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;
    }
}