using Microsoft.Extensions.Options;

using MongoDB.Entities;

using PrivaPub.Models;
using PrivaPub.StaticServices;

namespace PrivaPub.Services
{
	public class AppConfigurationService
	{
		public AppConfiguration AppConfiguration;
		readonly DbEntities _dbEntities;
		AppConfiguration _appConfigurationFromFile;
		public AppConfigurationService(DbEntities dbEntities, IOptionsMonitor<AppConfiguration> appConfiguration)
		{
			_dbEntities = dbEntities;
			_appConfigurationFromFile = appConfiguration.CurrentValue;
		}

		public async Task Init()
		{
			var dbAppConfiguration = await _dbEntities.AppConfiguration.ExecuteFirstAsync();
			if (dbAppConfiguration != default)
			{
				if (AppConfiguration == default || AppConfiguration.LastUpdateDate != dbAppConfiguration.LastUpdateDate)
					AppConfiguration = dbAppConfiguration;
				return;
			}

			dbAppConfiguration = _appConfigurationFromFile;
			await dbAppConfiguration.SaveAsync();
			AppConfiguration = dbAppConfiguration;
		}
	}
}