using AutobusApi.Application.Common.Exceptions;
using AutobusApi.Application.Common.Interfaces;
using MediatR;

namespace AutobusApi.Application.Countries.Commands.UpdateCountry;

public class UpdateCountryCommandHandler : IRequestHandler<UpdateCountryCommand>
{
    private readonly IApplicationDbContext _dbContext;

    public UpdateCountryCommandHandler(IApplicationDbContext dbContext)
    {
        _dbContext = dbContext;
    }

    public async Task Handle(
        UpdateCountryCommand request,
        CancellationToken cancellationToken)
    {
        var country = await _dbContext.Countries
            .FindAsync(new object[] { request.Id }, cancellationToken);

        if (country == null)
        {
            throw new NotFoundException();
        }

        country.Name = request.Name;

        await _dbContext.SaveChangesAsync(cancellationToken);
    }
}