package eu.dnetlib.uoaadmintools.controllers;

import eu.dnetlib.uoaadmintools.dao.CommunityDAO;
import eu.dnetlib.uoaadmintools.dao.DivIdDAO;
import eu.dnetlib.uoaadmintools.entities.*;
import eu.dnetlib.uoaadmintools.dao.PageDAO;

import org.apache.log4j.Logger;
import org.springframework.web.bind.annotation.*;
import org.springframework.beans.factory.annotation.Autowired;

import java.util.*;

@RestController
@CrossOrigin(origins = "*")
public class PageController {
    private final Logger log = Logger.getLogger(this.getClass());

    @Autowired
    private PageDAO pageDAO;

    @Autowired
    private CommunityDAO communityDAO;

    @Autowired
    private DivIdDAO divIdDAO;

    @Autowired
    private PageHelpContentController pageHelpContentController;

    @Autowired
    private DivHelpContentController divHelpContentController;

    @Autowired
    private DivIdController divIdController;

    @RequestMapping(value = "/page", method = RequestMethod.GET)
    public List<Page> getAllPages(@RequestParam(required=false) String pid) {
        List<Page> pages;
        if(pid !=null){
            pages = (pid=="openaire")? pageDAO.findByOpenaire(true):pageDAO.findByConnect(true);
        }
        else{
            pages = pageDAO.findAll();
        }
        pages.sort(Comparator.comparing(Page::getName));
        return pages;
    }

    @RequestMapping(value = "/page", method = RequestMethod.DELETE)
    public void deleteAllPages() {
        pageDAO.deleteAll();
    }

    @RequestMapping(value = "/page/update", method = RequestMethod.POST)
    public CommunityPage updatePage(@RequestBody CommunityPage communityPage) {
        Page page = this.getPageByCommunityPage(communityPage);
        pageDAO.save(page);
        return communityPage;
    }

    @RequestMapping(value = "/page/save", method = RequestMethod.POST)
    public CommunityPage insertPage(@RequestBody CommunityPage communityPage) {
        Page page = this.getPageByCommunityPage(communityPage);
        Page savedPage = pageDAO.save(page);
        communityPage.setId(savedPage.getId());

        // add page in communities
        List<Community> communities = communityDAO.findAll();
        for( Community community : communities ) {
            Map<String, Boolean> pages = community.getPages();
            pages.put(page.getId(), true);
            community.setPages(pages);
            communityDAO.save(community);
        }

        return communityPage;
    }

    private Page getPageByCommunityPage(CommunityPage communityPage) {
        Page page = new Page();
        page.setId(communityPage.getId());
        page.setRoute(communityPage.getRoute());
        page.setName(communityPage.getName());
        page.setType(communityPage.getType());
        page.setConnect(communityPage.getConnect());
        page.setOpenaire(communityPage.getOpenaire());

        List<Entity> fullEntities = communityPage.getEntities();
        List<String> entities = new ArrayList<String>();
        for(Entity entity : fullEntities) {
            entities.add(entity.getId());
        }
        page.setEntities(entities);

        return page;
    }

    @RequestMapping(value = "/page/delete", method = RequestMethod.POST)
    public Boolean deletePages(@RequestBody List<String> pages) throws Exception {
        for (String id: pages) {
            pageDAO.delete(id);

            // delete divIds related only to this page from all communities, otherwise remove this page from divIds
            List<DivId> divIds = divIdController.getDivIds(id, null);
            for(DivId divId : divIds) {
                if(divId.getPages().size() == 1) {
                    divIdController.deleteDivId(divId.getId());

                    // delete div contents related to this page from all communities
                    List<DivHelpContentResponse> divHelpContentResponses = divHelpContentController.getDivHelpContents(null, id, divId.getId(), null);
                    for (DivHelpContentResponse divHelpContentResponse : divHelpContentResponses) {
                        divHelpContentController.deleteDivHelpContent(divHelpContentResponse.getId());
                    }
                } else {
                    List<String> divIdPages = divId.getPages();
                    divIdPages.remove(id);
                    divId.setPages(divIdPages);
                    divIdDAO.save(divId);
                }
            }


            // delete page contents related to this page from all communities
            List<PageHelpContentResponse> pageHelpContentResponses = pageHelpContentController.getPageHelpContents(null, id, null, null, null);
            for(PageHelpContentResponse pageHelpContentResponse : pageHelpContentResponses) {
                pageHelpContentController.deletePageHelpContent(pageHelpContentResponse.getId());
            }

            // delete page from communities
            List<Community> communities = communityDAO.findAll();
            for( Community community : communities ) {
                Map<String, Boolean> communityPages = community.getPages();
                communityPages.remove(id);
                community.setPages(communityPages);
                communityDAO.save(community);
            }
        }

        return true;
    }

    @RequestMapping(value = "/page/{id}", method = RequestMethod.GET)
    public Page getPage(@PathVariable(value = "id") String id) {
        return pageDAO.findById(id);
    }

    @RequestMapping(value = "/page/{id}", method = RequestMethod.DELETE)
    public void deletePage(@PathVariable(value = "id") String id) {
        pageDAO.delete(id);
    }

    @RequestMapping(value = "/page/{id}/entity", method = RequestMethod.GET)
    public List<String> getPageEntities(@PathVariable(value = "id") String id) {
        return pageDAO.findById(id).getEntities();
    }

    @RequestMapping(value = "page/{id}/entity/toggle", method = RequestMethod.POST)
    public Page togglePageEntity(@PathVariable(value = "id") String id, @RequestParam String entityId, @RequestParam String status) throws Exception {
        log.debug("Toggle entity : "+entityId +" of page: "+id+" to "+status);
        Page page = pageDAO.findById(id);
        List<String> entities = page.getEntities();
        if(Boolean.parseBoolean(status) && !entities.contains(entityId)) {
            entities.add(entityId);
        } else if (!Boolean.parseBoolean(status)) {
            entities.remove(entityId);
        }
        page.setEntities(entities);
        return pageDAO.save(page);
    }
}