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;
using Common;

namespace PersonalLaundry
{
    public partial class OperatorLoginsForm : Form
    {
        delegate void Function();

        OperatorLogin operatorLogin;
        public event System.EventHandler LoginSaved;

        public OperatorLoginsForm()
        {
            InitializeComponent();
        }

        public OperatorLoginsForm(int operatorLoginId)
        {
            using (var db = new DataModel())
            {
                operatorLogin = db.OperatorLogins.FirstOrDefault(t => t.OperatorLoginId == operatorLoginId);
            }
            InitializeComponent();
        }

        private void OperatorLogins_Load(object sender, EventArgs e)
        {
            this.ActiveControl = Password;
            PopulateRole();
            PopulateShift();

            this.ActiveControl = Username;

            if (operatorLogin == null) return;

            this.ActiveControl = Password;
            this.Username.Enabled = false; // set to readonly so that you are updating the user.
            Username.Text = operatorLogin.Username;
            Password.Text = operatorLogin.Password;
            Role.SelectedValue = operatorLogin.OperatorRoleId;
            Shift.SelectedItem = operatorLogin.OperatorShift;
        }

        private void PopulateRole()
        {
            using (var db = new DataModel())
            {
                Role.DataSource = db.OperatorRoles.Where(t => t.OperatorRoleId > 1).ToList();
            }
        }

        private void PopulateShift()
        {
            Shift.Items.Insert(0, "AM");
            Shift.Items.Insert(1, "PM");
        }

        private void CloseButton_Click(object sender, EventArgs e)
        {
            CloseForm();
        }

        private void CloseForm()
        {
            if (operatorLogin == null && string.IsNullOrEmpty(Password.Text) && string.IsNullOrEmpty(Password.Text)) return;
            if (Password.Text != operatorLogin.Password && MessageBox.Show("You have unsaved changes - would you like to exit without saving?", "Confirm exit", MessageBoxButtons.YesNo) == DialogResult.Yes) return;
        }

        private void SaveButton_Click(object sender, EventArgs e)
        {
            SaveOperatorLogin();
        }

        private void SaveOperatorLogin()
        {
            if (Password.Text.Length < 4 || Password.Text.Length < 4)
            {
                MessageBox.Show("Please make sure that the username or password is longer than 3 characters", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }

            if (string.IsNullOrEmpty(Shift.Text))
            {
                MessageBox.Show("Please select a shift", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }


            using (var db = new DataModel())
            {
                var update = db.UpdateOperatorLogin(Username.Text, Password.Text, int.Parse(Role.SelectedValue.ToString()), Shift.Text.ToString()).FirstOrDefault();
                if (update != null) operatorLogin = db.OperatorLogins.FirstOrDefault(f => f.OperatorLoginId == update.OperatorLoginId);
                if (this.LoginSaved != null) this.LoginSaved(this, new EventArgs());
                MessageBox.Show("Saved!", "Login", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
        }

        private void Password_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode != Keys.Enter) return;
            this.SaveOperatorLogin();
        }

        private void OperatorLoginsForm_FormClosing(object sender, FormClosingEventArgs e)
        {
            this.CloseForm();
        }

    }
}