initial commit

ConfigBackEnd/Extensions/AppDbContextExtensions.cs

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+using Indotalent.ConfigBackEnd.Interfaces;
+using Indotalent.Infrastructure.AutoNumberGenerator;
+using Indotalent.Infrastructure.Database;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+
+namespace Indotalent.ConfigBackEnd.Extensions;
+
+public static class AppDbContextExtensions
+{
+    public static async Task<string> GenerateAutoNumberAsync(
+    this AppDbContext context,
+    string entityName,
+    string prefixTemplate,
+    string? suffixTemplate = null,
+    int paddingLength = 4,
+    bool useYear = true,
+    bool useMonth = false,
+    CancellationToken ct = default)
+    {
+        var currentUserService = context.GetService<ICurrentUserService>();
+        var tenantId = currentUserService?.TenantId;
+
+        if (string.IsNullOrWhiteSpace(tenantId))
+        {
+            throw new InvalidOperationException("TenantId cannot be null or empty for multi-tenant auto-number sequence generation. Ensure the user session context is valid.");
+        }
+
+        var generator = context.GetService<AutoNumberGeneratorService>();
+
+        return await generator.GenerateNextNumberAsync(
+            tenantId,
+            entityName,
+            prefixTemplate,
+            suffixTemplate,
+            paddingLength,
+            useYear,
+            useMonth,
+            ct);
+    }
+}

ConfigBackEnd/Extensions/DateTimeExtensions.cs

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+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/GenericExtensions.cs

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+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

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+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

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+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

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+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]", "");
+    }
+}