Refactor POST handling.

- Split into admin and user handlers, each admin page gets its own file now
- Enforce role access once for admin POST requests
- Automatically load POST logic for admin-based requests based on the referring page, otherwise automatically load all user request logic
- Add support for using custom POST handlers

post/admin/admin_document_template.php

@@ -0,0 +1,28 @@
+<?php
+
+// Doc Templates
+
+// Import shared code from user-side docs as we reuse functions
+require_once 'post/user/document.php';
+
+if (isset($_POST['add_document_template'])) {
+
+    $client_id = intval($_POST['client_id']);
+    $name = sanitizeInput($_POST['name']);
+    $description = sanitizeInput($_POST['description']);
+    $content = mysqli_real_escape_string($mysqli,$_POST['content']);
+    $content_raw = sanitizeInput($_POST['name'] . " " . str_replace("<", " <", $_POST['content']));
+    // Content Raw is used for FULL INDEX searching. Adding a space before HTML tags to allow spaces between newlines, bulletpoints, etc. for searching.
+
+    // Document add query
+    $add_document = mysqli_query($mysqli,"INSERT INTO documents SET document_name = '$name', document_description = '$description', document_content = '$content', document_content_raw = '$content_raw', document_template = 1, document_folder_id = 0, document_created_by = $session_user_id, document_client_id = 0");
+    $document_id = mysqli_insert_id($mysqli);
+
+    // Logging
+    mysqli_query($mysqli,"INSERT INTO logs SET log_type = 'Document Template', log_action = 'Create', log_description = '$session_name created document template $name', log_ip = '$session_ip', log_user_agent = '$session_user_agent', log_client_id = $client_id, log_user_id = $session_user_id, log_entity_id = $document_id");
+
+    $_SESSION['alert_message'] = "Document template <strong>$name</strong> created";
+
+    header("Location: " . $_SERVER["HTTP_REFERER"]);
+
+}