using System.Collections.Generic;

namespace NadekoBot.Core.Services
{
    public class LocalBotStringsProvider : IBotStringsProvider
    {
        private readonly IStringsSource _source;
        private IReadOnlyDictionary<string, Dictionary<string, string>> responseStrings;
        private IReadOnlyDictionary<string, Dictionary<string, CommandStrings>> commandStrings;
        
        public LocalBotStringsProvider(IStringsSource source)
        {
            _source = source;
            Reload();
        }
        
        public string GetText(string localeName, string key)
        {
            if (responseStrings.TryGetValue(localeName, out var langStrings)
                && langStrings.TryGetValue(key, out var text))
            {
                return text;
            }

            return null;
        }

        public void Reload()
        {
            responseStrings = _source.GetResponseStrings();
            commandStrings = _source.GetCommandStrings();
        }

        public CommandStrings GetCommandStrings(string localeName, string commandName)
        {
            if (commandStrings.TryGetValue(localeName, out var langStrings)
                && langStrings.TryGetValue(commandName, out var strings))
            {
                return strings;
            }

            return null;
        }
    }
}