From cf6e0ecfbba6f349293e910c5e22556b3a6d1657 Mon Sep 17 00:00:00 2001
From: Fu Diwei <fudiwei@sina.com>
Date: Mon, 10 Jan 2022 11:55:33 +0800
Subject: [PATCH] =?UTF-8?q?feat(wxapi):=20=E6=96=B0=E5=A2=9E=E7=94=9F?=
 =?UTF-8?q?=E6=88=90=E5=85=AC=E4=BC=97=E5=8F=B7=E7=BD=91=E9=A1=B5=E6=8E=88?=
 =?UTF-8?q?=E6=9D=83=20URL=20=E7=9A=84=E6=89=A9=E5=B1=95=E6=96=B9=E6=B3=95?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../WechatApiClientParameterExtensions.cs     | 52 +++++++++++++++++--
 1 file changed, 49 insertions(+), 3 deletions(-)

diff --git a/src/SKIT.FlurlHttpClient.Wechat.Api/Extensions/WechatApiClientParameterExtensions.cs b/src/SKIT.FlurlHttpClient.Wechat.Api/Extensions/WechatApiClientParameterExtensions.cs
index 6f823fa4..8c4fcce0 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.Api/Extensions/WechatApiClientParameterExtensions.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.Api/Extensions/WechatApiClientParameterExtensions.cs
@@ -1,14 +1,14 @@
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
+using Flurl;
 
 namespace SKIT.FlurlHttpClient.Wechat.Api
 {
-    /// <summary>
-    /// 为 <see cref="WechatApiClient"/> 提供客户端调起 JS-SDK 签名的扩展方法。
-    /// </summary>
     public static class WechatApiClientParameterExtensions
     {
+        private const string BASE_URL = "https://open.weixin.qq.com/";
+
         /// <summary>
         /// <para>生成客户端 JS-SDK `wx.config` 所需的参数。</para>
         /// <para>REF: https://developers.weixin.qq.com/doc/offiaccount/OA_Web_Apps/JS-SDK.html#62 </para>
@@ -69,5 +69,51 @@ namespace SKIT.FlurlHttpClient.Wechat.Api
                 { "cardSign", cardSign }
             });
         }
+
+        /// <summary>
+        /// <para>生成公众号网页授权 URL。</para>
+        /// <para>REF: https://developers.weixin.qq.com/doc/offiaccount/OA_Web_Apps/Wechat_webpage_authorization.html </para>
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="redirectUrl"></param>
+        /// <param name="scope"></param>
+        /// <param name="state"></param>
+        /// <returns></returns>
+        public static string GenerateParameterizedUrlForConnectOAuth2Authorize(this WechatApiClient client, string redirectUrl, string scope, string? state = null)
+        {
+            return new Url(BASE_URL)
+                .AppendPathSegments("connect", "oauth2", "authorize")
+                .SetQueryParam("appid", client.Credentials.AppId)
+                .SetQueryParam("redirect_uri", redirectUrl)
+                .SetQueryParam("response_type", "code")
+                .SetQueryParam("scope", scope)
+                .SetQueryParam("state", state)
+                .SetFragment("wechat_redirect")
+                .ToString();
+        }
+
+        /// <summary>
+        /// <para>生成代公众号网页授权 URL。</para>
+        /// <para>REF: https://developers.weixin.qq.com/doc/oplatform/Third-party_Platforms/2.0/api/Before_Develop/Official_Accounts/official_account_website_authorization.html </para>
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="appId"></param>
+        /// <param name="redirectUrl"></param>
+        /// <param name="scope"></param>
+        /// <param name="state"></param>
+        /// <returns></returns>
+        public static string GenerateParameterizedUrlForComponentConnectOAuth2Authorize(this WechatApiClient client, string appId, string redirectUrl, string scope, string? state = null)
+        {
+            return new Url(BASE_URL)
+                .AppendPathSegments("connect", "oauth2", "authorize")
+                .SetQueryParam("appid", appId)
+                .SetQueryParam("component_appid", client.Credentials.AppId)
+                .SetQueryParam("redirect_uri", redirectUrl)
+                .SetQueryParam("response_type", "code")
+                .SetQueryParam("scope", scope)
+                .SetQueryParam("state", state)
+                .SetFragment("wechat_redirect")
+                .ToString();
+        }
     }
 }