package hu.unr.fiber.cardapi;

import java.util.List;

import hu.unr.fiber.cardapi.hibernate.CardNotFoundException;
import hu.unr.fiber.cardapi.interfaces.CardInterface;
import hu.unr.fiber.cardapi.hibernate.CardInteractor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.server.ResponseStatusException;

@RestController
public class CardController {
    Logger logger = LoggerFactory.getLogger(CardController.class);
    private CardInteractor cardService;

    CardController(CardInteractor cS) {
        this.cardService = cS;
    }

    @GetMapping("/")
    public String index() {
        logger.info("GET /index called.");
        return "Hateoas helyett: (/cards GET /card/{id} POST /card/{id} PUT /card/{id} DELETE /card/{id} )";
    }

    @GetMapping("/cards")
    public ResponseEntity<List<CardInterface>> cards() {
        logger.info("GET /cards called, responded with items.");
        List<CardInterface> cardList = cardService.getCardList();
        return ResponseEntity.ok().body(cardList);
    }

    @GetMapping(value = "/card/{id}")
    public ResponseEntity<CardInterface> getCard(@PathVariable("id") long id) {
        logger.info("GET /card/" + id + " called.");

        try {
            CardInterface card = this.cardService.getCardById(id);
            return ResponseEntity.ok().body(card);
        } catch (CardNotFoundException e) {
            throw new ResponseStatusException(HttpStatus.NOT_FOUND, "No such card with id: #" + id);
        }
    }

    @DeleteMapping(value = "/card/{id}")
    public ResponseEntity<String> deleteCard(@PathVariable("id") long id) {
        logger.info("DELETE /card/" + id + " called");

        try {
            this.cardService.delete(id);
        } catch (CardNotFoundException e) {
            throw new ResponseStatusException(HttpStatus.NOT_FOUND, "No such card with id: #" + id, e);
        }

        return ResponseEntity.ok().body("OK");
    }
/*
    @PostMapping(value = "/card/{id}")
    public ResponseEntity<String> updateCard(@PathVariable("id") long id, @RequestBody RestCard updatedCardEntity, UriComponentsBuilder ucBuilder) {

        logger.info("POST /card/" + id + " called, card update.");
        try {
            this.cardService.update(id, updatedCardEntity);
        } catch (CardInvalidUpdateException e){

        }


        RestCard originalCardEntity = this.cardRepository.getOne(id);

        if (originalCardEntity.equals(updatedCardEntity)) {
            return ResponseEntity.accepted().body("Update has no changes.");
        }

        //card number updated, we have to check if its already exists
        if (!originalCardEntity.getNumber().equals(updatedCardEntity.getNumber()) && this.getCardByNumber(updatedCardEntity.getNumber()) != null) {
            logger.error("Unable to update card with id {}. A different RestCard with number {} already exist", originalCardEntity.getId(), updatedCardEntity.getNumber());
            return ResponseEntity.status(HttpStatus.CONFLICT).body("RestCard with number " + updatedCardEntity.getNumber() + " already exists.");
        }

        originalCardEntity.update(updatedCardEntity);
        this.cardRepository.flush();

        return ResponseEntity.accepted().body("OK");
    }

    private RestCard getCardByNumber(String number) {

        Long id = cardRepository.findIdByNumber(number);

        if (id == null) {
            return null;
        }

        return cardRepository.getOne(id);
    }

    @PostMapping(value = "/card")
    public ResponseEntity<String> createCard(@RequestBody RestCard card, UriComponentsBuilder ucBuilder) {
        logger.info("Creating RestCard : {}", card.getNumber());

        if (this.getCardByNumber(card.getNumber()) != null) {
            logger.error("Unable to create. A RestCard with number {} already exist", card.getNumber());
            return ResponseEntity.status(HttpStatus.CONFLICT).body("RestCard with number " + card.getNumber() + " already exists.");
        }

        this.cardRepository.saveAndFlush(card);

        URI newCardURI = ucBuilder.path("/card/{id}").buildAndExpand(card.getId()).toUri();

        return ResponseEntity
                .created(newCardURI)
                .body(newCardURI.toString());
    }
    */
}