package rest.entities;

import java.util.List;
import java.util.UUID;
import java.util.stream.Collectors;

import javax.transaction.Transactional;

import org.apache.commons.lang3.SerializationUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.util.MultiValueMap;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
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 org.springframework.web.bind.annotation.RestController;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;

import dao.entities.DMPDao;
import dao.entities.DMPProfileDao;
import dao.entities.DataRepositoryDao;
import dao.entities.DatasetDao;
import dao.entities.DatasetProfileDao;
import dao.entities.DatasetProfileRulesetDao;
import dao.entities.DatasetProfileViewstyleDao;
import dao.entities.OrganisationDao;
import dao.entities.ProjectDao;
import dao.entities.RegistryDao;
import dao.entities.ResearcherDao;
import dao.entities.ServiceDao;
import entities.DMP;
import entities.DMPProfile;
import entities.DataRepository;
import entities.Dataset;
import entities.DatasetProfile;
import entities.DatasetProfileRuleset;
import entities.Organisation;
import entities.Project;
import entities.Registry;
import entities.Researcher;
import entities.Service;
import entities.responses.IDLabelPair;
import helpers.Transformers;
import responses.RestResponse;


@RestController
@CrossOrigin
public class Projects  {
	
	@Autowired private DataRepositoryDao dataRepositoryDao;
	@Autowired private DatasetDao datasetDao;
	@Autowired private DatasetProfileDao datasetProfileDao;
	@Autowired private DatasetProfileRulesetDao datasetProfileRulesetDao;
	@Autowired private DatasetProfileViewstyleDao datasetProfileViewstyleDao;
	@Autowired private DMPDao dMPDao;
	@Autowired private DMPProfileDao dMPProfileDao;
	@Autowired private OrganisationDao organisationDao;
	@Autowired private ProjectDao projectDao;
	@Autowired private RegistryDao registryDao;
	@Autowired private ResearcherDao researcherDao;
	@Autowired private ServiceDao serviceDao;
	

	private ObjectMapper objectMapper = new ObjectMapper();

	// MANAGE PROJECT(S)
	
	@RequestMapping(method = RequestMethod.GET, value = { "/projects" })
	public @ResponseBody ResponseEntity<Object> listProjects(){
		try {
			List<UUID> allIDs = projectDao.listAllIDs();
			return ResponseEntity.status(HttpStatus.OK).body(new ObjectMapper().writeValueAsString(allIDs));
		}
		catch(Exception ex) {
			return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body("Serialization issue: "+ex.getMessage());
		}
	}
	
	@RequestMapping(method = RequestMethod.GET, value = { "/projects/{id}" })
	public @ResponseBody ResponseEntity<Object> getProject(@PathVariable("id") String id) {
		try {
			Project project = projectDao.read(UUID.fromString(id));
			return ResponseEntity.status(HttpStatus.OK).body(new ObjectMapper().writeValueAsString(project));
		}
		catch(Exception ex) {
			return ResponseEntity.status(HttpStatus.BAD_REQUEST).body("Erroneous input: "+ex.getMessage());
		}
	}
	
	
	@RequestMapping(method = RequestMethod.GET, value = { "/project/listAllLabelIDs" })
	public @ResponseBody ResponseEntity<Object> listLabelIds(){
		try {
			List<IDLabelPair> allIDs = projectDao.listAllIDsLabels();
			return ResponseEntity.status(HttpStatus.OK).body(new ObjectMapper().writeValueAsString(allIDs));
		}
		catch(Exception ex) {
			return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body("Serialization issue: "+ex.getMessage());
		}
	}
	
	
	@RequestMapping(method = RequestMethod.GET, value = { "/project/getAll" }, produces="application/json")
	public @ResponseBody ResponseEntity<Object> getAllProjects(){
		try {
			List<Project> allProjects = projectDao.getAll();
			
			//sorry for that, spring-jersey serialisation has issues when performed on tables, so -> custom 
			List<String> projectStrL = allProjects.parallelStream().map((projectObj) -> {
				try {
					return objectMapper.writeValueAsString(projectObj);
				} catch (JsonProcessingException e) {
					return "";
				}
			}).collect(Collectors.toList());
			
			return new ResponseEntity<Object>("["+String.join(",", projectStrL)+"]", HttpStatus.OK);
			
		}
		catch(Exception ex) {
			return new ResponseEntity<>(null, HttpStatus.INTERNAL_SERVER_ERROR);
		}
	}
	
	
	
	@Transactional
	@RequestMapping(method = RequestMethod.POST, value = { "/project/create" }, consumes = "application/json", produces="application/json")
	public @ResponseBody ResponseEntity<Object> setProject(@RequestBody Project project) {
		Project createdProject = projectDao.update(project);
		try {
			return ResponseEntity.status(HttpStatus.CREATED).body(objectMapper.writeValueAsString(createdProject));
		} catch (JsonProcessingException e) {
			return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body("{\"msg\":\"Could not create Project!\"}");
		}	
	}
	
	
	@RequestMapping(method = RequestMethod.POST, value = { "/project/delete" }, consumes = "application/json", produces="text/plain")
	public @ResponseBody ResponseEntity<Object> delete(@RequestBody Project project) {
		
		Project p = new Project();
		p.setId(project.getId());
		try {
			projectDao.delete(p);
			return ResponseEntity.status(HttpStatus.CREATED).body("{\"msg\":\"Deleted Project entity!\"}");
		} catch (Exception e) {
			return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body("{\"msg\":\"Could not Delete Project!\"}");
		}
		
	}
	

	
}