Implemented HashService and tests

LiteCharms.Features.MidrandBooks.Seed/CategorySeederService.cs

@@ -3,7 +3,7 @@ using LiteCharms.Features.MidrandBooks.Products;
 
 namespace LiteCharms.Features.MidrandBooks.Seed;
 
-public class CategorySeederService(CategoryService categoryService, ProductService productService, IFeatureManager features,
+public sealed class CategorySeederService(CategoryService categoryService, ProductService productService, IFeatureManager features,
     ILogger<CategorySeederService> logger) : BackgroundService
 {
     protected override async Task ExecuteAsync(CancellationToken stoppingToken)

LiteCharms.Features.MidrandBooks.Seed/Configuration/CdnSettings.cs

@@ -1,6 +1,6 @@
 namespace LiteCharms.Features.MidrandBooks.Seed.Configuration;
 
-public class CdnSettings
+public sealed class CdnSettings
 {
     public string? BaseCdn { get; set; }
 

LiteCharms.Features.MidrandBooks.Seed/CustomerSeederService.cs

@@ -5,7 +5,7 @@ using LiteCharms.Features.MidrandBooks.Orders.Models;
 
 namespace LiteCharms.Features.MidrandBooks.Seed;
 
-public class CustomerSeederService(CustomerService customerService, OrderService orderService, IFeatureManager features,
+public sealed class CustomerSeederService(CustomerService customerService, OrderService orderService, IFeatureManager features,
     ILogger<CustomerSeederService> logger) : BackgroundService
 {
     protected override async Task ExecuteAsync(CancellationToken stoppingToken)

LiteCharms.Features.MidrandBooks.Seed/ProductsSeederService.cs

@@ -5,7 +5,7 @@ using LiteCharms.Features.MidrandBooks.Seed.Configuration;
 
 namespace LiteCharms.Features.MidrandBooks.Seed;
 
-public class ProductsSeederService(ProductService productService, AuthorService authorService, BooksService booksService,
+public sealed class ProductsSeederService(ProductService productService, AuthorService authorService, BooksService booksService,
     IFeatureManager features, IOptions<CdnSettings> options, ILogger<ProductsSeederService> logger) : BackgroundService
 {
     private readonly CdnSettings cdnSettings = options.Value;

LiteCharms.Features.MidrandBooks.Tests/AuthorServiceFeatureTests.cs

@@ -5,7 +5,7 @@ using LiteCharms.Features.Models;
 
 namespace LiteCharms.Features.MidrandBooks.Tests;
 
-public class AuthorServiceFeatureTests(Fixture fixture, ITestOutputHelper output) : IClassFixture<Fixture>
+public class AuthorServiceFeatureTests(Fixture fixture) : IClassFixture<Fixture>
 {
     private readonly AuthorService authorService = fixture.Services.GetRequiredService<AuthorService>();
 

LiteCharms.Features.MidrandBooks.Tests/Common/Fixture.cs

@@ -1,5 +1,4 @@
 using LiteCharms.Features.Extensions;
-using LiteCharms.Features.MidrandBooks.Abstractions;
 using LiteCharms.Features.MidrandBooks.Extensions;
 
 namespace LiteCharms.Features.MidrandBooks.Tests.Common;

LiteCharms.Features.TechShop/Leads/LeadService.cs

@@ -1,9 +1,8 @@
-using LiteCharms.Features.Extensions;
+using LiteCharms.Features.Hasher;
 using LiteCharms.Features.Models;
 using LiteCharms.Features.TechShop.Extensions;
 using LiteCharms.Features.TechShop.Leads.Models;
 using LiteCharms.Features.TechShop.Postgres;
-using static LiteCharms.Features.Extensions.Hash;
 
 namespace LiteCharms.Features.TechShop.Leads;
 
@@ -29,7 +28,7 @@ public class LeadService(IDbContextFactory<ShopDbContext> contextFactory)
                 FeedItemId = request.FeedItemId,
                 Status = LeadStatus.New,
                 TargetId = request.TargetId,
-                AttributionHash = StringToSha256Hash.Invoke($"{request.ClickId}{request.AppClickId}{request.WebClickId}")
+                AttributionHash = HashService.StringToSha256Hash.Invoke($"{request.ClickId}{request.AppClickId}{request.WebClickId}")
             });
 
             return await context.SaveChangesAsync(cancellationToken) > 0

LiteCharms.Features.Tests/Fixture.cs

@@ -26,6 +26,7 @@ public class Fixture : IDisposable
             .AddGarageS3(Configuration)
             .AddEmailServices(Configuration)
             .AddSingleton(Configuration)
+            .AddHashServices(Configuration)
             .BuildServiceProvider();
 
         Mediator = Services.GetRequiredService<IMediator>();

LiteCharms.Features.Tests/HashServiceFeatureTests.cs

@@ -0,0 +1,152 @@
+using LiteCharms.Features.Hasher;
+
+namespace LiteCharms.Features.Tests;
+
+public class HashServiceFeatureTests(Fixture fixture) : IClassFixture<Fixture>
+{
+    private readonly HashService hashService = fixture.Services.GetRequiredService<HashService>();
+    private readonly string payfastPassphrase = fixture.Configuration.GetSection("HasherSettings:PayfastPassphrase").Value!;
+
+    [Fact]
+    public void StringToSha256Hash_Should_GenerateHash()
+    {
+        var input = "We are the best";
+        var expectedHash = "96E17275B53F6BEB7A0D1C4F789F226D3C71CBE398585F25B3028F2B432E78AB";
+
+        var result = HashService.StringToSha256Hash(input);
+
+        Assert.NotNull(result);
+        Assert.True(HashService.IsSha256Hash(result));
+        Assert.Equal(expectedHash, result);
+    }
+
+    [Fact]
+    public void StreamToSha256Hash_Should_GenerateHash()
+    {
+        var input = "We are successful";
+        using var stream = new MemoryStream(Encoding.UTF8.GetBytes(input));
+        var expectedHash = "C27872EE494B09D72203C98FC858268F3CD3492D62AA7B766A873520C2C73AFB";
+
+        var result = HashService.StreamToSha256Hash(stream);
+
+        Assert.NotNull(result);
+        Assert.True(HashService.IsSha256Hash(result));
+        Assert.Equal(expectedHash, result);
+    }
+
+    [Fact]
+    public void BytesToSha256Hash_Should_GenerateHash()
+    {
+        var inputBytes = Encoding.UTF8.GetBytes("We are wealthy");
+        var expectedHash = "3876BF98F6E4A8E42B22C40415687D6FF13F0E887F3F508B71852298FC665737";
+
+        var result = HashService.BytesToSha256Hash(inputBytes);
+
+        Assert.NotNull(result);
+        Assert.True(HashService.IsSha256Hash(result));
+        Assert.Equal(expectedHash, result);
+    }
+
+    [Fact]
+    public void ToMd5Hash_Should_GenerateHash()
+    {
+        var input = "We manifest our desired destiny";
+        var expectedMd5Lowercase = "6c7816869bcebe4634f7afe9c66dfa08";
+
+        var result = HashService.ToMd5Hash(input);
+
+        Assert.True(result.IsSuccess);
+        Assert.True(HashService.IsMd5Hash(result.Value));
+        Assert.Equal(expectedMd5Lowercase, result.Value);
+    }
+
+    [Fact]
+    public void VerifyPayfastWebhookSignature_Should_GenerateHash()
+    {
+        var paymentId = hashService.HashEncodeLongId(1001).Value;
+
+        var incomingForm = new Dictionary<string, string>
+        {
+            { "m_payment_id", paymentId },
+            { "amount", "350.00" },
+            { "item_name", "System Architecture Book" }
+        };
+
+        var rawPayload = $"amount=350.00&item_name=System+Architecture+Book&m_payment_id={paymentId}&passphrase={payfastPassphrase}";
+        var generatedSignature = HashService.ToMd5Hash(rawPayload).Value;
+
+        var result = hashService.VerifyPayfastWebhookSignature(incomingForm, generatedSignature);
+
+        Assert.True(result.IsSuccess);
+        Assert.True(result.Value);
+    }
+
+    [Fact]
+    public void HashEncodeHex_Should_GenerateHash()
+    {
+        var validHexInput = "DEADBEEF42";
+
+        var result = hashService.HashEncodeHex(validHexInput);
+
+        Assert.True(result.IsSuccess);
+        Assert.False(string.IsNullOrWhiteSpace(result.Value));
+    }
+
+    [Fact]
+    public void HashEncodeIntId_Should_GenerateHash()
+    {
+        int targetId = 42;
+
+        var result = hashService.HashEncodeIntId(targetId);
+
+        Assert.True(result.IsSuccess);
+        Assert.True(result.Value.Length >= 10);
+    }
+
+    [Fact]
+    public void HashEncodeLongId_Should_GenerateHash()
+    {
+        long targetId = 9904185012L;
+
+        var result = hashService.HashEncodeLongId(targetId);
+
+        Assert.True(result.IsSuccess);
+        Assert.True(result.Value.Length >= 10);
+    }
+
+    [Fact]
+    public void DecodeIntIdHash_Should_GenerateHash()
+    {
+        int originalId = 88041;
+        var hashedString = hashService.HashEncodeIntId(originalId).Value;
+
+        var result = hashService.DecodeIntIdHash(hashedString);
+
+        Assert.True(result.IsSuccess);
+        Assert.Equal(originalId, result.Value);
+    }
+
+    [Fact]
+    public void DecodeLongIdHash_Should_GenerateHash()
+    {
+        long originalId = 9081230491823L;
+        var hashedString = hashService.HashEncodeLongId(originalId).Value;
+
+        var result = hashService.DecodeLongIdHash(hashedString);
+
+        Assert.True(result.IsSuccess);
+        Assert.Equal(originalId, result.Value);
+    }
+
+    [Fact]
+    public void DecodeHexHash_Should_GenerateHash()
+    {
+        var originalHex = "ABCDEF12345";
+        var hashedString = hashService.HashEncodeHex(originalHex).Value;
+
+        var result = hashService.DecodeHexHash(hashedString);
+
+        Assert.True(result.IsSuccess);
+        Assert.Equal(originalHex, result.Value);
+    }
+}

LiteCharms.Features.Tests/LiteCharms.Features.Tests.csproj

@@ -27,6 +27,8 @@
 
   <!-- Global Usings -->
   <ItemGroup>
+    <Using Include="System.Net" />
+    <Using Include="System.Text" />
     <Using Include="Mediator" />
     <Using Include="Xunit.Abstractions" />
     <Using Include="Microsoft.Extensions.DependencyInjection" />

LiteCharms.Features/Hasher/HashService.cs

@@ -7,25 +7,37 @@ public sealed partial class HashService(IHashids hasher, IOptions<HasherSettings
 {
     private readonly HasherSettings settings = options.Value;
 
-    [System.Text.RegularExpressions.GeneratedRegex(@"\A\b[0-9a-fA-F]+\b\Z")]
-    private static partial System.Text.RegularExpressions.Regex HexHashRegex();
+    [GeneratedRegex(@"\A\b[0-9a-fA-F]+\b\Z")]
+    private static partial Regex HexHashRegex { get; }
 
-    public static readonly Func<string?, string?> StringToSha256Hash = (input) =>
-       string.IsNullOrEmpty(input) ? null : Convert.ToHexString(SHA256.HashData(Encoding.UTF8.GetBytes(input)));
+    [GeneratedRegex(@"\A[0-9a-fA-F]{32}\Z", RegexOptions.None, matchTimeoutMilliseconds: 100)]
+    private static partial Regex Md5Regex { get; }
 
-    public static readonly Func<Stream, string?> StreamToSha256Hash = (stream) =>
+    [GeneratedRegex(@"\A[0-9a-fA-F]{64}\Z", RegexOptions.None, matchTimeoutMilliseconds: 100)]
+    private static partial Regex Sha256Regex { get; }
+
+    public static bool IsMd5Hash(string? value) =>
+        !string.IsNullOrWhiteSpace(value) && Md5Regex.IsMatch(value);
+
+    public static bool IsSha256Hash(string? value) =>
+        !string.IsNullOrWhiteSpace(value) && Sha256Regex.IsMatch(value);
+
+    public static string? StringToSha256Hash(string? input) =>
+        string.IsNullOrEmpty(input) ? null : Convert.ToHexString(SHA256.HashData(Encoding.UTF8.GetBytes(input)));
+
+    public static string? StreamToSha256Hash(Stream stream) =>
         stream is null ? null : Convert.ToHexString(SHA256.HashData(stream));
 
-    public static readonly Func<byte[], string?> BytesToSha256Hash = (bytes) =>
+    public static string? BytesToSha256Hash(byte[] bytes) =>
         bytes is null ? null : Convert.ToHexString(SHA256.HashData(bytes));
-        
-    public static Result<string> ComputeMd5Hash(string input)
+
+    public static Result<string> ToMd5Hash(string input)
     {
         if (string.IsNullOrEmpty(input))
             return Result.Fail<string>("Input content cannot be null or empty for MD5 processing.");
 
         byte[] bytes = MD5.HashData(Encoding.UTF8.GetBytes(input));
-        return Result.Ok(Convert.ToHexString(bytes).ToLowerInvariant()); 
+        return Result.Ok(Convert.ToHexString(bytes).ToLowerInvariant());
     }
 
     public Result<bool> VerifyPayfastWebhookSignature(IDictionary<string, string> incomingFormData, string incomingSignature)
@@ -36,16 +48,16 @@ public sealed partial class HashService(IHashids hasher, IOptions<HasherSettings
                 return Result.Fail<bool>("Validation failed: Missing signature string parameter.");
 
             var sortedFields = incomingFormData
-                .Where(field => field.Key != "signature")
-                .OrderBy(field => field.Key)
-                .Select(field => $"{field.Key}={Uri.EscapeDataString(field.Value).Replace("%20", "+")}");
+                .Where(field => !string.Equals(field.Key, "signature", StringComparison.OrdinalIgnoreCase))
+                .OrderBy(field => field.Key, StringComparer.Ordinal)
+                .Select(field => $"{field.Key}={WebUtility.UrlEncode(field.Value)}");
 
             string payload = string.Join("&", sortedFields);
 
             if (!string.IsNullOrWhiteSpace(settings.PayfastPassphrase))
-                payload += $"&passphrase={Uri.EscapeDataString(settings.PayfastPassphrase).Replace("%20", "+")}";
+                payload += $"&passphrase={WebUtility.UrlEncode(settings.PayfastPassphrase)}";
 
-            var localHashResult = ComputeMd5Hash(payload);
+            var localHashResult = ToMd5Hash(payload);
 
             if (!localHashResult.IsSuccess)
                 return Result.Fail<bool>(localHashResult.Errors);
@@ -60,9 +72,9 @@ public sealed partial class HashService(IHashids hasher, IOptions<HasherSettings
         }
     }
 
-    public Result<string> HashEncodeHex(string input) => string.IsNullOrWhiteSpace(input) || !HexHashRegex().IsMatch(input)
-        ? Result.Fail<string>("Input must be a valid hexadecimal string.")
-        : Result.Ok(hasher.EncodeHex(input));
+    public Result<string> HashEncodeHex(string input) => string.IsNullOrWhiteSpace(input) || !HexHashRegex.IsMatch(input)
+            ? Result.Fail<string>("Input must be a valid hexadecimal string.")
+            : Result.Ok(hasher.EncodeHex(input));
 
     public Result<string> HashEncodeIntId(int id) => id < 0
         ? Result.Fail<string>("Id cannot be negative.")

LiteCharms.Features/LiteCharms.Features.csproj

@@ -148,6 +148,8 @@
   <!-- Shared Usings -->
   <ItemGroup>
     <Using Include="HashidsNet" />
+    <Using Include="System.Net" />
+    <Using Include="System.Text.RegularExpressions" />
     <Using Include="System.Globalization" />
     <Using Include="Microsoft.AspNetCore.Builder" />
     <Using Include="Microsoft.Extensions.Hosting" />

LiteCharms.Features/Models/SearchState.cs

@@ -1,12 +0,0 @@
-namespace LiteCharms.Features.Models;
-
-public class SearchState
-{
-    public string Query { get; private set; } = string.Empty;
-
-    public event Action? OnSearchSubmitted;
-
-    public void UpdateQuery(string newQuery) => Query = newQuery;
-
-    public void SubmitSearch() => OnSearchSubmitted?.Invoke();
-}