#region License

// Copyright 2005-2019 Paul Kohler (https://github.com/paulkohler/minisqlquery). All rights reserved.
// This source code is made available under the terms of the GNU Lesser General Public License v3.0
// https://github.com/paulkohler/minisqlquery/blob/master/LICENSE
#endregion

using System;
using System.Media;
using System.Windows.Forms;
using MiniSqlQuery.Core;
using MiniSqlQuery.PlugIns.SearchTools.Commands;

namespace MiniSqlQuery.PlugIns.SearchTools
{
    /// <summary>The find replace form.</summary>
    public partial class FindReplaceForm : Form, IFindReplaceWindow
    {
        /// <summary>The _services.</summary>
        private readonly IApplicationServices _services;

        /// <summary>Initializes a new instance of the <see cref="FindReplaceForm"/> class.</summary>
        /// <param name="services">The services.</param>
        public FindReplaceForm(IApplicationServices services)
        {
            InitializeComponent();
            StartPosition = FormStartPosition.CenterParent;
            _services = services;
        }

        /// <summary>Gets or sets FindString.</summary>
        public string FindString
        {
            get { return txtFindString.Text; }
            set { txtFindString.Text = value; }
        }

        /// <summary>Gets or sets ReplaceString.</summary>
        public string ReplaceString
        {
            get { return txtReplaceText.Text; }
            set { txtReplaceText.Text = value; }
        }

        /// <summary>The create find request.</summary>
        /// <param name="provider">The provider.</param>
        /// <param name="findString">The find string.</param>
        /// <param name="replaceValue">The replace value.</param>
        private void CreateFindRequest(IFindReplaceProvider provider, string findString, string replaceValue)
        {
            int key = provider.GetHashCode();
            FindTextRequest request;

            if (SearchToolsCommon.FindReplaceTextRequests.ContainsKey(key))
            {
                request = SearchToolsCommon.FindReplaceTextRequests[key];
                if (request.SearchValue != findString)
                {
                    // reset find text and set the starting position to the current cursor location
                    request.SearchValue = findString;
                    request.ReplaceValue = replaceValue;
                    request.Position = provider.CursorOffset;
                }
            }
            else
            {
                request = new FindTextRequest(provider, findString);
                request.ReplaceValue = replaceValue;
            }

            SearchToolsCommon.FindReplaceTextRequests[key] = request;
        }

        /// <summary>The dim form.</summary>
        private void DimForm()
        {
            Opacity = 0.8;
        }

        /// <summary>The find replace form_ activated.</summary>
        /// <param name="sender">The sender.</param>
        /// <param name="e">The e.</param>
        private void FindReplaceForm_Activated(object sender, EventArgs e)
        {
            if (txtFindString.Focused | txtReplaceText.Focused)
            {
                UnDimForm();
            }
            else
            {
                DimForm();
            }
        }

        /// <summary>The find replace form_ deactivate.</summary>
        /// <param name="sender">The sender.</param>
        /// <param name="e">The e.</param>
        private void FindReplaceForm_Deactivate(object sender, EventArgs e)
        {
            DimForm();
        }

        /// <summary>The find replace form_ form closing.</summary>
        /// <param name="sender">The sender.</param>
        /// <param name="e">The e.</param>
        private void FindReplaceForm_FormClosing(object sender, FormClosingEventArgs e)
        {
            if (e.CloseReason == CloseReason.UserClosing)
            {
                e.Cancel = true;
                Hide();
            }
        }

        /// <summary>The find replace form_ key up.</summary>
        /// <param name="sender">The sender.</param>
        /// <param name="e">The e.</param>
        private void FindReplaceForm_KeyUp(object sender, KeyEventArgs e)
        {
            // simulate close
            if (e.KeyCode == Keys.Escape)
            {
                e.Handled = true;
                Hide();
            }
        }


        /// <summary>The handle find next.</summary>
        /// <param name="provider">The provider.</param>
        /// <param name="findString">The find string.</param>
        /// <param name="replaceValue">The replace value.</param>
        private void HandleFindNext(IFindReplaceProvider provider, string findString, string replaceValue)
        {
            CreateFindRequest(provider, findString, replaceValue);
            CommandManager.GetCommandInstance<FindNextStringCommand>().Execute();
        }

        /// <summary>The handle replace next.</summary>
        /// <param name="provider">The provider.</param>
        /// <param name="findString">The find string.</param>
        /// <param name="replaceValue">The replace value.</param>
        private void HandleReplaceNext(IFindReplaceProvider provider, string findString, string replaceValue)
        {
            CommandManager.GetCommandInstance<ReplaceStringCommand>().Execute();
        }

        /// <summary>The un dim form.</summary>
        private void UnDimForm()
        {
            Opacity = 1.0;
        }

        /// <summary>The btn cancel_ click.</summary>
        /// <param name="sender">The sender.</param>
        /// <param name="e">The e.</param>
        private void btnCancel_Click(object sender, EventArgs e)
        {
            Hide();
        }

        /// <summary>The btn find next_ click.</summary>
        /// <param name="sender">The sender.</param>
        /// <param name="e">The e.</param>
        private void btnFindNext_Click(object sender, EventArgs e)
        {
            IFindReplaceProvider provider = _services.HostWindow.ActiveChildForm as IFindReplaceProvider;

            if (provider == null)
            {
                SystemSounds.Beep.Play();
            }
            else
            {
                HandleFindNext(provider, FindString, ReplaceString);
            }
        }

        /// <summary>The btn replace_ click.</summary>
        /// <param name="sender">The sender.</param>
        /// <param name="e">The e.</param>
        private void btnReplace_Click(object sender, EventArgs e)
        {
            IFindReplaceProvider provider = _services.HostWindow.ActiveChildForm as IFindReplaceProvider;

            if (provider == null)
            {
                SystemSounds.Beep.Play();
            }
            else
            {
                HandleReplaceNext(provider, FindString, ReplaceString);
            }
        }

        /// <summary>The txt find string_ enter.</summary>
        /// <param name="sender">The sender.</param>
        /// <param name="e">The e.</param>
        private void txtFindString_Enter(object sender, EventArgs e)
        {
            UnDimForm();
        }

        /// <summary>The txt find string_ leave.</summary>
        /// <param name="sender">The sender.</param>
        /// <param name="e">The e.</param>
        private void txtFindString_Leave(object sender, EventArgs e)
        {
            DimForm();
        }
    }
}