using System;
using System.Windows.Forms;
using Microsoft.Web.WebView2.Core;
using Microsoft.Web.WebView2.WinForms;

namespace Project.Dialog
{
    public partial class fWebView : Form
    {
        private WebView2 webView2;
        private TextBox txtUrl;
        private Button btnGo;
        private Button btnBack;
        private Button btnForward;
        private Button btnRefresh;

        public fWebView()
        {
            InitializeComponent();
            InitializeWebView();
        }

        private void InitializeComponent()
        {
            this.SuspendLayout();

            // Form
            this.ClientSize = new System.Drawing.Size(1200, 800);
            this.Text = "WebView2 Browser";
            this.Name = "fWebView";

            // URL TextBox
            this.txtUrl = new TextBox();
            this.txtUrl.Location = new System.Drawing.Point(100, 10);
            this.txtUrl.Size = new System.Drawing.Size(900, 25);
            this.txtUrl.KeyDown += TxtUrl_KeyDown;

            // Go Button
            this.btnGo = new Button();
            this.btnGo.Location = new System.Drawing.Point(1010, 10);
            this.btnGo.Size = new System.Drawing.Size(70, 25);
            this.btnGo.Text = "Go";
            this.btnGo.Click += BtnGo_Click;

            // Back Button
            this.btnBack = new Button();
            this.btnBack.Location = new System.Drawing.Point(10, 10);
            this.btnBack.Size = new System.Drawing.Size(25, 25);
            this.btnBack.Text = "◀";
            this.btnBack.Click += BtnBack_Click;

            // Forward Button
            this.btnForward = new Button();
            this.btnForward.Location = new System.Drawing.Point(40, 10);
            this.btnForward.Size = new System.Drawing.Size(25, 25);
            this.btnForward.Text = "▶";
            this.btnForward.Click += BtnForward_Click;

            // Refresh Button
            this.btnRefresh = new Button();
            this.btnRefresh.Location = new System.Drawing.Point(70, 10);
            this.btnRefresh.Size = new System.Drawing.Size(25, 25);
            this.btnRefresh.Text = "⟳";
            this.btnRefresh.Click += BtnRefresh_Click;

            // WebView2
            this.webView2 = new WebView2();
            this.webView2.Location = new System.Drawing.Point(10, 45);
            this.webView2.Size = new System.Drawing.Size(1170, 740);

            this.Controls.Add(this.txtUrl);
            this.Controls.Add(this.btnGo);
            this.Controls.Add(this.btnBack);
            this.Controls.Add(this.btnForward);
            this.Controls.Add(this.btnRefresh);
            this.Controls.Add(this.webView2);

            this.ResumeLayout(false);
        }

        private async void InitializeWebView()
        {
            try
            {
                await webView2.EnsureCoreWebView2Async(null);

                // 네비게이션 이벤트 핸들러
                webView2.CoreWebView2.NavigationCompleted += CoreWebView2_NavigationCompleted;
                webView2.CoreWebView2.SourceChanged += CoreWebView2_SourceChanged;

                // 기본 페이지 로드
                webView2.CoreWebView2.Navigate("http://localhost:3000");
                txtUrl.Text = "http://localhost:3000";
            }
            catch (Exception ex)
            {
                MessageBox.Show($"WebView2 초기화 실패: {ex.Message}", "Error",
                    MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        private void CoreWebView2_SourceChanged(object sender, CoreWebView2SourceChangedEventArgs e)
        {
            txtUrl.Text = webView2.Source.ToString();
        }

        private void CoreWebView2_NavigationCompleted(object sender, CoreWebView2NavigationCompletedEventArgs e)
        {
            btnBack.Enabled = webView2.CanGoBack;
            btnForward.Enabled = webView2.CanGoForward;
        }

        private void BtnGo_Click(object sender, EventArgs e)
        {
            NavigateToUrl();
        }

        private void TxtUrl_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Enter)
            {
                NavigateToUrl();
                e.Handled = true;
                e.SuppressKeyPress = true;
            }
        }

        private void NavigateToUrl()
        {
            string url = txtUrl.Text;
            if (!url.StartsWith("http://") && !url.StartsWith("https://"))
            {
                url = "http://" + url;
            }

            try
            {
                webView2.CoreWebView2.Navigate(url);
            }
            catch (Exception ex)
            {
                MessageBox.Show($"페이지 로드 실패: {ex.Message}", "Error",
                    MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        private void BtnBack_Click(object sender, EventArgs e)
        {
            if (webView2.CanGoBack)
            {
                webView2.GoBack();
            }
        }

        private void BtnForward_Click(object sender, EventArgs e)
        {
            if (webView2.CanGoForward)
            {
                webView2.GoForward();
            }
        }

        private void BtnRefresh_Click(object sender, EventArgs e)
        {
            webView2.Reload();
        }

        // JavaScript 실행 예제 메서드
        public async void ExecuteScriptAsync(string script)
        {
            try
            {
                string result = await webView2.CoreWebView2.ExecuteScriptAsync(script);
                MessageBox.Show($"실행 결과: {result}");
            }
            catch (Exception ex)
            {
                MessageBox.Show($"스크립트 실행 실패: {ex.Message}", "Error",
                    MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        // C#에서 JavaScript로 메시지 전송
        public void PostMessageToWeb(string message)
        {
            try
            {
                webView2.CoreWebView2.PostWebMessageAsString(message);
            }
            catch (Exception ex)
            {
                MessageBox.Show($"메시지 전송 실패: {ex.Message}", "Error",
                    MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        // JavaScript에서 C#으로 메시지 수신
        private void SetupWebMessageReceived()
        {
            webView2.CoreWebView2.WebMessageReceived += (sender, e) =>
            {
                string message = e.TryGetWebMessageAsString();
                MessageBox.Show($"웹에서 받은 메시지: {message}");
            };
        }
    }
}