WIP

2023-02-07 13:08:25 +01:00
parent 31bf148e0f
commit 5277c3518f
6 changed files with 584 additions and 217 deletions
--- a/TestApp/Configuration/ConfigurationManager.cs
+++ b/TestApp/Configuration/ConfigurationManager.cs
@@ -0,0 +1,144 @@
+using System.Diagnostics.CodeAnalysis;
+using System.Text.Json;
+
+namespace TestApp.Configuration
+{
+    internal class ConfigurationManager
+    {
+        const string _CONFIGURATION_FILE_PATH = "/data/TestApp.json";
+
+        private Thread _FileWatcherThread;
+        private FileInfo _LastFileInfo;
+
+        private Settings _Settings;
+        public Settings Settings {
+            get => _Settings;
+            [MemberNotNull(nameof(_Settings))]
+            private set { 
+                _Settings = value;
+                SettingsChanged?.Invoke(this, Settings);
+            }
+        }
+        
+        public ConfigurationManager()
+        {
+            _LastFileInfo = new FileInfo(_CONFIGURATION_FILE_PATH);
+            LoadSettings();
+            _FileWatcherThread = new Thread(FileWatcherLoop) { IsBackground = true };
+            _FileWatcherThread.Start();
+        }
+
+        private void FileWatcherLoop()
+        {
+            while (true) {
+                var currentFileInfo = new FileInfo(_CONFIGURATION_FILE_PATH);
+                if (ConfigFileChanged(currentFileInfo))
+                {
+                    LoadSettings();
+                    _LastFileInfo = currentFileInfo;
+                }
+                Thread.Sleep(1000);
+            }
+        }
+
+        private bool ConfigFileChanged(FileInfo currentFileInfo) {
+            if (!currentFileInfo.Exists)
+            {
+                return _LastFileInfo.Exists;
+            }
+
+            if (!_LastFileInfo.Exists)
+            {
+                return true;
+            }
+
+            return currentFileInfo.LastWriteTimeUtc != _LastFileInfo.LastWriteTimeUtc;
+        }
+
+        [MemberNotNull(nameof(_Settings))]
+        private void LoadSettings() {
+            Console.WriteLine("(Re)Loading configuration file ...");
+
+            if (!File.Exists(_CONFIGURATION_FILE_PATH))
+            {
+                InitDefaultSettings();
+                SaveSettings();
+                return;
+            }
+
+            try
+            {
+                var fileContent = File.ReadAllText(_CONFIGURATION_FILE_PATH);
+                var fileSettings = JsonSerializer.Deserialize<Settings>(fileContent) 
+                    ?? throw new ArgumentNullException("Deserialization returned null");
+                Settings = fileSettings;
+            } catch (Exception ex)
+            {
+                Console.WriteLine($"Error reading configuration file '{_CONFIGURATION_FILE_PATH}': {ex.Message}");
+                if (_Settings is null) {
+                    Console.WriteLine("Using build in default settings!");
+                    InitDefaultSettings();
+                }
+            }
+        }
+
+        private void SaveSettings()
+        {
+            try
+            {
+                var fileContent = JsonSerializer.Serialize(Settings);
+                File.WriteAllText(_CONFIGURATION_FILE_PATH, fileContent);
+                _LastFileInfo = new FileInfo(_CONFIGURATION_FILE_PATH);
+            } catch (Exception ex)
+            {
+                Console.WriteLine($"Error saving configuration file '{_CONFIGURATION_FILE_PATH}': {ex.Message}");
+            }
+        }
+
+        [MemberNotNull(nameof(_Settings))]
+        private void InitDefaultSettings() {
+            Settings = new Settings() {
+                ChargerDriver = Settings.DEFAULT_CHARGER_DRIVER,
+                ChargerAddress = Settings.DEFAULT_CHARGER_ADDRESS,
+                ChargerPort = Settings.DEFAULT_CHARGER_PORT,
+                Mode = 1,
+                ModeSettings = new ModeSettings[] {
+                    new ModeSettings
+                    {
+                        ProcessVariable = ProcessVariable.ActivePowerPositive,
+                        SetPoint = 32,
+                        NegativePid = new PidSetting() {
+                            KP = 0,
+                            KI = 1,
+                            KD = 0,
+                        },
+                        PositivePid = new PidSetting()
+                        {
+                            KP = 0,
+                            KI = 1,
+                            KD = 0,
+                        }
+                    },
+                    new ModeSettings
+                    {
+                        ProcessVariable = ProcessVariable.ActivePowerNegative,
+                        SetPoint = 100,
+                        NegativePid = new PidSetting() {
+                            KP = 0,
+                            KI = 1,
+                            KD = 0,
+                        },
+                        PositivePid = new PidSetting()
+                        {
+                            KP = 0,
+                            KI = 1,
+                            KD = 0,
+                        }
+                    },
+                }
+            };
+        }
+
+        public event EventHandler<Settings>? SettingsChanged;
+    }
+}