Refactored and consolidated DatabaseConnection (simplified PDO wrapper)

.gitignore

@@ -1,3 +1,6 @@
 /files/
 /plugins/
+/*.css
 /*.db
+/*.js
+/*.txt

app.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+# https://stackoverflow.com/a/1482133
+SCRIPT_DIR="$(dirname -- "$(readlink -f -- "$0";)";)"
+cd "${SCRIPT_DIR}"
+
+# Allow port setting via first argument:
+PORT=8000
+if [[ ! "$1" == "" ]]
+then
+    PORT="$1"
+fi
+
+# Handle multiple simultaneous requests in Linux only:
+export PHP_CLI_SERVER_WORKERS=4
+
+php -S 0.0.0.0:$PORT index.php --enable-mbstring

lib/DatabaseConnection.php

@@ -4,6 +4,8 @@
         private $strConnection;
         private $pdo;
 
+        public $strEngine;
+
         public function __construct($strConnection, $strUsername = null, $strPassword = null)
         {
             $this->strConnection = $strConnection;
@@ -17,6 +19,14 @@
             $this->pdo->setAttribute(
                 PDO::ATTR_ERRMODE,
                 PDO::ERRMODE_EXCEPTION);
+
+            // Fetch the engine being used:
+            preg_match(
+                "/^([a-z]{1,})\:/",
+                $strConnection,
+                $varMatches);
+            
+            $this->strEngine = $varMatches[1];
         }
 
         private static function flatten(...$args)
@@ -46,17 +56,56 @@
 
         public function query($input)
         {
-            $varArgs = self::flatten(func_get_args());
+            $varArgs = func_get_args();
+
+            // Support for single argument with multiple queries:
+            if (count($varArgs) == 1 && is_array($varArgs[0]))
+            {
+                $varQueries = $varArgs[0];
+                $varOutputs = [];
+
+                while (count($varQueries) > 0)
+                    array_push($varOutputs, $this->query(array_shift($varQueries)));
+
+                return $varOutputs;
+            }
+
+            $varArgs = self::flatten($varArgs);
 
             if (count($varArgs) < 1)
                 throw new Exception("query takes at least one argument, the query!");
 
             $strQuery = array_shift($varArgs);
-            $strQuery = file_exists("db/{$strQuery}")?
-                file_get_contents("db/{$strQuery}") :
-                $strQuery;
 
-            if (preg_match("/^sqlsrv/", $this->strConnection))
+            // Support for plugins' queries in db directory:
+            $varQueryPaths = [];
+
+            if (preg_match("/\.sql$/", $strQuery))
+            {
+                if (is_dir("plugins"))
+                    foreach (scandir("plugins") as $strPluginName)
+                    {
+                        if ($strPluginName == ".")  continue;
+                        if ($strPluginName == "..") continue;
+
+                        array_push($varQueryPaths, "plugins/{$strPluginName}/db/{$strQuery}");
+                        array_push($varQueryPaths, "plugins/{$strPluginName}/db/{$this->strEngine}/{$strQuery}");
+                    }
+
+                array_push($varQueryPaths, "db/{$strQuery}");
+            }
+
+            while (count($varQueryPaths) > 0)
+            {
+                $strTryPath = array_shift($varQueryPaths);
+                if (is_file($strTryPath))
+                {
+                    $strQuery = file_get_contents($strTryPath);
+                    break;
+                }
+            }
+
+            if (preg_match("/^sqlsrv/", $this->strEngine))
                 $strQuery = "set nocount on; {$strQuery}";
 
             $varStatement = $this->pdo->prepare($strQuery);
@@ -69,7 +118,7 @@
             $varOutput  = array();
 
             // Engines that do not support multiple rowsets:
-            if (preg_match("/^(sqlite)/", $this->strConnection))
+            if (preg_match("/^(sqlite)/", $this->strEngine))
             {
                 while ($varRow = $varStatement->fetch())
                 {

php-webapp-framework.sh

@@ -1,8 +0,0 @@
-#!/bin/bash
-
-# https://stackoverflow.com/a/1482133
-SCRIPT_DIR="$(dirname -- "$(readlink -f -- "$0";)";)"
-cd "${SCRIPT_DIR}"
-
-export PHP_CLI_SERVER_WORKERS=4
-php -S 0.0.0.0:$1 index.php --enable-mbstring