aswi2020vldc-gitlab/src/main/java/vldc/aswi/web/controller/ConfigurationController.java @ 6b630778

package vldc.aswi.web.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.AnonymousAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;
import vldc.aswi.domain.Configuration;
import vldc.aswi.domain.Location;
import vldc.aswi.domain.Operator;
import vldc.aswi.domain.parameter.ParameterInConfiguration;
import vldc.aswi.service.ConfigurationManager;
import vldc.aswi.utils.AuthControl;
import vldc.aswi.utils.Utils;

import javax.validation.Valid;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;

/**
 * Manager for configuration.
 */
@Controller
public class ConfigurationController extends BasicController{

    /** Autowired configuration manager */
    @Autowired
    private ConfigurationManager configurationManager;

    /**
     * Opens an configuration page after configuration name was clicked
     * @param id ID of configuration
     * @return modelAndView of page to be shown
     */
    @GetMapping("/configuration")
    public ModelAndView configurationGet(@RequestParam("configurationID") String id) {
        ModelAndView modelAndView = new ModelAndView("assembly");

        ModelMap modelMap = modelAndView.getModelMap();

        Configuration configuration = configurationManager.getConfigurationById(Long.parseLong(id));

        // TODO: 04.05.2020 error page when id doesn't exist

        String userName = AuthControl.getUserName();

        if (userName == null) {
            // TODO: 04.05.2020 error message, user not authenticated
        }
        else if (!userName.equals(configuration.getUser().getUsername())) {
            // TODO: 04.05.2020 error page wrong user
            return new ModelAndView("redirect:/");
        }

        List<ParameterInConfiguration> parametersInConfiguration = new ArrayList<>(configuration.getParametersInConfiguration());
        configuration.setParametersInConfiguration(parametersInConfiguration);

        initializeFields(configuration);
        Comparator<ParameterInConfiguration> comparator = Comparator.comparingInt(o -> o.getParameter().getParameterOrder());

        modelMap.addAttribute("configuration", configuration);
        modelMap.addAttribute("comparator", comparator);

        return modelAndView;
    }

    /**
     * Saves or edits configuration and redirects to the page with configuration
     * @param newConfiguration contained with configuration data
     * @param id ID of configuration, if empty new configuration is created
     * @param bindingResult binding result
     * @return modelAndView with redirection
     */
    @PostMapping("/configuration")
    public ModelAndView configurationPost(@Valid Configuration newConfiguration, BindingResult bindingResult,
                                          @RequestParam("configurationID") String id) {
        ModelAndView modelAndView = new ModelAndView();

        if (bindingResult.hasErrors()) {
            // TODO: 04.05.2020 Error message
            modelAndView.setViewName("redirect:/");

            return modelAndView;
        }

        Configuration configuration = configurationManager.saveConfiguration(newConfiguration, id);

        initializeFields(configuration);

        modelAndView.setViewName("redirect:/configuration?configurationID=" + configuration.getId());

        return modelAndView;
    }

    /**
     * Get method for configuration delete.
     * @param id - ID of configuration.
     * @return ModelAndView for index.
     */
    @GetMapping("/configuration_delete")
    public ModelAndView configurationDeleteGet(@RequestParam("configurationID") String id) {
        ModelAndView modelAndView = new ModelAndView("redirect:/");

        Long configurationId = Utils.tryParseLong(id);

        if (configurationId == null) {
            // TODO: print error in index.
        }

        boolean success = this.configurationManager.deleteConfiguration(configurationId);
        // TODO: check success.

        return modelAndView;
    }

    /**
     * Initializes fields of a given configuration
     * @param configuration configuration which fields should be initialized
     */
    private void initializeFields(Configuration configuration) {
        for(ParameterInConfiguration parameterInConfiguration : configuration.getParametersInConfiguration()) {
            if(parameterInConfiguration.getLocation() == null) {
                parameterInConfiguration.setLocation(new Location());
            }
            if(parameterInConfiguration.getOperator() == null) {
                parameterInConfiguration.setOperator(new Operator());
            }
            if(parameterInConfiguration.getFunctions() == null) {
                parameterInConfiguration.setFunctions(new ArrayList<>());
            }
        }
    }
}