From e4fba1f51ac9cd3f986f88908177109c1797edd7 Mon Sep 17 00:00:00 2001
From: R <rajif@sismedika.com>
Date: Sat, 17 Sep 2022 09:50:19 +0700
Subject: [PATCH] Add Distance Calculation

---
 .../Controllers/Api/HospitalController.php    | 41 +++++++++++++++++--
 .../Transformers/HospitalResource.php         |  2 +-
 2 files changed, 39 insertions(+), 4 deletions(-)

diff --git a/Modules/Linksehat/Http/Controllers/Api/HospitalController.php b/Modules/Linksehat/Http/Controllers/Api/HospitalController.php
index a9f1c31b..38a0b246 100644
--- a/Modules/Linksehat/Http/Controllers/Api/HospitalController.php
+++ b/Modules/Linksehat/Http/Controllers/Api/HospitalController.php
@@ -4,6 +4,7 @@ namespace Modules\Linksehat\Http\Controllers\Api;
 
 use App\Helpers\Helper;
 use App\Models\Organization;
+use DB;
 use Illuminate\Contracts\Support\Renderable;
 use Illuminate\Http\Request;
 use Illuminate\Routing\Controller;
@@ -19,11 +20,45 @@ class HospitalController extends Controller
     {
         $hospitals = Organization::query()
                                 ->with(['currentAddress'])
-                                ->where('type', 'hospital')
+                                ->where('organizations.type', 'hospital')
                                 ->when($request->search ?? null, function($query, $search) {
                                     $query->where('name', 'LIKE', '%'.$search.'%');
-                                })
-                                ->paginate(6);
+                                });
+        if ($request->has('lat') && !empty($request->lat) && $request->has('lng') && !empty($request->lng)) {
+            $hospitals->leftJoin('addresses', function($q) {
+                $q->on('organizations.main_address_id', '=', 'addresses.id');
+                $q->where('addresses.addressable_type', '=', Organization::class);
+            });
+            $hospitals->select([
+                "organizations.*",
+                DB::raw("ST_Distance_Sphere(point(addresses.lng,addresses.lat), point(".$request->lng.",".$request->lat.")) /1000 as distance_km")
+            ]);
+            
+            $hospitals->orderBy('distance_km', 'desc');
+        } else {
+            $hospitals->orderBy('organizations.name', 'asc');
+        }
+
+        // if ($request->has('order_by')) {
+        //     switch($request->order_by) {
+        //         case 'distance_asc':
+        //             if ($request->order_by == 'distance_asc' && $request->has('lat') && !empty($request->lat) && $request->has('lng') && !empty($request->lng)) {
+        //                 $hospitals->orderBy('distance_km', 'asc');
+        //                 break;
+        //             }
+        //         case 'distance_desc':
+        //             if ($request->order_by == 'distance_desc' && $request->has('lat') && !empty($request->lat) && $request->has('lng') && !empty($request->lng)) {
+        //                 $hospitals->orderBy('distance_km', 'desc');
+        //                 break;
+        //             }
+        //         default: 
+        //             $hospitals->orderBy('organizations.name', 'asc');
+        //             break;
+        //     }
+        // }
+        
+        $hospitals = $hospitals->paginate($request->limit ?? 6);
+        // dd($hospitals->toArray());
                                 
 
         return response()->json([
diff --git a/Modules/Linksehat/Transformers/HospitalResource.php b/Modules/Linksehat/Transformers/HospitalResource.php
index b5fc9ffd..e25c3b82 100644
--- a/Modules/Linksehat/Transformers/HospitalResource.php
+++ b/Modules/Linksehat/Transformers/HospitalResource.php
@@ -22,7 +22,7 @@ class HospitalResource extends JsonResource
             'address' => $this->currentAddress->text ?? null,
             'lat' => $this->currentAddress->lat ?? null,
             'lng' => $this->currentAddress->lng ?? null,
-            'distance' => '200 m',
+            'distance' => isset($this->distance_km) ? round($this->distance_km) . ' km' : '-',
             'city_name' => 'Kota Tangerang',
             'phone' => $this->meta->phone,
             'photo_url' => asset('images/default-hospital-image.png'),