holy! the server app is finished & model is nice now

OwnChar.Server/ServerOptions.cs

@@ -0,0 +1,59 @@
+using Mono.Options;
+using System.Diagnostics.CodeAnalysis;
+
+namespace OwnChar.Server;
+
+internal class ServerOptions
+{
+    private readonly OptionSet options;
+
+    public string? DbServer { get; set; }
+    public string? DbDatabase { get; set; }
+    public string? DbUser { get; set; }
+    public string? DbPassword { get; set; }
+    public string? ApiUrl { get; set; }
+
+    public ServerOptions(string[] args)
+    {
+        options = new()
+        {
+            {
+                "url=",
+                "Sets the api server url.",
+                dbhost => DbServer = dbhost
+            },
+            {
+                "host=",
+                "Sets the database server address.",
+                dbhost => DbServer = dbhost
+            },
+            {
+                "db=",
+                "Sets the database name.",
+                dbhost => DbServer = dbhost
+            },
+            {
+                "usr=",
+                "Sets the database user.",
+                dbhost => DbServer = dbhost
+            },
+            {
+                "pwd=",
+                "Sets the database password.",
+                dbhost => DbServer = dbhost
+            }
+        };
+
+        options.Parse(args);
+    }
+
+    [MemberNotNullWhen(true, nameof(ApiUrl), nameof(DbServer), nameof(DbDatabase), nameof(DbUser), nameof(DbPassword))]
+    public bool IsValid()
+    {
+        return !string.IsNullOrWhiteSpace(ApiUrl)
+            && !string.IsNullOrWhiteSpace(DbServer)
+            && !string.IsNullOrWhiteSpace(DbDatabase)
+            && !string.IsNullOrWhiteSpace(DbUser)
+            && !string.IsNullOrWhiteSpace(DbPassword);
+    }
+}