package de.gedoplan.seminar.jpa.exercise.rest;

import java.util.List;
import java.util.Optional;

import org.slf4j.Logger;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
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.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.server.ResponseStatusException;

import de.gedoplan.seminar.jpa.exercise.domain.Highway;
import de.gedoplan.seminar.jpa.exercise.repository.HighwayRepository;

@RestController
@RequestMapping(path = "/highways", produces = MediaType.APPLICATION_JSON_VALUE)
public class HighwayResource {


  private final HighwayRepository highwayRepository;
  private final Logger logger;

  public HighwayResource(HighwayRepository highwayRepository, Logger logger) {
	super();
	this.highwayRepository = highwayRepository;
	this.logger = logger;
}

/**
   * Exercise JPA_BASICS_01: Insert test data.
   */
  @PostMapping(consumes = MediaType.APPLICATION_JSON_VALUE)
  public void insert(@RequestBody Highway highway) {
    this.logger.debug("----- insert -----");
    
    this.highwayRepository.save(highway);

    this.logger.debug("Inserted: " + highway);
  }

  /**
   * Exercise JPA_BASICS_01: Find entries by id.
   */
  @GetMapping("/{ID}")
  public Highway findById(@PathVariable("ID") Integer id) {
    this.logger.debug("----- findById -----");
    Optional<Highway> highway = this.highwayRepository.findById(id);
    highway.ifPresent(h -> this.logger.debug(id+": "+h));
    return highway.orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND));
    
  }

  /**
   * Exercise JPA_BASICS_03: Find entries by origin.
   */
  @GetMapping("/findByOrigin/{origin}")
  public List<Highway> findByOrigin(@PathVariable("origin") String origin) {
    this.logger.debug("----- findByOrigin -----");

    List<Highway> highways = this.highwayRepository.findByOrigin(origin);
    this.logger.debug(origin+": "+highways);
    return highways;
  }
  
  @GetMapping("/countOrigins")
  public Long findByOrigin() {
    this.logger.debug("----- countOrigins -----");

    Long count = this.highwayRepository.countOrigins();
    this.logger.debug("Count distinct Origins: "+count);
    return count;
  }

}