From 59afa01c07263fd6df17657e66c2de3b7ec30f80 Mon Sep 17 00:00:00 2001
From: Redns <ljing431@163.com>
Date: Wed, 8 Jun 2022 22:23:28 +0800
Subject: [PATCH] =?UTF-8?q?=E2=9C=A8=20=E6=96=B0=E5=A2=9E=E9=82=AE?=
 =?UTF-8?q?=E7=AE=B1=E5=8F=B7=E7=94=9F=E6=88=90=E5=99=A8?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 lib/CreditCard.cs    |  2 +-
 lib/Email.cs         | 41 +++++++++++++++++++++++++++++++++++++++++
 lib/FakeSharp.csproj |  4 ++--
 lib/MobileNumber.cs  |  2 +-
 test/Program.cs      | 17 +++++++++++++++++
 5 files changed, 62 insertions(+), 4 deletions(-)
 create mode 100644 lib/Email.cs

diff --git a/lib/CreditCard.cs b/lib/CreditCard.cs
index c9d8b3a..d7b911c 100644
--- a/lib/CreditCard.cs
+++ b/lib/CreditCard.cs
@@ -34,7 +34,7 @@ public static IEnumerable<string> Generate(BinType binType = BinType.Any, int le
         {
             var fakeCardNumber = 0L;
             var fakeCardNumbers = new string[count];
-            var r = new Random(DateTime.Now.Second + DateTime.Now.Millisecond);
+            var r = new Random(DateTime.Now.Second * 1000 + DateTime.Now.Millisecond);
 
             for (int i = 0; i < count; i++)
             {
diff --git a/lib/Email.cs b/lib/Email.cs
new file mode 100644
index 0000000..9673a01
--- /dev/null
+++ b/lib/Email.cs
@@ -0,0 +1,41 @@
+namespace FakeSharp
+{
+    public class Email
+    {
+        static readonly string[] EMAIL_SUFFIX = { "163.com", "qq.com", "126.com", "139.com", "gmail.com", "yahoo.com", "msn.com",
+                                                  "hotmail.com", "aol.com", "ask.com", "live.com", "outlook.com", "163.net" };
+        static readonly char[] LEGAL_CHARACTER = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '_', 'a', 'b', 'c', 'd', 'e', 'f',
+                                                   'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
+                                                   'x', 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
+                                                   'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'};
+
+        public static IEnumerable<string> Generate(string[]? emailSuffix = null, int minLength = 8, int maxLength = 8, int count = 100)
+        {
+            // 检验输入参数
+            if(emailSuffix == null) { emailSuffix = EMAIL_SUFFIX; }
+            if(minLength <= 0) { minLength = 8; }
+            if(maxLength <= 0) { maxLength = 8; }
+            if(minLength > maxLength) { minLength = maxLength; }
+            if(count <= 0) { count = 100; }
+
+            var fakeEmails = new string[count];
+            var random = new Random(DateTime.Now.Second * 1000 + DateTime.Now.Millisecond);
+            
+            // 48-57：数字0~9
+            // 65-90：大写字母A~Z
+            // 97-122：小写字母a~z
+            // 95：下划线
+            for(int i = 0; i < count; i++)
+            {
+                fakeEmails[i] = string.Empty;
+                for(int j = 0; j < random.Next(minLength, maxLength + 1); j++)
+                {
+                    fakeEmails[i] += LEGAL_CHARACTER[random.Next(LEGAL_CHARACTER.Length)];
+                }
+                fakeEmails[i] += $"@{emailSuffix[random.Next(emailSuffix.Length)]}";
+            }
+
+            return fakeEmails;
+        }
+    }
+}
diff --git a/lib/FakeSharp.csproj b/lib/FakeSharp.csproj
index edc5150..4d86bd5 100644
--- a/lib/FakeSharp.csproj
+++ b/lib/FakeSharp.csproj
@@ -16,9 +16,9 @@
     <PackageRequireLicenseAcceptance>True</PackageRequireLicenseAcceptance>
     <PackageTags>data-generation</PackageTags>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
-    <PackageReleaseNotes>✨ 新增身份证号生成器</PackageReleaseNotes>
+    <PackageReleaseNotes>✨ 新增邮箱号生成器</PackageReleaseNotes>
     <Description>伪数据生成器，用于构造手机号、银行卡号、身份证号等数据</Description>
-    <Version>1.0.4</Version>
+    <Version>1.0.5</Version>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/lib/MobileNumber.cs b/lib/MobileNumber.cs
index f7d9d73..782cf9e 100644
--- a/lib/MobileNumber.cs
+++ b/lib/MobileNumber.cs
@@ -19,7 +19,7 @@ public class MobileNumber
         /// <returns></returns>
         public static IEnumerable<string> Generate(MAC macConfig = MAC.Any, int count = 100)
         {
-            var r = new Random(DateTime.Now.Second + DateTime.Now.Millisecond);
+            var r = new Random(DateTime.Now.Second * 1000 + DateTime.Now.Millisecond);
             var fakeNumbers = new string[count];
             for(int i = 0; i < count; i++)
             {
diff --git a/test/Program.cs b/test/Program.cs
index 81a9b95..a55c027 100644
--- a/test/Program.cs
+++ b/test/Program.cs
@@ -14,6 +14,9 @@ static void Main(string[] args)
 
             // 随机生成10个身份证号
             GenerateIDCardNumbers();
+
+            // 随机生成10个邮箱账号
+            GenerateEmails();
         }
 
         /// <summary>
@@ -59,5 +62,19 @@ static void GenerateIDCardNumbers()
                 Console.WriteLine($"[{i}]{fakeIDCardNumbers[i]}");
             }
         }
+
+        /// <summary>
+        /// 随机生成邮箱号
+        /// </summary>
+        static void GenerateEmails()
+        {
+            var fakeEmails = Email.Generate(count: 10).ToArray();
+
+            Console.WriteLine("########## 邮箱号 ##########");
+            for (int i = 0; i < fakeEmails.Length; i++)
+            {
+                Console.WriteLine($"[{i}]{fakeEmails[i]}");
+            }
+        }
     }
 }
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