package hu.unr.fiber.cardapi;
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import java.net.URI;
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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.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("GET /index called.");
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return "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("GET /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> getCard(@PathVariable("id") long id) {
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logger.info("GET /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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@DeleteMapping(value = "/card/{id}")
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public ResponseEntity<String> deleteCard(@PathVariable("id") long id) {
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logger.info("DELETE /card/" + id + " called");
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return Optional
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.ofNullable(this.getCardByID(id))
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.map(
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card -> {
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this.cardList.remove(card);
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return ResponseEntity.ok().body("OK");
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}
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)
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.orElseGet(() -> ResponseEntity.status(HttpStatus.NOT_FOUND).body("No card available with id: "+ id));
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}
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@PostMapping(value = "/card/{id}")
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public ResponseEntity<String> updateCard(@PathVariable("id") long id, @RequestBody Card updatedCard, UriComponentsBuilder ucBuilder) {
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logger.info("POST /card/"+ id + " called, card update.");
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if (updatedCard.validId() && (updatedCard.getId() != id))
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{
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return ResponseEntity
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.badRequest()
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.body("Id field cannot be modified.");
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}
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Card originalCard = this.getCardByID(id);
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if (originalCard.equals(updatedCard)) {
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return ResponseEntity.accepted().body("Update has no changes.");
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}
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//card number updated, we have to check if its already exists
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if (!originalCard.getNumber().equals(updatedCard.getNumber()) && this.getCardByNumber(updatedCard.getNumber()) != null) {
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logger.error("Unable to update card with id {}. A different Card with number {} already exist", originalCard.getId(), updatedCard.getNumber());
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return ResponseEntity.status(HttpStatus.CONFLICT).body("Card with number " + updatedCard.getNumber() + " already exists.");
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}
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originalCard.update(updatedCard);
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return ResponseEntity.accepted().body("OK");
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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.getNumber());
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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).body("Card with number "+ card.getNumber() + " already exists.");
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}
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long nextId = 1;
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while (this.getCardByID(nextId) != null) {
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nextId++;
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}
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card.setId(nextId);
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cardList.add(card);
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URI newCardURI = ucBuilder.path("/card/{id}").buildAndExpand(card.getId()).toUri();
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return ResponseEntity
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.created(newCardURI)
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.body(newCardURI.toString());
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}
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}
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