using System.Collections.Generic;
using System.Linq;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Localization;

namespace gehGassi.Web.Controllers
{
    /// <summary>
    /// Controller für die Sprachverwaltung
    /// </summary>
    public class LanguageController : Controller
    {
        private readonly IStringLocalizerFactory _localizer;

        /// <summary>
        /// Erstellt eine Instanz
        /// </summary>
        /// <param name="localizer"></param>
        public LanguageController(IStringLocalizerFactory localizer)
        {
            _localizer = localizer;
        }

        /// <summary>
        /// Gibt die Ressource "Client" als Json-Dictionary zurück
        /// </summary>
        /// <param name="resource">Gewünschte Ressource</param>
        /// <param name="lang">Gewünchte Sprache ISO2 code</param>
        /// <param name="version">Versionsnummer wegen Caching</param>
        /// <returns>Json-Dictionary</returns>
#if DEBUG
        [ResponseCache(Duration = 1, VaryByQueryKeys = new[] { "resource", "lang", "version" })]
#else
        
        [ResponseCache(CacheProfileName = "ResourcesCache")]
#endif
        public ActionResult GetResource(string resource, string lang, string version)
        {
            var localizer = _localizer.Create(resource, "Localization");
            var items = localizer.GetAllStrings();
            Dictionary<string, string> dictionary = items.ToDictionary(k => k.Name, v => v.Value);
            return Json(dictionary);
        }
    }
}