initial commit

ConfigBackEnd/Attributes/AuthorizeAttribute.cs

@@ -0,0 +1,18 @@
+namespace Indotalent.ConfigBackEnd.Attributes;
+
+[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = true, Inherited = true)]
+public class AuthorizeAttribute : Attribute
+{
+    public string Role { get; set; } = string.Empty;
+    public string Permission { get; set; } = string.Empty;
+    public string Policy { get; set; } = string.Empty;
+
+    public AuthorizeAttribute()
+    {
+    }
+
+    public AuthorizeAttribute(string role)
+    {
+        Role = role;
+    }
+}

ConfigBackEnd/Behaviours/AuthorizationBehaviour.cs

@@ -0,0 +1,68 @@
+namespace Indotalent.ConfigBackEnd.Behaviours;
+
+using Indotalent.ConfigBackEnd.Attributes;
+using Indotalent.ConfigBackEnd.Exceptions;
+using Indotalent.ConfigBackEnd.Interfaces;
+using MediatR;
+using System.Reflection;
+
+public class AuthorizationBehaviour<TRequest, TResponse> : IPipelineBehavior<TRequest, TResponse>
+    where TRequest : IRequest<TResponse>
+{
+    private readonly ICurrentUserService _currentUserService;
+
+    public AuthorizationBehaviour(ICurrentUserService currentUserService)
+    {
+        _currentUserService = currentUserService;
+    }
+
+    public async Task<TResponse> Handle(TRequest request, RequestHandlerDelegate<TResponse> next, CancellationToken cancellationToken)
+    {
+        var authorizeAttributes = request.GetType().GetCustomAttributes<AuthorizeAttribute>();
+
+        if (authorizeAttributes.Any())
+        {
+            if (_currentUserService.UserId == null)
+            {
+                throw new UnauthorizedAccessException();
+            }
+
+            var authorizeAttributesWithRoles = authorizeAttributes.Where(a => !string.IsNullOrWhiteSpace(a.Role));
+
+            if (authorizeAttributesWithRoles.Any())
+            {
+                var authorized = false;
+                foreach (var role in authorizeAttributesWithRoles.Select(a => a.Role))
+                {
+                    var isInRole = await _currentUserService.IsInRoleAsync(role.Trim());
+                    if (isInRole)
+                    {
+                        authorized = true;
+                        break;
+                    }
+                }
+
+                if (!authorized)
+                {
+                    throw new ForbiddenAccessException();
+                }
+            }
+
+            var authorizeAttributesWithPermissions = authorizeAttributes.Where(a => !string.IsNullOrWhiteSpace(a.Permission));
+
+            if (authorizeAttributesWithPermissions.Any())
+            {
+                foreach (var permission in authorizeAttributesWithPermissions.Select(a => a.Permission))
+                {
+                    var hasPermission = await _currentUserService.HasPermissionAsync(permission.Trim());
+                    if (!hasPermission)
+                    {
+                        throw new ForbiddenAccessException();
+                    }
+                }
+            }
+        }
+
+        return await next();
+    }
+}

ConfigBackEnd/Behaviours/LoggingBehaviour.cs

@@ -0,0 +1,30 @@
+namespace Indotalent.ConfigBackEnd.Behaviours;
+
+using Indotalent.ConfigBackEnd.Interfaces;
+using MediatR.Pipeline;
+using Microsoft.Extensions.Logging;
+
+public class LoggingBehaviour<TRequest> : IRequestPreProcessor<TRequest>
+    where TRequest : notnull
+{
+    private readonly ILogger _logger;
+    private readonly ICurrentUserService _currentUserService;
+
+    public LoggingBehaviour(ILogger<TRequest> logger, ICurrentUserService currentUserService)
+    {
+        _logger = logger;
+        _currentUserService = currentUserService;
+    }
+
+    public Task Process(TRequest request, CancellationToken cancellationToken)
+    {
+        var requestName = typeof(TRequest).Name;
+        var userId = _currentUserService.UserId ?? string.Empty;
+        var userName = _currentUserService.UserName ?? string.Empty;
+
+        _logger.LogInformation("Request: {Name} {UserId} {UserName} {@Request}",
+            requestName, userId, userName, request);
+
+        return Task.CompletedTask;
+    }
+}

ConfigBackEnd/Behaviours/PerformanceBehaviour.cs

@@ -0,0 +1,46 @@
+namespace Indotalent.ConfigBackEnd.Behaviours;
+
+using Indotalent.ConfigBackEnd.Interfaces;
+using MediatR;
+using Microsoft.Extensions.Logging;
+using System.Diagnostics;
+
+public class PerformanceBehaviour<TRequest, TResponse> : IPipelineBehavior<TRequest, TResponse>
+    where TRequest : IRequest<TResponse>
+{
+    private readonly Stopwatch _timer;
+    private readonly ILogger<TRequest> _logger;
+    private readonly ICurrentUserService _currentUserService;
+
+    public PerformanceBehaviour(
+        ILogger<TRequest> logger,
+        ICurrentUserService currentUserService)
+    {
+        _timer = new Stopwatch();
+        _logger = logger;
+        _currentUserService = currentUserService;
+    }
+
+    public async Task<TResponse> Handle(TRequest request, RequestHandlerDelegate<TResponse> next, CancellationToken cancellationToken)
+    {
+        _timer.Start();
+
+        var response = await next();
+
+        _timer.Stop();
+
+        var elapsedMilliseconds = _timer.ElapsedMilliseconds;
+
+        if (elapsedMilliseconds > 500)
+        {
+            var requestName = typeof(TRequest).Name;
+            var userId = _currentUserService.UserId ?? string.Empty;
+            var userName = _currentUserService.UserName ?? string.Empty;
+
+            _logger.LogWarning("Long Running Request: {Name} ({ElapsedMilliseconds} milliseconds) {@UserId} {@UserName} {@Request}",
+                requestName, elapsedMilliseconds, userId, userName, request);
+        }
+
+        return response;
+    }
+}

ConfigBackEnd/Behaviours/UnhandledExceptionBehaviour.cs

@@ -0,0 +1,33 @@
+namespace Indotalent.ConfigBackEnd.Behaviours;
+
+using Indotalent.Shared.Consts;
+using MediatR;
+using Microsoft.Extensions.Logging;
+
+public class UnhandledExceptionBehaviour<TRequest, TResponse> : IPipelineBehavior<TRequest, TResponse>
+    where TRequest : IRequest<TResponse>
+{
+    private readonly ILogger<TRequest> _logger;
+
+    public UnhandledExceptionBehaviour(ILogger<TRequest> logger)
+    {
+        _logger = logger;
+    }
+
+    public async Task<TResponse> Handle(TRequest request, RequestHandlerDelegate<TResponse> next, CancellationToken cancellationToken)
+    {
+        try
+        {
+            return await next();
+        }
+        catch (Exception ex)
+        {
+            var requestName = typeof(TRequest).Name;
+
+            _logger.LogError(ex, GlobalConsts.BehaviourError + " {Name} {@Request}",
+                requestName, request);
+
+            throw;
+        }
+    }
+}

ConfigBackEnd/Behaviours/ValidationBehaviour.cs

@@ -0,0 +1,42 @@
+namespace Indotalent.ConfigBackEnd.Behaviours;
+
+using FluentValidation;
+using MediatR;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+
+public class ValidationBehaviour<TRequest, TResponse> : IPipelineBehavior<TRequest, TResponse>
+    where TRequest : IRequest<TResponse>
+{
+    private readonly IEnumerable<IValidator<TRequest>> _validators;
+
+    public ValidationBehaviour(IEnumerable<IValidator<TRequest>> validators)
+    {
+        _validators = validators;
+    }
+
+    public async Task<TResponse> Handle(TRequest request, RequestHandlerDelegate<TResponse> next, CancellationToken cancellationToken)
+    {
+        if (_validators.Any())
+        {
+            var context = new ValidationContext<TRequest>(request);
+
+            var validationResults = await Task.WhenAll(
+                _validators.Select(v => v.ValidateAsync(context, cancellationToken)));
+
+            var failures = validationResults
+                .SelectMany(r => r.Errors)
+                .Where(f => f != null)
+                .ToList();
+
+            if (failures.Count != 0)
+            {
+                throw new ValidationException(failures);
+            }
+        }
+
+        return await next();
+    }
+}

ConfigBackEnd/DI.cs

@@ -0,0 +1,30 @@
+namespace Indotalent.ConfigBackEnd;
+
+using FluentValidation;
+using Indotalent.ConfigBackEnd.Behaviours;
+using MediatR;
+using MediatR.Pipeline;
+using Microsoft.Extensions.DependencyInjection;
+
+public static class DI
+{
+    public static IServiceCollection AddConfigBackEndDI(this IServiceCollection services)
+    {
+        services.AddMediatR(cfg =>
+        {
+            cfg.RegisterServicesFromAssembly(typeof(DI).Assembly);
+
+            cfg.AddRequestPreProcessor(typeof(IRequestPreProcessor<>), typeof(LoggingBehaviour<>));
+            cfg.AddBehavior(typeof(IPipelineBehavior<,>), typeof(UnhandledExceptionBehaviour<,>));
+            cfg.AddBehavior(typeof(IPipelineBehavior<,>), typeof(PerformanceBehaviour<,>));
+            cfg.AddBehavior(typeof(IPipelineBehavior<,>), typeof(ValidationBehaviour<,>));
+            cfg.AddBehavior(typeof(IPipelineBehavior<,>), typeof(AuthorizationBehaviour<,>));
+
+            cfg.Lifetime = ServiceLifetime.Scoped;
+        });
+
+        services.AddValidatorsFromAssembly(typeof(DI).Assembly);
+
+        return services;
+    }
+}

ConfigBackEnd/Exceptions/AlreadyExistsExceptions.cs

@@ -0,0 +1,24 @@
+namespace Indotalent.ConfigBackEnd.Exceptions;
+
+public class AlreadyExistsException : Exception
+{
+    public AlreadyExistsException()
+        : base()
+    {
+    }
+
+    public AlreadyExistsException(string message)
+        : base(message)
+    {
+    }
+
+    public AlreadyExistsException(string message, Exception innerException)
+        : base(message, innerException)
+    {
+    }
+
+    public AlreadyExistsException(string name, object key)
+        : base($"Entity \"{name}\" ({key}) already exists.")
+    {
+    }
+}

ConfigBackEnd/Exceptions/ForbiddenAccessException.cs

@@ -0,0 +1,17 @@
+namespace Indotalent.ConfigBackEnd.Exceptions;
+
+public class ForbiddenAccessException : Exception
+{
+    public ForbiddenAccessException() : base()
+    {
+    }
+
+    public ForbiddenAccessException(string message) : base(message)
+    {
+    }
+
+    public ForbiddenAccessException(string message, Exception innerException)
+        : base(message, innerException)
+    {
+    }
+}

ConfigBackEnd/Exceptions/MismatchException.cs

@@ -0,0 +1,24 @@
+namespace Indotalent.ConfigBackEnd.Exceptions;
+
+public class MismatchException : Exception
+{
+    public MismatchException()
+        : base()
+    {
+    }
+
+    public MismatchException(string message)
+        : base(message)
+    {
+    }
+
+    public MismatchException(string message, Exception innerException)
+        : base(message, innerException)
+    {
+    }
+
+    public MismatchException(string name, object expected, object actual)
+        : base($"Mismatch detected for \"{name}\". Expected: {expected}, but received: {actual}.")
+    {
+    }
+}

ConfigBackEnd/Exceptions/NotFoundException.cs

@@ -0,0 +1,24 @@
+namespace Indotalent.ConfigBackEnd.Exceptions;
+
+public class NotFoundException : Exception
+{
+    public NotFoundException()
+        : base()
+    {
+    }
+
+    public NotFoundException(string message)
+        : base(message)
+    {
+    }
+
+    public NotFoundException(string message, Exception innerException)
+        : base(message, innerException)
+    {
+    }
+
+    public NotFoundException(string name, object key)
+        : base($"Entity \"{name}\" ({key}) was not found.")
+    {
+    }
+}

ConfigBackEnd/Exceptions/ValidationException.cs

@@ -0,0 +1,36 @@
+namespace Indotalent.ConfigBackEnd.Exceptions;
+
+using FluentValidation.Results;
+using System.Collections.Generic;
+using System.Linq;
+
+public class ValidationException : Exception
+{
+    public IDictionary<string, string[]> Errors { get; }
+
+    public ValidationException()
+        : base("One or more validation failures have occurred.")
+    {
+        Errors = new Dictionary<string, string[]>();
+    }
+
+    public ValidationException(IEnumerable<ValidationFailure> failures)
+        : this()
+    {
+        Errors = failures
+            .GroupBy(e => e.PropertyName, e => e.ErrorMessage)
+            .ToDictionary(failureGroup => failureGroup.Key, failureGroup => failureGroup.ToArray());
+    }
+
+    public ValidationException(string message)
+        : base(message)
+    {
+        Errors = new Dictionary<string, string[]>();
+    }
+
+    public ValidationException(string message, Exception innerException)
+        : base(message, innerException)
+    {
+        Errors = new Dictionary<string, string[]>();
+    }
+}

ConfigBackEnd/Extensions/DateTimeExtensions.cs

@@ -0,0 +1,14 @@
+namespace Indotalent.ConfigBackEnd.Extensions;
+
+public static class DateTimeExtensions
+{
+    private const string DefaultFormat = "dd MMM yyyy, HH:mm";
+
+    public static string ToString(this DateTimeOffset? dateTimeOffset, string format = DefaultFormat)
+    {
+        if (!dateTimeOffset.HasValue) return "-";
+
+        return dateTimeOffset.Value.ToLocalTime().ToString(format);
+    }
+
+}

ConfigBackEnd/Extensions/EnumExtension.cs

@@ -0,0 +1,20 @@
+using System.ComponentModel;
+using System.Reflection;
+
+namespace Indotalent.ConfigBackEnd.Extensions;
+
+public static class EnumExtension
+{
+    public static string GetDescription(this Enum value)
+    {
+        var field = value.GetType().GetField(value.ToString());
+        if (field == null)
+        {
+            return value.ToString();
+        }
+
+        var attribute = field.GetCustomAttribute<DescriptionAttribute>();
+
+        return attribute == null ? value.ToString() : attribute.Description;
+    }
+}

ConfigBackEnd/Extensions/GenericExtensions.cs

@@ -0,0 +1,86 @@
+namespace Indotalent.ConfigBackEnd.Extensions;
+
+using Indotalent.Shared.Models;
+using Microsoft.AspNetCore.Http;
+using System.Text.Json;
+
+public static class GenericExtensions
+{
+    public static bool IsNullOrEmpty<T>(this IEnumerable<T>? enumerable)
+    {
+        return enumerable == null || !enumerable.Any();
+    }
+
+    public static T? ToObject<T>(this string json)
+    {
+        if (string.IsNullOrWhiteSpace(json)) return default;
+
+        return JsonSerializer.Deserialize<T>(json, new JsonSerializerOptions
+        {
+            PropertyNameCaseInsensitive = true
+        });
+    }
+
+    public static string ToJson<T>(this T obj)
+    {
+        return JsonSerializer.Serialize(obj);
+    }
+
+    public static TDestination MapTo<TDestination>(this object source)
+        where TDestination : new()
+    {
+        var json = JsonSerializer.Serialize(source);
+        return JsonSerializer.Deserialize<TDestination>(json) ?? new TDestination();
+    }
+
+    public static string ToCurrency(this decimal value, string culture = "id-ID")
+    {
+        return value.ToString("C0", new System.Globalization.CultureInfo(culture));
+    }
+
+    public static bool IsBetween<T>(this T value, T low, T high) where T : IComparable<T>
+    {
+        return value.CompareTo(low) >= 0 && value.CompareTo(high) <= 0;
+    }
+
+    public static IResult ToApiResponse<T>(this PagedList<T> result)
+    {
+        return Results.Ok(new ApiResponse<List<T>>
+        {
+            IsSuccess = true,
+            StatusCode = 200,
+            Value = result.Value,
+            Pagination = new PaginationMetadata
+            {
+                Count = result.Count,
+                Top = result.Top,
+                Skip = result.Skip
+            },
+            ServerTime = DateTime.UtcNow
+        });
+    }
+
+    public static IResult ToApiResponse<T>(this T? result, string? message = null, int statusCode = 200)
+    {
+        if (result == null)
+        {
+            return Results.NotFound(new ApiResponse<T>
+            {
+                IsSuccess = false,
+                StatusCode = 404,
+                Message = message ?? "Data not found",
+                ServerTime = DateTime.UtcNow
+            });
+        }
+
+        return Results.Ok(new ApiResponse<T>
+        {
+            IsSuccess = true,
+            StatusCode = statusCode,
+            Message = message,
+            Value = result,
+            Pagination = null,
+            ServerTime = DateTime.UtcNow
+        });
+    }
+}

ConfigBackEnd/Extensions/IQueryableExtensions.cs

@@ -0,0 +1,63 @@
+namespace Indotalent.ConfigBackEnd.Extensions;
+
+using Indotalent.Data.Interfaces;
+using Indotalent.Shared.Models;
+using Microsoft.EntityFrameworkCore;
+using System.Linq.Expressions;
+
+public static class IQueryableExtensions
+{
+    public static IQueryable<T> WhereIf<T>(
+        this IQueryable<T> query,
+        bool condition,
+        Expression<Func<T, bool>> predicate)
+    {
+        return condition ? query.Where(predicate) : query;
+    }
+
+    public static async Task<PagedList<T>> ToPagedListAsync<T>(
+            this IQueryable<T> query,
+            int skip,
+            int top)
+    {
+        top = top <= 0 ? 5 : top;
+        skip = skip < 0 ? 0 : skip;
+
+        var count = await query.CountAsync();
+
+        var items = await query
+            .Skip(skip)
+            .Take(top)
+            .ToListAsync();
+
+        return new PagedList<T>(items, count, skip, top);
+    }
+
+    public static IQueryable<T> OrderByPropertyName<T>(
+        this IQueryable<T> query,
+        string? propertyName,
+        bool isDescending)
+    {
+        if (string.IsNullOrWhiteSpace(propertyName)) return query;
+
+        var parameter = Expression.Parameter(typeof(T), "x");
+        var property = Expression.Property(parameter, propertyName);
+        var lambda = Expression.Lambda(property, parameter);
+
+        var methodName = isDescending ? "OrderByDescending" : "OrderBy";
+        var resultExpression = Expression.Call(
+            typeof(Queryable),
+            methodName,
+            new Type[] { typeof(T), property.Type },
+            query.Expression,
+            Expression.Quote(lambda));
+
+        return query.Provider.CreateQuery<T>(resultExpression);
+    }
+
+    public static IQueryable<T> NotDeletedOnly<T>(this IQueryable<T> query)
+        where T : class, IHasIsDeleted
+    {
+        return query.Where(x => !x.IsDeleted);
+    }
+}

ConfigBackEnd/Extensions/ListExtensions.cs

@@ -0,0 +1,51 @@
+namespace Indotalent.ConfigBackEnd.Extensions;
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+public static class ListExtensions
+{
+    public static void AddIf<T>(this IList<T> list, bool condition, T item)
+    {
+        if (condition)
+        {
+            list.Add(item);
+        }
+    }
+
+    public static IEnumerable<IEnumerable<T>> Chunk<T>(this IEnumerable<T> source, int size)
+    {
+        while (source.Any())
+        {
+            yield return source.Take(size);
+            source = source.Skip(size);
+        }
+    }
+
+    public static void Shuffle<T>(this IList<T> list)
+    {
+        var rng = new Random();
+        int n = list.Count;
+        while (n > 1)
+        {
+            n--;
+            int k = rng.Next(n + 1);
+            T value = list[k];
+            list[k] = list[n];
+            list[n] = value;
+        }
+    }
+
+    public static IEnumerable<T> DistinctBy<T, TKey>(this IEnumerable<T> source, Func<T, TKey> keySelector)
+    {
+        var seenKeys = new HashSet<TKey>();
+        foreach (var element in source)
+        {
+            if (seenKeys.Add(keySelector(element)))
+            {
+                yield return element;
+            }
+        }
+    }
+}

ConfigBackEnd/Extensions/StringExtensions.cs

@@ -0,0 +1,92 @@
+namespace Indotalent.ConfigBackEnd.Extensions;
+
+using System.Text.RegularExpressions;
+
+public static class StringExtensions
+{
+    public static string ToShortNameVowel(this string? value, int length = 3)
+    {
+        if (string.IsNullOrWhiteSpace(value)) return "GEN";
+
+        var vowels = new string(value.Where(c => "AEIOUaeiou".Contains(c)).ToArray());
+        var baseName = vowels.Length >= length ? vowels : value;
+
+        return new string(baseName.Trim().Take(length).ToArray()).ToUpper();
+    }
+
+    public static string ToShortNameConsonant(this string? value, int length = 3)
+    {
+        if (string.IsNullOrWhiteSpace(value)) return "GEN";
+
+        var consonants = new string(value.Where(c => char.IsLetter(c) && !"AEIOUaeiou".Contains(c)).ToArray());
+        var baseName = consonants.Length >= length ? consonants : value;
+
+        return new string(baseName.Trim().Take(length).ToArray()).ToUpper();
+    }
+
+    public static string ToInitial(this string? value)
+    {
+        if (string.IsNullOrWhiteSpace(value)) return "XX";
+
+        var words = value.Trim().Split(' ', StringSplitOptions.RemoveEmptyEntries);
+
+        if (words.Length >= 2)
+        {
+            var firstInitial = words[0][0];
+            var secondInitial = words[1][0];
+            return $"{firstInitial}{secondInitial}".ToUpper();
+        }
+
+        return new string(value.Trim().Take(2).ToArray()).ToUpper();
+    }
+
+    public static bool IsNotNullOrWhiteSpace(this string? value)
+    {
+        return !string.IsNullOrWhiteSpace(value);
+    }
+
+    public static string ToTitleCase(this string? value)
+    {
+        if (string.IsNullOrWhiteSpace(value)) return string.Empty;
+
+        return System.Globalization.CultureInfo.CurrentCulture.TextInfo
+            .ToTitleCase(value.ToLower().Trim());
+    }
+
+    public static string ToSlug(this string? value)
+    {
+        if (string.IsNullOrWhiteSpace(value)) return string.Empty;
+
+        var str = value.ToLower().Trim();
+        str = Regex.Replace(str, @"[^a-z0-9\s-]", "");
+        str = Regex.Replace(str, @"[\s-]+", " ").Trim();
+        str = str.Replace(" ", "-");
+
+        return str;
+    }
+
+    public static string MaskEmail(this string? email)
+    {
+        if (string.IsNullOrWhiteSpace(email) || !email.Contains("@")) return "******";
+
+        var parts = email.Split('@');
+        var name = parts[0];
+        var domain = parts[1];
+
+        if (name.Length <= 2) return $"{name}***@{domain}";
+
+        return $"{name[..2]}***{name[^1..]}@{domain}";
+    }
+
+    public static string Truncate(this string? value, int maxLength)
+    {
+        if (string.IsNullOrWhiteSpace(value)) return string.Empty;
+        return value.Length <= maxLength ? value : $"{value[..maxLength]}...";
+    }
+
+    public static string RemoveNonNumeric(this string? value)
+    {
+        if (string.IsNullOrWhiteSpace(value)) return string.Empty;
+        return Regex.Replace(value, "[^0-9]", "");
+    }
+}

ConfigBackEnd/Interfaces/ICurrentUserService.cs

@@ -0,0 +1,12 @@
+namespace Indotalent.ConfigBackEnd.Interfaces;
+
+public interface ICurrentUserService
+{
+    string? TenantId { get; set; }
+    string? UserId { get; set; }
+    string? UserName { get; set; }
+    string? Email { get; set; }
+    string? FullName { get; set; }
+    Task<bool> IsInRoleAsync(string role);
+    Task<bool> HasPermissionAsync(string permission);
+}

ConfigBackEnd/Mappings/IMapFrom.cs

@@ -0,0 +1,8 @@
+namespace Indotalent.ConfigBackEnd.Mappings;
+
+using AutoMapper;
+
+public interface IMapFrom<T>
+{
+    void Mapping(Profile profile) => profile.CreateMap(typeof(T), GetType());
+}

ConfigBackEnd/Mappings/MappingProfile.cs

@@ -0,0 +1,30 @@
+namespace Indotalent.ConfigBackEnd.Mappings;
+
+using AutoMapper;
+using System.Reflection;
+
+public class MappingProfile : Profile
+{
+    public MappingProfile()
+    {
+        ApplyMappingsFromAssembly(Assembly.GetExecutingAssembly());
+    }
+
+    private void ApplyMappingsFromAssembly(Assembly assembly)
+    {
+        var types = assembly.GetExportedTypes()
+            .Where(t => t.GetInterfaces().Any(i =>
+                i.IsGenericType && i.GetGenericTypeDefinition() == typeof(IMapFrom<>)))
+            .ToList();
+
+        foreach (var type in types)
+        {
+            var instance = Activator.CreateInstance(type);
+
+            var methodInfo = type.GetMethod("Mapping")
+                ?? type.GetInterface("IMapFrom`1")?.GetMethod("Mapping");
+
+            methodInfo?.Invoke(instance, new object[] { this });
+        }
+    }
+}

ConfigBackEnd/Middleware/ExceptionHandlingMiddleware.cs

@@ -0,0 +1,105 @@
+using Indotalent.ConfigBackEnd.Exceptions;
+using Indotalent.Shared.Consts;
+using Indotalent.Shared.Models;
+using System.Net;
+using System.Text.Json;
+
+namespace Indotalent.ConfigBackEnd.Middleware;
+
+public class ExceptionHandlingMiddleware
+{
+    private readonly RequestDelegate _next;
+    private readonly ILogger<ExceptionHandlingMiddleware> _logger;
+
+    public ExceptionHandlingMiddleware(RequestDelegate next, ILogger<ExceptionHandlingMiddleware> logger)
+    {
+        _next = next;
+        _logger = logger;
+    }
+
+    public async Task Invoke(HttpContext context)
+    {
+        try
+        {
+            await _next(context);
+        }
+        catch (Exception ex)
+        {
+            await HandleExceptionAsync(context, ex);
+        }
+    }
+
+    private async Task HandleExceptionAsync(HttpContext context, Exception exception)
+    {
+        var code = HttpStatusCode.InternalServerError;
+        var message = "An unexpected error occurred on the server.";
+        var errors = new List<string>();
+
+        switch (exception)
+        {
+            case ValidationException validationException:
+                code = HttpStatusCode.BadRequest;
+                message = "One or more validation failures have occurred.";
+                foreach (var error in validationException.Errors)
+                {
+                    errors.AddRange(error.Value);
+                }
+                break;
+
+            case NotFoundException notFoundException:
+                code = HttpStatusCode.NotFound;
+                message = notFoundException.Message;
+                errors.Add(notFoundException.Message);
+                break;
+
+            case AlreadyExistsException alreadyExistsException:
+                code = HttpStatusCode.Conflict;
+                message = alreadyExistsException.Message;
+                errors.Add(alreadyExistsException.Message);
+                break;
+
+            case MismatchException mismatchException:
+                code = HttpStatusCode.BadRequest;
+                message = mismatchException.Message;
+                errors.Add(mismatchException.Message);
+                break;
+
+            case ForbiddenAccessException:
+                code = HttpStatusCode.Forbidden;
+                message = "You do not have permission to access this resource.";
+                errors.Add("Access denied to the requested resource.");
+                break;
+
+            case UnauthorizedAccessException:
+                code = HttpStatusCode.Unauthorized;
+                message = "Authentication is required to access this resource.";
+                errors.Add("Session invalid or expired.");
+                break;
+
+            default:
+                if (exception.StackTrace != null && exception.StackTrace.Contains(GlobalConsts.BehaviourError))
+                {
+                    _logger.LogError(exception, GlobalConsts.GlobalError + " {Message} on {Path}",
+                        exception.Message, context.Request.Path);
+                }
+                message = "An unexpected error occurred on the HRM server.";
+                errors.Add(exception.Message);
+                break;
+        }
+
+        context.Response.ContentType = "application/json";
+        context.Response.StatusCode = (int)code;
+
+        var response = new ApiResponse<object>
+        {
+            IsSuccess = false,
+            StatusCode = (int)code,
+            Message = message,
+            Errors = errors,
+            ServerTime = DateTime.UtcNow
+        };
+
+        var jsonOptions = new JsonSerializerOptions { PropertyNamingPolicy = JsonNamingPolicy.CamelCase };
+        await context.Response.WriteAsync(JsonSerializer.Serialize(response, jsonOptions));
+    }
+}