using ReactiveUI;
using SeedDb.Models;
using SeedDb.Services;
using System;
using System.IO;
using System.Reactive.Linq;

namespace SeedDb.ViewModels
{
    public class MainWindowViewModel : ViewModelBase
    {
        ViewModelBase _content;

        private static readonly string _setupPath = "setup.json";

        // private DatabaseEngine _db = new();
        private JsonEngine _js;
        private Helpers _hp;

        private SetupModel _setupConfig = new();

        public MainWindowViewModel(JsonEngine js, Helpers hp)
        {
            _js = js;

            if (!SetupConfig.Tos)
            {
                js.CreateSetupFile();
                TermsOfService();
            }
            else
            {
                // LoginScreen();
            }
        }

        /*public void LoginScreen()
        {
            var vm = new LoginViewModel();
        }*/

        public void TermsOfService()
        {
            var vm = new TermsOfServiceViewModel(_js, _hp);

            Observable.Merge(
                vm.Ok,
                vm.Cancel
                .Select(_ => (SetupModel)null))
                .Take(1)
                .Subscribe(model =>
                {
                    if (!model.Tos)
                    {
                        Environment.Exit(0);
                    }
                    else
                    {
                        SetupConfig.Tos = true;
                        CreateNewUser();
                    }
                });

            Content = vm;
        }

        public void CreateNewUser()
        {
            var vm = new CreateNewUserViewModel(_js);

            Content = vm;
        }

        public ViewModelBase Content
        {
            get => _content;
            set => this.RaiseAndSetIfChanged(ref _content, value);
        }

        public SetupModel SetupConfig
        {
            get => _setupConfig;
            set => this.RaiseAndSetIfChanged(ref _setupConfig, value);
        }
    }
}