initial commit

Infrastructure/Database/Demo/ExpenseSeeder.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 ExpenseSeeder
+{
+    public static async Task GenerateDataAsync(AppDbContext context)
+    {
+        if (await context.Expense.AnyAsync()) return;
+
+        var random = new Random();
+        var entityName = nameof(Expense);
+        var dateFinish = DateTime.Now;
+        var dateStart = new DateTime(dateFinish.AddMonths(-11).Year, dateFinish.AddMonths(-11).Month, 1);
+
+        var targetCampaigns = await context.Campaign
+            .Where(c => c.Status == CampaignStatus.Confirmed ||
+                        c.Status == CampaignStatus.OnProgress ||
+                        c.Status == CampaignStatus.Finished)
+            .Select(c => c.Id)
+            .ToListAsync();
+
+        if (!targetCampaigns.Any()) return;
+
+        for (DateTime date = dateStart; date <= dateFinish; date = date.AddMonths(1))
+        {
+            DateTime[] expenseDates = GetRandomDays(date.Year, date.Month, 5);
+
+            foreach (var expenseDate in expenseDates)
+            {
+                var status = GetRandomStatus(random);
+
+                var autoNo = await context.GenerateAutoNumberAsync(
+                    entityName: entityName,
+                    prefixTemplate: $"{entityName.ToShortNameConsonant(3)}/{{Year}}/"
+                );
+
+                var expense = new Expense
+                {
+                    AutoNumber = autoNo,
+                    Title = $"Expense for {expenseDate:MMMM yyyy}",
+                    Description = $"Description for expense on {expenseDate:MMMM yyyy}",
+                    ExpenseDate = expenseDate,
+                    Status = status,
+                    Amount = (decimal)(1000 * Math.Ceiling((random.NextDouble() * 89) + 1)),
+                    CampaignId = GetRandomValue(targetCampaigns, random)
+                };
+
+                await context.Expense.AddAsync(expense);
+            }
+        }
+
+        await context.SaveChangesAsync();
+    }
+
+    private static ExpenseStatus GetRandomStatus(Random random)
+    {
+        var statuses = new[] { ExpenseStatus.Draft, ExpenseStatus.Cancelled, ExpenseStatus.Confirmed, ExpenseStatus.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 ExpenseStatus.Confirmed;
+    }
+
+    private static string GetRandomValue(List<string> 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();
+    }
+}