initial commit

Infrastructure/Database/Demo/InvoiceSeeder.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 InvoiceSeeder
+{
+    public static async Task GenerateDataAsync(AppDbContext context)
+    {
+        if (await context.Invoice.AnyAsync()) return;
+
+        var random = new Random();
+        var entityName = nameof(Invoice);
+        var dateFinish = DateTime.Now;
+        var dateStart = new DateTime(dateFinish.AddMonths(-12).Year, dateFinish.AddMonths(-12).Month, 1);
+
+        var confirmedSalesOrders = await context.SalesOrder
+            .Where(so => so.OrderStatus == SalesOrderStatus.Confirmed)
+            .Select(so => so.Id)
+            .ToListAsync();
+
+        if (!confirmedSalesOrders.Any()) return;
+
+        for (DateTime date = dateStart; date < dateFinish; date = date.AddMonths(1))
+        {
+            DateTime[] invoiceDates = GetRandomDays(date.Year, date.Month, 5);
+
+            foreach (var invoiceDate in invoiceDates)
+            {
+                if (confirmedSalesOrders.Count == 0) break;
+
+                var status = GetRandomStatus(random);
+                var salesOrderId = GetRandomAndRemove(confirmedSalesOrders, random);
+
+                var autoNo = await context.GenerateAutoNumberAsync(
+                    entityName: entityName,
+                    prefixTemplate: $"{entityName.ToShortNameConsonant(3)}/{{Year}}/"
+                );
+
+                var invoice = new Invoice
+                {
+                    AutoNumber = autoNo,
+                    InvoiceDate = invoiceDate,
+                    InvoiceStatus = status,
+                    Description = $"Invoice for {invoiceDate:MMMM yyyy}",
+                    SalesOrderId = salesOrderId
+                };
+
+                await context.Invoice.AddAsync(invoice);
+            }
+        }
+
+        await context.SaveChangesAsync();
+    }
+
+    private static InvoiceStatus GetRandomStatus(Random random)
+    {
+        var statuses = new[] { InvoiceStatus.Draft, InvoiceStatus.Cancelled, InvoiceStatus.Confirmed };
+        var weights = new[] { 1, 1, 4 };
+
+        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 InvoiceStatus.Confirmed;
+    }
+
+    private static string GetRandomAndRemove(List<string> list, Random random)
+    {
+        int index = random.Next(list.Count);
+        string value = list[index];
+        list.RemoveAt(index);
+        return value;
+    }
+
+    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();
+    }
+}