Merge branch 'dev' of https://gitea.nxsir.cn/nanxun/ql_apimanager_backend into dev

Apimanager_backend/Tools/BillableApiDispatcher.cs

@@ -0,0 +1,100 @@
+using Apimanager_backend.Models;
+using System.Reflection;
+using System;
+using Apimanager_backend.Data;
+using Microsoft.EntityFrameworkCore;
+using Apimanager_backend.Exceptions;
+using Apimanager_backend.Dtos;
+using Public;
+using Apimanager_backend.Services;
+
+namespace Apimanager_backend.Tools
+{
+    public class BillableApiDispatcher
+    {
+        private readonly IServiceProvider _serviceProvider;
+        private readonly ApiContext _db;
+        private PluginLoaderService _pluginLoaderService;
+
+        public BillableApiDispatcher(IServiceProvider sp, ApiContext db,PluginLoaderService pluginLoaderService)
+        {
+            _serviceProvider = sp;
+            _db = db;
+            _pluginLoaderService = pluginLoaderService;
+        }
+
+        public async Task<object> DispatchAsync(string webPath,int apiId,string code, ApiCallContext context)
+        {
+            //_pluginLoaderService.LoadPlugins(new ServiceCollection());
+            // 1. 安全验证
+            string dllPath = webPath + "\\ApiHandler\\" + code + ".dll";
+            if (!System.IO.File.Exists(dllPath))
+                throw new BaseException(3002, "接口实现未找到");
+
+            // 2. 加载程序集
+            var assembly = Assembly.LoadFrom(dllPath); // 或使用 AssemblyLoadContext.Default.LoadFromAssemblyPath
+
+            // 3. 查找实现类
+            var type = assembly.GetTypes()
+                .FirstOrDefault(t =>
+                    typeof(IBillableApiHandler).IsAssignableFrom(t) &&
+                    !t.IsInterface &&
+                    !t.IsAbstract &&
+                    t.Name.Equals(code, StringComparison.OrdinalIgnoreCase));
+            if (type == null)
+                throw new BaseException(3002,"接口实现未找到");
+
+            List<UserPackage> userPackages = context.HttpContext.Items["userPackages"] as List<UserPackage>;
+            List<UserPackage> userPackageList = null;
+
+            if (userPackages == null || !(userPackages is IEnumerable<UserPackage>))
+            {
+                throw new BaseException(3004, "未购买该API套餐或权限不足");
+            }
+
+            userPackageList = ((IEnumerable<UserPackage>)userPackages).ToList();
+
+            userPackageList = userPackageList.Where(x => x.ExpiryDate > DateTime.Now).ToList();
+
+            if (userPackageList.Count == 0)
+            {
+                throw new BaseException(3004, "未购买该API套餐或权限不足");
+            }
+
+
+            var maxCountUserPackage = userPackageList.MaxBy(x => x.RemainingCalls);
+
+            if (maxCountUserPackage.RemainingCalls <= 0)
+            {
+                throw new BaseException(3004, "套餐可用额度不足");
+            }
+
+            var uPackage = await _db.UserPackages.SingleOrDefaultAsync(x => x.Id == maxCountUserPackage.Id);
+            if (uPackage == null)
+            {
+                throw new BaseException(3004, "未购买该API套餐或权限不足");
+            }
+
+            uPackage.RemainingCalls -= 1;
+
+            _db.UserPackages.Update(uPackage);
+
+            var handler = (IBillableApiHandler)Activator.CreateInstance(type)!;
+
+            // 执行接口
+            var result = await handler.ExecuteAsync(context);
+
+            // 记录调用日志
+            _db.CallLogs.Add(new ApiCallLog
+            {
+                ApiId = apiId,
+                UserId = context.UserId,
+                CallTime = DateTime.UtcNow
+            });
+
+            await _db.SaveChangesAsync();
+            return result;
+        }
+
+    }
+}

Apimanager_backend/Tools/EpayHelper.cs

@@ -0,0 +1,53 @@
+using Apimanager_backend.Dtos;
+using Newtonsoft.Json;
+using System.Security.Cryptography;
+using System.Text;
+
+namespace Apimanager_backend.Tools
+{
+    public static class EpayHelper
+    {
+        /// <summary>
+        /// 创建签名
+        /// </summary>
+        public static string CreateSign(Dictionary<string, string> parameters, string key)
+        {
+            var sorted = parameters
+                .Where(kv => !string.IsNullOrEmpty(kv.Value) && kv.Key != "sign" && kv.Key != "sign_type")
+                .OrderBy(kv => kv.Key)
+                .ToList();
+
+            string query = string.Join("&", sorted.Select(kv => $"{kv.Key}={kv.Value}"));
+            string toSign = query + key;
+
+            using (var md5 = MD5.Create())
+            {
+                byte[] hash = md5.ComputeHash(Encoding.UTF8.GetBytes(toSign));
+                return BitConverter.ToString(hash).Replace("-", "").ToLower();
+            }
+        }
+        /// <summary>
+        /// 发起API支付（返回 json）
+        /// </summary>
+        public static async Task<EpayResponse?> ApiPayAsync(Dictionary<string, string> parameters, string key,string baseUrl)
+        {
+            parameters["sign_type"] = "MD5";
+            parameters["sign"] = CreateSign(parameters, key);
+
+            using var client = new HttpClient();
+            var content = new FormUrlEncodedContent(parameters);
+            var response = await client.PostAsync($"{baseUrl}/mapi.php", content);
+            return JsonConvert.DeserializeObject<EpayResponse>(await response.Content.ReadAsStringAsync());
+        }
+
+        /// <summary>
+        /// 校验签名（通常用于异步通知/页面跳转）
+        /// </summary>
+        public static bool VerifySign(Dictionary<string, string> parameters, string key)
+        {
+            if (!parameters.TryGetValue("sign", out string originalSign)) return false;
+            string newSign = CreateSign(parameters, key);
+            return originalSign.Equals(newSign, StringComparison.OrdinalIgnoreCase);
+        }
+    }
+}

Apimanager_backend/Tools/OrderNumberGenerator.cs

@@ -0,0 +1,14 @@
+namespace Apimanager_backend.Tools
+{
+    public static class OrderNumberGenerator
+    {
+        public static string Generate(int userId = 0, string prefix = "ORD")
+        {
+            var datePart = DateTime.UtcNow.ToString("yyyyMMddHHmmssfff");  // 17位
+            var userPart = (userId % 10000).ToString("D4");                // 后4位用户ID
+            var randPart = Random.Shared.Next(1000, 9999).ToString();      // 4位随机数
+
+            return $"{prefix}{datePart}{userPart}{randPart}";             // 最终：ORD + 时间 + 用户 + 随机数
+        }
+    }
+}

Apimanager_backend/Tools/UserInfoHelper.cs

@@ -0,0 +1,29 @@
+namespace Apimanager_backend.Tools
+{
+    public static class UserInfoHelper
+    {
+        public static string GetClientIp(HttpContext context)
+        {
+            var ip = context.Connection.RemoteIpAddress?.ToString();
+
+            // 支持代理（如 Nginx）时使用 X-Forwarded-For
+            if (context.Request.Headers.ContainsKey("X-Forwarded-For"))
+            {
+                ip = context.Request.Headers["X-Forwarded-For"].FirstOrDefault();
+            }
+
+            return ip ?? "unknown";
+        }
+        public static string GetDeviceType(HttpContext context)
+        {
+            var userAgent = context.Request.Headers["User-Agent"].ToString().ToLower();
+
+            if (userAgent.Contains("mobile") || userAgent.Contains("android") || userAgent.Contains("iphone"))
+                return "mobile";
+
+            return "pc";
+        }
+
+
+    }
+}