104 lines
3.3 KiB
C#
104 lines
3.3 KiB
C#
using Indotalent.ConfigBackEnd.Extensions;
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using Indotalent.Data.Entities;
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using Indotalent.Data.Enums;
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using Microsoft.EntityFrameworkCore;
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namespace Indotalent.Infrastructure.Database.Demo;
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public static class BillSeeder
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{
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public static async Task GenerateDataAsync(AppDbContext context)
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{
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if (await context.Bill.AnyAsync()) return;
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var random = new Random();
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var entityName = nameof(Bill);
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var dateFinish = DateTime.Now;
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var dateStart = new DateTime(dateFinish.AddMonths(-12).Year, dateFinish.AddMonths(-12).Month, 1);
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var confirmedPurchaseOrders = await context.PurchaseOrder
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.Where(po => po.OrderStatus == PurchaseOrderStatus.Confirmed)
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.Select(po => po.Id)
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.ToListAsync();
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if (!confirmedPurchaseOrders.Any()) return;
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for (DateTime date = dateStart; date < dateFinish; date = date.AddMonths(1))
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{
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DateTime[] billDates = GetRandomDays(date.Year, date.Month, 5);
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foreach (var billDate in billDates)
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{
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if (confirmedPurchaseOrders.Count == 0) break;
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var status = GetRandomStatus(random);
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var purchaseOrderId = GetRandomAndRemove(confirmedPurchaseOrders, random);
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var autoNo = await context.GenerateAutoNumberAsync(
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entityName: entityName,
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prefixTemplate: $"{entityName.ToShortNameConsonant(3)}/{{Year}}/"
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);
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var bill = new Bill
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{
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AutoNumber = autoNo,
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BillDate = billDate,
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BillStatus = status,
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Description = $"Bill for {billDate:MMMM yyyy}",
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PurchaseOrderId = purchaseOrderId
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};
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await context.Bill.AddAsync(bill);
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}
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}
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await context.SaveChangesAsync();
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}
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private static BillStatus GetRandomStatus(Random random)
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{
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var statuses = new[]
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{
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BillStatus.Draft,
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BillStatus.Cancelled,
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BillStatus.Confirmed
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};
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var weights = new[] { 1, 1, 4 };
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int totalWeight = weights.Sum();
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int randomNumber = random.Next(0, totalWeight);
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for (int i = 0; i < statuses.Length; i++)
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{
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if (randomNumber < weights[i]) return statuses[i];
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randomNumber -= weights[i];
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}
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return BillStatus.Confirmed;
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}
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private static string GetRandomAndRemove(List<string> list, Random random)
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{
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int index = random.Next(list.Count);
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string value = list[index];
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list.RemoveAt(index);
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return value;
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}
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private static DateTime[] GetRandomDays(int year, int month, int count)
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{
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var random = new Random();
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int daysInMonthCount = DateTime.DaysInMonth(year, month);
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var daysInMonth = Enumerable.Range(1, daysInMonthCount).ToList();
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var selectedDays = new List<int>();
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for (int i = 0; i < count && daysInMonth.Count > 0; i++)
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{
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int day = daysInMonth[random.Next(daysInMonth.Count)];
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selectedDays.Add(day);
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daysInMonth.Remove(day);
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}
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return selectedDays.Select(day => new DateTime(year, month, day)).ToArray();
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}
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} |