first commit

app/Http/Controllers/MerchantController.php

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+<?php
+
+namespace App\Http\Controllers;
+
+use Illuminate\Http\Request;
+use Illuminate\Http\JsonResponse;
+
+class MerchantController extends Controller
+{
+    /**
+     * GET /api/merchants
+     * Get all merchants with optional filters
+     */
+    public function index(Request $request): JsonResponse
+    {
+        // Read from merchants.json file (like the original Express.js backend)
+        $jsonPath = base_path('merchants.json');
+
+        if (!file_exists($jsonPath)) {
+            return response()->json([]);
+        }
+
+        $merchants = json_decode(file_get_contents($jsonPath), true);
+
+        // Filter by bbox if provided
+        if ($request->has('bbox') && !empty($request->bbox)) {
+            $bbox = explode(',', $request->bbox);
+            if (count($bbox) === 4) {
+                $minLng = (float) $bbox[0];
+                $minLat = (float) $bbox[1];
+                $maxLng = (float) $bbox[2];
+                $maxLat = (float) $bbox[3];
+
+                $merchants = array_filter($merchants, function ($m) use ($minLat, $maxLat, $minLng, $maxLng) {
+                    return $m['latitude'] >= $minLat &&
+                        $m['latitude'] <= $maxLat &&
+                        $m['longitude'] >= $minLng &&
+                        $m['longitude'] <= $maxLng;
+                });
+            }
+        }
+
+        // Filter by categories if provided
+        if ($request->has('categories') && !empty($request->categories)) {
+            $categories = explode(',', $request->categories);
+            $merchants = array_filter($merchants, function ($m) use ($categories) {
+                return in_array($m['category'], $categories);
+            });
+        }
+
+
+
+        // Return plain values
+        return response()->json(array_map(function ($m) {
+            $m['latitude'] = (float) $m['latitude'];
+            $m['longitude'] = (float) $m['longitude'];
+            return $m;
+        }, array_values($merchants)));
+    }
+}