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);

            //
            // 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);
    }
}