package ciai.controller;

import java.util.Map;
import java.util.Set;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;

import com.fasterxml.jackson.annotation.JsonView;

import ciai.exception.ProfessorNotEditedException;
import ciai.exception.ProfessorNotFoundException;
import ciai.model.Edition;
import ciai.model.Professor;
import ciai.service.AppService;
import ciai.view.Views;
import tools.Response;

@Controller
@RequestMapping(value = "/professor")
public class ProfessorController {

	@Autowired
	AppService service;

	/**
	 * Detalhes de um professor
	 */
	@RequestMapping(value = "/view/{id}", method = RequestMethod.GET)
	@PreAuthorize("(hasRole('ASSISTANT') or hasRole('PROFESSOR')) and @securityService.isProfessorPage(#id)")
	@JsonView(Views.ProfessorView.class)
	public @ResponseBody ResponseEntity<?> getStudent(@PathVariable Long id) {

		Professor p;

		try {
			p = service.getProfessor(id);
		} catch (ProfessorNotFoundException e) {
			return new ResponseEntity<String>(HttpStatus.NOT_FOUND);
		}

		return new ResponseEntity<Professor>(p, HttpStatus.OK);
	}

	/**
	 * Edições em que o professor dá aulas
	 */
	@RequestMapping(value = "/view/{id}/editions", method = RequestMethod.GET)
	@PreAuthorize("(hasRole('ASSISTANT') or hasRole('PROFESSOR')) and @securityService.isProfessorPage(#id)")
	@JsonView(Views.ProfessorView.class)
	public @ResponseBody Set<Edition> getAllProfessorEditions(@PathVariable Long id) {
		return service.getProfessorCurrentEditions(id);
	}

	/**
	 * Editar detalhes de um professor
	 */
	@RequestMapping(value = "/edit/{id}", method = RequestMethod.POST)
	@PreAuthorize("(hasRole('ASSISTANT') or hasRole('PROFESSOR')) and @securityService.isProfessorPage(#id)")
	public @ResponseBody ResponseEntity<Response> editProfessor(@PathVariable Long id,
			@RequestParam Map<String, String> requestParams) {

		String name = requestParams.get("name");
		String photo = requestParams.get("photo");
		String email = requestParams.get("email");

		try {
			service.editProfessor(id, name, photo, email);
		} catch (ProfessorNotFoundException e) {
			return new ResponseEntity<Response>(new Response("Professor profile not found"),HttpStatus.NOT_FOUND);
		} catch (ProfessorNotEditedException e) {
			return new ResponseEntity<Response>(new Response("Error editing the professor profile"),HttpStatus.INTERNAL_SERVER_ERROR);
		}

		return new ResponseEntity<Response>(new Response("Professor profile edited"),HttpStatus.OK);

	}

}