using Microsoft.EntityFrameworkCore;
using xDataService.Configuration;

namespace xDataService.Db
{
    /// <summary>
    /// Provide an abstraction layout arround DBContext ...
    /// Only Used on EFCore ...
    /// </summary>
    public abstract class XDbContext : DbContext
    {
        private readonly XDataServiceConfiguration config;

        //
        #region Entities ...
        //
        // Register Default and Base Entities ...
        #endregion

        //
        // Constructor ...
        public XDbContext(
            DbContextOptions options,
            XDataServiceConfiguration config
        ) : base(options)
        {
            //
            try
            {
                Database.EnsureCreated();
                Database.Migrate();
            }
            catch { }

            this.config = config;
        }

        //
        // Prepare Fluent API ...
        protected override void OnModelCreating(ModelBuilder modelBuilder)
        {
            //
            OnXModelCreating(modelBuilder);

            //
            // Automatically apply all IEntityTypeConfiguration<T> in this assembly
            modelBuilder.ApplyConfigurationsFromAssembly(typeof(XDbContext).Assembly);

            //
            // Since this class inherit from Identity Db Context,
            // we have to pass this to Building Identity Models ...
            base.OnModelCreating(modelBuilder);
        }

        //
        public abstract void OnXModelCreating(ModelBuilder modelBuilder);

        //
        // Prepare Configuring ...
        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        {
            //
            if (config.EnableDetailedErrors)
            {
                optionsBuilder.EnableDetailedErrors();
            }

            //
            if (config.EnableSensitiveDataLogging)
            {
                optionsBuilder.EnableSensitiveDataLogging();
            }

            //
            if (config.EnableTracking)
            {
                optionsBuilder.UseQueryTrackingBehavior(QueryTrackingBehavior.TrackAll);
            }
            else
            {
                optionsBuilder.UseQueryTrackingBehavior(QueryTrackingBehavior.NoTracking);
            }

            //
            OnXConfiguring(optionsBuilder);

            //
            base.OnConfiguring(optionsBuilder);
        }

        //
        public abstract void OnXConfiguring(DbContextOptionsBuilder optionsBuilder);
    }
}