using System.Collections.Generic;
using AnP.Types;
using AnP.Utils;
using AnP.Interfaces.Application;

namespace AnP.Managers{
    public class I18NManager{
        
        private static readonly Dictionary<string, Dictionary<string, I18NSentenceType>> DEFAULT_SENTENCES = new Dictionary<string, Dictionary<string, I18NSentenceType>>{
            {"english", new Dictionary<string, I18NSentenceType>{
                {"greeting", new I18NSentenceType.Text("Hello, World!")}
            }}
        };
        
        private static readonly Options GET_OPTIONS = new Options();

        public AnPInterface anp;
        private Dictionary<string, Dictionary<string, I18NSentenceType>> sentences;
        private string language;
        private string default_language;

        public I18NManager(AnPInterface anp){
            this.anp = anp;
            sentences = new Dictionary<string, Dictionary<string, I18NSentenceType>>(DEFAULT_SENTENCES);
            language = default_language = "english";
        }

        public string get(object strings, object? inputs = null, object? languages = null, int custom_options = 0){
            
            List<string> keys = Common.get_keys(strings);
            Options options = new Options(custom_options, GET_OPTIONS);

            if(keys.Count != 0){

                List<string> languages_used = new List<string>();

                foreach(string language in Common.get_keys(languages).Concat<string>(
                    new List<string>{this.language, default_language}
                ).Concat<string>(sentences.Keys))
                    if(!languages_used.Contains(language)){
                        languages_used.Add(language);
                        if(sentences.ContainsKey(language))
                            foreach(string key in keys)
                                if(sentences[language].ContainsKey(key))
                                    return sentences[language][key] switch{
                                        I18NSentenceType.Text text => text.value,
                                        I18NSentenceType.List list => string.Join("", list.value),
                                        _ => ""
                                    };
                    }
            };
            return Common.get_strings(strings).FirstOrDefault() ?? "";
        }

        public void add(object? items, int custom_options = 0){}

    }
}