/**

 * Copyright (c) 2010 Symbian Foundation and/or its subsidiary(-ies).

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of the License "Eclipse Public License v1.0"

 * which accompanies this distribution, and is available

 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

 *

 * Initial Contributors:

 * Symbian Foundation - initial contribution.

 * Contributors:

 * Description:

 * Overview:

 * Details:

 * Platforms/Drives/Compatibility:

 * Assumptions/Requirement/Pre-requisites:

 * Failures and causes:

 */

package org.symbian.tools.tmw.previewer.http.handlers;

import java.io.BufferedReader;

import java.io.ByteArrayInputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.util.Map;

import org.eclipse.core.resources.IProject;

import org.eclipse.core.runtime.CoreException;

import org.eclipse.core.runtime.FileLocator;

import org.eclipse.core.runtime.IPath;

import org.eclipse.core.runtime.Path;

import org.json.simple.JSONObject;

import org.symbian.tools.tmw.previewer.PreviewerPlugin;

public class MasterScriptProvider implements IResourceProvider {

    private static final String[] FILES_CORE = { "loader.js", "widget.js", "systeminfo.js", "menu.js", "menuItem.js",

            "console.js" };

    private static final String PATH_DEVICE_JS = "preview/script/lib/device.js";

    private static final String PATH_LOADER_JS = "preview/script/lib/loader.js";

    private static final String[] FILES_SERVICES = { "AppManager.js", "Calendar.js", "Contact.js", "Landmarks.js",

            "Location.js", "Logging.js", "MediaManagement.js", "Messaging.js", "Sensor.js", "SysInfo.js" };

    private static final String[] FILES_SERVICES_DATA = { "appManager_data.js", "calendar_data.js", "contact_data.js",

            "landmarks_data.js", "location_data.js", "logging_data.js", "mediaManagement_data.js", "messaging_data.js",

            "sensor_data.js", "sysInfo_data.js" };

    private String WRT10;

    private String WRT11_SERVICES;

    public String[] getPaths() {

        return new String[] { PATH_LOADER_JS, PATH_DEVICE_JS };

    }

    public InputStream getResourceStream(IProject project, IPath resource, Map<String, String[]> parameters,

            String sessionId)

            throws IOException, CoreException {

        synchronized (this) {

            if (WRT10 == null || PreviewerPlugin.DONT_CACHE_SCRIPT) {

                loadCoreAPI();

                loadWRT11Services();

            }

        }

        return new ByteArrayInputStream((WRT10 + WRT11_SERVICES).getBytes("utf8"));

    }

    private void load(String base, String jsfile, StringBuilder builder) throws IOException {

        final IPath path = new Path(base).append(jsfile);

        InputStream stream = FileLocator.openStream(PreviewerPlugin.getDefault().getBundle(), path, false);

        if (stream != null) {

            try {

                builder.append(String.format("// Start \"%s\"\n", path.toOSString()));

                BufferedReader reader = new BufferedReader(new InputStreamReader(stream, "utf8"));

                String sz;

                while ((sz = reader.readLine()) != null) {

                    builder.append(sz).append('\n');

                }

                builder.append(String.format("// End \"%s\"\n", path.toOSString()));

            } finally {

                stream.close();

            }

        } else {

            PreviewerPlugin.log("Missing JS file " + path.toOSString(), null);

        }

    }

    private void loadCoreAPI() {

        final StringBuilder builder = new StringBuilder();

        try {

            for (String jsfile : FILES_CORE) {

                load("/preview/script/lib/", jsfile, builder);

            }

        } catch (IOException e) {

            PreviewerPlugin.log(e);

        }

        WRT10 = builder.toString();

    }

    private void loadWRT11Services() {

        final StringBuilder builder = new StringBuilder();

        try {

            load("/preview/script/lib/", "device.js", builder);

            for (String jsfile : FILES_SERVICES) {

                load("/preview/script/lib/sapi", jsfile, builder);

            }

            for (String jsfile : FILES_SERVICES_DATA) {

                load("/preview/data", jsfile, builder);

            }

        } catch (IOException e) {

            PreviewerPlugin.log(e);

        }

        WRT11_SERVICES = builder.toString();

    }

    public void post(IProject project, IPath resource, Map<String, String[]> parameterMap, JSONObject object,

            String sessionId)

            throws IOException, CoreException {

        // Nothing to do

    }

}