using System.Net;

namespace BlackRock.Reporting.API.Exceptions
{
    public class ExceptionHandler : IExceptionHandler
    {
        private readonly ILogger<ExceptionHandler> logger;

        public ExceptionHandler(ILogger<ExceptionHandler> logger)
        {
            this.logger = logger;
        }
        public Error HandleException(Exception exception)
        {
            var error = exception switch
            {
                DomainException domainException => HandleDomainException(domainException),
                ResourceNotFoundException resourceNotFoundException => HandleResourceNotFoundException(resourceNotFoundException)
            };

            return error;
        }

        private Error HandleResourceNotFoundException(ResourceNotFoundException resourceNotFoundException)
        {
            logger.LogInformation(resourceNotFoundException, resourceNotFoundException.Message);

            return
                new Error
                {
                    Title = resourceNotFoundException.Message,
                    StatusCode = HttpStatusCode.BadRequest
                };
        }

        private Error HandleDomainException(DomainException domainException)
        {
            logger.LogInformation(domainException, domainException.Message);

            return
                new Error
                {
                    Title = domainException.Message,
                    StatusCode = HttpStatusCode.BadRequest
                };
        }
        private Error HandleUnhandledException(Exception exception)
        {
            logger.LogInformation(exception, exception.Message);

            return
                new Error
                {
                    Title = exception.Message,
                    StatusCode = HttpStatusCode.InternalServerError
                };
        }
    }
}