Kristofer-Beers/server/src/main/java/com/example/beer/BeerController.java

package com.example.beer;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.stream.Collectors;

@RestController
public class BeerController {
    private BeerRepository repository;

    public BeerController(BeerRepository repository) {
        this.repository = repository;
    }

    @GetMapping("/good-beers")
    public Collection<Map<String, String>> goodBeers() {

        return repository.findAll().stream()
                .filter(this::isGreat)
                .map(b -> {
                    Map<String, String> m = new HashMap<>();
                    m.put("id", b.getId().toString());
                    m.put("name", b.getName());
                    return m;
                }).collect(Collectors.toList());
    }

    private boolean isGreat(Beer beer) {
        return !beer.getName().equals("Budweiser") &&
                !beer.getName().equals("Coors Light") &&
                !beer.getName().equals("PBR");
    }
}