Initial WebGIS portal project

2026-06-10 19:53:39 +07:00
commit c0aa8e09d5
62 changed files with 9013 additions and 0 deletions
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+<?php
+/**
+ * Menghitung jarak antara dua koordinat menggunakan formula Haversine.
+ * @param float $lat1 Latitude titik pertama
+ * @param float $lon1 Longitude titik pertama
+ * @param float $lat2 Latitude titik kedua
+ * @param float $lon2 Longitude titik kedua
+ * @return float Jarak dalam satuan meter
+ */
+function calculateHaversineDistance($lat1, $lon1, $lat2, $lon2) {
+    $earthRadius = 6371000; // Radius bumi dalam meter
+
+    $latFrom = deg2rad($lat1);
+    $lonFrom = deg2rad($lon1);
+    $latTo = deg2rad($lat2);
+    $lonTo = deg2rad($lon2);
+
+    $latDelta = $latTo - $latFrom;
+    $lonDelta = $lonTo - $lonFrom;
+
+    $angle = 2 * asin(sqrt(pow(sin($latDelta / 2), 2) +
+        cos($latFrom) * cos($latTo) * pow(sin($lonDelta / 2), 2)));
+        
+    return $angle * $earthRadius;
+}
+
+function calculateOsrmRouteDistance($lat1, $lon1, $lat2, $lon2): ?float
+{
+    $coordinates = sprintf(
+        '%.8F,%.8F;%.8F,%.8F',
+        $lon1,
+        $lat1,
+        $lon2,
+        $lat2
+    );
+    $url = 'https://router.project-osrm.org/route/v1/driving/' . $coordinates . '?overview=false&alternatives=false&steps=false';
+
+    $ch = curl_init($url);
+    if ($ch === false) {
+        return null;
+    }
+
+    curl_setopt_array($ch, [
+        CURLOPT_RETURNTRANSFER => true,
+        CURLOPT_CONNECTTIMEOUT => 4,
+        CURLOPT_TIMEOUT => 8,
+        CURLOPT_USERAGENT => 'WebGIS-Peduli/1.0',
+    ]);
+
+    $response = curl_exec($ch);
+    $httpCode = (int)curl_getinfo($ch, CURLINFO_RESPONSE_CODE);
+    curl_close($ch);
+
+    if ($response === false || $httpCode !== 200) {
+        return null;
+    }
+
+    $json = json_decode($response, true);
+    if (!is_array($json) || ($json['code'] ?? '') !== 'Ok') {
+        return null;
+    }
+
+    $distance = $json['routes'][0]['distance'] ?? null;
+
+    return is_numeric($distance) ? (float)$distance : null;
+}
+
+function calculateRoadDistance($lat1, $lon1, $lat2, $lon2): ?float
+{
+    return calculateOsrmRouteDistance((float)$lat1, (float)$lon1, (float)$lat2, (float)$lon2);
+}
+
+function ensurePendudukDistanceColumns(PDO $pdo): void
+{
+    $stmt = $pdo->query("SHOW COLUMNS FROM penduduk_miskin LIKE 'jarak_rute_m'");
+    if ($stmt->fetch() === false) {
+        $pdo->exec("ALTER TABLE penduduk_miskin ADD COLUMN jarak_rute_m DECIMAL(10, 2) NULL AFTER jarak_m");
+    }
+}
+
+function calculatePendudukCoverage(PDO $pdo, float $lat, float $lng): array
+{
+    $stmtRi = $pdo->query("SELECT id, lat, lng, radius FROM rumah_ibadah");
+    $rumahIbadah = $stmtRi->fetchAll(PDO::FETCH_ASSOC);
+
+    $nearest = null;
+    $nearestCovered = null;
+
+    foreach ($rumahIbadah as $ri) {
+        $distance = calculateHaversineDistance($lat, $lng, (float)$ri['lat'], (float)$ri['lng']);
+        $result = [
+            'ibadah_id' => (int)$ri['id'],
+            'ri_lat' => (float)$ri['lat'],
+            'ri_lng' => (float)$ri['lng'],
+            'jarak_m' => round($distance, 2),
+            'distance' => $distance,
+        ];
+
+        if ($nearest === null || $distance < $nearest['distance']) {
+            $nearest = $result;
+        }
+
+        if ($distance <= (float)$ri['radius'] && ($nearestCovered === null || $distance < $nearestCovered['distance'])) {
+            $nearestCovered = $result;
+        }
+    }
+
+    $selected = $nearestCovered ?? $nearest;
+    $routeDistance = null;
+
+    if ($selected !== null) {
+        $routeDistance = calculateRoadDistance($lat, $lng, $selected['ri_lat'], $selected['ri_lng']);
+    }
+
+    return [
+        'ibadah_id' => $selected['ibadah_id'] ?? null,
+        'jarak_m' => $selected['jarak_m'] ?? null,
+        'jarak_rute_m' => $routeDistance !== null ? round($routeDistance, 2) : null,
+        'is_blank_spot' => $nearestCovered === null ? 1 : 0,
+    ];
+}
+
+function recalculateAllPendudukCoverage(PDO $pdo): void
+{
+    ensurePendudukDistanceColumns($pdo);
+
+    $stmt = $pdo->query("SELECT id, lat, lng FROM penduduk_miskin");
+    $penduduk = $stmt->fetchAll(PDO::FETCH_ASSOC);
+    $update = $pdo->prepare("
+        UPDATE penduduk_miskin
+        SET ibadah_id = ?, jarak_m = ?, jarak_rute_m = ?, is_blank_spot = ?
+        WHERE id = ?
+    ");
+
+    foreach ($penduduk as $row) {
+        $coverage = calculatePendudukCoverage($pdo, (float)$row['lat'], (float)$row['lng']);
+        $update->execute([
+            $coverage['ibadah_id'],
+            $coverage['jarak_m'],
+            $coverage['jarak_rute_m'],
+            $coverage['is_blank_spot'],
+            $row['id'],
+        ]);
+    }
+}