using System.Reflection;
using System.Web;
using Authinator.Backend.Database.Tables;
using Authinator.Backend.Utils;
using Microsoft.EntityFrameworkCore;

namespace Authinator.Backend.Database;

public class DatabaseContext : DbContext {
	public DatabaseContext() { }

	public DatabaseContext(DbContextOptions<DatabaseContext> options) : base(options) { }

	public virtual DbSet<Network> Networks { get; set; } = null!;
	public virtual DbSet<Config>  Config   { get; set; } = null!;
	public virtual DbSet<Group>   Groups   { get; set; } = null!;
	public virtual DbSet<User>    Users    { get; set; } = null!;
	public virtual DbSet<ACL>     ACLs     { get; set; } = null!;

	protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder) => optionsBuilder.UseSqlite("Data Source=database.db");

	protected override void OnModelCreating(ModelBuilder modelBuilder) {
		modelBuilder.ApplyConfigurationsFromAssembly(Assembly.GetExecutingAssembly());
	}

	public async void Initialize() {
		Config.Set("cookie_name", "authinator-session", false);
		Config.Set("admin_group", "admin", false);
		Config.Set("hmac_secret", CryptoUtils.GetRandomBytesBase64(64), false);
		Config.Set("auth_token_lifetime", "31556926", false); // default auth token lifetime is 1 year
		Config.Set("pw_reset_token_lifetime", "3600", false); // default pw reset token lifetime is 1 hour

		await SaveChangesAsync();

		Config.UpdateCache();

		if (!Groups.Any(p => p.Name == ConfigCache.AdminGroup)) {
			Groups.Add(new Group { Name = ConfigCache.AdminGroup });
			await SaveChangesAsync();
		}

		if (!Users.Include(p => p.Groups).Any(p => p.Groups.Any(q => q.Name == ConfigCache.AdminGroup))) {
			Console.WriteLine($"* No admin user found, creating one...");
			var user = new User { Reference = "admin_" + DateTimeOffset.UtcNow.ToUnixTimeSeconds(), Groups = new List<Group> { Groups.First(p => p.Name == ConfigCache.AdminGroup) } };
			await Users.AddAsync(user);
			await SaveChangesAsync();
			Console.WriteLine($"* User '{user.Reference}' created, activate it on /FinishRegistration using this token: {user.GetSignupToken()}");
		}
		else if (!Users.Include(p => p.Groups).AsEnumerable().Any(p => p.Groups.Any(q => q.Name == ConfigCache.AdminGroup) && p.IsSignupComplete)) {
			var user = Users.Include(p => p.Groups).First(p => p.Groups.Any(q => q.Name == ConfigCache.AdminGroup));
			Console.WriteLine($"* Admin user not activated yet, activate it on /FinishRegistration using this token: {user.GetSignupToken()}");
		}
		else {
			Globals.NoActiveAdminUser = false;
		}
	}
}