using PersonalFinance;
using PersonalFinance.Entity;
using PersonalFinance.Utils;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;

namespace PersonalFinanceWindow.ViewModel
{
    class OverviewViewModel : ViewModelBase
    {
        PaymentService paymentsrv;
        ScheduledItemService schsrv;
        UserService usrsrv;

        int myScheduledPaymentsCount;
        public int MyScheduledPaymentsCount { get { return myScheduledPaymentsCount; } set { Set(ref myScheduledPaymentsCount, value); } }

        double myPayments;
        public double MyPayments { get { return myPayments; } set { Set(ref myPayments, value); } }

        double familyPayments;
        public double FamilyPayments { get { return familyPayments; } set { Set(ref familyPayments, value); } }

        int myPaymentsCount;
        public int MyPaymentsCount { get { return myPaymentsCount; } set { Set(ref myPaymentsCount, value); } }

        int familyPaymentsCount;
        public int FamilyPaymentsCount { get { return familyPaymentsCount; } set { Set(ref familyPaymentsCount, value); } }

        int usersCount;
        public int UsersCount { get { return usersCount; } set { Set(ref usersCount, value); } }


        public OverviewViewModel()
        {
            paymentsrv = new PaymentService(ctx);
            schsrv = new ScheduledItemService(ctx);
            usrsrv = new UserService(ctx);

            if ((bool)(DesignerProperties.IsInDesignModeProperty.GetMetadata(typeof(DependencyObject)).DefaultValue))
            {
                //dummy data
                MyPayments = 12500;
                FamilyPayments = 39750;
                MyPaymentsCount = 4;
                FamilyPaymentsCount = 9;
                UsersCount = 5;
                MyScheduledPaymentsCount = 3;
            }
        }

        public void LoadOverview()
        {
            double czk = paymentsrv.GetAllPayments()
                    .FindAll(i => i.User.UserId == UserViewModel.loggedUserId && i.Currency == PaymentCurrency.CZK)
                    .Sum(i => i.Price);
            double usd = paymentsrv.GetAllPayments()
                .FindAll(i => i.User.UserId == UserViewModel.loggedUserId && i.Currency == PaymentCurrency.USD)
                .Sum(i => i.Price);
            double eur = paymentsrv.GetAllPayments()
                .FindAll(i => i.User.UserId == UserViewModel.loggedUserId && i.Currency == PaymentCurrency.EUR)
                .Sum(i => i.Price);
            MyPayments = czk + Exchange.fromEurToCzk(eur) + Exchange.fromEurToCzk(usd);

            double fam_czk = paymentsrv.GetAllPayments()
                    .FindAll(i => i.Group != PaymentGroup.Private && i.Currency == PaymentCurrency.CZK)
                    .Sum(i => i.Price);
            double fam_usd = paymentsrv.GetAllPayments()
                    .FindAll(i => i.Group != PaymentGroup.Private && i.Currency == PaymentCurrency.USD)
                    .Sum(i => i.Price);
            double fam_eur = paymentsrv.GetAllPayments()
                    .FindAll(i => i.Group != PaymentGroup.Private && i.Currency == PaymentCurrency.EUR)
                    .Sum(i => i.Price);
            FamilyPayments = fam_czk + Exchange.fromEurToCzk(fam_eur) + Exchange.fromEurToCzk(fam_usd);

            MyPaymentsCount = paymentsrv.GetAllPayments().FindAll(i => i.User.UserId == UserViewModel.loggedUserId).Count;
            FamilyPaymentsCount = paymentsrv.GetAllPayments().FindAll(i => i.Group != PaymentGroup.Private).Count;
            MyScheduledPaymentsCount = schsrv.GetAllScheduledItems().FindAll(i => i.User.UserId == UserViewModel.loggedUserId).Count;
            UsersCount = usrsrv.GetAllUsers().Count;
        }
    }
}