Update: 2026-06-30 23:32:14

backend/Admin/geofence/add_zone.php

@@ -0,0 +1,76 @@
+<?php
+header('Content-Type: application/json; charset=utf-8');
+require_once __DIR__ . '/../../connect.php'; // Includes db connection
+
+$zone_name = filterRequest('zone_name');
+$latitude = filterRequest('latitude');
+$longitude = filterRequest('longitude');
+$radius_meters = filterRequest('radius_meters');
+$country_code = filterRequest('country_code');
+$priority = filterRequest('priority') ?? 1;
+
+if (empty($zone_name) || empty($latitude) || empty($longitude) || empty($radius_meters) || empty($country_code)) {
+    echo json_encode(["status" => "error", "message" => "Missing required fields"]);
+    exit;
+}
+
+try {
+    // 1. Check for overlapping zones
+    // Using Haversine formula directly in SQL to find any zone where distance < (new_radius + existing_radius)
+    $sql = "
+        SELECT id, zone_name, radius_meters, 
+        (
+            6371000 * acos(
+                cos(radians(:new_lat)) * cos(radians(latitude)) * 
+                cos(radians(longitude) - radians(:new_lng)) + 
+                sin(radians(:new_lat)) * sin(radians(latitude))
+            )
+        ) AS distance_meters
+        FROM geofence_zones
+        WHERE is_active = 1 AND country_code = :country_code
+        HAVING distance_meters < (radius_meters + :new_radius)
+        LIMIT 1
+    ";
+
+    $stmt = $con->prepare($sql);
+    $stmt->bindValue(':new_lat', (float) $latitude);
+    $stmt->bindValue(':new_lng', (float) $longitude);
+    $stmt->bindValue(':new_radius', (int) $radius_meters, PDO::PARAM_INT);
+    $stmt->bindValue(':country_code', $country_code);
+    $stmt->execute();
+
+    $overlapping_zone = $stmt->fetch(PDO::FETCH_ASSOC);
+
+    if ($overlapping_zone) {
+        echo json_encode([
+            "status" => "error",
+            "message" => "Zone overlaps with existing zone: " . $overlapping_zone['zone_name'],
+            "overlap_details" => $overlapping_zone
+        ]);
+        exit;
+    }
+
+    // 2. Insert new zone
+    $insert_sql = "INSERT INTO geofence_zones (zone_name, latitude, longitude, radius_meters, priority, country_code) 
+                   VALUES (:zone_name, :lat, :lng, :radius, :priority, :country)";
+    
+    $insert_stmt = $con->prepare($insert_sql);
+    $insert_stmt->bindValue(':zone_name', $zone_name);
+    $insert_stmt->bindValue(':lat', (float) $latitude);
+    $insert_stmt->bindValue(':lng', (float) $longitude);
+    $insert_stmt->bindValue(':radius', (int) $radius_meters, PDO::PARAM_INT);
+    $insert_stmt->bindValue(':priority', (int) $priority, PDO::PARAM_INT);
+    $insert_stmt->bindValue(':country', $country_code);
+    $insert_stmt->execute();
+
+    echo json_encode([
+        "status" => "success",
+        "message" => "Geofence zone added successfully",
+        "zone_id" => $con->lastInsertId()
+    ]);
+
+} catch (Exception $e) {
+    error_log("Error adding geofence zone: " . $e->getMessage());
+    echo json_encode(["status" => "error", "message" => "Server error"]);
+}
+?>