using System.Globalization;

namespace Convert_It_Online.Services
{
    public class UrlTranslationService : IUrlTranslationService
    {
        private readonly Dictionary<string, Dictionary<string, string>> _areaTranslations;
        private readonly Dictionary<string, Dictionary<string, string>> _controllerTranslations;
        private readonly Dictionary<string, Dictionary<string, string>> _reverseAreaTranslations;
        private readonly Dictionary<string, Dictionary<string, string>> _reverseControllerTranslations;

        public UrlTranslationService()
        {
            _areaTranslations = new Dictionary<string, Dictionary<string, string>>
            {
                ["pt-BR"] = new Dictionary<string, string>
                {
                    ["TextTools"] = "ferramentas-de-texto",
                    ["ImageConverters"] = "conversores-de-imagem"
                },
                ["es-MX"] = new Dictionary<string, string>
                {
                    ["TextTools"] = "herramientas-de-texto",
                    ["ImageConverters"] = "convertidores-de-imagen"
                },
                ["es-CL"] = new Dictionary<string, string>
                {
                    ["TextTools"] = "herramientas-de-texto",
                    ["ImageConverters"] = "convertidores-de-imagen"
                },
                ["es-PY"] = new Dictionary<string, string>
                {
                    ["TextTools"] = "herramientas-de-texto",
                    ["ImageConverters"] = "convertidores-de-imagen"
                }
            };

            _controllerTranslations = new Dictionary<string, Dictionary<string, string>>
            {
                ["pt-BR"] = new Dictionary<string, string>
                {
                    ["CaseConverter"] = "conversor-de-maiusculas-minusculas",
                    ["JpgToWebp"] = "jpg-para-webp"
                },
                ["es-MX"] = new Dictionary<string, string>
                {
                    ["CaseConverter"] = "conversor-de-mayusculas-minusculas",
                    ["JpgToWebp"] = "jpg-a-webp"
                },
                ["es-CL"] = new Dictionary<string, string>
                {
                    ["CaseConverter"] = "conversor-de-mayusculas-minusculas",
                    ["JpgToWebp"] = "jpg-a-webp"
                },
                ["es-PY"] = new Dictionary<string, string>
                {
                    ["CaseConverter"] = "conversor-de-mayusculas-minusculas",
                    ["JpgToWebp"] = "jpg-a-webp"
                }
            };

            // Create reverse mappings for lookup
            _reverseAreaTranslations = CreateReverseMappings(_areaTranslations);
            _reverseControllerTranslations = CreateReverseMappings(_controllerTranslations);
        }

        private Dictionary<string, Dictionary<string, string>> CreateReverseMappings(
            Dictionary<string, Dictionary<string, string>> original)
        {
            var reverse = new Dictionary<string, Dictionary<string, string>>();
            
            foreach (var culture in original.Keys)
            {
                reverse[culture] = new Dictionary<string, string>();
                foreach (var kvp in original[culture])
                {
                    reverse[culture][kvp.Value] = kvp.Key;
                }
            }
            
            return reverse;
        }

        public string TranslateArea(string area, CultureInfo culture)
        {
            var cultureName = culture.Name;
            
            if (_areaTranslations.TryGetValue(cultureName, out var areaDict) &&
                areaDict.TryGetValue(area, out var translatedArea))
            {
                return translatedArea;
            }
            
            return area.ToLowerInvariant();
        }

        public string TranslateController(string controller, CultureInfo culture)
        {
            var cultureName = culture.Name;
            
            if (_controllerTranslations.TryGetValue(cultureName, out var controllerDict) &&
                controllerDict.TryGetValue(controller, out var translatedController))
            {
                return translatedController;
            }
            
            return controller.ToLowerInvariant();
        }

        public string? GetOriginalArea(string translatedArea, CultureInfo culture)
        {
            var cultureName = culture.Name;
            
            if (_reverseAreaTranslations.TryGetValue(cultureName, out var areaDict) &&
                areaDict.TryGetValue(translatedArea, out var originalArea))
            {
                return originalArea;
            }
            
            return null;
        }

        public string? GetOriginalController(string translatedController, CultureInfo culture)
        {
            var cultureName = culture.Name;
            
            if (_reverseControllerTranslations.TryGetValue(cultureName, out var controllerDict) &&
                controllerDict.TryGetValue(translatedController, out var originalController))
            {
                return originalController;
            }
            
            return null;
        }

        public string GetLocalizedUrl(string area, string controller, string action, CultureInfo culture)
        {
            var translatedArea = TranslateArea(area, culture);
            var translatedController = TranslateController(controller, culture);
            
            return $"/{culture.Name}/{translatedArea}/{translatedController}";
        }
    }
}