初始化项目

app/Http/Controllers/System/Api/City.php

@@ -0,0 +1,75 @@
+<?php
+
+namespace App\Http\Controllers\System\Api;
+
+use App\Http\Controllers\Controller;
+use Illuminate\Http\Request;
+use App\Services\System\CityService;
+
+class City extends Controller
+{
+    protected $cityService;
+
+    public function __construct(CityService $cityService)
+    {
+        $this->cityService = $cityService;
+    }
+
+    public function tree()
+    {
+        $tree = $this->cityService->getCachedTree();
+        return response()->json([
+            'code' => 200,
+            'message' => 'success',
+            'data' => $tree
+        ]);
+    }
+
+    public function provinces()
+    {
+        $provinces = $this->cityService->getProvinces();
+        return response()->json([
+            'code' => 200,
+            'message' => 'success',
+            'data' => $provinces
+        ]);
+    }
+
+    public function cities(int $provinceId)
+    {
+        $cities = $this->cityService->getCities($provinceId);
+        return response()->json([
+            'code' => 200,
+            'message' => 'success',
+            'data' => $cities
+        ]);
+    }
+
+    public function districts(int $cityId)
+    {
+        $districts = $this->cityService->getDistricts($cityId);
+        return response()->json([
+            'code' => 200,
+            'message' => 'success',
+            'data' => $districts
+        ]);
+    }
+
+    public function show(int $id)
+    {
+        $city = $this->cityService->getById($id);
+        if (!$city) {
+            return response()->json([
+                'code' => 404,
+                'message' => '城市不存在',
+                'data' => null
+            ], 404);
+        }
+
+        return response()->json([
+            'code' => 200,
+            'message' => 'success',
+            'data' => $city
+        ]);
+    }
+}