package com.wk.cdi.query;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;

import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
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.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.wk.cdi.common.exception.RequestValidationUtil;
import com.wk.cdi.domain.DomainType;
import com.wk.cdi.query.template.Query;


@RestController
@RequestMapping(value="/auth")
public class AuthQueryController {
    private static final Logger log = LoggerFactory.getLogger(AuthQueryController.class);

    private Map<String, Query> queryRouters;
   

    @Autowired
    private RequestValidationUtil requestValidationUtil;

    @Resource(name = "queryRouters")
    public void setQueryRouters(Map<String, Query> queryRouters) {
        this.queryRouters = queryRouters;
    }

   @RequestMapping(value="/route")
   @PreAuthorize("hasRole('ROLE_ADMIN') and #oauth2.hasScope('read') or (!#oauth2.isOAuth() and hasRole('ROLE_ADMIN'))")
    public ResponseEntity<List<? extends Object>> all(HttpServletRequest req) {
        DomainType domainTypeEnum = DomainType.ROUTE;

        try {
            List<? extends Object> resources = new ArrayList<Object>();
            Map<String, String[]> queryParameters = req.getParameterMap();

            if (queryParameters.containsKey("subset_query")) {
                resources = queryRouters.get(domainTypeEnum).subset(queryParameters);
            } else if (queryParameters.size() == 0) {
                resources = queryRouters.get(domainTypeEnum).all();
            } else if (queryParameters.size() == 1 && StringUtils.equalsIgnoreCase(queryParameters.keySet().iterator().next(), "fields")) {
                resources = queryRouters.get(domainTypeEnum).all(queryParameters.get("fields"));
            } else {
                resources = queryRouters.get(domainTypeEnum).allUsingParams(queryParameters);
            }

            return new ResponseEntity<List<? extends Object>>(resources, resources.size() > 0 ? HttpStatus.OK : HttpStatus.NO_CONTENT);
        } catch(Exception ex) {
            throw requestValidationUtil.buildInternalError(ex, req);
        }
    }

   

}