///
/// Copyright (c) 2021-2023 Sensus Slovensko a.s.
///
using System;
using System.Windows.Forms;
using OrderManagement.Resources;

namespace OrderManagement
{
    public partial class SettingsDlg : Form
    {
        private LocalSettings ls;

        public SettingsDlg()
        {
            InitializeComponent();
        }

        public SettingsDlg(LocalSettings localSettings)
        {
            InitializeComponent();
            this.ls = localSettings;
        }

        void Localize()
        {
            Text = Strings.Settings;
            languageLabel.Text = Strings.Language_etc;
            loginRequiredCheckBox.Text = Strings.User_login_is_required;
            showPredefinedOrdersCheckBox.Text = Strings.Show_predefined_orders;
            saveButton.Text = Strings.Save;
            cancelButton.Text = Strings.Cancel;
            connStrForTracingGroupBox.Text = Strings.Connection_string_tracing_DB;
            connStrForUsersGroupBox.Text = Strings.Connection_string_users_DB;
        }

        private void SettingsDlg_Load(object sender, EventArgs e)
        {
            Localize();

            if (ls == null) return;

            languageComboBox.Items.Add("EN");
            languageComboBox.Items.Add("ZH_CN");
            languageComboBox.Items.Add("DE");
            languageComboBox.Items.Add("SK");
            languageComboBox.Text = ls.Language;

            loginRequiredCheckBox.Checked = ls.IsUserLoginRequired;
            showPredefinedOrdersCheckBox.Checked = ls.IsShowPredefinedOrders;
            showFinishedOrdersCheckBox.Checked = ls.IsShowFinishedOrders;

            tracingDBConnStringTextBox.Text = ls.TracingDBConnString;
            usersDBConnStringTextBox.Text = ls.UsersDBConnString;
        }

        /// <summary>
        /// Verifies UI content
        /// </summary>
        /// <returns>None-empty string (message) when invalid</returns>
        string IsUIContentValid()
        {
            if (!languageComboBox.Items.Contains(languageComboBox.Text))
            {
                return "Invalid language";
            }

            return null;
        }

        /// <summary>
        /// Updates settings, checks for differences compared to previous setrtings
        /// </summary>
        /// <returns>true when settings are different</returns>
        bool UpdateSettings()
        {
            if (ls == null) return false;

            bool isDifferent = false;

            if (ls.Language != languageComboBox.Text)
            {
                ls.Language = languageComboBox.Text;
                isDifferent = true;
            }

            if (ls.IsUserLoginRequired != loginRequiredCheckBox.Checked)
            {
                ls.IsUserLoginRequired = loginRequiredCheckBox.Checked;
                isDifferent = true;
            }

            if (ls.IsShowPredefinedOrders != showPredefinedOrdersCheckBox.Checked)
            {
                ls.IsShowPredefinedOrders = showPredefinedOrdersCheckBox.Checked;
                isDifferent = true;
            }

            if (ls.IsShowFinishedOrders != showFinishedOrdersCheckBox.Checked)
            {
                ls.IsShowFinishedOrders = showFinishedOrdersCheckBox.Checked;
                isDifferent = true;
            }

            if (ls.TracingDBConnString != tracingDBConnStringTextBox.Text)
            {
                ls.TracingDBConnString = tracingDBConnStringTextBox.Text;
                isDifferent = true;
            }

            if (ls.UsersDBConnString != usersDBConnStringTextBox.Text)
            {
                ls.UsersDBConnString = usersDBConnStringTextBox.Text;
                isDifferent = true;
            }

            return isDifferent;
        }

        private void saveButton_Click(object sender, EventArgs e)
        {
            string message = IsUIContentValid();
            if (string.IsNullOrEmpty(message))
            {
                UpdateSettings();
                DialogResult = DialogResult.OK;
                Close();
            }
            else
            {
                MessageBox.Show(message);
            }
        }

        private void cancelButton_Click(object sender, EventArgs e)
        {
            DialogResult = DialogResult.Cancel;
            Close();
        }
    }
}