package com.example.medweb.service.impl;


import com.example.medweb.model.Pacient;
import com.example.medweb.model.exceptions.InvalidArgumentsException;
import com.example.medweb.model.exceptions.InvalidUserCredentialsException;
import com.example.medweb.repository.PacientRepository;
import com.example.medweb.service.PacientService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Optional;
import java.util.Random;

@Service
public class PacientServiceImpl implements PacientService {


    private final PacientRepository pacientRepository;

    public PacientServiceImpl(PacientRepository pacientRepository) {

        this.pacientRepository = pacientRepository;
    }

    @Override
    public List<Pacient> listAll() {
        return this.pacientRepository.findAll();
    }

    @Override
    public Optional<Pacient> findById(Integer id){
        return this.pacientRepository.findById(id);
    }

    @Override
    public Optional<Pacient> findPacientByEmailAndPass(String email, String password) {
        return this.pacientRepository.findPacientByEmailAndPass(email, password);
    }

    @Override
    public Optional<Pacient> findPacientByEmail(String email) {
        return this.pacientRepository.findPacientByEmail(email);
    }

    @Override
    public void save(Pacient pacient){
        BCryptPasswordEncoder encoder = new BCryptPasswordEncoder();
        String plainPass = pacient.getPass();
        String cypherPass = encoder.encode(plainPass);
        pacient.setPass(cypherPass);
        Random random = new Random();
        Integer pacient_id = random.nextInt();
        pacient.setPacient_id(pacient_id);
        this.pacientRepository.save(pacient);
    }

    @Override
    public Pacient login(String email, String pass) {
        if (email == null || email.isEmpty() || pass == null || pass.isEmpty()) {
            throw new InvalidArgumentsException();
        }
        Pacient pacient = this.pacientRepository.findPacientByEmail(email).get();
        BCryptPasswordEncoder encoder = new BCryptPasswordEncoder();
        if (encoder.matches(pass, pacient.getPass())) {
            pass = pacient.getPass();
        }
        return pacientRepository.findPacientByEmailAndPass(email, pass)
                .orElseThrow(InvalidUserCredentialsException::new);
    }

}