package hu.unr.fiber.cardapi;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Optional;
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import java.util.Random;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.http.HttpHeaders;
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import org.springframework.http.HttpStatus;
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import org.springframework.http.ResponseEntity;
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import org.springframework.web.bind.annotation.*;
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import org.springframework.web.util.UriComponentsBuilder;
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@RestController
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public class CardController {
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Logger logger = LoggerFactory.getLogger(CardController.class);
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protected List<Card> cardList = new ArrayList<>();
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public CardController() {
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cardList.add(new Card(1, "Első kártya", "1"));
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cardList.add(new Card(2, "Második kártya", "2"));
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cardList.add(new Card(5, "Harmadik kártya", "4"));
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cardList.add(new Card(8, "Tízezer egyszázadik kártya", "10100"));
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}
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@GetMapping("/")
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public String index() {
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logger.info("/index called.");
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return "Hello world! Hateoas helyett: (/cards GET /card/{id} POST /card/{id} PUT /card/{id} DELETE /card/{id} )";
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}
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@GetMapping("/cards")
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public List<Card> cards() {
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logger.info("/cards called, responded with " + cardList.size() + " items.");
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return cardList;
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}
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@GetMapping(value = "/card/{id}")
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public ResponseEntity<Card> getUser(@PathVariable("id") long id) {
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logger.info("/card/" + id + " called");
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return Optional
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.ofNullable(this.getCardByID(id))
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.map(card -> ResponseEntity.ok().body(card)) //200 OK
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.orElseGet(() -> ResponseEntity.notFound().build()); //404 Not found
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}
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private Card getCardByID(long id) {
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for (Card card : cardList) {
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if (card.getId() == id) {
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return card;
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}
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}
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return null;
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}
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private Card getCardByNumber(String number) {
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for (Card card : cardList) {
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if (card.getNumber().equals(number)) {
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return card;
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}
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}
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return null;
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}
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@PostMapping(value = "/card")
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public ResponseEntity<String> createCard(@RequestBody Card card, UriComponentsBuilder ucBuilder) {
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logger.info("Creating Card : {}", card);
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if (this.getCardByNumber(card.getNumber()) != null) {
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logger.error("Unable to create. A Card with number {} already exist", card.getNumber());
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return ResponseEntity.status(HttpStatus.CONFLICT).build();
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}
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long nextId = new Random().nextLong();
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while (this.getCardByID(nextId) != null) {
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nextId = new Random().nextLong();
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}
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card.setId(nextId);
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cardList.add(card);
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HttpHeaders headers = new HttpHeaders();
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headers.setLocation(ucBuilder.path("/card/{id}").buildAndExpand(card.getId()).toUri());
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return new ResponseEntity<String>(headers, HttpStatus.CREATED);
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}
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}
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