feat: Adding CSharp Snippets

public/consolidated/csharp.json

@@ -1,4 +1,97 @@
 [
+    {
+        "categoryName": "Basics",
+        "snippets": [
+            {
+                "title": "Hello, World!",
+                "description": "Prints Hello, World! to the terminal.",
+                "author": "chaitanya-jvnm",
+                "tags": [
+                    "c#",
+                    "printing",
+                    "hello-world",
+                    "utility"
+                ],
+                "contributors": [],
+                "code": "public class Program {\n  public static void Main(string[] args) {\n    System.Console.WriteLine(\"Hello, World!\");\n  }\n}\n"
+            }
+        ]
+    },
+    {
+        "categoryName": "Guid Utilities",
+        "snippets": [
+            {
+                "title": "Hello, World!",
+                "description": "Generates a new GUID",
+                "author": "chaitanya-jvnm",
+                "tags": [
+                    "c#",
+                    "guid",
+                    "generate",
+                    "utility"
+                ],
+                "contributors": [],
+                "code": "public static string GenerateGuid() {\n  return Guid.NewGuid().ToString();\n}\n"
+            },
+            {
+                "title": "Hello, World!",
+                "description": "Checks if a string is a valid GUID.",
+                "author": "chaitanya-jvnm",
+                "tags": [
+                    "c#",
+                    "guid",
+                    "validate",
+                    "utility"
+                ],
+                "contributors": [],
+                "code": "public static bool IsGuid(string str) {\n  return Guid.TryParse(str, out _);\n}\n"
+            }
+        ]
+    },
+    {
+        "categoryName": "Jwt Utilities",
+        "snippets": [
+            {
+                "title": "Hello, World!",
+                "description": "Decodes a JWT.",
+                "author": "chaitanya-jvnm",
+                "tags": [
+                    "c#",
+                    "jwt",
+                    "decode",
+                    "utility"
+                ],
+                "contributors": [],
+                "code": "/// <summary>\n/// Decodes the JWT\n/// <summary>\npublic static string DecodeJwt(string token) {\n  return new JwtSecurityTokenHandler().ReadJwtToken(token).ToString();\n}\n\n//Example\nstring token = \"eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c\";\n\nstring decodedJwt = DecodeJwt(token);\n\nConsole.WriteLine(decodedJwt); //Prints {\"alg\":\"HS256\",\"typ\":\"JWT\"}.{\"sub\":\"1234567890\",\"name\":\"John Doe\",\"iat\":1516239022}\n"
+            },
+            {
+                "title": "Hello, World!",
+                "description": "Generates a new JWT.",
+                "author": "chaitanya-jvnm",
+                "tags": [
+                    "c#",
+                    "jwt",
+                    "generate",
+                    "utility"
+                ],
+                "contributors": [],
+                "code": "public static string GenerateJwt(string secret, string issuer, string audience, int expirationMinutes) {\n  var securityKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(secret));\n  var credentials = new SigningCredentials(securityKey, SecurityAlgorithms.HmacSha256);\n  var token = new JwtSecurityToken(issuer, audience, null, expires: DateTime.UtcNow.AddMinutes(expirationMinutes), signingCredentials: credentials);\n  return new JwtSecurityTokenHandler().WriteToken(token);\n}\n"
+            },
+            {
+                "title": "Hello, World!",
+                "description": "Validates a JWT.",
+                "author": "chaitanya-jvnm",
+                "tags": [
+                    "c#",
+                    "jwt",
+                    "validate",
+                    "utility"
+                ],
+                "contributors": [],
+                "code": "public static bool ValidateJwt(string token, string secret) {\n  var tokenHandler = new JwtSecurityTokenHandler();\n  var validationParameters = new TokenValidationParameters {\n    ValidateIssuerSigningKey = true,\n    IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(secret)),\n    ValidateIssuer = false,\n    ValidateAudience = false\n  };\n  try {\n    tokenHandler.ValidateToken(token, validationParameters, out _);\n    return true;\n  }\n  catch {\n    return false\n  }\n}\n\n//Example\nstring JWT = \"eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c\";\n\nstring correctSecret = \"your-256-bit-secret\";\nstring wrongSecret = \"this-is-not-the-right-secret\";\n\nConsole.WriteLine(ValidateJwt(JWT, correctSecret)) // returns True\nConsole.WriteLine(ValidateJwt(JWT, wrongSecret)) // returns False\n\n"
+            }
+        ]
+    },
     {
         "categoryName": "List Utilities",
         "snippets": [
@@ -20,6 +113,19 @@
     {
         "categoryName": "String Utilities",
         "snippets": [
+            {
+                "title": "Hello, World!",
+                "description": "Makes the first letter of a string uppercase.",
+                "author": "chaitanya-jvnm",
+                "tags": [
+                    "c#",
+                    "string",
+                    "capitalize",
+                    "utility"
+                ],
+                "contributors": [],
+                "code": "/// <summary>\n/// Capitalize the first character of the string\n/// <summary>\npublic static string Capitalize(this string str) {\n  return str.Substring(0, 1).ToUpper() + str.Substring(1);\n}\n\n//Example\nstring example = \"hello\";\nstring captializedExample = example.Capitalize();\nConsole.WriteLine(captializedExample); // prints \"Hello\"\n"
+            },
             {
                 "title": "Truncate a String",
                 "description": "Cut off a string once it reaches a determined amount of characters and add '...' to the end of the string",

snippets/csharp/basics/hello-world.md

@@ -0,0 +1,14 @@
+---
+title: Hello, World!
+description: Prints Hello, World! to the terminal.
+author: chaitanya-jvnm
+tags: c#,printing,hello-world,utility
+---
+
+```c#
+public class Program {
+  public static void Main(string[] args) {
+    System.Console.WriteLine("Hello, World!");
+  }
+}
+```

snippets/csharp/guid-utilities/generate-guid.md

@@ -0,0 +1,12 @@
+---
+title: Hello, World!
+description: Generates a new GUID
+author: chaitanya-jvnm
+tags: c#,guid,generate,utility
+---
+
+```c#
+public static string GenerateGuid() {
+  return Guid.NewGuid().ToString();
+}
+```

snippets/csharp/guid-utilities/validate-guid.md

@@ -0,0 +1,12 @@
+---
+title: Hello, World!
+description: Checks if a string is a valid GUID.
+author: chaitanya-jvnm
+tags: c#,guid,validate,utility
+---
+
+```c#
+public static bool IsGuid(string str) {
+  return Guid.TryParse(str, out _);
+}
+```

snippets/csharp/jwt-utilities/decode-jwt.md

@@ -0,0 +1,22 @@
+---
+title: Hello, World!
+description: Decodes a JWT.
+author: chaitanya-jvnm
+tags: c#,jwt,decode,utility
+---
+
+```c#
+/// <summary>
+/// Decodes the JWT
+/// <summary>
+public static string DecodeJwt(string token) {
+  return new JwtSecurityTokenHandler().ReadJwtToken(token).ToString();
+}
+
+//Example
+string token = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c";
+
+string decodedJwt = DecodeJwt(token);
+
+Console.WriteLine(decodedJwt); //Prints {"alg":"HS256","typ":"JWT"}.{"sub":"1234567890","name":"John Doe","iat":1516239022}
+```

snippets/csharp/jwt-utilities/generate-jwt.md

@@ -0,0 +1,15 @@
+---
+title: Hello, World!
+description: Generates a new JWT.
+author: chaitanya-jvnm
+tags: c#,jwt,generate,utility
+---
+
+```c#
+public static string GenerateJwt(string secret, string issuer, string audience, int expirationMinutes) {
+  var securityKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(secret));
+  var credentials = new SigningCredentials(securityKey, SecurityAlgorithms.HmacSha256);
+  var token = new JwtSecurityToken(issuer, audience, null, expires: DateTime.UtcNow.AddMinutes(expirationMinutes), signingCredentials: credentials);
+  return new JwtSecurityTokenHandler().WriteToken(token);
+}
+```

snippets/csharp/jwt-utilities/validate-jwt.md

@@ -0,0 +1,35 @@
+---
+title: Hello, World!
+description: Validates a JWT.
+author: chaitanya-jvnm
+tags: c#,jwt,validate,utility
+---
+
+```c#
+public static bool ValidateJwt(string token, string secret) {
+  var tokenHandler = new JwtSecurityTokenHandler();
+  var validationParameters = new TokenValidationParameters {
+    ValidateIssuerSigningKey = true,
+    IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(secret)),
+    ValidateIssuer = false,
+    ValidateAudience = false
+  };
+  try {
+    tokenHandler.ValidateToken(token, validationParameters, out _);
+    return true;
+  }
+  catch {
+    return false
+  }
+}
+
+//Example
+string JWT = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c";
+
+string correctSecret = "your-256-bit-secret";
+string wrongSecret = "this-is-not-the-right-secret";
+
+Console.WriteLine(ValidateJwt(JWT, correctSecret)) // returns True
+Console.WriteLine(ValidateJwt(JWT, wrongSecret)) // returns False
+
+```

snippets/csharp/string-utilities/capitalize-first-letter.md

@@ -0,0 +1,20 @@
+---
+title: Hello, World!
+description: Makes the first letter of a string uppercase.
+author: chaitanya-jvnm
+tags: c#,string,capitalize,utility
+---
+
+```c#
+/// <summary>
+/// Capitalize the first character of the string
+/// <summary>
+public static string Capitalize(this string str) {
+  return str.Substring(0, 1).ToUpper() + str.Substring(1);
+}
+
+//Example
+string example = "hello";
+string captializedExample = example.Capitalize();
+Console.WriteLine(captializedExample); // prints "Hello"
+```