Added Creation of Promo Codes

app/Http/Controllers/API/v1/PromoCode/PromoCodeController.php

@@ -0,0 +1,116 @@
+<?php
+
+namespace App\Http\Controllers\API\v1\PromoCode;
+
+use DateTime;
+use Carbon\Carbon;
+use App\Models\PromoCode;
+use Illuminate\Http\Request;
+use App\Http\Traits\DistanceTrait;
+use App\Http\Controllers\Controller;
+use App\Http\Requests\CreatePromoCodeRequest;
+
+class PromoCodeController extends Controller
+{
+
+    use DistanceTrait;
+
+    /**
+     * Display a listing of the resource.
+     *
+     * @return \Illuminate\Http\Response
+     */
+    public function index()
+    {
+        //
+    }
+
+    /**
+     * Store a newly created resource in storage.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @return \Illuminate\Http\Response
+     */
+    public function store(CreatePromoCodeRequest $request)
+    {
+        if ($request->code == null) {
+            # code...
+            $request->code = PromoCode::generate();
+        }
+
+        $venue_coordinates = $this->get_latitude_and_longitude($request->venue);
+
+        if ($venue_coordinates == null) {
+            # code...
+
+            $response = [
+                'status' => 'error',
+                'message' => 'Sorry. Location not found.'
+            ];
+
+            return response()->json($response, 400);
+        }
+
+        $expiry = PromoCode::fetch_ttl($request->expiry_date);
+
+        $promo_code = PromoCode::create([
+            'code' => $request->code,
+            'venue' => $request->venue,
+            'value' => $request->value,
+            'radius' => $request->radius,
+            'expires_at' => $expiry
+        ]);
+
+        if ($promo_code == null) {
+            # code...
+            $response = [
+                'status' => 'error',
+                'message' => 'Error saving promo code.'
+            ];
+
+            return response()->json($response, 400);
+        }
+
+
+        $response = [
+            'status' => 'success',
+            'message' => 'New Promo Code Successfully saved.'
+        ];
+
+        return response()->json($response, 201);
+    }
+
+    /**
+     * Display the specified resource.
+     *
+     * @param  int  $id
+     * @return \Illuminate\Http\Response
+     */
+    public function show($id)
+    {
+        //
+    }
+
+    /**
+     * Update the specified resource in storage.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @param  int  $id
+     * @return \Illuminate\Http\Response
+     */
+    public function update(Request $request, $id)
+    {
+        //
+    }
+
+    /**
+     * Remove the specified resource from storage.
+     *
+     * @param  int  $id
+     * @return \Illuminate\Http\Response
+     */
+    public function destroy($id)
+    {
+        //
+    }
+}

app/Http/Requests/CreatePromoCodeRequest.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace App\Http\Requests;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class CreatePromoCodeRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     *
+     * @return bool
+     */
+    public function authorize()
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        return [
+            'code' => 'nullable|string|unique:promo_codes',
+            'value' => 'required|numeric|gt:0',
+            'venue' => 'required|string',
+            'radius' => 'required|numeric|gt:0',
+            'expiry_date' => 'required|date|after_or_equal:' . date('Y-m-d')
+        ];
+    }
+}

app/Http/Traits/DistanceTrait.php

@@ -0,0 +1,99 @@
+<?php
+
+namespace App\Http\Traits;
+
+use GuzzleHttp\Client;
+use GuzzleHttp\Exception\ClientException;
+use GuzzleHttp\Exception\RequestException;
+use Illuminate\Http\Client\ConnectionException;
+
+trait DistanceTrait
+{
+
+    // Using Haversine formula to calculate the shortest distance between both coordinates.
+
+    protected function get_distance(array $point1, array $point2)
+    {
+
+        $earth_radius = 6371;  // earth radius in km
+        $point1_lat = $point1["latitude"];
+        $point2_lat = $point2["latitude"];
+
+        $lat_diff = deg2rad($point2_lat - $point1_lat);
+        $point1_long = $point1["longitude"];
+        $point2_long = $point2["longitude"];
+
+        $long_diff = deg2rad($point2_long - $point1_long);
+
+        $a = sin($lat_diff / 2) * sin($lat_diff / 2) + cos(deg2rad($point1_lat)) * cos(deg2rad($point2_lat)) * sin($long_diff / 2) * sin($long_diff / 2);
+        $c = 2 * atan2(sqrt($a), sqrt(1 - $a));
+
+        $distance = $earth_radius * $c;
+        $distance = round($distance, 2);
+
+        return $distance;    // in km
+    }
+
+    // Fetch the latitude and longitude of input address
+    protected function get_latitude_and_longitude($address)
+    {
+        try {
+            $client = new Client();
+
+            $res = $client->request('GET', 'https://maps.googleapis.com/maps/api/geocode/json', [
+                'query' =>  [
+                    'address' => urlencode($address),
+                    'key' => env('GOOGLE_MAPS_API_KEY')
+                ]
+            ]);
+
+            $response = json_decode($res->getBody());
+
+            if ($response->status == 'ZERO_RESULTS') {
+                # code...
+                return null;
+            }
+
+            $latitude = $response->results[0]->geometry->location->lat;
+            $longitude = $response->results[0]->geometry->location->lng;
+
+            $coordinates = [
+                "latitude" => $latitude,
+                "longitude" => $longitude
+            ];
+
+            return $coordinates;
+        } catch (RequestException $e) {
+            $response = $e->getResponse();
+            $result =  $response->getBody();
+
+            $data = [
+                'status' => 400,
+                'response' => $response,
+                'result' => $result
+            ];
+
+            return $data;
+        } catch (ClientException $e) {
+            $response = $e->getResponse();
+            $result =  $response->getBody();
+
+            $data = [
+                'status' => 400,
+                'response' => $response,
+                'result' => $result
+            ];
+
+            return $data;
+        } catch (ConnectionException $e) {
+            $result =  $response->getBody();
+
+            $data = [
+                'status' => 400,
+                'result' => $result
+            ];
+
+            return $data;
+        }
+    }
+}

app/Models/PromoCode.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Support\Str;
+use Illuminate\Database\Eloquent\Model;
+use Mvdnbrk\EloquentExpirable\Expirable;
+use BinaryCabin\LaravelUUID\Traits\HasUUID;
+use Illuminate\Database\Eloquent\SoftDeletes;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+
+class PromoCode extends Model
+{
+    use HasFactory, HasUUID, SoftDeletes, Expirable;
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array
+     */
+    protected $fillable = [
+        'code',
+        'value',
+        'venue',
+        'radius',
+        'expires_at'
+    ];
+
+    public static function generate()
+    {
+        return 'SB' . Str::random(6);
+    }
+
+    public static function fetch_ttl($datetime)
+    {
+        return now()->diffInSeconds($datetime);
+    }
+}

composer.json

@@ -16,6 +16,7 @@
         "laravel/framework": "^8.12",
         "laravel/sanctum": "^2.8",
         "laravel/tinker": "^2.5",
+        "mvdnbrk/laravel-model-expires": "^1.8",
         "spatie/laravel-http-logger": "^1.6",
         "unicodeveloper/laravel-password": "^1.0"
     },