using MessengerApi.Configuration.Model.Persistence;
using MessengerApi.Configuration.Model.Persistence.Base;
using MessengerApi.Configuration.Sources.Environment;

namespace MessengerApi.Configuration.Parsers
{
    public static class EnvironmentPersistenceConfigurationParser
    {
        public static PersistenceConfiguration Parse(IEnvironmentConfigurationSource config)
        {
            var type = PersistenceTypeParser.Parse(config.GetValue<string>(Constants.EnvironmentVariables.PERSISTENCE_TYPE));
            
            if(type == Enums.PersistenceTypes.Sql)
            {
                return new SqlPersistenceConfiguration(config);
            }
            else if(type == Enums.PersistenceTypes.PostgreSql)
            {
                return new NpgPersistenceConfiguration(config);
            }

            throw new InvalidOperationException("Unrecognized persistence type.");
        }
    }
}