package eu.eudat.controllers;

import java.util.List;
import java.util.Map;
import java.util.UUID;

import eu.eudat.entities.Registry;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
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 eu.eudat.dao.entities.DMPDao;
import eu.eudat.dao.entities.DMPProfileDao;
import eu.eudat.dao.entities.DataRepositoryDao;
import eu.eudat.dao.entities.DatasetDao;
import eu.eudat.dao.entities.DatasetProfileDao;
import eu.eudat.dao.entities.DatasetProfileRulesetDao;
import eu.eudat.dao.entities.DatasetProfileViewstyleDao;
import eu.eudat.dao.entities.OrganisationDao;
import eu.eudat.dao.entities.ProjectDao;
import eu.eudat.dao.entities.RegistryDao;
import eu.eudat.dao.entities.ResearcherDao;
import eu.eudat.dao.entities.ServiceDao;
import eu.eudat.entities.responses.IDLabelPair;
import eu.eudat.proxy.config.exceptions.HugeResultSet;
import eu.eudat.proxy.config.exceptions.NoURLFound;
import eu.eudat.proxy.fetching.RemoteFetcher;

import javax.transaction.Transactional;


@RestController
@CrossOrigin
public class Registries  {
	
	@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;
	
	@Autowired private RemoteFetcher remoteFetcher;
	
	
	@RequestMapping(method = RequestMethod.GET, value = { "/external/registries" }, produces="application/json")
	public @ResponseBody ResponseEntity<List<Map<String,String>>> listExternalRegistries(@RequestParam(value="query", required=false) String query ){
		try {
			List<Map<String,String>> remoteRepos = remoteFetcher.getRegistries(query);
			return ResponseEntity.status(HttpStatus.OK).body(remoteRepos);
		}
		catch(NoURLFound ex) {
			return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(null);
		}
		catch(HugeResultSet ex) {
			return ResponseEntity.status(HttpStatus.UNPROCESSABLE_ENTITY).body(null); //the ex.getMessage has the appropriate text description
		}
	}
	

	// MANAGE REGISTRY(IES)

	@RequestMapping(method = RequestMethod.GET, value = { "/registries" })
	public @ResponseBody ResponseEntity<List<UUID>> listRegistries(){
		try {
			List<UUID> allIDs = registryDao.listAllIDs();
			return ResponseEntity.status(HttpStatus.OK).body(allIDs);
		}
		catch(Exception ex) {
			return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(null);
		}
	}
	
	
	@RequestMapping(method = RequestMethod.GET, value = { "/registries/{id}" })
	public @ResponseBody ResponseEntity<Registry> getRegistries(@PathVariable("id") String id) {
		try {
			Registry registry = registryDao.read(UUID.fromString(id));
			return ResponseEntity.status(HttpStatus.OK).body(registry);
		}
		catch(Exception ex) {
			return ResponseEntity.status(HttpStatus.BAD_REQUEST).body(null);
		}
	}


	
	@RequestMapping(method = RequestMethod.GET, value = { "/registries/listAllLabelIDs" })
	public @ResponseBody ResponseEntity<List<IDLabelPair>> listLabelIds(){
		try {
			List<IDLabelPair> allIDs = registryDao.listAllIDsLabels();
			return ResponseEntity.status(HttpStatus.OK).body(allIDs);
		}
		catch(Exception ex) {
			return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(null);
		}
	}
	
	
	@RequestMapping(method = RequestMethod.GET, value = { "/registry/getAll" }, produces="application/json")
	public @ResponseBody ResponseEntity<Object> getAllRegistries(){
		try {
			List<Registry> allRegistries = registryDao.getAll();
			
			return ResponseEntity.status(HttpStatus.OK).body(allRegistries);
			
		}
		catch(Exception ex) {
			return new ResponseEntity<>(null, HttpStatus.INTERNAL_SERVER_ERROR);
		}
	}
	
	
	@Transactional
	@RequestMapping(method = RequestMethod.POST, value = { "/registry/create" }, consumes = "application/json", produces="application/json")
	public @ResponseBody ResponseEntity<Registry> setRegistry(@RequestBody Registry registry) {
		Registry createdRegistry = registryDao.update(registry);
		try {
			return ResponseEntity.status(HttpStatus.CREATED).body(createdRegistry);
		} catch (Exception e) {
			return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(null);
		}	
	}
	
	
	@RequestMapping(method = RequestMethod.POST, value = { "/registry/delete" }, consumes = "application/json", produces="text/plain")
	public @ResponseBody ResponseEntity<Object> delete(@RequestBody Registry registry) {
		
		Registry r = new Registry();
		r.setId(registry.getId());
		try {
			registryDao.delete(r);
			return ResponseEntity.status(HttpStatus.CREATED).body("{\"msg\":\"Deleted registry!\"}");
		} catch (Exception e) {
			return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body("{\"msg\":\"Could not Delete registry!\"}");
		}
		
	}
	
	
	

	
}