package net.sourceforge.solexatools.webapp.controller;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import net.sourceforge.seqware.common.business.WorkflowService;
import net.sourceforge.seqware.common.model.Registration;
import net.sourceforge.seqware.common.model.Workflow;
import net.sourceforge.solexatools.Security;
import net.sourceforge.solexatools.util.LaunchWorkflowUtil;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.BaseCommandController;

/**
 * <p>
 * WorkflowParamListController class.
 * </p>
 * 
 * @author boconnor
 * @version $Id: $Id
 */
public class WorkflowParamListController extends BaseCommandController {
    private WorkflowService workflowService;

    /**
     * <p>
     * Constructor for WorkflowParamListController.
     * </p>
     */
    public WorkflowParamListController() {
        super();
        setSupportedMethods(new String[] { METHOD_GET });
    }

    /**
     * {@inheritDoc}
     * 
     * @return
     * @throws java.lang.Exception
     */
    @Override
    protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) throws Exception {

        // Registration registration = Security.requireRegistration(request, response);
        Registration registration = Security.getRegistration(request);
        if (registration == null) return new ModelAndView("redirect:/login.htm");

        /**
         * Pass registration so that we can filter the list if its appropriate to do so.
         */
        Integer workflowId = getRequestedWorflowId(request);
        Workflow workflow = getWorkflowService().findByID(workflowId);
        ModelAndView modelAndView = new ModelAndView("WorkflowParamList");

        // validation workflow for Launch workflow process
        Boolean isHasError = false;
        String errorMessage = "";

        if (workflowId == null) {
            isHasError = true;
            errorMessage = this.getMessageSourceAccessor().getMessage("launcWorkflow.error.no.defined.workflow");
        }
        /*
         * if(!isHasError && (workflow.getVisibleWorkflowParams() == null || workflow.getVisibleWorkflowParams().size() == 0) ) { isHasError
         * = true; errorMessage = this.getMessageSourceAccessor(). getMessage("error.list.visible.workflow.param.empty", new Object[]
         * {workflow.getFullName()}); }
         */
        if (!workflow.isLaunch()) {
            isHasError = true;
            errorMessage = this.getMessageSourceAccessor().getMessage("error.list.visible.workflow.param.empty",
                    new Object[] { workflow.getFullName() });
        }

        String defaultValueIfValueEmpty = this.getMessageSourceAccessor().getMessage("defaultValue.if.value.workflow.param.empty");

        modelAndView.addObject("defaultValueIfValueEmpty", defaultValueIfValueEmpty);
        modelAndView.addObject("isHasError", isHasError);
        modelAndView.addObject("errorMessage", errorMessage);
        modelAndView.addObject("workflow", workflow);
        // workflow.getVisibleWorkflowParams();

        modelAndView.addObject("registration", registration);

        // remove all selected Items in Session
        // LaunchWorkflowUtil.removeSelectedItemsLaunchWorkflow(request);
        Workflow currWorkflow = LaunchWorkflowUtil.getCurrentWorkflow(request);
        if (currWorkflow.getWorkflowId() != null && !currWorkflow.equals(workflow)) {
            LaunchWorkflowUtil.removeSelectedItemsLaunchWorkflow(request);
            // request.getSession(false).removeAttribute("selectedWorkflowParamValueId");
        }

        return modelAndView;
    }

    private Integer getRequestedWorflowId(HttpServletRequest request) {
        Integer workflowId = null;
        String strWorkflowId = request.getParameter("workflowId");
        if (strWorkflowId != null && !strWorkflowId.equals("null")) {
            workflowId = Integer.parseInt(strWorkflowId);
        }
        return workflowId;
    }

    /**
     * <p>
     * Getter for the field <code>workflowService</code>.
     * </p>
     * 
     * @return a {@link net.sourceforge.seqware.common.business.WorkflowService} object.
     */
    public WorkflowService getWorkflowService() {
        return workflowService;
    }

    /**
     * <p>
     * Setter for the field <code>workflowService</code>.
     * </p>
     * 
     * @param workflowService
     *            a {@link net.sourceforge.seqware.common.business.WorkflowService} object.
     */
    public void setWorkflowService(WorkflowService workflowService) {
        this.workflowService = workflowService;
    }
}