sync full source from private myoffice

MyOffice.DbContext/DatabaseBootstrapper.cs

@@ -0,0 +1,67 @@
+namespace MyOffice.DbContext;
+
+using Data.Models.Currencies;
+using Microsoft.EntityFrameworkCore;
+
+/// <summary>
+/// Migrate and seed using a DI-scoped <see cref="AppDbContext"/> (not the design-time factory).
+/// </summary>
+public static class DatabaseBootstrapper
+{
+	public static async Task InitializeAsync(AppDbContext db, CancellationToken cancellationToken = default)
+	{
+		await db.Database.MigrateAsync(cancellationToken);
+		await PrefillAsync(db, cancellationToken);
+		await DemoDataSeeder.SeedIfEmptyAsync(db, cancellationToken);
+		await UpdateCurrentRatesAsync(db, cancellationToken);
+	}
+
+	private static async Task PrefillAsync(AppDbContext dbContext, CancellationToken cancellationToken)
+	{
+		var predefinedCurrencyGlobals = new List<CurrencyGlobal>
+		{
+			new() { Id = CurrencyGlobalIdEnum.UAH.ToString(), DefaultQuantity = 1, Symbol = "₴", Name = "Ukrainian hryvnias" },
+			new() { Id = CurrencyGlobalIdEnum.USD.ToString(), DefaultQuantity = 1, Symbol = "$", Name = "US Dollar" },
+			new() { Id = CurrencyGlobalIdEnum.EUR.ToString(), DefaultQuantity = 1, Symbol = "€", Name = "Euros" },
+			new() { Id = CurrencyGlobalIdEnum.GBP.ToString(), DefaultQuantity = 1, Symbol = "£", Name = "British pounds sterling" },
+			new() { Id = CurrencyGlobalIdEnum.RUB.ToString(), DefaultQuantity = 10, Symbol = "₽", Name = "Russia Ruble" },
+			new() { Id = CurrencyGlobalIdEnum.BTC.ToString(), DefaultQuantity = 10, Symbol = "btc", Name = "Bitcoin" },
+			new() { Id = CurrencyGlobalIdEnum.ETH.ToString(), DefaultQuantity = 10, Symbol = "eth", Name = "Ethereum" },
+			new() { Id = CurrencyGlobalIdEnum.TON.ToString(), DefaultQuantity = 10, Symbol = "ton", Name = "TON" },
+			new() { Id = CurrencyGlobalIdEnum.OTHER.ToString(), DefaultQuantity = 1, Symbol = "", Name = "Other" },
+		};
+
+		var currencyGlobals = await dbContext.CurrencyGlobals.ToListAsync(cancellationToken);
+		foreach (var predefined in predefinedCurrencyGlobals)
+		{
+			if (currencyGlobals.All(x => x.Id != predefined.Id))
+			{
+				dbContext.CurrencyGlobals.Add(predefined);
+			}
+		}
+
+		await dbContext.SaveChangesAsync(cancellationToken);
+	}
+
+	private static async Task UpdateCurrentRatesAsync(AppDbContext dbContext, CancellationToken cancellationToken)
+	{
+		var lastRates = await dbContext.CurrencyRates
+			.Include(x => x.Currency)
+			.GroupBy(x => new { x.CurrencyId },
+				(key, g) => g.Where(x => x.DateTime <= DateTime.UtcNow).OrderByDescending(x => x.DateTime).First())
+			.ToListAsync(cancellationToken);
+
+		var currencies = await dbContext.Currencies.ToListAsync(cancellationToken);
+		foreach (var currency in currencies)
+		{
+			var rate = lastRates.FirstOrDefault(x => x.CurrencyId == currency.Id);
+			if (rate != null)
+			{
+				currency.CurrentRateId = rate.Id;
+				dbContext.Attach(currency).State = EntityState.Modified;
+			}
+		}
+
+		await dbContext.SaveChangesAsync(cancellationToken);
+	}
+}