CMSEndPointPage.java

package org.smartly.packages.cms.impl.cms.endpoint;

import org.apache.velocity.VelocityContext;
import org.apache.velocity.app.VelocityEngine;
import org.json.JSONObject;
import org.smartly.commons.logging.Logger;
import org.smartly.commons.util.JsonWrapper;
import org.smartly.commons.util.StringUtils;
import org.smartly.packages.cms.SmartlyHttpCms;
import org.smartly.packages.velocity.impl.VLCManager;

/**
 *
 */
public class CMSEndPointPage {

    public static final String NAME = "page";

    private static final String VHTML_DIRECTIVE = "<!-- [vhtml] -->";

    private final String _url;
    private final VelocityEngine _vengine;
    private final VelocityContext _vcontext;
    private JSONObject _localizations;
    private String _runtime_on_create; // vhtml/template script to run on context page creation
    private String _head; // head bottom
    private String _header; // content header
    private String _content;// content
    private String _footer; // content footer
    private String _script; // custom scripts

    public CMSEndPointPage(final CMSEndPointPage page,
                           final VelocityEngine engine,
                           final VelocityContext context) {
        _vcontext = context;
        _vengine = engine;
        _url = page._url;
        _localizations = page._localizations;
        _runtime_on_create = page._runtime_on_create;
        _head = page._head;
        _header = page._header;
        _content = page._content;
        _footer = page._footer;
        _script = page._script;

        //-- execute scripts to prepare or modify page context --//
        execScript(_url, _runtime_on_create, _vengine, _vcontext);
    }

    public CMSEndPointPage(final String url) {
        _vcontext = null;
        _vengine = null;
        _url = url;
    }

    public String getUrl() {
        return _url;
    }

    public String getContent() {
        if (null != _content && null != _vcontext && null != _vengine && isVhtml(_content)) {
            return merge(_url, _content, _vengine, _vcontext);
        }
        return null != _content ? _content : "";
    }

    public void setContent(String value) {
        this._content = value;
    }

    public String getScript() {
        if (null != _script && null != _vcontext && null != _vengine && isVhtml(_script)) {
            return merge(_url, _script, _vengine, _vcontext);
        }
        return null != _script ? _script : "";
    }

    public void setScript(String value) {
        this._script = value;
    }

    public String getFooter() {
        if (null != _footer && null != _vcontext && null != _vengine && isVhtml(_footer)) {
            return merge(_url, _footer, _vengine, _vcontext);
        }
        return null != _footer ? _footer : "";
    }

    public void setFooter(String _footer) {
        this._footer = _footer;
    }

    public String getHead() {
        if (null != _head && null != _vcontext && null != _vengine && isVhtml(_head)) {
            return merge(_url, _head, _vengine, _vcontext);
        }
        return null != _head ? _head : "";
    }

    public void setHead(String _head) {
        this._head = _head;
    }

    public String getHeader() {
        if (null != _header && null != _vcontext && null != _vengine && isVhtml(_header)) {
            return merge(_url, _header, _vengine, _vcontext);
        }
        return null != _header ? _header : "";
    }

    public void setHeader(String _header) {
        this._header = _header;
    }

    public void setScriptOnCreate(final String value) {
        _runtime_on_create = value;
    }

    public JSONObject getLocalizations() {
        return _localizations;
    }

    public void setLocalizations(JSONObject _localizations) {
        this._localizations = _localizations;
    }

    public String label(final String lang, final String key) {
        return JsonWrapper.getString(_localizations, lang.concat(".").concat(key), "");
    }

    public void label(final String lang, final String key, final Object value) {
        final String deep_key = lang.concat(".").concat(key);
        // set label and autocreate if any
        JsonWrapper.put(_localizations, deep_key, null != value ? value.toString() : "", true);
    }

    // ------------------------------------------------------------------------
    //                      p r i v a t e
    // ------------------------------------------------------------------------

    private Logger getLogger() {
        return SmartlyHttpCms.getCMSLogger();
    }

    // --------------------------------------------------------------------
    //               S T A T I C
    // --------------------------------------------------------------------

    private static boolean isVhtml(final String text) {
        return StringUtils.hasText(text)
                && text.length() > VHTML_DIRECTIVE.length()
                && text.substring(0, VHTML_DIRECTIVE.length()).equalsIgnoreCase(VHTML_DIRECTIVE);
    }

    private static String merge(final String url,
                                final String text,
                                final VelocityEngine engine,
                                final VelocityContext context) {
        try {
            return VLCManager.getInstance().evaluateText(engine, url, text, context);
        } catch (Throwable ignored) {
        }
        return text;
    }

    private static void execScript(final String templateName,
                                   final String script,
                                   final VelocityEngine engine,
                                   final VelocityContext context) {
        final boolean can_run = null != script && null != context && null != engine;
        if (can_run) {
            try {
                final String response = VLCManager.getInstance().evaluateText(engine, templateName, script, context);
            } catch (Throwable ignored) {
            }
        }
    }
}