using MiaoJiZhang.Infrastructure.Persistence;
using Microsoft.EntityFrameworkCore;

namespace MiaoJiZhang.Api.Services;

public class AccountDataEraser(AppDbContext db)
{
    public async Task EraseAsync(long userId, CancellationToken ct = default)
    {
        await using var transaction =
            await db.Database.BeginTransactionAsync(ct);
        await db.PushMessages
            .Where(message => message.TargetUserId == userId)
            .ExecuteDeleteAsync(ct);
        await db.PushDevices
            .Where(device => device.UserId == userId)
            .ExecuteDeleteAsync(ct);
        await db.UserPushPreferences
            .Where(preference => preference.UserId == userId)
            .ExecuteDeleteAsync(ct);
        await db.BudgetNotificationReceipts
            .Where(receipt => receipt.UserId == userId)
            .ExecuteDeleteAsync(ct);
        await db.ChatMessages
            .Where(message => message.UserId == userId)
            .ExecuteDeleteAsync(ct);
        await db.Transactions
            .IgnoreQueryFilters()
            .Where(item => item.UserId == userId)
            .ExecuteDeleteAsync(ct);
        await db.Budgets
            .Where(item => item.UserId == userId)
            .ExecuteDeleteAsync(ct);
        await db.Categories
            .Where(item => item.UserId == userId)
            .ExecuteDeleteAsync(ct);
        await db.AiCompanionSettings
            .Where(item => item.UserId == userId)
            .ExecuteDeleteAsync(ct);
        await db.Ledgers
            .Where(item => item.OwnerId == userId)
            .ExecuteDeleteAsync(ct);
        await db.Users
            .Where(item => item.Id == userId)
            .ExecuteDeleteAsync(ct);
        await transaction.CommitAsync(ct);
    }
}