From 14d54836ec22a81177bdf8f61f0dd3e4ac1e91e6 Mon Sep 17 00:00:00 2001
From: firealarmss <caleb.k4php@gmail.com>
Date: Mon, 18 Nov 2024 18:00:24 -0600
Subject: [PATCH] Add support to handle emergency; add support to send p25
 pages

---
 WhackerLinkConsoleV2/ChannelBox.xaml.cs       |  21 ++++
 WhackerLinkConsoleV2/DigitalPageWindow.xaml   |  17 +++
 .../DigitalPageWindow.xaml.cs                 |  46 +++++++
 .../FlashingBackgroundManager.cs              | 118 ++++++++++++++++++
 WhackerLinkConsoleV2/MainWindow.xaml          |   4 +
 WhackerLinkConsoleV2/MainWindow.xaml.cs       |  56 ++++++++-
 .../WaveFilePlaybackManager.cs                |  98 +++++++++++++++
 7 files changed, 359 insertions(+), 1 deletion(-)
 create mode 100644 WhackerLinkConsoleV2/DigitalPageWindow.xaml
 create mode 100644 WhackerLinkConsoleV2/DigitalPageWindow.xaml.cs
 create mode 100644 WhackerLinkConsoleV2/FlashingBackgroundManager.cs
 create mode 100644 WhackerLinkConsoleV2/WaveFilePlaybackManager.cs

diff --git a/WhackerLinkConsoleV2/ChannelBox.xaml.cs b/WhackerLinkConsoleV2/ChannelBox.xaml.cs
index 9a875f5..6c1d6b7 100644
--- a/WhackerLinkConsoleV2/ChannelBox.xaml.cs
+++ b/WhackerLinkConsoleV2/ChannelBox.xaml.cs
@@ -30,8 +30,11 @@ namespace WhackerLinkConsoleV2.Controls
     {
         private readonly SelectedChannelsManager _selectedChannelsManager;
         private bool _pttState;
+        private bool _emergency;
         private string _lastSrcId = "0";
 
+        public FlashingBackgroundManager _flashingBackgroundManager;
+
         public event EventHandler<ChannelBox> PTTButtonClicked;
         public event PropertyChangedEventHandler PropertyChanged;
 
@@ -61,6 +64,23 @@ namespace WhackerLinkConsoleV2.Controls
             }
         }
 
+        public bool Emergency
+        {
+            get => _emergency;
+            set
+            {
+                _emergency = value;
+
+                Dispatcher.Invoke(() =>
+                {
+                    if (value)
+                        _flashingBackgroundManager.Start();
+                    else
+                        _flashingBackgroundManager.Stop();
+                });
+            }
+        }
+
         public string VoiceChannel { get; set; }
 
         public bool IsEditMode { get; set; }
@@ -81,6 +101,7 @@ namespace WhackerLinkConsoleV2.Controls
             InitializeComponent();
             DataContext = this;
             _selectedChannelsManager = selectedChannelsManager;
+            _flashingBackgroundManager = new FlashingBackgroundManager(this);
             ChannelName = channelName;
             SystemName = $"System: {systemName}";
             LastSrcId = $"Last SRC: {LastSrcId}";
diff --git a/WhackerLinkConsoleV2/DigitalPageWindow.xaml b/WhackerLinkConsoleV2/DigitalPageWindow.xaml
new file mode 100644
index 0000000..539438d
--- /dev/null
+++ b/WhackerLinkConsoleV2/DigitalPageWindow.xaml
@@ -0,0 +1,17 @@
+<Window x:Class="WhackerLinkConsoleV2.DigitalPageWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:local="clr-namespace:WhackerLinkConsoleV2"
+        mc:Ignorable="d"
+        Title="P25 Page" Height="200" Width="300" WindowStartupLocation="CenterOwner">
+    <Grid>
+        <Button Content="Send" Name="SendPageButton" HorizontalAlignment="Center" Margin="0,97,0,0" VerticalAlignment="Top" Click="SendPageButton_Click"/>
+        <TextBox HorizontalAlignment="Center" Name="DstIdText" Margin="0,74,0,0" TextWrapping="Wrap" Text="" MaxLength="12" VerticalAlignment="Top" Width="120"/>
+        <Label Content="Dst ID:" HorizontalAlignment="Left" Margin="40,70,0,0" VerticalAlignment="Top"/>
+        <ComboBox HorizontalAlignment="Center"  Name="SystemCombo" Margin="0,47,0,0" VerticalAlignment="Top" Width="120"/>
+        <Label Content="System:" HorizontalAlignment="Left" Margin="35,44,0,0" VerticalAlignment="Top"/>
+
+    </Grid>
+</Window>
diff --git a/WhackerLinkConsoleV2/DigitalPageWindow.xaml.cs b/WhackerLinkConsoleV2/DigitalPageWindow.xaml.cs
new file mode 100644
index 0000000..0110573
--- /dev/null
+++ b/WhackerLinkConsoleV2/DigitalPageWindow.xaml.cs
@@ -0,0 +1,46 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Shapes;
+using WhackerLinkLib.Models.Radio;
+
+namespace WhackerLinkConsoleV2
+{
+    /// <summary>
+    /// Interaction logic for DigitalPageWindow.xaml
+    /// </summary>
+    public partial class DigitalPageWindow : Window
+    {
+        public List<Codeplug.System> systems = new List<Codeplug.System>();
+
+        public string DstId = string.Empty;
+        public Codeplug.System RadioSystem = null;
+
+        public DigitalPageWindow(List<Codeplug.System> systems)
+        {
+            InitializeComponent();
+            this.systems = systems;
+
+            SystemCombo.DisplayMemberPath = "Name";
+            SystemCombo.ItemsSource = systems;
+            SystemCombo.SelectedIndex = 0;
+        }
+
+        private void SendPageButton_Click(object sender, RoutedEventArgs e)
+        {
+            RadioSystem = SystemCombo.SelectedItem as Codeplug.System;
+            DstId = DstIdText.Text;
+            DialogResult = true;
+            Close();
+        }
+    }
+}
diff --git a/WhackerLinkConsoleV2/FlashingBackgroundManager.cs b/WhackerLinkConsoleV2/FlashingBackgroundManager.cs
new file mode 100644
index 0000000..3190ebe
--- /dev/null
+++ b/WhackerLinkConsoleV2/FlashingBackgroundManager.cs
@@ -0,0 +1,118 @@
+/*
+* WhackerLink - WhackerLinkConsoleV2
+*
+* This program is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program.  If not, see <http://www.gnu.org/licenses/>.
+* 
+* Copyright (C) 2024 Caleb, K4PHP
+* 
+*/
+
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Media;
+using System.Windows.Threading;
+
+namespace WhackerLinkConsoleV2
+{
+    public class FlashingBackgroundManager
+    {
+        private readonly Control _control;
+        private readonly Canvas _canvas;
+        private readonly UserControl _userControl;
+        private readonly Window _mainWindow;
+        private readonly DispatcherTimer _timer;
+        private Brush _originalControlBackground;
+        private Brush _originalCanvasBackground;
+        private Brush _originalUserControlBackground;
+        private Brush _originalMainWindowBackground;
+        private bool _isFlashing;
+
+        public FlashingBackgroundManager(Control control = null, Canvas canvas = null, UserControl userControl = null, Window mainWindow = null, int intervalMilliseconds = 450)
+        {
+            _control = control;
+            _canvas = canvas;
+            _userControl = userControl;
+            _mainWindow = mainWindow;
+
+            if (_control == null && _canvas == null && _userControl == null && _mainWindow == null)
+                throw new ArgumentException("At least one of control, canvas, userControl, or mainWindow must be provided.");
+
+            _timer = new DispatcherTimer
+            {
+                Interval = TimeSpan.FromMilliseconds(intervalMilliseconds)
+            };
+            _timer.Tick += OnTimerTick;
+        }
+
+        public void Start()
+        {
+            if (_isFlashing)
+                return;
+
+            if (_control != null)
+                _originalControlBackground = _control.Background;
+
+            if (_canvas != null)
+                _originalCanvasBackground = _canvas.Background;
+
+            if (_userControl != null)
+                _originalUserControlBackground = _userControl.Background;
+
+            if (_mainWindow != null)
+                _originalMainWindowBackground = _mainWindow.Background;
+
+            _isFlashing = true;
+            _timer.Start();
+        }
+
+        public void Stop()
+        {
+            if (!_isFlashing)
+                return;
+
+            _timer.Stop();
+
+            if (_control != null)
+                _control.Background = _originalControlBackground;
+
+            if (_canvas != null)
+                _canvas.Background = _originalCanvasBackground;
+
+            if (_userControl != null)
+                _userControl.Background = _originalUserControlBackground;
+
+            if (_mainWindow != null && _originalMainWindowBackground != null)
+                _mainWindow.Background = _originalMainWindowBackground;
+
+            _isFlashing = false;
+        }
+
+        private void OnTimerTick(object sender, EventArgs e)
+        {
+            Brush flashingColor = Brushes.Red;
+
+            if (_control != null)
+                _control.Background = _control.Background == Brushes.DarkRed ? _originalControlBackground : Brushes.DarkRed;
+
+            if (_canvas != null)
+                _canvas.Background = _canvas.Background == flashingColor ? _originalCanvasBackground : flashingColor;
+
+            if (_userControl != null)
+                _userControl.Background = _userControl.Background == Brushes.DarkRed ? _originalUserControlBackground : Brushes.DarkRed;
+
+            if (_mainWindow != null)
+                _mainWindow.Background = _mainWindow.Background == flashingColor ? _originalMainWindowBackground : flashingColor;
+        }
+    }
+}
diff --git a/WhackerLinkConsoleV2/MainWindow.xaml b/WhackerLinkConsoleV2/MainWindow.xaml
index c2d32f3..96218f7 100644
--- a/WhackerLinkConsoleV2/MainWindow.xaml
+++ b/WhackerLinkConsoleV2/MainWindow.xaml
@@ -22,6 +22,10 @@
                     <MenuItem Header="Add Alert Tone" Click="AddAlertTone_Click"/>
                 </MenuItem>
             </MenuItem>
+            <MenuItem Header="Page">
+                <MenuItem Header="P25 Page" Click="P25Page_Click" />
+            </MenuItem>
+            <MenuItem Header="Clear Emergency" Click="ClearEmergency_Click" />
         </Menu>
 
         <ScrollViewer VerticalScrollBarVisibility="Auto" HorizontalScrollBarVisibility="Disabled" Grid.Row="1">
diff --git a/WhackerLinkConsoleV2/MainWindow.xaml.cs b/WhackerLinkConsoleV2/MainWindow.xaml.cs
index aae68eb..dabfd9f 100644
--- a/WhackerLinkConsoleV2/MainWindow.xaml.cs
+++ b/WhackerLinkConsoleV2/MainWindow.xaml.cs
@@ -55,6 +55,8 @@ namespace WhackerLinkConsoleV2
 
         private SettingsManager _settingsManager = new SettingsManager();
         private SelectedChannelsManager _selectedChannelsManager;
+        private FlashingBackgroundManager _flashingManager;
+        private WaveFilePlaybackManager _emergencyAlertPlayback;
         private WebSocketManager _webSocketManager = new WebSocketManager();
 
         private readonly WaveInEvent _waveIn;
@@ -66,6 +68,8 @@ namespace WhackerLinkConsoleV2
             InitializeComponent();
             _settingsManager.LoadSettings();
             _selectedChannelsManager = new SelectedChannelsManager();
+            _flashingManager = new FlashingBackgroundManager(null, ChannelsCanvas, null, this);
+            _emergencyAlertPlayback = new WaveFilePlaybackManager(System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "emergency.wav"));
 
             _waveIn = new WaveInEvent
             {
@@ -171,6 +175,7 @@ namespace WhackerLinkConsoleV2
                     IWebSocketHandler handler = _webSocketManager.GetWebSocketHandler(system.Name);
                     handler.OnVoiceChannelResponse += HandleVoiceResponse;
                     handler.OnVoiceChannelRelease += HandleVoiceRelease;
+                    handler.OnEmergencyAlarmResponse += HandleEmergencyAlarmResponse;
                     handler.OnAudioData += HandleReceivedAudio;
 
                     handler.OnUnitRegistrationResponse += (response) =>
@@ -352,9 +357,20 @@ namespace WhackerLinkConsoleV2
             }
         }
 
+        private void P25Page_Click(object sender, RoutedEventArgs e)
+        {
+            DigitalPageWindow pageWindow = new DigitalPageWindow(Codeplug.Systems);
+            pageWindow.Owner = this;
+            if (pageWindow.ShowDialog() == true)
+            {
+                IWebSocketHandler handler = _webSocketManager.GetWebSocketHandler(pageWindow.RadioSystem.Name);
+                handler.SendMessage(PacketFactory.CreateCallAlertRequest(pageWindow.RadioSystem.Rid, pageWindow.DstId));
+            }
+        }
+
         private void SelectWidgets_Click(object sender, RoutedEventArgs e)
         {
-            var widgetSelectionWindow = new WidgetSelectionWindow();
+            WidgetSelectionWindow widgetSelectionWindow = new WidgetSelectionWindow();
             widgetSelectionWindow.Owner = this;
             if (widgetSelectionWindow.ShowDialog() == true)
             {
@@ -367,6 +383,33 @@ namespace WhackerLinkConsoleV2
             }
         }
 
+        private void HandleEmergencyAlarmResponse(EMRG_ALRM_RSP response)
+        {
+            bool forUs = false;
+
+            foreach (ChannelBox channel in _selectedChannelsManager.GetSelectedChannels())
+            {
+                Codeplug.System system = Codeplug.GetSystemForChannel(channel.ChannelName);
+                Codeplug.Channel cpgChannel = Codeplug.GetChannelByName(channel.ChannelName);
+
+                if (response.DstId == cpgChannel.Tgid)
+                {
+                    forUs = true;
+                    channel.Emergency = true;
+                    channel.LastSrcId = response.SrcId;
+                }
+            }
+
+            if (forUs)
+            {
+                Dispatcher.Invoke(() =>
+                {
+                    _flashingManager.Start();
+                    _emergencyAlertPlayback.Start();
+                });
+            }
+        }
+
         private void HandleReceivedAudio(byte[] audioData, VoiceChannel voiceChannel)
         {
             foreach (ChannelBox channel in _selectedChannelsManager.GetSelectedChannels())
@@ -625,5 +668,16 @@ namespace WhackerLinkConsoleV2
             _settingsManager.SaveSettings();
             base.OnClosing(e);
         }
+
+        private void ClearEmergency_Click(object sender, RoutedEventArgs e)
+        {
+            _emergencyAlertPlayback.Stop();
+            _flashingManager.Stop();
+
+            foreach (ChannelBox channel in _selectedChannelsManager.GetSelectedChannels())
+            {
+                channel.Emergency = false;
+            }
+        }
     }
 }
diff --git a/WhackerLinkConsoleV2/WaveFilePlaybackManager.cs b/WhackerLinkConsoleV2/WaveFilePlaybackManager.cs
new file mode 100644
index 0000000..10fe26b
--- /dev/null
+++ b/WhackerLinkConsoleV2/WaveFilePlaybackManager.cs
@@ -0,0 +1,98 @@
+/*
+* WhackerLink - WhackerLinkConsoleV2
+*
+* This program is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program.  If not, see <http://www.gnu.org/licenses/>.
+* 
+* Copyright (C) 2024 Caleb, K4PHP
+* 
+*/
+
+using NAudio.Wave;
+using System.Windows.Threading;
+
+namespace WhackerLinkConsoleV2
+{
+    public class WaveFilePlaybackManager
+    {
+        private readonly string _waveFilePath;
+        private readonly DispatcherTimer _timer;
+        private WaveOutEvent _waveOut;
+        private AudioFileReader _audioFileReader;
+        private bool _isPlaying;
+
+        public WaveFilePlaybackManager(string waveFilePath, int intervalMilliseconds = 500)
+        {
+            if (string.IsNullOrEmpty(waveFilePath))
+                throw new ArgumentNullException(nameof(waveFilePath), "Wave file path cannot be null or empty.");
+
+            _waveFilePath = waveFilePath;
+            _timer = new DispatcherTimer
+            {
+                Interval = TimeSpan.FromMilliseconds(intervalMilliseconds)
+            };
+            _timer.Tick += OnTimerTick;
+        }
+
+        public void Start()
+        {
+            if (_isPlaying)
+                return;
+
+            InitializeAudio();
+            _isPlaying = true;
+            _timer.Start();
+        }
+
+        public void Stop()
+        {
+            if (!_isPlaying)
+                return;
+
+            _timer.Stop();
+            DisposeAudio();
+            _isPlaying = false;
+        }
+
+        private void OnTimerTick(object sender, EventArgs e)
+        {
+            PlayAudio();
+        }
+
+        private void InitializeAudio()
+        {
+            _audioFileReader = new AudioFileReader(_waveFilePath);
+            _waveOut = new WaveOutEvent();
+            _waveOut.Init(_audioFileReader);
+        }
+
+        private void PlayAudio()
+        {
+            if (_waveOut != null && _waveOut.PlaybackState != PlaybackState.Playing)
+            {
+                _waveOut.Stop();
+                _audioFileReader.Position = 0;
+                _waveOut.Play();
+            }
+        }
+
+        private void DisposeAudio()
+        {
+            _waveOut?.Stop();
+            _waveOut?.Dispose();
+            _audioFileReader?.Dispose();
+            _waveOut = null;
+            _audioFileReader = null;
+        }
+    }
+}