Adds configuration system. (#125)

Projects/Scripts/Configuration/EmailConfiguration.cs

@@ -0,0 +1,75 @@
+using System.IO;
+using System.Text.Json.Serialization;
+using MimeKit;
+using Server.Json;
+
+namespace Server.Configurations
+{
+  public static class EmailConfiguration
+  {
+    public static readonly bool EmailEnabled;
+    public static readonly MailboxAddress FromAddress;
+    public static readonly MailboxAddress CrashAddress;
+    public static readonly MailboxAddress SpeechLogPageAddress;
+    public static readonly string EmailServer;
+    public static readonly int EmailPort;
+    public static readonly string EmailServerUsername;
+    public static readonly string EmailServerPassword;
+    public static readonly int EmailSendRetryCount = 5; // seconds
+    public static readonly int EmailSendRetryDelay = 2; // seconds
+
+    static EmailConfiguration()
+    {
+      string filePath = Path.Join(Core.BaseDirectory, "Configuration/email-settings.json");
+      Settings settings = JsonConfig.Deserialize<Settings>(filePath) ?? new Settings();
+
+      if (settings.emailServer == null || settings.fromAddress == null)
+      {
+        JsonConfig.Serialize(filePath, settings);
+        return;
+      }
+
+      EmailEnabled = true;
+      FromAddress = new MailboxAddress(settings.fromName, settings.fromAddress);
+      CrashAddress = new MailboxAddress(settings.crashName, settings.crashAddress);
+      SpeechLogPageAddress = new MailboxAddress(settings.speechLogPageName, settings.speechLogPageAddress);
+      EmailServer = settings.emailServer;
+      EmailPort = settings.emailPort;
+      EmailServerUsername = settings.emailUsername;
+      EmailServerPassword = settings.emailPassword;
+    }
+
+    internal class Settings
+    {
+      [JsonPropertyName("fromAddress")]
+      internal string fromAddress { get; set; }
+
+      [JsonPropertyName("fromName")]
+      internal string fromName { get; set; }
+
+      [JsonPropertyName("crashAddress")]
+      internal string crashAddress { get; set; }
+
+      [JsonPropertyName("crashName")]
+      internal string crashName { get; set; }
+
+      [JsonPropertyName("speechLogPageAddress")]
+      internal string speechLogPageAddress { get; set; }
+
+      [JsonPropertyName("speechLogPageName")]
+      internal string speechLogPageName { get; set; }
+
+      [JsonPropertyName("emailServer")]
+      internal string emailServer { get; set; }
+
+      [JsonPropertyName("emailPort")]
+      internal int emailPort { get; set; }
+
+      [JsonPropertyName("emailUsername")]
+      internal string emailUsername { get; set; }
+
+      [JsonPropertyName("emailPassword")]
+      internal string emailPassword { get; set; }
+    }
+  }
+}