package ciai.controller;

import java.util.Collection;
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.EditionNotFoundException;
import ciai.exception.StudentNotEditedException;
import ciai.exception.StudentNotFoundException;
import ciai.model.Edition;
import ciai.model.Professor;
import ciai.model.Result;
import ciai.model.Student;
import ciai.model.StudentEditionDetails;
import ciai.model.StudentEvaluation;
import ciai.repository.StudentEvaluationRepository;
import ciai.service.AppService;
import ciai.view.Views;
import tools.Response;

@Controller
@RequestMapping(value = "/student")
public class StudentController {

	@Autowired
	AppService service;
	@Autowired
	StudentEvaluationRepository studentEvalRep;

	/**
	 * Detalhes de um estudante
	 */
	@RequestMapping(value = "/view/{number}", method = RequestMethod.GET)
	@PreAuthorize("hasRole('STUDENT') and @securityService.isStudentPage(#number)")
	@JsonView(Views.StudentView.class)
	public @ResponseBody ResponseEntity<?> getStudent(@PathVariable int number) {

		Student s;

		try {
			s = service.getStudentByNumber(number);
		} catch (StudentNotFoundException e) {
			return new ResponseEntity<String>(HttpStatus.NOT_FOUND);
		}

		return new ResponseEntity<Student>(s, HttpStatus.OK);
	}

	/**
	 * Lista de edições concluidas e a nota respetiva (resultados)
	 */
	@RequestMapping(value = "/view/{number}/results", method = RequestMethod.GET)
	@PreAuthorize("hasRole('STUDENT') and @securityService.isStudentPage(#number)")
	@JsonView(Views.StudentView.class)
	public @ResponseBody Collection<Result> getStudentResults(@PathVariable int number) {
		return service.getStudentResults(number);
	}
	

	/**
	 * Lista de edições atuais de um estudante
	 */
	@RequestMapping(value = "/view/{number}/editions", method = RequestMethod.GET)
	@JsonView(Views.StudentView.class)
	public @ResponseBody Set<Edition> getStudentEditions(@PathVariable int number) {
		return service.getStudentCurrentEditions(number);
	}

	/**
	 * Detalhes de uma edição concluida de um estudante (professores e notas de
	 * cada avaliação)
	 */
	@RequestMapping(value = "/view/{number}/finished/edition/{eid}", method = RequestMethod.GET)
	@JsonView(Views.StudentView.class)
	public @ResponseBody ResponseEntity<?> getStudentFinishedEditionDetails(@PathVariable int number, @PathVariable Long eid) {

		StudentEditionDetails sed = new StudentEditionDetails();

		try {
			Edition edition = service.getEdition(eid);
			Student student = service.getStudentByNumber(number);
			Set<Professor> professors = service.getEditionProfessors(edition.getId());
			Set<StudentEvaluation> studentEvals = studentEvalRep.sarchByStudentFinished(student.getId(),edition.getId());

			sed.setEvaluations(studentEvals);
			sed.setProfessors(professors);

		} catch (EditionNotFoundException e) {
			System.out.println("edition not found");
			return new ResponseEntity<String>(HttpStatus.NOT_FOUND);
		} catch (StudentNotFoundException e) {
			System.out.println("student not found");
			return new ResponseEntity<String>(HttpStatus.NOT_FOUND);
		} catch (Exception e) {
			e.printStackTrace();
			return new ResponseEntity<String>(HttpStatus.INTERNAL_SERVER_ERROR);
		}
		return new ResponseEntity<StudentEditionDetails>(sed,HttpStatus.OK);
	}
	
	/**
	 * Detalhes de uma edição currente de um estudante (professores e notas de
	 * cada avaliação)
	 */
	@RequestMapping(value = "/view/{number}/all/edition/{eid}", method = RequestMethod.GET)
	@JsonView(Views.StudentView.class)
	public @ResponseBody ResponseEntity<?> getStudentCurrentEditionDetails(@PathVariable int number, @PathVariable Long eid) {

		StudentEditionDetails sed = new StudentEditionDetails();

		try {
			Edition edition = service.getEdition(eid);
			Student student = service.getStudentByNumber(number);
			Set<Professor> professors = service.getEditionProfessors(edition.getId());
			Set<StudentEvaluation> studentEvals = studentEvalRep.sarchByStudentAll(student.getId(),edition.getId());

			sed.setEvaluations(studentEvals);
			sed.setProfessors(professors);

		} catch (EditionNotFoundException e) {
			System.out.println("edition not found");
			return new ResponseEntity<String>(HttpStatus.NOT_FOUND);
		} catch (StudentNotFoundException e) {
			System.out.println("student not found");
			return new ResponseEntity<String>(HttpStatus.NOT_FOUND);
		} catch (Exception e) {
			e.printStackTrace();
			return new ResponseEntity<String>(HttpStatus.INTERNAL_SERVER_ERROR);
		}
		return new ResponseEntity<StudentEditionDetails>(sed,HttpStatus.OK);
	}
	
	

	/**
	 * Editar os detalhes de um estudante
	 */
	@RequestMapping(value = "/edit/{number}", method = RequestMethod.POST)
	@PreAuthorize("hasRole('STUDENT') and @securityService.isStudentPage(#number)")
	public @ResponseBody ResponseEntity<Response> editStudent(@PathVariable int number,
			@RequestParam Map<String, String> requestParams) {
		String name = requestParams.get("name");
		String photo = requestParams.get("photo");
		String personalemail = requestParams.get("email");
		String address = requestParams.get("address");
		String birthday = requestParams.get("birthday");

		try {
			service.editStudent(number, name, photo, personalemail, address, birthday);
		} catch (StudentNotEditedException e) {
			return new ResponseEntity<Response>(new Response("Error editing the student profile"),HttpStatus.INTERNAL_SERVER_ERROR);
		} catch (StudentNotFoundException e) {
			return new ResponseEntity<Response>(new Response("Student not found"),HttpStatus.NOT_FOUND);
		}

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

}