using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace testApp
{
    public partial class CustomerOverviewForm : Form
    {
        List<Customer> customers = new List<Customer>();

        public CustomerOverviewForm()
        {
            InitializeComponent();
            CreateCustomersAndAccounts();

        }

        private void CreateCustomersAndAccounts()
        {

            customers.Add(new Customer
            {
                Name = "Marika Klasson",
                Id = "910227",
                Accounts = new List<Account> {
                new Account {
                typeOfAccount = CheckingAccount.typeString,
                balance = 89 },
                new Account {
                typeOfAccount = PayAccount.typeString,
                balance = 14},
                new Account {
                typeOfAccount = SavingsAccount.typeString,
                balance = 55 } }
            });

            customers.Add(new Customer
            {
                Name = "Hilda Andersson",
                Id = "880803",
                Accounts = new List<Account> {
                new Account {
                typeOfAccount = CheckingAccount.typeString,
                balance = 13 },
                new Account {
                typeOfAccount = PayAccount.typeString,
                balance = 0 },
                new Account {
                typeOfAccount = SavingsAccount.typeString,
                balance = 0 } }
            });

            customers.Add(new Customer
           {
               Name = "Maja Nilsson",
               Id = "621203",
               Accounts = new List<Account> {
                new Account {
                typeOfAccount = CheckingAccount.typeString,
                balance = 55 },
                new Account {
                typeOfAccount = PayAccount.typeString,
                balance = 0 },
                new Account {
                typeOfAccount = SavingsAccount.typeString,
                balance = 0 } }
           });
            customers.Add(new Customer
            {
                Name = "Johanna Jansson",
                Id = "950820",
                Accounts = new List<Account> {
                new Account {
                balance = 798,
                typeOfAccount = CheckingAccount.typeString },
                new Account {
                typeOfAccount = PayAccount.typeString,
                balance = 95 },
                new Account {
                typeOfAccount = SavingsAccount.typeString,
                balance = 0} }

            });

            customers.Add(new Customer
            {
                Name = "Majbritt Hansson",
                Id = "430525",
                Accounts = new List<Account>{
                new Account {
                typeOfAccount = CheckingAccount.typeString,
                balance = 11},
                new Account {
                typeOfAccount = PayAccount.typeString,
                balance = 0},
                new Account {
                typeOfAccount = SavingsAccount.typeString,
                balance = 133} }
            });

            listCustomerOverview.DataSource = customers;

            comboBox2.DataSource = customers;
        }


        private void listCustomerOverview_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (listCustomerOverview.SelectedItem != null)
            {
                dataGridView1.DataSource = (listCustomerOverview.SelectedItem as Customer).Accounts;
            }

        }


        private void btnDeposit_Click(object sender, EventArgs e)
        {
            try
            {
                var value = decimal.Parse(txtAmount.Text);
                var account = (listCustomerOverview.SelectedItem as Customer).Accounts[viewCustomersGrid.CurrentCell.RowIndex];
                account.Deposit(value);
                viewCustomersGrid.DataSource = null;
                viewCustomersGrid.DataSource = (listCustomerOverview.SelectedItem as Customer).Accounts;
                lblTransactionStatus.Text = "Transaction was successfull. You have inserted\n" + txtAmount.Text + " to choosen account";
            }
            catch (Exception)
            {
                lblTransactionStatus.Text = txtAmount.Text + ", is an invalid input. ";
            }

        }

        private void btnWithdraw_Click(object sender, EventArgs e)
        {
            try
            {
                var value = decimal.Parse(txtAmount.Text);
                var account = (listCustomerOverview.SelectedItem as Customer).Accounts[viewCustomersGrid.CurrentCell.RowIndex];
                account.WithDraw(value);
                viewCustomersGrid.DataSource = null;
                viewCustomersGrid.DataSource = (listCustomerOverview.SelectedItem as Customer).Accounts;
                lblTransactionStatus.Text = "Transaction was successfull. You have withdrawed: \n" + txtAmount.Text + " from the choosen account";
            }
            catch
            {
                lblTransactionStatus.Text = txtAmount.Text + " is either an invalid input or\nyou don't have enough money.";
            }
        }


        private void btnAddCustomer_Click(object sender, EventArgs e)
        {

            while (txtAddName.Text == String.Empty || txtAddId.Text.Length < 5)
            {
                lblNotAdded.Text = "Fill out both textboxes.\nId must be atleast 5 characters";
                return;
            }

            if (customers.Any(customer => customer.Id == txtAddId.Text))
            {
                lblNotAdded.Text = "This id: " + txtAddId.Text + " does already exist.";
            }

            else
            {
                customers.Add(new Customer
                {
                    Name = txtAddName.Text,
                    Id = txtAddId.Text,
                    Accounts = new List<Account>{
                            new Account {
                            typeOfAccount = CheckingAccount.typeString,
                            balance = 0},
                            new Account {
                            typeOfAccount = PayAccount.typeString,
                            balance = 0},
                            new Account {
                            typeOfAccount = SavingsAccount.typeString,
                            balance = 0}
                    }
                });

                listCustomerOverview.DataSource = null;
                listCustomerOverview.DataSource = customers;
                comboBox2.DataSource = null;
                comboBox2.DataSource = customers;
                txtAddId.Clear();
                txtAddName.Clear();
                btnRemove.Enabled = true;
                lblNotAdded.Text = "Success";
                listCustomerOverview.SelectedIndex = customers.Count - 1;
            }
        }

        private void btnRemove_Click(object sender, EventArgs e)
        {
            customers.RemoveAt(listCustomerOverview.SelectedIndex);
            listCustomerOverview.SelectedIndex = 0;
            listCustomerOverview.DataSource = null;
            listCustomerOverview.DataSource = customers;
            comboBox2.DataSource = null;
            comboBox2.DataSource = customers;
            lblNotAdded.Text = "";

            if (listCustomerOverview.Items.Count == 0)
            {
                btnRemove.Enabled = false;
                viewCustomersGrid.DataSource = null;
            }
            else
                btnRemove.Enabled = true;

        }

        private void searchButton_Click(object sender, EventArgs e)
        {

            if (searchTextbox.Text != String.Empty)
            {
                listboxSearchResult.Items.Clear();

                var searchCustomer = customers
                    .Where(customer => customer.Id == searchTextbox.Text || customer.Name.ToLower().Contains(searchTextbox.Text.ToLower()))
                    .Select(customer => customer.Name).ToList();

                searchError.Text = "";

                if (searchCustomer.Count == 0)
                {
                    searchError.Text = "No results, try again";
                }

                else
                {
                    foreach (var customerName in searchCustomer)
                    {
                        listboxSearchResult.Items.Add(customerName);
                    }
                }
            }

            else
            {
                searchError.Text = "inputfield cannot be empty.";
            }

            searchTextbox.Focus();

        }

        private void listboxSearchResult_SelectedIndexChanged(object sender, EventArgs e)
        {
            var selectedCustomer = customers
            .Where(customer => customer.Name == (string)listboxSearchResult.SelectedItem)
            .Select(customer => customer.Accounts);

            viewCustomersGrid.DataSource = selectedCustomer;

        }

        private void comboBox2_SelectedIndexChanged(object sender, EventArgs e)
        {
            viewCustomersGrid.DataSource = (comboBox2.SelectedItem as Customer).Accounts;
        }
    }
}