/*
 * Copyright 2012-2014 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.lightadmin.core.view.tags.form;

import org.lightadmin.core.persistence.metamodel.PersistentPropertyType;
import org.lightadmin.core.view.editor.JspFragmentFieldControl;
import org.springframework.data.mapping.PersistentProperty;

import javax.servlet.jsp.JspContext;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.JspFragment;
import javax.servlet.jsp.tagext.SimpleTagSupport;
import java.io.IOException;

public class EditControlDispatcherTag extends SimpleTagSupport {

    private static final String DISABLED = "disabled";

    private PersistentProperty persistentProperty;

    private JspFragmentFieldControl customControl;
    private JspFragment simpleEditControl;
    private JspFragment numberEditControl;
    private JspFragment booleanEditControl;
    private JspFragment fileEditControl;
    private JspFragment dateEditControl;
    private JspFragment timeEditControl;
    private JspFragment dateTimeEditControl;
    private JspFragment n2oneEditControl;
    private JspFragment n2manyEditControl;
    private JspFragment mapEditControl;

    @Override
    public void doTag() throws JspException, IOException {
        if (customControl == null) {
            doWithStandardControl();
        } else {
            customControl.setParent(this);
            customControl.setPersistentProperty(persistentProperty);
            customControl.setJspContext(getJspContext());
            customControl.doTag();
        }
    }

    private void doWithStandardControl() throws JspException, IOException {
        JspContext context = getJspContext();
        JspFragment worker;
        switch (PersistentPropertyType.forPersistentProperty(persistentProperty)) {
            case ASSOC_MULTI:
                worker = n2manyEditControl;
                break;
            case ASSOC:
                worker = n2oneEditControl;
                break;
            case EMBEDDED:
                worker = simpleEditControl;
                break;
            case MAP:
                worker = mapEditControl;
                break;
            case BOOL:
                worker = booleanEditControl;
                break;
            case DATE:
                worker = dateEditControl;
                break;
            case TIME:
                worker = timeEditControl;
                break;
            case DATE_TIME:
                worker = dateTimeEditControl;
                break;
            case NUMBER_INTEGER:
                worker = numberEditControl;
                break;
            case NUMBER_FLOAT:
                worker = numberEditControl;
                break;
            case STRING:
                worker = simpleEditControl;
                break;
            case FILE:
                worker = fileEditControl;
                break;
            default:
                worker = simpleEditControl;
                break;
        }
        try {
            worker.invoke(null);
        } finally {
            context.removeAttribute(DISABLED);
        }
    }

    public void setPersistentProperty(PersistentProperty persistentProperty) {
        this.persistentProperty = persistentProperty;
    }

    public void setSimpleEditControl(JspFragment control) {
        this.simpleEditControl = control;
    }

    public void setCustomControl(JspFragmentFieldControl customControl) {
        this.customControl = customControl;
    }

    public void setNumberEditControl(JspFragment control) {
        this.numberEditControl = control;
    }

    public void setBooleanEditControl(JspFragment control) {
        this.booleanEditControl = control;
    }

    public void setDateEditControl(JspFragment control) {
        this.dateEditControl = control;
    }

    public void setN2oneEditControl(JspFragment control) {
        this.n2oneEditControl = control;
    }

    public void setN2manyEditControl(JspFragment control) {
        this.n2manyEditControl = control;
    }

    public void setMapEditControl(JspFragment control) {
        this.mapEditControl = control;
    }

    public void setFileEditControl(final JspFragment fileEditControl) {
        this.fileEditControl = fileEditControl;
    }

    public void setTimeEditControl(JspFragment timeEditControl) {
        this.timeEditControl = timeEditControl;
    }

    public void setDateTimeEditControl(JspFragment dateTimeEditControl) {
        this.dateTimeEditControl = dateTimeEditControl;
    }
}