using static qdr.app.tools.claudecodebalancewidget.MainForm;

namespace qdr.app.tools.claudecodebalancewidget
{
    public partial class EnhancedSettingsForm : Form
    {
        private TabControl tabControl;
        private TabPage sessionTabPage;
        private TabPage apiTabPage;
        private TabPage helpTabPage;
        
        // Session Cookie Tab Controls
        private TextBox sessionTokenTextBox;
        private Button sessionShowHideButton;
        private Button sessionTestButton;
        private Label sessionStatusLabel;
        private Label sessionInstructionsLabel;
        private bool isSessionTokenVisible = false;
        
        // API Key Tab Controls
        private TextBox apiKeyTextBox;
        private Button apiShowHideButton;
        private Button apiTestButton;
        private Label apiStatusLabel;
        private Label apiInstructionsLabel;
        private bool isApiKeyVisible = false;
        
        // Common Controls
        private RadioButton sessionRadioButton;
        private RadioButton apiRadioButton;
        private Button okButton;
        private Button cancelButton;
        
        public string SessionToken { get; private set; }
        public string ApiKey { get; private set; }
        public AuthenticationMethod AuthMethod { get; private set; }

        public EnhancedSettingsForm(string currentSessionToken, string currentApiKey, AuthenticationMethod currentAuthMethod)
        {
            SessionToken = currentSessionToken;
            ApiKey = currentApiKey;
            AuthMethod = currentAuthMethod;
            InitializeComponent();
            
            sessionTokenTextBox.Text = currentSessionToken;
            apiKeyTextBox.Text = currentApiKey;
            
            if (currentAuthMethod == AuthenticationMethod.ApiKey)
            {
                apiRadioButton.Checked = true;
                tabControl.SelectedTab = apiTabPage;
            }
            else
            {
                sessionRadioButton.Checked = true;
                tabControl.SelectedTab = sessionTabPage;
            }
        }

        //private void InitializeComponent()
        //{
        //    this.SuspendLayout();
            
        //    // Form
        //    this.ClientSize = new Size(600, 500);
        //    this.Text = "Settings - Claude Balance Monitor";
        //    this.StartPosition = FormStartPosition.CenterParent;
        //    this.FormBorderStyle = FormBorderStyle.FixedDialog;
        //    this.MaximizeBox = false;
        //    this.MinimizeBox = false;
            
        //    // Authentication Method Selection
        //    var authMethodLabel = new Label();
        //    authMethodLabel.Text = "Authentication Method:";
        //    authMethodLabel.Location = new Point(10, 10);
        //    authMethodLabel.Size = new Size(150, 20);
        //    authMethodLabel.Font = new Font("Segoe UI", 9, FontStyle.Bold);
        //    this.Controls.Add(authMethodLabel);
            
        //    sessionRadioButton = new RadioButton();
        //    sessionRadioButton.Text = "Session Cookie (Legacy)";
        //    sessionRadioButton.Location = new Point(10, 35);
        //    sessionRadioButton.Size = new Size(200, 20);
        //    sessionRadioButton.Checked = true;
        //    sessionRadioButton.CheckedChanged += AuthMethod_CheckedChanged;
        //    this.Controls.Add(sessionRadioButton);
            
        //    apiRadioButton = new RadioButton();
        //    apiRadioButton.Text = "API Key (Recommended)";
        //    apiRadioButton.Location = new Point(220, 35);
        //    apiRadioButton.Size = new Size(200, 20);
        //    apiRadioButton.CheckedChanged += AuthMethod_CheckedChanged;
        //    this.Controls.Add(apiRadioButton);
            
        //    // Tab Control
        //    tabControl = new TabControl();
        //    tabControl.Location = new Point(10, 65);
        //    tabControl.Size = new Size(570, 350);
        //    this.Controls.Add(tabControl);
            
        //    // Session Cookie Tab
        //    sessionTabPage = new TabPage("Session Cookie");
        //    CreateSessionTab();
        //    tabControl.TabPages.Add(sessionTabPage);
            
        //    // API Key Tab
        //    apiTabPage = new TabPage("API Key");
        //    CreateApiTab();
        //    tabControl.TabPages.Add(apiTabPage);
            
        //    // Help Tab
        //    helpTabPage = new TabPage("Help");
        //    CreateHelpTab();
        //    tabControl.TabPages.Add(helpTabPage);
            
        //    // OK Button
        //    okButton = new Button();
        //    okButton.Text = "OK";
        //    okButton.Location = new Point(405, 430);
        //    okButton.Size = new Size(90, 30);
        //    okButton.Click += OkButton_Click;
        //    this.Controls.Add(okButton);
            
        //    // Cancel Button
        //    cancelButton = new Button();
        //    cancelButton.Text = "Cancel";
        //    cancelButton.Location = new Point(505, 430);
        //    cancelButton.Size = new Size(90, 30);
        //    cancelButton.Click += CancelButton_Click;
        //    this.Controls.Add(cancelButton);
            
        //    this.ResumeLayout(false);
        //}

        private void CreateSessionTab()
        {
            // Instructions
            sessionInstructionsLabel = new Label();
            sessionInstructionsLabel.Text = 
                "⚠️ WARNING: Session cookie method may no longer work due to enhanced security.\n\n" +
                "To get your session token (if still working):\n" +
                "1. Go to https://console.anthropic.com/settings/billing\n" +
                "2. Open Developer Tools (F12)\n" +
                "3. Go to Application → Cookies\n" +
                "4. Find and copy the 'sessionKey' cookie value\n\n" +
                "Note: This method is deprecated. Use API Key instead.";
            sessionInstructionsLabel.Location = new Point(10, 10);
            sessionInstructionsLabel.Size = new Size(540, 120);
            sessionInstructionsLabel.Font = new Font("Segoe UI", 9);
            sessionInstructionsLabel.ForeColor = Color.DarkOrange;
            sessionTabPage.Controls.Add(sessionInstructionsLabel);
            
            // Session Token Label
            var sessionTokenLabel = new Label();
            sessionTokenLabel.Text = "Session Token:";
            sessionTokenLabel.Location = new Point(10, 140);
            sessionTokenLabel.Size = new Size(100, 20);
            sessionTokenLabel.Font = new Font("Segoe UI", 9, FontStyle.Bold);
            sessionTabPage.Controls.Add(sessionTokenLabel);
            
            // Session Token TextBox
            sessionTokenTextBox = new TextBox();
            sessionTokenTextBox.Location = new Point(10, 165);
            sessionTokenTextBox.Size = new Size(420, 23);
            sessionTokenTextBox.UseSystemPasswordChar = true;
            sessionTokenTextBox.Font = new Font("Consolas", 9);
            sessionTabPage.Controls.Add(sessionTokenTextBox);
            
            // Session Show/Hide Button
            sessionShowHideButton = new Button();
            sessionShowHideButton.Text = "Show";
            sessionShowHideButton.Location = new Point(440, 165);
            sessionShowHideButton.Size = new Size(60, 23);
            sessionShowHideButton.Click += SessionShowHideButton_Click;
            sessionTabPage.Controls.Add(sessionShowHideButton);
            
            // Session Test Button
            sessionTestButton = new Button();
            sessionTestButton.Text = "Test Connection";
            sessionTestButton.Location = new Point(10, 200);
            sessionTestButton.Size = new Size(120, 30);
            sessionTestButton.Click += SessionTestButton_Click;
            sessionTabPage.Controls.Add(sessionTestButton);
            
            // Session Status Label
            sessionStatusLabel = new Label();
            sessionStatusLabel.Name = "sessionStatusLabel";
            sessionStatusLabel.Text = "Enter your session token and click 'Test Connection'";
            sessionStatusLabel.Location = new Point(140, 205);
            sessionStatusLabel.Size = new Size(360, 20);
            sessionStatusLabel.ForeColor = Color.Gray;
            sessionTabPage.Controls.Add(sessionStatusLabel);
        }

        private void CreateApiTab()
        {
            // Instructions
            apiInstructionsLabel = new Label();
            apiInstructionsLabel.Text = 
                "✅ RECOMMENDED: Use API Key for reliable access.\n\n" +
                "To get your API key:\n" +
                "1. Go to https://console.anthropic.com/\n" +
                "2. Sign up or log in to your account\n" +
                "3. Go to Settings → API Keys\n" +
                "4. Click 'Create Key' and copy the generated key\n" +
                "5. Make sure you have billing set up and credits available\n\n" +
                "Note: API keys provide more reliable access than session cookies.";
            apiInstructionsLabel.Location = new Point(10, 10);
            apiInstructionsLabel.Size = new Size(540, 120);
            apiInstructionsLabel.Font = new Font("Segoe UI", 9);
            apiInstructionsLabel.ForeColor = Color.DarkGreen;
            apiTabPage.Controls.Add(apiInstructionsLabel);
            
            // API Key Label
            var apiKeyLabel = new Label();
            apiKeyLabel.Text = "API Key:";
            apiKeyLabel.Location = new Point(10, 140);
            apiKeyLabel.Size = new Size(100, 20);
            apiKeyLabel.Font = new Font("Segoe UI", 9, FontStyle.Bold);
            apiTabPage.Controls.Add(apiKeyLabel);
            
            // API Key TextBox
            apiKeyTextBox = new TextBox();
            apiKeyTextBox.Location = new Point(10, 165);
            apiKeyTextBox.Size = new Size(420, 23);
            apiKeyTextBox.UseSystemPasswordChar = true;
            apiKeyTextBox.Font = new Font("Consolas", 9);
            apiTabPage.Controls.Add(apiKeyTextBox);
            
            // API Show/Hide Button
            apiShowHideButton = new Button();
            apiShowHideButton.Text = "Show";
            apiShowHideButton.Location = new Point(440, 165);
            apiShowHideButton.Size = new Size(60, 23);
            apiShowHideButton.Click += ApiShowHideButton_Click;
            apiTabPage.Controls.Add(apiShowHideButton);
            
            // API Test Button
            apiTestButton = new Button();
            apiTestButton.Text = "Test API Key";
            apiTestButton.Location = new Point(10, 200);
            apiTestButton.Size = new Size(120, 30);
            apiTestButton.Click += ApiTestButton_Click;
            apiTabPage.Controls.Add(apiTestButton);
            
            // API Status Label
            apiStatusLabel = new Label();
            apiStatusLabel.Name = "apiStatusLabel";
            apiStatusLabel.Text = "Enter your API key and click 'Test API Key'";
            apiStatusLabel.Location = new Point(140, 205);
            apiStatusLabel.Size = new Size(360, 20);
            apiStatusLabel.ForeColor = Color.Gray;
            apiTabPage.Controls.Add(apiStatusLabel);
            
            // Additional API Information
            var apiInfoLabel = new Label();
            apiInfoLabel.Text = 
                "💡 Tips:\n" +
                "• API keys start with 'sk-ant-api03-'\n" +
                "• Keep your API key secure and don't share it\n" +
                "• You can monitor usage in the Anthropic Console\n" +
                "• API access requires a paid plan with credits";
            apiInfoLabel.Location = new Point(10, 240);
            apiInfoLabel.Size = new Size(540, 80);
            apiInfoLabel.Font = new Font("Segoe UI", 8.5f);
            apiInfoLabel.ForeColor = Color.DarkBlue;
            apiTabPage.Controls.Add(apiInfoLabel);
        }

        private void CreateHelpTab()
        {
            var helpText = new RichTextBox();
            helpText.Text = 
                "CLAUDE BALANCE MONITOR HELP\n\n" +
                "AUTHENTICATION METHODS:\n\n" +
                "1. API Key (Recommended)\n" +
                "   ✅ Most reliable method\n" +
                "   ✅ Official Anthropic authentication\n" +
                "   ✅ Works with current security measures\n" +
                "   ❌ Requires paid Anthropic Console account\n\n" +
                "2. Session Cookie (Legacy)\n" +
                "   ❌ May not work due to enhanced security\n" +
                "   ❌ Prone to expiration\n" +
                "   ❌ May trigger Forbidden errors\n" +
                "   ✅ No additional setup if it works\n\n" +
                "TROUBLESHOOTING:\n\n" +
                "Forbidden Error:\n" +
                "• Anthropic has enhanced security measures\n" +
                "• Session cookies may no longer work\n" +
                "• Switch to API Key authentication\n" +
                "• Ensure you have a valid Anthropic Console account\n\n" +
                "API Key Issues:\n" +
                "• Verify the key starts with 'sk-ant-api03-'\n" +
                "• Check that billing is set up in Console\n" +
                "• Ensure you have available credits\n" +
                "• Make sure the key has proper permissions\n\n" +
                "No Balance Found:\n" +
                "• Check your Anthropic Console billing page manually\n" +
                "• Verify your account has API access\n" +
                "• Try refreshing the widget manually\n\n" +
                "GETTING HELP:\n" +
                "• Check Anthropic's official documentation\n" +
                "• Visit https://support.anthropic.com/\n" +
                "• Ensure your account is properly set up\n\n" +
                "Note: This tool is unofficial and may break if Anthropic changes their systems.";
            
            helpText.Location = new Point(10, 10);
            helpText.Size = new Size(540, 300);
            helpText.Font = new Font("Segoe UI", 9);
            helpText.ReadOnly = true;
            helpText.BackColor = SystemColors.Control;
            helpTabPage.Controls.Add(helpText);
        }

        private void AuthMethod_CheckedChanged(object sender, EventArgs e)
        {
            if (sessionRadioButton.Checked)
            {
                tabControl.SelectedTab = sessionTabPage;
            }
            else if (apiRadioButton.Checked)
            {
                tabControl.SelectedTab = apiTabPage;
            }
        }

        private void SessionShowHideButton_Click(object sender, EventArgs e)
        {
            isSessionTokenVisible = !isSessionTokenVisible;
            sessionTokenTextBox.UseSystemPasswordChar = !isSessionTokenVisible;
            sessionShowHideButton.Text = isSessionTokenVisible ? "Hide" : "Show";
        }

        private void ApiShowHideButton_Click(object sender, EventArgs e)
        {
            isApiKeyVisible = !isApiKeyVisible;
            apiKeyTextBox.UseSystemPasswordChar = !isApiKeyVisible;
            apiShowHideButton.Text = isApiKeyVisible ? "Hide" : "Show";
        }

        private async void SessionTestButton_Click(object sender, EventArgs e)
        {
            var testToken = sessionTokenTextBox.Text.Trim();
            
            if (string.IsNullOrEmpty(testToken))
            {
                sessionStatusLabel.Text = "Please enter a session token";
                sessionStatusLabel.ForeColor = Color.Red;
                return;
            }
            
            sessionStatusLabel.Text = "Testing connection...";
            sessionStatusLabel.ForeColor = Color.Blue;
            sessionTestButton.Enabled = false;
            
            try
            {
                using (var testClient = new HttpClient())
                {
                    testClient.Timeout = TimeSpan.FromSeconds(10);
                    testClient.DefaultRequestHeaders.Add("User-Agent", 
                        "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36");
                    testClient.DefaultRequestHeaders.Add("Cookie", $"sessionKey={testToken}");
                    testClient.DefaultRequestHeaders.Add("X-Requested-With", "XMLHttpRequest");
                    testClient.DefaultRequestHeaders.Add("Referer", "https://console.anthropic.com/");
                    
                    var response = await testClient.GetAsync("https://console.anthropic.com/settings/billing");
                    
                    if (response.IsSuccessStatusCode)
                    {
                        sessionStatusLabel.Text = "✓ Connection successful!";
                        sessionStatusLabel.ForeColor = Color.Green;
                    }
                    else if (response.StatusCode == System.Net.HttpStatusCode.Forbidden)
                    {
                        sessionStatusLabel.Text = "✗ Forbidden - Session cookies may no longer work. Try API Key.";
                        sessionStatusLabel.ForeColor = Color.Red;
                    }
                    else
                    {
                        sessionStatusLabel.Text = $"✗ Connection failed (Status: {response.StatusCode})";
                        sessionStatusLabel.ForeColor = Color.Red;
                    }
                }
            }
            catch (Exception ex)
            {
                sessionStatusLabel.Text = $"✗ Connection error: {ex.Message}";
                sessionStatusLabel.ForeColor = Color.Red;
            }
            finally
            {
                sessionTestButton.Enabled = true;
            }
        }

        private async void ApiTestButton_Click(object sender, EventArgs e)
        {
            var testApiKey = apiKeyTextBox.Text.Trim();
            
            if (string.IsNullOrEmpty(testApiKey))
            {
                apiStatusLabel.Text = "Please enter an API key";
                apiStatusLabel.ForeColor = Color.Red;
                return;
            }
            
            if (!testApiKey.StartsWith("sk-ant-api03-"))
            {
                apiStatusLabel.Text = "API key should start with 'sk-ant-api03-'";
                apiStatusLabel.ForeColor = Color.Orange;
                return;
            }
            
            apiStatusLabel.Text = "Testing API key...";
            apiStatusLabel.ForeColor = Color.Blue;
            apiTestButton.Enabled = false;
            
            try
            {
                using (var testClient = new HttpClient())
                {
                    testClient.Timeout = TimeSpan.FromSeconds(10);
                    
                    // Test with a simple API call
                    var request = new HttpRequestMessage(HttpMethod.Post, "https://api.anthropic.com/v1/messages");
                    request.Headers.Add("x-api-key", testApiKey);
                    request.Headers.Add("anthropic-version", "2023-06-01");
                    
                    // Simple test message
                    var testContent = @"{
                        ""model"": ""claude-3-5-haiku-20241022"",
                        ""max_tokens"": 10,
                        ""messages"": [{
                            ""role"": ""user"",
                            ""content"": ""Hello""
                        }]
                    }";
                    
                    request.Content = new StringContent(testContent, System.Text.Encoding.UTF8, "application/json");
                    
                    var response = await testClient.SendAsync(request);
                    
                    if (response.IsSuccessStatusCode)
                    {
                        apiStatusLabel.Text = "✓ API key is valid and working!";
                        apiStatusLabel.ForeColor = Color.Green;
                    }
                    else if (response.StatusCode == System.Net.HttpStatusCode.Unauthorized)
                    {
                        apiStatusLabel.Text = "✗ Invalid API key";
                        apiStatusLabel.ForeColor = Color.Red;
                    }
                    else if (response.StatusCode == System.Net.HttpStatusCode.PaymentRequired)
                    {
                        apiStatusLabel.Text = "✗ No credits available. Add funds to your account.";
                        apiStatusLabel.ForeColor = Color.Orange;
                    }
                    else
                    {
                        apiStatusLabel.Text = $"✗ API error (Status: {response.StatusCode})";
                        apiStatusLabel.ForeColor = Color.Red;
                    }
                }
            }
            catch (Exception ex)
            {
                apiStatusLabel.Text = $"✗ Connection error: {ex.Message}";
                apiStatusLabel.ForeColor = Color.Red;
            }
            finally
            {
                apiTestButton.Enabled = true;
            }
        }

        private void OkButton_Click(object sender, EventArgs e)
        {
            SessionToken = sessionTokenTextBox.Text.Trim();
            ApiKey = apiKeyTextBox.Text.Trim();
            
            if (apiRadioButton.Checked)
            {
                AuthMethod = AuthenticationMethod.ApiKey;
                if (string.IsNullOrEmpty(ApiKey))
                {
                    MessageBox.Show("Please enter an API key or switch to session cookie method.", 
                        "Missing API Key", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                    return;
                }
            }
            else
            {
                AuthMethod = AuthenticationMethod.SessionCookie;
                if (string.IsNullOrEmpty(SessionToken))
                {
                    MessageBox.Show("Please enter a session token or switch to API key method.", 
                        "Missing Session Token", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                    return;
                }
            }
            
            DialogResult = DialogResult.OK;
            Close();
        }

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