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backend/FateMaster.API/Controllers/Admin/PricesController.cs

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+using FateMaster.API.Data;
+using FateMaster.API.Models;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+
+namespace FateMaster.API.Controllers.Admin;
+
+[ApiController]
+[Route("api/admin/[controller]")]
+public class PricesController : ControllerBase
+{
+    private readonly ApplicationDbContext _context;
+
+    public PricesController(ApplicationDbContext context)
+    {
+        _context = context;
+    }
+
+    /// <summary>
+    /// 获取所有价格配置
+    /// </summary>
+    [HttpGet]
+    public async Task<ActionResult<List<PriceConfig>>> GetAll()
+    {
+        return await _context.PriceConfigs.ToListAsync();
+    }
+
+    /// <summary>
+    /// 更新价格配置
+    /// </summary>
+    [HttpPut("{id}")]
+    public async Task<ActionResult> Update(int id, [FromBody] UpdatePriceRequest request)
+    {
+        var price = await _context.PriceConfigs.FindAsync(id);
+        if (price == null)
+        {
+            return NotFound();
+        }
+
+        price.Price = request.Price;
+        price.IsEnabled = request.IsEnabled;
+        price.UpdatedAt = DateTime.UtcNow;
+
+        await _context.SaveChangesAsync();
+        return Ok(price);
+    }
+}
+
+public record UpdatePriceRequest(decimal Price, bool IsEnabled);