新增农户功能升级：身份证OCR/OSS上传、头像采集、同名村检测、Region热度排序及表单体验优化

- Region 表新增热度列，热门省份优先显示 - 区县下拉按地级市分组、已录区县优先、支持全省搜索 - 组选择内置一组至二十组 - 银行卡号独立行+粗体预览，开户行独立行 - 新增农户类型：农户/个体户/合作社/经营集体/公司 - 身份证正反面支持高拍仪/摄像头OCR与手机扫码上传，附件存本地/OSS - 新增农户头像采集组件（摄像头/本地上传），预留人脸识别收购扩展 - 同名村弹窗提醒（防选错乡镇） - 编辑窗体禁止遮罩/Esc误关，整体加宽适配高频操作 - 修复二维码局域网手机无法访问（监听0.0.0.0、局域网IP识别、Vite代理兜底）
2026-08-13 16:07:35 +08:00
commit c377421a3e
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+using AgriculturalPlatform.Api.Data;
+using AgriculturalPlatform.Api.Dtos;
+using AgriculturalPlatform.Api.Models;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+
+namespace AgriculturalPlatform.Api.Controllers;
+
+[ApiController]
+[Route("api/products")]
+[Authorize]
+public class ProductsController(AppDbContext db) : ControllerBase
+{
+    /// <summary>品种列表（可选品类/关键字）</summary>
+    [HttpGet]
+    public async Task<ActionResult> List(string? category, string? keyword)
+    {
+        var query = db.Products.AsQueryable();
+        if (!string.IsNullOrWhiteSpace(category))
+            query = query.Where(p => p.Category == category);
+        if (!string.IsNullOrWhiteSpace(keyword))
+            query = query.Where(p => p.Name.Contains(keyword) || p.Category.Contains(keyword));
+        var items = await query.OrderBy(p => p.Category).ThenBy(p => p.Name).ToListAsync();
+        return Ok(items.ToDtos());
+    }
+
+    /// <summary>品类列表（筛选用）</summary>
+    [HttpGet("categories")]
+    public async Task<ActionResult> Categories()
+    {
+        var items = await db.Products.Select(p => p.Category).Distinct().OrderBy(c => c).ToListAsync();
+        return Ok(items);
+    }
+
+    [HttpPost]
+    public async Task<ActionResult<ProductDto>> Create(ProductSaveRequest req)
+    {
+        if (await db.Products.AnyAsync(p => p.Name == req.Name))
+            return BadRequest(new { message = "品种名称已存在" });
+        var product = new Product
+        {
+            Name = req.Name, Category = req.Category, Unit = req.Unit,
+            Spec = req.Spec, Price = req.Price
+        };
+        if (Enum.TryParse<ProductStatus>(req.Status, out var status)) product.Status = status;
+        db.Products.Add(product);
+        await db.SaveChangesAsync();
+        return Ok(product.ToDto());
+    }
+
+    [HttpPut("{id:int}")]
+    public async Task<ActionResult<ProductDto>> Update(int id, ProductSaveRequest req)
+    {
+        var product = await db.Products.FindAsync(id);
+        if (product is null) return NotFound();
+        if (req.Name != product.Name && await db.Products.AnyAsync(p => p.Name == req.Name))
+            return BadRequest(new { message = "品种名称已存在" });
+
+        product.Name = req.Name; product.Category = req.Category; product.Unit = req.Unit;
+        product.Spec = req.Spec; product.Price = req.Price;
+        if (Enum.TryParse<ProductStatus>(req.Status, out var status)) product.Status = status;
+        await db.SaveChangesAsync();
+        return Ok(product.ToDto());
+    }
+
+    [HttpDelete("{id:int}")]
+    public async Task<IActionResult> Delete(int id)
+    {
+        var product = await db.Products.FindAsync(id);
+        if (product is null) return NotFound();
+        if (await db.PurchaseOrders.AnyAsync(p => p.ProductId == id))
+            return BadRequest(new { message = "该品种已有收购记录，无法删除" });
+        db.Products.Remove(product);
+        await db.SaveChangesAsync();
+        return Ok(new { message = "删除成功" });
+    }
+}