private function generateArrayHeader($headers){
+        $formattedHeader = [];
+        foreach ($headers as $value) {
+            array_push($formattedHeader, $value);
+        }
+
+        return $formattedHeader;
+    }
+
+}