using ZymonicGateway.Options;
using ZymonicServices;

namespace ZymonicGateway.Services;

public static class ZymonicGatewaySettingsSeeder
{
    public static void Apply(ZymonicGatewayOptions options, IZymonicSettings settings, ILogger logger)
    {
        SetIfNotBlank(settings, "BaseUri", options.ZymonicServer.BaseUri);
        SetIfNotBlank(settings, "SystemName", options.ZymonicServer.SystemName);
        SetIfNotBlank(settings, "ClientId", options.ZymonicServer.ClientId);
        SetIfNotBlank(settings, "Scope", options.ZymonicServer.Scope);
        SetIfNotBlank(settings, "Username", options.ZymonicServer.Username);
        SetIfNotBlank(settings, "Password", options.ZymonicServer.Password);
        SetIfNotBlank(settings, "RequestResponseLogDirectory", options.RequestResponseLogs.Directory);
        settings.Setting("RequestResponseLogRetentionDays", Math.Max(1, options.RequestResponseLogs.RetentionDays).ToString());

        var clientSecret = options.ZymonicServer.ClientSecret;
        if (options.ZymonicServer.PromptForClientSecret && string.IsNullOrWhiteSpace(clientSecret))
        {
            Console.Write("Zymonic client secret: ");
            clientSecret = ReadSecret();
            Console.WriteLine();
        }

        SetIfNotBlank(settings, "ClientSecret", clientSecret);
        logger.LogInformation("Applied ZymonicGateway server settings for system {SystemName}.", options.ZymonicServer.SystemName);
    }

    private static void SetIfNotBlank(IZymonicSettings settings, string key, string? value)
    {
        if (!string.IsNullOrWhiteSpace(value))
        {
            settings.Setting(key, value);
        }
    }

    private static string ReadSecret()
    {
        var secret = "";
        ConsoleKeyInfo key;
        while ((key = Console.ReadKey(intercept: true)).Key != ConsoleKey.Enter)
        {
            if (key.Key == ConsoleKey.Backspace)
            {
                secret = secret.Length > 0 ? secret[..^1] : secret;
                continue;
            }

            secret += key.KeyChar;
        }

        return secret;
    }
}