using Microsoft.Extensions.Configuration;

namespace Kit.Helpers
{
    public interface IConfigurationItem
    {
        DateTime FillDate { get; set; }

        void Init(IConfiguration configuration);
    }
    public class ConfigurationHelper
    {
        private readonly string _prefix;

        private readonly IConfiguration _configuration;

        public ConfigurationHelper(IConfiguration configuration)
            : this(configuration, string.Empty)
        {
            _configuration = configuration;
        }

        public ConfigurationHelper(IConfiguration configuration, string prefix)
        {
            _configuration = configuration;
            _prefix = prefix;
        }

        private string CreateKey(string itemKey)
        {
            return string.IsNullOrEmpty(_prefix) ? itemKey.ToString() : (_prefix + ":" + itemKey);
        }

        public string GetConnectionString(string name, bool required = true)
        {
            string text = CreateKey(name);
            string connectionString = _configuration.GetConnectionString(text);
            if (required)
            {
                Check.StringArgumentIsNotNullOrEmpty(connectionString, null, "connection string not set in config. name=" + text);
            }

            return connectionString;
        }

        public string GetAppSettingValue(object settingsItemKey, bool required = true, string defaultValue = null)
        {
            string text = CreateKey(settingsItemKey.ToString());
            string text2 = _configuration[text] ?? defaultValue;
            if (required && string.IsNullOrWhiteSpace(text2))
            {
                throw new Exception(text + " not set in appSettings section");
            }

            return text2;
        }

        public IConfigurationSection GetSection(string name, bool required = true)
        {
            string appSettingsKey;
            return GetSection(name, required, out appSettingsKey);
        }

        public IConfigurationSection GetSection(string name, bool required, out string appSettingsKey)
        {
            appSettingsKey = CreateKey(name.ToString());
            if (required)
            {
                return _configuration.GetRequiredSection(appSettingsKey);
            }

            return _configuration.GetSection(appSettingsKey);
        }

        public TEntity Get<TEntity>(string name)
        {
            string key = CreateKey(name.ToString());
            return _configuration.GetSection(key).Get<TEntity>();
        }
    }
}