using Microsoft.EntityFrameworkCore;
using UniversityDataBaseImplemet.Models;
using Stream = UniversityDataBaseImplemet.Models.Stream;

namespace UniversityDataBaseImplemet
{
    public class Database : DbContext
    {
        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        {
            if (optionsBuilder.IsConfigured == false)
            {
                optionsBuilder.UseNpgsql("Host=localhost;Port=5432;Database=UniversityCourseWork;Username=postgres;Password=0000");
            }
            base.OnConfiguring(optionsBuilder);
        }

		protected override void OnModelCreating(ModelBuilder modelBuilder)
        {
			modelBuilder.Entity<StudentDocument>()
				.HasKey(x => new { x.StudentId, x.DocumentId });
			modelBuilder.Entity<EducationGroupDocument>()
				.HasKey(x => new { x.EducationGroupId, x.DocumentId });
			modelBuilder.Entity<EducationGroupStream>()
				.HasKey(x => new { x.EducationGroupId, x.StreamId });
			modelBuilder.Entity<StudentStream>()
				.HasKey(x => new { x.StudentId, x.StreamId });                        

            modelBuilder.Entity<Document>()
				.HasOne(b => b.User)
				.WithMany(a => a.Documents)
				.OnDelete(DeleteBehavior.NoAction);
			modelBuilder.Entity<EducationStatus>()
				.HasOne(b => b.User)
				.WithMany(a => a.EducationStatuses)
				.OnDelete(DeleteBehavior.NoAction);
			modelBuilder.Entity<Student>()
				.HasOne(b => b.User)
				.WithMany(a => a.Students)
				.OnDelete(DeleteBehavior.NoAction);
            modelBuilder.Entity<Discipline>()
                .HasOne(b => b.User)
                .WithMany(a => a.Disciplines)
                .OnDelete(DeleteBehavior.NoAction);
            modelBuilder.Entity<EducationGroup>()
                .HasOne(b => b.User)
                .WithMany(a => a.EducationGroups)
                .OnDelete(DeleteBehavior.NoAction);
            modelBuilder.Entity<Stream>()
                .HasOne(b => b.User)
                .WithMany(a => a.Streams)
                .OnDelete(DeleteBehavior.NoAction);
        }


		public virtual DbSet<User> User { get; set; }
        public virtual DbSet<Document> Documents { get; set; }
        public virtual DbSet<Discipline> Discipline { get; set; }
        public virtual DbSet<EducationStatus> EducationStatuses { get; set; }
        public virtual DbSet<EducationGroup> EducationGroups { get; set; }
        public virtual DbSet<EducationGroupDocument> EducationGroupsDocuments { get; set; }
        public virtual DbSet<EducationGroupStream> EducationGroupsStreams { get; set; }
        public virtual DbSet<Stream> Streams { get; set; }
        public virtual DbSet<Student> Students { get; set; }
        public virtual DbSet<StudentDocument> StudentDocuments { get; set; }
        public virtual DbSet<StudentStream> StudentStreams { get; set; }        
    }
}