namespace PainoBar_Helper
{
    public partial class Main : Form
    {
        private readonly ProfileManager _profileManager;
        private readonly PianobarManager _pianobarManager;
        private OutputManager? _outputManager;
        private System.Windows.Forms.Timer? _statusTimer;
        private bool _statusToggle = false;

        // Connection status enum
        private enum ConnectionStatus
        {
            Disconnected,  // Red
            ConnectedIdle, // Green
            ConnectedActive // Blue
        }

        private ConnectionStatus _currentStatus = ConnectionStatus.Disconnected;

        public Main()
        {
            InitializeComponent();

            _profileManager = new ProfileManager();
            _pianobarManager = new PianobarManager();

            InitializeMenus();
            InitializeStatusBar();
            InitializeEvents();
            UpdateProfilesMenu();
            UpdateConnectionStatus(ConnectionStatus.Disconnected);

            // Set initial status
            if (statusLabelRight != null)
            {
                var activeProfile = _profileManager.GetActiveProfile();
                if (activeProfile != null)
                {
                    statusLabelRight.Text = $"Ready - Profile: {activeProfile.Name}";
                }
                else if (_profileManager.Profiles.Any())
                {
                    // If no active profile but profiles exist, set the first one as active
                    _profileManager.SetActiveProfile(_profileManager.Profiles.First().Name);
                    statusLabelRight.Text = $"Ready - Profile: {_profileManager.ActiveProfileName}";
                }
                else
                {
                    statusLabelRight.Text = "Ready - No profile configured";
                }
            }
        }

        #region Initialization

        private void InitializeMenus()
        {
            // File menu is assumed to be created in the Designer
            // This method sets up dynamic profile menu items
        }

        private void InitializeStatusBar()
        {
            // Status bar zones are assumed to be created in the Designer:
            // - statusLabelLeft: Connection indicator
            // - statusLabelCenter: Alternating status (Profile/Station)
            // - statusLabelRight: Event feed

            _statusTimer = new System.Windows.Forms.Timer();
            _statusTimer.Interval = 10000; // 10 seconds
            _statusTimer.Tick += StatusTimer_Tick;
            _statusTimer.Start();

            UpdateCenterStatus();
        }

        private void InitializeEvents()
        {
            // Pianobar events
            _pianobarManager.Connected += PianobarManager_Connected;
            _pianobarManager.Disconnected += PianobarManager_Disconnected;
            _pianobarManager.SongChanged += PianobarManager_SongChanged;
            _pianobarManager.StationChanged += PianobarManager_StationChanged;
            _pianobarManager.EventOccurred += PianobarManager_EventOccurred;

            // Profile events
            _profileManager.ProfilesChanged += ProfileManager_ProfilesChanged;
            _profileManager.ActiveProfileChanged += ProfileManager_ActiveProfileChanged;
        }

        #endregion

        #region Button Event Handlers

        // This method should be wired to btnConnect.Click in the Designer
        public void btnConnect_Click(object? sender, EventArgs e)
        {
            if (_pianobarManager.IsConnected)
            {
                MessageBox.Show("Already connected to Pianobar.", "Already Connected",
                    MessageBoxButtons.OK, MessageBoxIcon.Information);
                return;
            }

            // Get pianobar.exe path from active profile or use default
            var activeProfile = _profileManager.GetActiveProfile();

            if (activeProfile == null)
            {
                var result = MessageBox.Show(
                    "No profile selected. Would you like to create one now?\n\n" +
                    "Click Yes to open Settings, or No to cancel.", 
                    "No Profile", 
                    MessageBoxButtons.YesNo, 
                    MessageBoxIcon.Question);

                if (result == DialogResult.Yes)
                {
                    menuSettings_Click(sender, e);
                }
                return;
            }

            string pianobarPath = activeProfile.Settings.PianobarPath;
            string? configPath = _profileManager.GetActiveConfigPath();
            string? eventFilePath = _profileManager.GetEventOutputPath();

            // Debug information
            string debugInfo = $"Profile: {activeProfile.Name}\n" +
                              $"Pianobar Path: {pianobarPath}\n" +
                              $"Config Path: {configPath ?? "(none)"}\n" +
                              $"Event File: {eventFilePath ?? "(none)"}\n" +
                              $"File Exists: {File.Exists(pianobarPath)}";

            try
            {
                // Update status to show we're attempting connection
                if (statusLabelRight != null)
                    statusLabelRight.Text = $"Starting Pianobar...";

                _pianobarManager.Connect(pianobarPath, configPath, eventFilePath);

                // Success message will be shown by the Connected event handler
            }
            catch (Exception ex)
            {
                // Update status to show connection failed
                if (statusLabelRight != null)
                    statusLabelRight.Text = "Failed to start Pianobar";

                MessageBox.Show(
                    $"Failed to start Pianobar:\n\n{ex.Message}\n\n" +
                    $"Debug Information:\n{debugInfo}", 
                    "Connection Error",
                    MessageBoxButtons.OK, 
                    MessageBoxIcon.Error);
            }
        }

        // This method should be wired to btnDisconnect.Click in the Designer
        public void btnDisconnect_Click(object? sender, EventArgs e)
        {
            if (!_pianobarManager.IsConnected)
            {
                MessageBox.Show("Not connected to Pianobar.", "Not Connected",
                    MessageBoxButtons.OK, MessageBoxIcon.Information);
                return;
            }

            if (statusLabelRight != null)
                statusLabelRight.Text = "Disconnecting...";

            // Check if we should kill the process or just detach
            var activeProfile = _profileManager.GetActiveProfile();
            bool killProcess = activeProfile?.Settings.KillProcessOnDisconnect ?? false;

            if (killProcess)
            {
                _pianobarManager.DisconnectAndKill();
            }
            else
            {
                _pianobarManager.Disconnect();
            }

            _outputManager?.Stop();
        }

        // This method should be wired to btnPlayPause.Click in the Designer
        public void btnPlayPause_Click(object? sender, EventArgs e)
        {
            if (!_pianobarManager.IsConnected)
            {
                MessageBox.Show("Not connected to Pianobar.", "Not Connected",
                    MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return;
            }

            try
            {
                _pianobarManager.PlayPause();
                UpdatePlayPauseButton();
            }
            catch (Exception ex)
            {
                MessageBox.Show($"Failed to toggle play/pause:\n{ex.Message}", "Command Error",
                    MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        // This method should be wired to btnSkip.Click in the Designer
        public void btnSkip_Click(object? sender, EventArgs e)
        {
            if (!_pianobarManager.IsConnected)
            {
                MessageBox.Show("Not connected to Pianobar.", "Not Connected",
                    MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return;
            }

            try
            {
                _pianobarManager.Skip();
            }
            catch (Exception ex)
            {
                MessageBox.Show($"Failed to skip track:\n{ex.Message}", "Command Error",
                    MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        // This method should be wired to btnStations.Click in the Designer (or menu item)
        public void btnStations_Click(object? sender, EventArgs e)
        {
            if (!_pianobarManager.IsConnected)
            {
                MessageBox.Show("Not connected to Pianobar.", "Not Connected",
                    MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return;
            }

            var stationForm = new StationForm(_pianobarManager);
            stationForm.ShowDialog(this);
        }

        #endregion

        #region Menu Event Handlers

        // This method should be wired to the Settings menu item click
        public void menuSettings_Click(object? sender, EventArgs e)
        {
            var activeProfile = _profileManager.GetActiveProfile();
            var settingsForm = new SettingsForm(_profileManager, activeProfile?.Settings ?? new ProfileSettings());
            if (settingsForm.ShowDialog(this) == DialogResult.OK)
            {
                // Settings were saved, update the UI
                UpdateProfilesMenu();

                // Update status to show the new active profile
                var newActiveProfile = _profileManager.GetActiveProfile();
                if (newActiveProfile != null && statusLabelRight != null)
                {
                    statusLabelRight.Text = $"Profile saved: {newActiveProfile.Name}";
                }

                // Restart output manager if connected
                if (_pianobarManager.IsConnected)
                {
                    RestartOutputManager();
                }
            }
        }

        private void ProfileManager_ProfilesChanged(object? sender, EventArgs e)
        {
            UpdateProfilesMenu();
        }

        private void ProfileManager_ActiveProfileChanged(object? sender, EventArgs e)
        {
            UpdateProfilesMenu();
            UpdateCenterStatus();
        }

        // Call this method to build the Profiles submenu dynamically
        private void UpdateProfilesMenu()
        {
            // Assumes menuProfiles (profilesToolStripMenuItem) is a ToolStripMenuItem in your File menu
            // Created in the Designer
            if (profilesToolStripMenuItem == null)
                return;

            profilesToolStripMenuItem.DropDownItems.Clear();

            foreach (var profile in _profileManager.Profiles)
            {
                var menuItem = new ToolStripMenuItem(profile.Name);
                menuItem.Tag = profile.Name;
                menuItem.Click += ProfileMenuItem_Click;

                if (profile.Name == _profileManager.ActiveProfileName)
                    menuItem.Checked = true;

                profilesToolStripMenuItem.DropDownItems.Add(menuItem);
            }
        }

        private void ProfileMenuItem_Click(object? sender, EventArgs e)
        {
            if (sender is ToolStripMenuItem menuItem && menuItem.Tag is string profileName)
            {
                _profileManager.SetActiveProfile(profileName);
            }
        }

        #endregion

        #region Pianobar Event Handlers

        private void PianobarManager_Connected(object? sender, EventArgs e)
        {
            Invoke(() =>
            {
                var activeProfile = _profileManager.GetActiveProfile();
                if (activeProfile != null)
                {
                    _outputManager = new OutputManager(activeProfile.Settings);
                    _outputManager.ActiveStateChanged += OutputManager_ActiveStateChanged;
                    _outputManager.Start();
                }

                UpdateConnectionStatus(
                    _outputManager?.IsActive == true ? ConnectionStatus.ConnectedActive : ConnectionStatus.ConnectedIdle
                );
                UpdatePlayPauseButton();
            });
        }

        private void PianobarManager_Disconnected(object? sender, EventArgs e)
        {
            Invoke(() =>
            {
                _outputManager?.Stop();
                _outputManager = null;
                UpdateConnectionStatus(ConnectionStatus.Disconnected);
                UpdatePlayPauseButton();
            });
        }

        private void PianobarManager_SongChanged(object? sender, SongChangedEventArgs e)
        {
            Invoke(() =>
            {
                _outputManager?.UpdateSongMetadata(e);
            });
        }

        private void PianobarManager_StationChanged(object? sender, string e)
        {
            // Station change is handled via event feed
            UpdateCenterStatus();
        }

        private void PianobarManager_EventOccurred(object? sender, PianobarEventArgs e)
        {
            Invoke(() =>
            {
                // Update right status zone with event text
                if (statusLabelRight != null)
                {
                    statusLabelRight.Text = e.EventText;
                }
            });
        }

        private void OutputManager_ActiveStateChanged(object? sender, EventArgs e)
        {
            Invoke(() =>
            {
                if (_pianobarManager.IsConnected)
                {
                    UpdateConnectionStatus(
                        _outputManager?.IsActive == true ? ConnectionStatus.ConnectedActive : ConnectionStatus.ConnectedIdle
                    );
                }
            });
        }

        #endregion

        #region UI Update Methods

        private void UpdateConnectionStatus(ConnectionStatus status)
        {
            _currentStatus = status;

            if (statusLabelLeft == null)
                return;

            switch (status)
            {
                case ConnectionStatus.Disconnected:
                    statusLabelLeft.Text = "? Disconnected";
                    statusLabelLeft.ForeColor = Color.Red;
                    break;
                case ConnectionStatus.ConnectedIdle:
                    statusLabelLeft.Text = "? Connected (Idle)";
                    statusLabelLeft.ForeColor = Color.Green;
                    break;
                case ConnectionStatus.ConnectedActive:
                    statusLabelLeft.Text = "? Connected (Active)";
                    statusLabelLeft.ForeColor = Color.Blue;
                    break;
            }
        }

        private void UpdatePlayPauseButton()
        {
            // Uses btnPlayPause from the Designer
            if (btnPlayPause == null)
                return;

            if (!_pianobarManager.IsConnected)
            {
                btnPlayPause.Text = "Play";
                return;
            }

            btnPlayPause.Text = _pianobarManager.IsPlaying ? "Pause" : "Play";
        }

        private void StatusTimer_Tick(object? sender, EventArgs e)
        {
            _statusToggle = !_statusToggle;
            UpdateCenterStatus();
        }

        private void UpdateCenterStatus()
        {
            if (statusLabelCenter == null)
                return;

            if (_statusToggle)
            {
                // Show profile
                string profileName = _profileManager.ActiveProfileName ?? "None";
                statusLabelCenter.Text = $"Profile: {profileName}";
            }
            else
            {
                // Show station
                string station = _pianobarManager.CurrentStation ?? "None";
                statusLabelCenter.Text = $"Station: {station}";
            }
        }

        private void RestartOutputManager()
        {
            _outputManager?.Stop();

            var activeProfile = _profileManager.GetActiveProfile();
            if (activeProfile != null && _pianobarManager.IsConnected)
            {
                _outputManager = new OutputManager(activeProfile.Settings);
                _outputManager.ActiveStateChanged += OutputManager_ActiveStateChanged;
                _outputManager.Start();

                UpdateConnectionStatus(
                    _outputManager.IsActive ? ConnectionStatus.ConnectedActive : ConnectionStatus.ConnectedIdle
                );
            }
        }

        #endregion

        #region Cleanup

        protected override void OnFormClosing(FormClosingEventArgs e)
        {
            _statusTimer?.Stop();
            _pianobarManager?.Disconnect();
            _outputManager?.Dispose();
            base.OnFormClosing(e);
        }

        #endregion
    }
}