Initial commit to new repository

src/AxCopilot/Services/OperationModePolicy.cs

@@ -0,0 +1,43 @@
+using AxCopilot.Models;
+
+namespace AxCopilot.Services;
+
+public static class OperationModePolicy
+{
+    public const string InternalMode = "internal";
+    public const string ExternalMode = "external";
+
+    public static string Normalize(string? mode)
+    {
+        var token = (mode ?? "").Trim().ToLowerInvariant();
+        return token == ExternalMode ? ExternalMode : InternalMode;
+    }
+
+    public static bool IsInternal(AppSettings? settings)
+        => IsInternal(settings?.OperationMode);
+
+    public static bool IsInternal(string? mode)
+        => string.Equals(Normalize(mode), InternalMode, StringComparison.OrdinalIgnoreCase);
+
+    public static bool IsBlockedAgentToolInInternalMode(string toolName, string? target)
+    {
+        if (string.Equals(toolName, "http_tool", StringComparison.OrdinalIgnoreCase))
+            return true;
+
+        if (string.Equals(toolName, "open_external", StringComparison.OrdinalIgnoreCase))
+            return IsExternalUrl(target);
+
+        return false;
+    }
+
+    public static bool IsExternalUrl(string? value)
+    {
+        if (string.IsNullOrWhiteSpace(value))
+            return false;
+
+        if (!Uri.TryCreate(value, UriKind.Absolute, out var uri))
+            return false;
+
+        return uri.Scheme == Uri.UriSchemeHttp || uri.Scheme == Uri.UriSchemeHttps;
+    }
+}