using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Design;


namespace AuthHex
{
    public class AppDBContext : DbContext
    {
        public AppDBContext(DbContextOptions<AppDBContext> options) : base(options) { }
        public DbSet<Models.User> Users => Set<Models.User>();
        public DbSet<Models.Role> Roles => Set<Models.Role>();
        public DbSet<Models.UserType> UserType => Set<Models.UserType>();
        public DbSet<Models.UserSession> UserSessions => Set<Models.UserSession>();

        public DbSet<Models.Token> Token => Set<Models.Token>();

        public DbSet<Models.AuthEventLog> AuthEventLogs => Set<Models.AuthEventLog>();
        public DbSet<Models.UserMfa> UserMfas => Set<Models.UserMfa>();
        public DbSet<Models.UserProvider> UserProviders => Set<Models.UserProvider>();
        public DbSet<Models.Recovery> Recovery => Set<Models.Recovery>();
        public DbSet<Models.SysConfig> SysConfigs => Set<Models.SysConfig>();

        protected override void OnModelCreating(ModelBuilder modelBuilder)
        {
            base.OnModelCreating(modelBuilder);

            // Configure UserSession primary key
            modelBuilder.Entity<Models.UserSession>()
                .HasKey(us => us.SessionId);

            // Configure relationship between UserSession and User
            modelBuilder.Entity<Models.UserSession>()
                .HasOne(us => us.User)
                .WithMany(u => u.Sessions)
                .HasForeignKey(us => us.UserId)
                .OnDelete(DeleteBehavior.Cascade);

            // Configure AuthEventLog primary key
            modelBuilder.Entity<Models.AuthEventLog>()
                .HasKey(ae => ae.Id);

            // Configure Token primary key and relationships
            modelBuilder.Entity<Models.Token>()
                .HasKey(t => t.TokenId);

            modelBuilder.Entity<Models.Token>()
                .HasOne(t => t.User)
                .WithMany()
                .HasForeignKey(t => t.UserId)
                .OnDelete(DeleteBehavior.Cascade);

            // Configure UserMfa primary key and relationships
            modelBuilder.Entity<Models.UserMfa>()
                .HasKey(um => um.UserMfaId);

            modelBuilder.Entity<Models.UserMfa>()
                .HasOne(um => um.User)
                .WithOne(u => u.UserMfa)
                .HasForeignKey<Models.UserMfa>(um => um.UserId)
                .OnDelete(DeleteBehavior.Cascade);

            // Configure UserProvider primary key and relationships
            modelBuilder.Entity<Models.UserProvider>()
                .HasKey(up => up.ProviderId);

            modelBuilder.Entity<Models.UserProvider>()
                .HasOne(up => up.User)
                .WithMany(u => u.Providers)
                .HasForeignKey(up => up.UserId)
                .OnDelete(DeleteBehavior.Cascade);

            // Configure Role primary key
            modelBuilder.Entity<Models.Role>()
                .HasKey(r => r.RoleId);

            // Configure UserType primary key
            modelBuilder.Entity<Models.UserType>()
                .HasKey(ut => ut.UserTypeId);

            // Configure User primary key and relationships
            modelBuilder.Entity<Models.User>()
                .HasKey(u => u.Id);

            modelBuilder.Entity<Models.User>()
                .HasOne(u => u.Role)
                .WithMany()
                .HasForeignKey(u => u.RoleId)
                .OnDelete(DeleteBehavior.Restrict);

            modelBuilder.Entity<Models.User>()
                .HasOne(u => u.UserType)
                .WithMany()
                .HasForeignKey(u => u.UserTypeId)
                .OnDelete(DeleteBehavior.Restrict);
        }
    }

    public class ApplicationDbContextFactory : IDesignTimeDbContextFactory<AppDBContext>
    {
        public AppDBContext CreateDbContext(string[] args)
        {
            var config = new ConfigurationBuilder()
                .SetBasePath(Directory.GetCurrentDirectory())
                .AddJsonFile("appsettings.json", optional: false)
                .Build();

            var optionsBuilder = new DbContextOptionsBuilder<AppDBContext>();
            var connectionString = config.GetConnectionString("DefaultConnection");
            
            // Pomelo MySQL provider
            optionsBuilder.UseMySql(connectionString, new MySqlServerVersion(new Version(8, 0, 21)));

            return new AppDBContext(optionsBuilder.Options);
        }
    }
}