refactoring, airtelmoney test

app/Library/AirtelMoneyMw/callback.php

@@ -0,0 +1,50 @@
+<?php
+/*
+Developer: David Kumwenda
+Contact: 0881161942 or 0996139030
+App: Mpamba 4 MSE
+Date: 30 August 2025
+Duration: 1 day dev work*/
+ 
+
+// Read raw POST data
+$rawData = file_get_contents("php://input");
+
+// Decode JSON
+$data = json_decode($rawData, true);
+
+// Basic logging (optional, useful for debugging)
+file_put_contents("logs/callback_log_".date('Ymd').'.txt', date("Y-m-d H:i:s") . " - " . $rawData . PHP_EOL, FILE_APPEND); exit(); 
+
+// Validate required fields
+if (isset($data["receipt_number"], $data["result_code"], $data["transaction_id"])) {
+    
+    $receiptNumber = $data["receipt_number"];
+    $resultCode = $data["result_code"];
+    $resultDescription = $data["result_description"] ?? "";
+    $resultTime = $data["result_time"] ?? date("Y-m-d H:i:s");
+    $transactionId = $data["transaction_id"];
+    $success = $data["success"] ?? false;
+
+    // Example: Save to database
+    // (Replace this with your actual DB insert/update code)
+    /*
+    $conn = mysqli_connect("localhost", "user", "password", "dbname");
+    $stmt = mysqli_prepare($conn, "INSERT INTO payments (transaction_id, receipt_number, result_code, result_description, result_time, success) VALUES (?, ?, ?, ?, ?, ?)");
+    mysqli_stmt_bind_param($stmt, "ssissi", $transactionId, $receiptNumber, $resultCode, $resultDescription, $resultTime, $success);
+    mysqli_stmt_execute($stmt);
+    mysqli_stmt_close($stmt);
+    mysqli_close($conn);
+    */
+
+    // Respond with 200 OK to acknowledge receipt
+    http_response_code(200);
+    echo json_encode(["status" => "callback received"]);
+
+} else {
+    // Missing required fields
+    http_response_code(400);
+    echo json_encode(["error" => "Invalid callback payload"]);
+}
+	
+?>