package com.ufund.api.ufundapi.controller;

import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;

import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import com.ufund.api.ufundapi.model.Need;
import com.ufund.api.ufundapi.persistence.CupboardDAO;

@RestController
@RequestMapping("cupboard")
public class CupboardController {
    private static final Logger LOG = Logger.getLogger(CupboardController.class.getName());
    private final CupboardDAO cupboardDAO;

    /**
     * Create a cupboard controller to receive REST signals
     *
     * @param cupboardDAO The Data Access Object
     */
    public CupboardController(CupboardDAO cupboardDAO) {
        this.cupboardDAO = cupboardDAO;
    }

    /**
     * Creates a Need with the provided object
     *
     * @param need The need to create
     * @return OK response and the need if it was successful, INTERNAL_SERVER_ERROR otherwise
     */
    @PostMapping("")
    public ResponseEntity<Need> createNeed(@RequestBody Need need) {
        try {
            if (need.getMaxGoal() <= 0) {
                return new ResponseEntity<>(HttpStatus.BAD_REQUEST);
            }
            cupboardDAO.createNeed(need);
            return new ResponseEntity<>(need, HttpStatus.OK);
        } catch (IOException ex) {
            return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
        }
    }

    /**
     * Responds to the GET request for all {@linkplain Need needs}
     * 
     * @return ResponseEntity with array of {@link Need needs} objects (may be empty)
     *         and
     *         HTTP status of OK<br>
     *         ResponseEntity with HTTP status of INTERNAL_SERVER_ERROR otherwise
     */
    @GetMapping("")
    public ResponseEntity<Need[]> getNeeds() {
        LOG.info("GET /needs");

        try {
            Need[] needs = cupboardDAO.getNeeds();
            return new ResponseEntity<>(needs, HttpStatus.OK);
        } catch (IOException e) {
            LOG.log(Level.SEVERE, e.getLocalizedMessage());
            return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
        }
    }

     /**
     * Responds to the GET request for all {@linkplain Need need} whose name contains
     * the text in name
     * 
     * @param name The name parameter which contains the text used to find the {@link Need need}
     * 
     * @return ResponseEntity with array of {@link Need need} objects (may be empty) and
     * HTTP status of OK<br>
     * ResponseEntity with HTTP status of INTERNAL_SERVER_ERROR otherwise
     * <p>
     */
    @GetMapping("/")
    public ResponseEntity<Need[]> searchNeeds(@RequestParam String name) {
        LOG.info("GET /need/?name="+name);

        try {
            Need[] needArray = cupboardDAO.findNeeds(name);
            return new ResponseEntity<>(needArray, HttpStatus.OK);
        } catch (IOException e) {
            LOG.log(Level.SEVERE,e.getLocalizedMessage());
            return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
        }
    }

    /**
     * Responds to the GET request for a {@linkplain Need need} for the given id
     * 
     * @param id The id used to locate the {@link Need need}
     * 
     * @return ResponseEntity with {@link Need need} object and HTTP status of OK if
     *         found<br>
     *         ResponseEntity with HTTP status of NOT_FOUND if not found<br>
     *         ResponseEntity with HTTP status of INTERNAL_SERVER_ERROR otherwise
     */
    @GetMapping("/{id}")
    public ResponseEntity<Need> getNeed(@PathVariable int id) {
        LOG.log(Level.INFO, "GET /need/{0}", id);

        try {
            Need need = cupboardDAO.getNeed(id);
            if (need != null) {
                return new ResponseEntity<>(need, HttpStatus.OK);
            } else {
                return new ResponseEntity<>(HttpStatus.NOT_FOUND);
            }

        } catch (IOException e) {
            LOG.log(Level.SEVERE, e.getLocalizedMessage());
            return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
        }

    }

    /**
     * Updates a Need with the provided one
     *
     * @param need The need to update
     * @return OK response and the need if it was successful, or INTERNAL_SERVER_ERROR if there was an issue
     */

    @PutMapping("")
    public ResponseEntity<Need> updateNeed(@RequestBody Need need) {
        try {
            need = cupboardDAO.updateNeed(need);
            return new ResponseEntity<>(need, HttpStatus.OK);
        } catch (IOException e) {
            return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
        }
    }

    /**
     * Deletes a single need from the cupboard using the Need's id
     * 
     * @param id The need's ID
     * @return OK if the need was deleted, NOT_FOUND if the need was not found, or INTERNAL_SERVER_ERROR if an error occurred
    */
    @DeleteMapping("/{id}")
    public ResponseEntity<Need> deleteNeed(@PathVariable int id) {
        try {
            if (cupboardDAO.getNeed(id) != null) {
                cupboardDAO.deleteNeed(id);
                return new ResponseEntity<>(HttpStatus.OK);
            } else {
                return new ResponseEntity<>(HttpStatus.NOT_FOUND);
            } 
        } catch (IOException e) {
            return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
        }
    }

}