using System;
using System.Linq;
using BTCPayServer.Plugins.Test.Data;
using Microsoft.EntityFrameworkCore;

namespace BTCPayServer.Plugins.Test
{
    public class TestPluginDbContext : DbContext
    {
        private readonly bool _designTime;

        public DbSet<TestPluginData> TestPluginRecords { get; set; }
        
        public TestPluginDbContext(DbContextOptions<TestPluginDbContext> options, bool designTime = false)
            : base(options)
        {
            _designTime = designTime;
        }

        protected override void OnModelCreating(ModelBuilder modelBuilder)
        {
            base.OnModelCreating(modelBuilder);
            modelBuilder.HasDefaultSchema("BTCPayServer.Plugins.Test");
            if (Database.IsSqlite() && !_designTime)
            {
                // SQLite does not have proper support for DateTimeOffset via Entity Framework Core, see the limitations
                // here: https://docs.microsoft.com/en-us/ef/core/providers/sqlite/limitations#query-limitations
                // To work around this, when the Sqlite database provider is used, all model properties of type DateTimeOffset
                // use the DateTimeOffsetToBinaryConverter
                // Based on: https://github.com/aspnet/EntityFrameworkCore/issues/10784#issuecomment-415769754
                // This only supports millisecond precision, but should be sufficient for most use cases.
                foreach (var entityType in modelBuilder.Model.GetEntityTypes())
                {
                    var properties = entityType.ClrType.GetProperties().Where(p => p.PropertyType == typeof(DateTimeOffset));
                    foreach (var property in properties)
                    {
                        modelBuilder
                            .Entity(entityType.Name)
                            .Property(property.Name)
                            .HasConversion(new Microsoft.EntityFrameworkCore.Storage.ValueConversion.DateTimeOffsetToBinaryConverter());
                    }
                }
            }
        }
    }
}