using System.IO.Abstractions;
using System.Text.Json;

namespace Quadarax.Application.QLiberace.Common.Configuration
{
    public static class OlbrcConfiguration
    {

        public static IFileSystem FileSystem { get; set; }
        public static string ConfigurationFileName{ get; set; }

        static OlbrcConfiguration()
        {
            FileSystem = new FileSystem();
            ConfigurationFileName = "qlbrc.json";
        }

        public static Settings? Get()
        {
            if (!FileSystem.File.Exists(ConfigurationFileName))
                return null;

            return JsonSerializer.Deserialize<Settings>(FileSystem.File.ReadAllText(ConfigurationFileName));
        }
        public static ModuleConfiguration Get(string moduleName)
        {
            var result = Get();
            if (result == null)
                throw new InvalidOperationException(
                    $"Cannot obtain configuration from file '{ConfigurationFileName}'.");
            var module = result.Modules.FirstOrDefault(x =>
                string.Equals(x.Code, moduleName, StringComparison.InvariantCultureIgnoreCase));
            if (module==null)
                throw new InvalidOperationException(
                    $"Module '{moduleName}' not found in configuration file '{ConfigurationFileName}'.");

            return module;
        }

    }
}