feat: add 服务端

PetWash.Api/Controllers/PackagesController.cs

@@ -0,0 +1,34 @@
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using PetWash.Api.Data;
+
+namespace PetWash.Api.Controllers;
+
+[ApiController]
+[Route("api/[controller]")]
+public class PackagesController : ControllerBase
+{
+    private readonly PetWashDbContext _context;
+
+    public PackagesController(PetWashDbContext context)
+    {
+        _context = context;
+    }
+
+    [HttpGet]
+    public async Task<IActionResult> GetPackages()
+    {
+        var packages = await _context.Packages.ToListAsync();
+        return Ok(packages);
+    }
+
+    [HttpGet("{id}")]
+    public async Task<IActionResult> GetPackage(int id)
+    {
+        var package = await _context.Packages.FindAsync(id);
+        if (package == null)
+            return NotFound();
+
+        return Ok(package);
+    }
+}