/*
  This file is part of the PhantomJS project from Ofi Labs.

  Copyright (C) 2011 Ariya Hidayat <ariya.hidayat@gmail.com>
  Copyright (C) 2011 Ivan De Marino <ivan.de.marino@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    * Neither the name of the <organization> nor the
      names of its contributors may be used to endorse or promote products
      derived from this software without specific prior written permission.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#include "phantom.h"

#include <QApplication>
#include <QDir>
#include <QFileInfo>
#include <QFile>
#include <QWebPage>

#include "consts.h"
#include "terminal.h"
#include "utils.h"
#include "webpage.h"
#include "webserver.h"
#include "repl.h"
#include "system.h"
#include "callback.h"


// public:
Phantom::Phantom(QObject *parent)
    : REPLCompletable(parent)
    , m_terminated(false)
    , m_returnValue(0)
    , m_filesystem(0)
    , m_system(0)
{
    // second argument: script name
    QStringList args = QApplication::arguments();

    // Skip the first argument, i.e. the application executable (phantomjs).
    args.removeFirst();

    m_config.init(&args);

    if (m_config.helpFlag()) {
        m_terminated = true;
        Utils::showUsage();
        return;
    }

    if (m_config.versionFlag()) {
        m_terminated = true;
        Terminal::instance()->cout(QString("%1").arg(PHANTOMJS_VERSION_STRING));
        return;
    }

    if (!m_config.unknownOption().isEmpty()) {
        Terminal::instance()->cerr(m_config.unknownOption());
        m_terminated = true;
        return;
    }

    m_page = new WebPage(this, &m_config, QUrl::fromLocalFile(m_config.scriptFile()));
    m_pages.append(m_page);

    if (m_config.proxyHost().isEmpty()) {
        QNetworkProxyFactory::setUseSystemConfiguration(true);
    } else {
        QString proxyType = m_config.proxyType();
        QNetworkProxy::ProxyType networkProxyType = QNetworkProxy::HttpProxy;

        if (proxyType == "socks5") {
            networkProxyType = QNetworkProxy::Socks5Proxy;
        }

        if(!m_config.proxyAuthUser().isEmpty() && !m_config.proxyAuthPass().isEmpty()) {
            QNetworkProxy proxy(networkProxyType, m_config.proxyHost(), m_config.proxyPort(), m_config.proxyAuthUser(), m_config.proxyAuthPass());
            QNetworkProxy::setApplicationProxy(proxy);
        } else {
            QNetworkProxy proxy(networkProxyType, m_config.proxyHost(), m_config.proxyPort());
            QNetworkProxy::setApplicationProxy(proxy);
        }
    }

    // Set output encoding
    Terminal::instance()->setEncoding(m_config.outputEncoding());

    // Set script file encoding
    m_scriptFileEnc.setEncoding(m_config.scriptEncoding());

    connect(m_page, SIGNAL(javaScriptConsoleMessageSent(QString)),
            SLOT(printConsoleMessage(QString)));
    connect(m_page, SIGNAL(initialized()),
            SLOT(onInitialized()));

    m_defaultPageSettings[PAGE_SETTINGS_LOAD_IMAGES] = QVariant::fromValue(m_config.autoLoadImages());
    m_defaultPageSettings[PAGE_SETTINGS_JS_ENABLED] = QVariant::fromValue(true);
    m_defaultPageSettings[PAGE_SETTINGS_XSS_AUDITING] = QVariant::fromValue(false);
    m_defaultPageSettings[PAGE_SETTINGS_USER_AGENT] = QVariant::fromValue(m_page->userAgent());
    m_defaultPageSettings[PAGE_SETTINGS_LOCAL_ACCESS_REMOTE] = QVariant::fromValue(m_config.localToRemoteUrlAccessEnabled());
    m_defaultPageSettings[PAGE_SETTINGS_WEB_SECURITY_ENABLED] = QVariant::fromValue(m_config.webSecurityEnabled());
    m_page->applySettings(m_defaultPageSettings);

    setLibraryPath(QFileInfo(m_config.scriptFile()).dir().absolutePath());
}

Phantom::~Phantom()
{
}

QStringList Phantom::args() const
{
    return m_config.scriptArgs();
}

QVariantMap Phantom::defaultPageSettings() const
{
    return m_defaultPageSettings;
}

QString Phantom::outputEncoding() const
{
    return Terminal::instance()->getEncoding();
}

void Phantom::setOutputEncoding(const QString &encoding)
{
    Terminal::instance()->setEncoding(encoding);
}

bool Phantom::execute()
{
    if (m_terminated)
        return false;

    if (m_config.scriptFile().isEmpty()) {
        // REPL mode requested
        // Create the REPL: it will launch itself, no need to store this variable.
        REPL::getInstance(m_page->mainFrame(), this);
    } else {
        // Load the User Script
        if (m_config.debug()) {
            // Debug enabled
            if (!Utils::loadJSForDebug(m_config.scriptFile(), m_scriptFileEnc, QDir::currentPath(), m_page->mainFrame(), m_config.remoteDebugAutorun())) {
                m_returnValue = -1;
                return false;
            }
            m_page->showInspector(m_config.remoteDebugPort());
        } else {
            if (!Utils::injectJsInFrame(m_config.scriptFile(), m_scriptFileEnc, QDir::currentPath(), m_page->mainFrame(), true)) {
                m_returnValue = -1;
                return false;
            }
        }
    }

    return !m_terminated;
}

int Phantom::returnValue() const
{
    return m_returnValue;
}

QString Phantom::libraryPath() const
{
   return m_page->libraryPath();
}

void Phantom::setLibraryPath(const QString &libraryPath)
{
   m_page->setLibraryPath(libraryPath);
}

QString Phantom::scriptName() const
{
    return QFileInfo(m_config.scriptFile()).fileName();
}

QVariantMap Phantom::version() const
{
    QVariantMap result;
    result["major"] = PHANTOMJS_VERSION_MAJOR;
    result["minor"] = PHANTOMJS_VERSION_MINOR;
    result["patch"] = PHANTOMJS_VERSION_PATCH;
    return result;
}

QObject *Phantom::page() const
{
    return m_page;
}

// public slots:
QObject *Phantom::createWebPage()
{
    WebPage *page = new WebPage(this, &m_config);
    m_pages.append(page);
    page->applySettings(m_defaultPageSettings);
    page->setLibraryPath(QFileInfo(m_config.scriptFile()).dir().absolutePath());

    if (m_config.debug()) {
      page->showInspector(m_config.remoteDebugPort());
    }

    return page;
}

QObject* Phantom::createWebServer()
{
    WebServer *server = new WebServer(this, &m_config);
    m_servers.append(server);
    ///TODO:
//     page->applySettings(m_defaultPageSettings);
//     page->setLibraryPath(QFileInfo(m_config.scriptFile()).dir().absolutePath());
    return server;
}

QObject *Phantom::createFilesystem()
{
    if (!m_filesystem)
        m_filesystem = new FileSystem(this);

    return m_filesystem;
}

QObject *Phantom::createSystem()
{
    if (!m_system) {
        m_system = new System(this);

        QStringList systemArgs;
        systemArgs += m_config.scriptFile();
        systemArgs += m_config.scriptArgs();
        m_system->setArgs(systemArgs);
    }

    return m_system;
}

QObject* Phantom::createCallback()
{
    return new Callback(this);
}

QString Phantom::loadModuleSource(const QString &name)
{
    QString moduleSource;
    QString moduleSourceFilePath = ":/modules/" + name + ".js";

    moduleSource = Utils::readResourceFileUtf8(moduleSourceFilePath);

    return moduleSource;
}

bool Phantom::injectJs(const QString &jsFilePath)
{
    return Utils::injectJsInFrame(jsFilePath, libraryPath(), m_page->mainFrame());
}

void Phantom::exit(int code)
{
    if (m_config.debug()) {
        Terminal::instance()->cout("Phantom::exit() called but not quitting in debug mode.");
    } else {
        doExit(code);
    }
}

void Phantom::debugExit(int code)
{
    doExit(code);
}

// private slots:
void Phantom::printConsoleMessage(const QString &message)
{
    Terminal::instance()->cout(message);
}

void Phantom::onInitialized()
{
    // Add 'phantom' object to the global scope
    m_page->mainFrame()->addToJavaScriptWindowObject("phantom", this);

    // Bootstrap the PhantomJS scope
    m_page->mainFrame()->evaluateJavaScript(
        Utils::readResourceFileUtf8(":/bootstrap.js"),
        QString("phantomjs://bootstrap.js")
    );
}

// private:
void Phantom::doExit(int code)
{
    if (m_config.debug())
    {
        Utils::cleanupFromDebug();
    }

    emit aboutToExit(code);
    m_terminated = true;
    m_returnValue = code;
    qDeleteAll(m_pages);
    m_pages.clear();
    m_page = 0;
    QApplication::instance()->exit(code);
}

void Phantom::initCompletions()
{
    // Add completion for the Dynamic Properties of the 'phantom' object
    // properties
    addCompletion("args");
    addCompletion("defaultPageSettings");
    addCompletion("libraryPath");
    addCompletion("outputEncoding");
    addCompletion("scriptName");
    addCompletion("version");
    // functions
    addCompletion("exit");
    addCompletion("injectJs");
}