package nl.veenm.paypoint.service;

import jakarta.enterprise.context.ApplicationScoped;
import jakarta.inject.Inject;
import jakarta.transaction.Transactional;
import jakarta.ws.rs.core.Response;
import nl.veenm.paypoint.domain.InviteEntity;
import nl.veenm.paypoint.domain.InviteRequest;
import nl.veenm.paypoint.repository.InviteRepository;

import java.security.SecureRandom;
import java.time.Instant;
import java.time.temporal.ChronoUnit;
import java.util.Base64;

@ApplicationScoped
public class AgendaService {

    @Inject
    EmailService emailService;

    @Inject
    InviteRepository inviteRepository;

    public void sendInvite(String email, String url) {
        this.emailService.stuurUitnodiging(email, url);
    }

    @Transactional
    public InviteEntity createInvite(InviteRequest inviteRequest) {
        String token = generateSecureToken(); // zoals eerder besproken
        InviteEntity invite = new InviteEntity();

        invite.setCompany_id(inviteRequest.companyId);
        invite.setEmail(inviteRequest.email);
        invite.setToken(token);
        invite.setUsed(false);
        invite.setCreatedAt(Instant.now());
        invite.setExpiresAt(Instant.now().plus(1, ChronoUnit.HOURS)); // 1u geldig

        inviteRepository.persist(invite);

        return invite;
    }

    public String generateSecureToken() {
        byte[] randomBytes = new byte[24];
        new SecureRandom().nextBytes(randomBytes);
        return Base64.getUrlEncoder().withoutPadding().encodeToString(randomBytes);
    }

    public Response verifyInvite(String token) {
        InviteEntity invite = inviteRepository.findByToken(token);

        if (invite == null || invite.isUsed()) {
            return Response.status(Response.Status.BAD_REQUEST).entity("Ongeldige of reeds gebruikte uitnodiging").build();
        }

        if (invite.getExpiresAt().isBefore(Instant.now())) {
            return Response.status(Response.Status.GONE).entity("Deze uitnodiging is verlopen").build();
        }

        return Response.ok(invite).build();
    }
}