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Infrastructure/Database/Demo/PaymentDisburseSeeder.cs

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+using Indotalent.ConfigBackEnd.Extensions;
+using Indotalent.Data.Entities;
+using Indotalent.Data.Enums;
+using Microsoft.EntityFrameworkCore;
+
+namespace Indotalent.Infrastructure.Database.Demo;
+
+public static class PaymentDisburseSeeder
+{
+    public static async Task GenerateDataAsync(AppDbContext context)
+    {
+        if (await context.PaymentDisburse.AnyAsync()) return;
+
+        var random = new Random();
+        var entityName = nameof(PaymentDisburse);
+        var dateFinish = DateTime.Now;
+        var dateStart = new DateTime(dateFinish.AddMonths(-12).Year, dateFinish.AddMonths(-12).Month, 1);
+
+        var confirmedBills = await context.Bill
+            .Include(b => b.PurchaseOrder)
+            .Where(b => b.BillStatus == BillStatus.Confirmed)
+            .ToListAsync();
+
+        var paymentMethods = await context.PaymentMethod
+            .Select(pm => pm.Id)
+            .ToListAsync();
+
+        if (!paymentMethods.Any()) return;
+
+        for (DateTime date = dateStart; date < dateFinish; date = date.AddMonths(1))
+        {
+            DateTime[] paymentDates = GetRandomDays(date.Year, date.Month, 4);
+
+            foreach (var paymentDate in paymentDates)
+            {
+                if (confirmedBills.Count == 0) break;
+
+                var status = GetRandomStatus(random);
+                var bill = GetRandomAndRemove(confirmedBills, random);
+                var paymentMethodId = GetRandomValue(paymentMethods, random);
+
+                var autoNo = await context.GenerateAutoNumberAsync(
+                    entityName: entityName,
+                    prefixTemplate: $"{entityName.ToShortNameConsonant(3)}/{{Year}}/"
+                );
+
+                var paymentDisburse = new PaymentDisburse
+                {
+                    AutoNumber = autoNo,
+                    Description = $"Payment Disbursed on {paymentDate:MMMM yyyy}",
+                    PaymentDate = paymentDate,
+                    PaymentMethodId = paymentMethodId,
+                    PaymentAmount = bill.PurchaseOrder?.AfterTaxAmount,
+                    Status = status,
+                    BillId = bill.Id
+                };
+
+                await context.PaymentDisburse.AddAsync(paymentDisburse);
+            }
+        }
+
+        await context.SaveChangesAsync();
+    }
+
+    private static PaymentDisburseStatus GetRandomStatus(Random random)
+    {
+        var statuses = new[]
+        {
+            PaymentDisburseStatus.Draft,
+            PaymentDisburseStatus.Cancelled,
+            PaymentDisburseStatus.Confirmed,
+            PaymentDisburseStatus.Archived
+        };
+        var weights = new[] { 1, 1, 4, 1 };
+
+        int totalWeight = weights.Sum();
+        int randomNumber = random.Next(0, totalWeight);
+
+        for (int i = 0; i < statuses.Length; i++)
+        {
+            if (randomNumber < weights[i]) return statuses[i];
+            randomNumber -= weights[i];
+        }
+
+        return PaymentDisburseStatus.Confirmed;
+    }
+
+    private static T GetRandomAndRemove<T>(List<T> list, Random random)
+    {
+        int index = random.Next(list.Count);
+        T value = list[index];
+        list.RemoveAt(index);
+        return value;
+    }
+
+    private static T GetRandomValue<T>(List<T> list, Random random)
+    {
+        return list[random.Next(list.Count)];
+    }
+
+    private static DateTime[] GetRandomDays(int year, int month, int count)
+    {
+        var random = new Random();
+        int daysInMonthCount = DateTime.DaysInMonth(year, month);
+        var daysInMonth = Enumerable.Range(1, daysInMonthCount).ToList();
+        var selectedDays = new List<int>();
+
+        for (int i = 0; i < count && daysInMonth.Count > 0; i++)
+        {
+            int day = daysInMonth[random.Next(daysInMonth.Count)];
+            selectedDays.Add(day);
+            daysInMonth.Remove(day);
+        }
+
+        return selectedDays.Select(day => new DateTime(year, month, day)).ToArray();
+    }
+}