package org.iri_research.renkan.controller;

import java.util.HashMap;

import java.util.Map;

import org.iri_research.renkan.Constants;

import org.iri_research.renkan.Constants.EditMode;

import org.iri_research.renkan.RenkanException;

import org.iri_research.renkan.models.Project;

import org.iri_research.renkan.repositories.ProjectsRepository;

import org.iri_research.renkan.repositories.SpacesRepository;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.http.HttpStatus;

import org.springframework.stereotype.Controller;

import org.springframework.ui.Model;

import org.springframework.web.HttpMediaTypeNotSupportedException;

import org.springframework.web.bind.annotation.PathVariable;

import org.springframework.web.bind.annotation.RequestHeader;

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.client.HttpClientErrorException;

import org.springframework.web.client.HttpServerErrorException;

import org.springframework.web.servlet.ModelAndView;

@Controller

@RequestMapping("/p")

public class RenkanController {

	private final Logger logger = LoggerFactory.getLogger(RenkanController.class);

	@Autowired

	private ProjectsRepository projectsRepository;

	@Autowired

	private SpacesRepository spacesRepository;

	private void checkCowebkey(String cowebkey, Project project, Constants.EditMode editMode) {

		if(cowebkey == null || cowebkey.isEmpty()) {

			throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Cowebkey missing");

		}

		try {

			if(!project.checkKey(cowebkey, editMode)) {

				throw new HttpClientErrorException(HttpStatus.BAD_REQUEST, "Bad cowebkey");

			}

		} catch (RenkanException e) {

			throw new HttpServerErrorException(HttpStatus.INTERNAL_SERVER_ERROR, e.getMessage());

		}

	}

	@RequestMapping(value="/{project_id}", method = RequestMethod.GET, produces={"text/html;charset=UTF-8", "!image/*"})

	public ModelAndView renkanProject(

			@PathVariable(value="project_id") String project_id,

			@RequestHeader(value="Accept") String accept_header,

			@RequestParam(value="cowebkey") String cowebkey

			) throws HttpMediaTypeNotSupportedException

	{

		this.logger.debug("renkanProject : " + project_id + " Accept : " + accept_header!=null?accept_header:"" + ", cowebkey: "+ cowebkey!=null?cowebkey:"");

		if(accept_header != null && accept_header.matches(".*image/.*")) {

			throw new HttpMediaTypeNotSupportedException("Do not produce image");

		}

		if(project_id == null || project_id.length() == 0) {

			throw new IllegalArgumentException("RenkanContoller.renkanProject: Project id is null or empty.");

		}

		Project project = this.projectsRepository.findOne(project_id);

		if(project == null) {

			throw new HttpClientErrorException(HttpStatus.NOT_FOUND, "Project " + project_id + " not found.");

		}

		this.checkCowebkey(cowebkey, project, EditMode.EDITION);

		Map<String, Object> model = new HashMap<String, Object>();

		model.put("project", project);

		model.put("space", spacesRepository.findOne(project.getSpaceId()));

		return new ModelAndView("renkanProjectEdit", model);

	}

	@RequestMapping(value="/pub/{project_id}", method = RequestMethod.GET, produces={"text/html;charset=UTF-8", "!image/*"})

	public String renkanPublishProject(

			Model model,

			@PathVariable(value="project_id") String project_id,

			@RequestParam(value="cowebkey") String cowebkey

			)

	{

		if(project_id == null || project_id.length() == 0) {

			throw new IllegalArgumentException("RenkanContoller.renkanProject: Project id is null or empty.");

		}

		Project project = this.projectsRepository.findOne(project_id);

		if(project == null) {

			throw new HttpClientErrorException(HttpStatus.NOT_FOUND, "Project " + project_id + " not found.");

		}

		this.checkCowebkey(cowebkey, project, EditMode.READ_ONLY);

		model.addAttribute("project", project);

		model.addAttribute("space", spacesRepository.findOne(project.getSpaceId()));

		return "renkanProjectPublish";

	}

}