First commit / commit pertama

2026-06-13 11:24:58 +07:00
commit 522c4f7200
166 changed files with 13326 additions and 0 deletions
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+<?php
+/**
+ * geo_helper.php
+ * Tanggung Jawab: Menyediakan fungsi matematika spasial manual (seperti Haversine).
+ */
+
+class GeoHelper {
+    /**
+     * Menghitung jarak antara dua koordinat geografis menggunakan Haversine Formula.
+     * Mengembalikan jarak dalam satuan Kilometer.
+     */
+    public static function haversineDistance($lat1, $lon1, $lat2, $lon2) {
+        $earthRadius = 6371; // Jari-jari bumi dalam kilometer
+
+        $dLat = deg2rad($lat2 - $lat1);
+        $dLon = deg2rad($lon2 - $lon1);
+
+        $a = sin($dLat / 2) * sin($dLat / 2) +
+             cos(deg2rad($lat1)) * cos(deg2rad($lat2)) *
+             sin($dLon / 2) * sin($dLon / 2);
+
+        $c = 2 * atan2(sqrt($a), sqrt(1 - $a));
+        $distance = $earthRadius * $c;
+
+        return $distance;
+    }
+
+    /**
+     * Mencari Warga Miskin dalam radius tertentu dari suatu titik (Rumah Ibadah).
+     */
+    public static function getWargaDalamRadius($pdo, $pusatLat, $pusatLon, $radiusKm = 1.0) {
+        // Ambil semua data warga miskin
+        $stmt = $pdo->query("SELECT id, nama_kk, penghasilan, jumlah_tanggungan, ST_AsGeoJSON(geom) as geojson FROM warga_miskin");
+        
+        $wargaDalamRadius = [];
+
+        while ($row = $stmt->fetch()) {
+            $geom = json_decode($row['geojson'], true);
+            // GeoJSON Point format: [Longitude, Latitude]
+            $wargaLon = $geom['coordinates'][0];
+            $wargaLat = $geom['coordinates'][1];
+
+            // Hitung jarak dengan Haversine
+            $jarak = self::haversineDistance($pusatLat, $pusatLon, $wargaLat, $wargaLon);
+
+            if ($jarak <= $radiusKm) {
+                $wargaDalamRadius[] = [
+                    'id' => $row['id'],
+                    'nama_kk' => $row['nama_kk'],
+                    'penghasilan' => $row['penghasilan'],
+                    'jumlah_tanggungan' => $row['jumlah_tanggungan'],
+                    'jarak_km' => round($jarak, 2),
+                    'geometry' => $geom
+                ];
+            }
+        }
+
+        // Urutkan berdasarkan jarak terdekat
+        usort($wargaDalamRadius, function($a, $b) {
+            return $a['jarak_km'] <=> $b['jarak_km'];
+        });
+
+        return $wargaDalamRadius;
+    }
+}
+?>
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+<?php
+/**
+ * response_helper.php
+ * Tanggung Jawab: Standarisasi format response JSON.
+ */
+
+header('Content-Type: application/json; charset=utf-8');
+$allowedOrigin = getenv('CORS_ALLOWED_ORIGIN');
+if ($allowedOrigin !== false && $allowedOrigin !== '') {
+    header('Access-Control-Allow-Origin: ' . $allowedOrigin);
+    header('Vary: Origin');
+    header('Access-Control-Allow-Methods: GET, POST, PUT, DELETE, OPTIONS');
+    header('Access-Control-Allow-Headers: Content-Type, Access-Control-Allow-Headers, Authorization, X-Requested-With');
+}
+
+if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') { exit(0); }
+
+function sendSuccess($data = null, $message = 'Success', $statusCode = 200) {
+    http_response_code($statusCode);
+    echo json_encode(['status' => 'success', 'message' => $message, 'data' => $data]);
+    exit();
+}
+
+function sendError($message = 'Error', $statusCode = 400) {
+    http_response_code($statusCode);
+    echo json_encode(['status' => 'error', 'message' => $message]);
+    exit();
+}
+?>