Adds email helper for sending emails

app/helpers/email_helper.php

@@ -0,0 +1,60 @@
+<?php
+
+/**
+ * Email Template Helper
+ *
+ * Provides functions to render email templates with variable substitution
+ */
+
+/**
+ * Render email template with variables
+ *
+ * @param string $templateName Template filename (without extension)
+ * @param array $variables Variables to substitute
+ * @return string Rendered template content
+ */
+function renderEmailTemplate($templateName, $variables = []) {
+    $templateFile = __DIR__ . '/../templates/' . $templateName . '.txt';
+
+    if (!file_exists($templateFile)) {
+        throw new RuntimeException("Email template '$templateName' not found");
+    }
+
+    $content = file_get_contents($templateFile);
+
+    // Replace {{variable}} placeholders
+    foreach ($variables as $key => $value) {
+        $content = str_replace('{{' . $key . '}}', $value, $content);
+    }
+
+    return $content;
+}
+
+/**
+ * Send email using template
+ *
+ * @param string $to Recipient email
+ * @param string $subject Email subject
+ * @param string $templateName Template name
+ * @param array $variables Template variables
+ * @param array $config Application config
+ * @param array $additionalHeaders Additional email headers
+ * @return bool Success status
+ */
+function sendTemplateEmail($to, $subject, $templateName, $variables, $config, $additionalHeaders = []) {
+    try {
+        $message = renderEmailTemplate($templateName, $variables);
+
+        $fromDomain = $config['domain'] ?? ($_SERVER['HTTP_HOST'] ?? 'totalmeet.local');
+        $headers = array_merge([
+            'From: noreply@' . $fromDomain,
+            'X-Mailer: PHP/' . phpversion(),
+            'Content-Type: text/plain; charset=UTF-8'
+        ], $additionalHeaders);
+
+        return mail($to, $subject, $message, implode("\r\n", $headers));
+    } catch (Exception $e) {
+        error_log("Failed to send template email: " . $e->getMessage());
+        return false;
+    }
+}