72 lines
2.3 KiB
C#
72 lines
2.3 KiB
C#
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using System;
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using System.Dynamic;
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using System.Reflection;
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using System.Runtime.CompilerServices;
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using Newtonsoft.Json;
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[assembly: InternalsVisibleTo("deployment.tests")]
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namespace greyn.Deployment
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{
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public static class Configurator<T> where T : new()
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{
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private const string confpath = "appsettings.json";
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private static FileSystemWatcher appsettingsWatcher = new FileSystemWatcher(".");
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public static event EventHandler Changed;
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public static event System.IO.ErrorEventHandler Error;
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private static T config;
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public static T Load()
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{
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if (File.Exists(confpath))
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{
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/*
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* if the configuration expects new values we write them in.
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* if you left other junk for whatever reason, get rekt
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*/
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config = JsonConvert.DeserializeObject<T>(File.ReadAllText(confpath)) ?? new T();
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}
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else
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{
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config = new T();
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}
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File.WriteAllText(confpath, JsonConvert.SerializeObject(config, Formatting.Indented));
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appsettingsWatcher.Filter = confpath;
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appsettingsWatcher.NotifyFilter = NotifyFilters.LastWrite
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| NotifyFilters.Security
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| NotifyFilters.Size;
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appsettingsWatcher.Changed += internalOnChanged;
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appsettingsWatcher.Created += internalOnChanged;
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appsettingsWatcher.Deleted += internalOnChanged;
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appsettingsWatcher.Renamed += internalOnChanged;
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appsettingsWatcher.Error += Error;
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appsettingsWatcher.EnableRaisingEvents = true;
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return config;
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}
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internal static void internalOnChanged(object sender, FileSystemEventArgs e)
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{
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appsettingsWatcher.EnableRaisingEvents = false;
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Load();
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Changed(sender, new ConfigChangedEventArgs(){NewConfig = config});
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}
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//I would like to just pudate the values on our held reference, but we'd have to update each value by reflection.
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//2lazy.
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public class ConfigChangedEventArgs : EventArgs
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{
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public T NewConfig;
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}
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}
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}
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