feat(wxapi): 构造器模式

samples/SKIT.FlurlHttpClient.Wechat.Api.Sample_Net6/Services/HttpClients/Implements/WechatApiClientFactory.cs

@@ -1,16 +1,20 @@
 using System;
 using System.Linq;
+using System.Net.Http;
 using Microsoft.Extensions.Options;
 
 namespace SKIT.FlurlHttpClient.Wechat.Api.Sample.Services.HttpClients.Implements
 {
     internal partial class WechatApiClientFactory : IWechatApiClientFactory
     {
+        private readonly IHttpClientFactory _httpClientFactory;
         private readonly Options.WechatOptions _wechatOptions;
 
         public WechatApiClientFactory(
+            IHttpClientFactory httpClientFactory,
             IOptions<Options.WechatOptions> wechatOptions)
         {
+            _httpClientFactory = httpClientFactory;
             _wechatOptions = wechatOptions.Value;
         }
 
@@ -31,7 +35,9 @@ namespace SKIT.FlurlHttpClient.Wechat.Api.Sample.Services.HttpClients.Implements
                 PushEncodingAESKey = _wechatOptions.CallbackEncodingAESKey,
                 PushToken = _wechatOptions.CallbackToken
             };
-            var wechatApiClient = new WechatApiClient(wechatApiClientOptions);
+            var wechatApiClient = WechatApiClientBuilder.Create(wechatApiClientOptions)
+                .UseHttpClient(_httpClientFactory.CreateClient(), disposeClient: false)
+                .Build();
             return wechatApiClient;
         }
     }

src/SKIT.FlurlHttpClient.Wechat.Api/WechatApiClientBuilder.cs

@@ -0,0 +1,94 @@
+using System;
+using System.Collections.Generic;
+using System.Net.Http;
+
+namespace SKIT.FlurlHttpClient.Wechat.Api
+{
+    /// <summary>
+    /// 用于构造 <see cref="WechatApiClient"/> 实例的构造器。
+    /// </summary>
+    public partial class WechatApiClientBuilder : ICommonClientBuilder<WechatApiClient>
+    {
+        private readonly WechatApiClientOptions _options;
+        private readonly IList<Action<CommonClientSettings>> _configures;
+        private readonly IList<HttpInterceptor> _interceptors;
+        private HttpClient? _httpClient;
+        private bool? _disposeClient;
+
+        private WechatApiClientBuilder(WechatApiClientOptions options)
+        {
+            _options = options;
+            _configures = new List<Action<CommonClientSettings>>();
+            _interceptors = new List<HttpInterceptor>();
+        }
+
+        ICommonClientBuilder<WechatApiClient> ICommonClientBuilder<WechatApiClient>.ConfigureSettings(Action<CommonClientSettings> configure)
+        {
+            return ConfigureSettings(configure);
+        }
+
+        ICommonClientBuilder<WechatApiClient> ICommonClientBuilder<WechatApiClient>.UseInterceptor(HttpInterceptor interceptor)
+        {
+            return UseInterceptor(interceptor);
+        }
+
+        ICommonClientBuilder<WechatApiClient> ICommonClientBuilder<WechatApiClient>.UseHttpClient(HttpClient httpClient, bool disposeClient)
+        {
+            return UseHttpClient(httpClient, disposeClient);
+        }
+
+        public WechatApiClientBuilder ConfigureSettings(Action<CommonClientSettings> configure)
+        {
+            if (configure is null) throw new ArgumentNullException(nameof(configure));
+
+            _configures.Add(configure);
+            return this;
+        }
+
+        public WechatApiClientBuilder UseInterceptor(HttpInterceptor interceptor)
+        {
+            if (interceptor is null) throw new ArgumentNullException(nameof(interceptor));
+
+            _interceptors.Add(interceptor);
+            return this;
+        }
+
+        public WechatApiClientBuilder UseHttpClient(HttpClient httpClient, bool disposeClient = true)
+        {
+            if (httpClient is null) throw new ArgumentNullException(nameof(httpClient));
+
+            _httpClient = httpClient;
+            _disposeClient = disposeClient;
+            return this;
+        }
+
+        public WechatApiClient Build()
+        {
+            WechatApiClient client = _disposeClient.HasValue
+                ? new WechatApiClient(_options, _httpClient, _disposeClient.Value)
+                : new WechatApiClient(_options, _httpClient);
+
+            foreach (Action<CommonClientSettings> configure in _configures)
+            {
+                client.Configure(configure);
+            }
+
+            foreach (HttpInterceptor interceptor in _interceptors)
+            {
+                client.Interceptors.Add(interceptor);
+            }
+
+            return client;
+        }
+    }
+
+    partial class WechatApiClientBuilder
+    {
+        public static WechatApiClientBuilder Create(WechatApiClientOptions options)
+        {
+            if (options is null) throw new ArgumentNullException(nameof(options));
+
+            return new WechatApiClientBuilder(options);
+        }
+    }
+}