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#include "web_contents_adapter.h"

#include "content_browser_client_qt.h"
#include "browser_context_qt.h"
#include "type_conversion.h"
#include "web_contents_adapter_client.h"
#include "web_contents_delegate_qt.h"
#include "web_contents_view_qt.h"
#include "web_engine_context.h"

#include "content/public/browser/web_contents.h"
#include "content/public/browser/navigation_entry.h"
#include "content/public/common/page_zoom.h"
#include "content/public/common/renderer_preferences.h"

#include <QGuiApplication>
#include <QStyleHints>

static const int kTestWindowWidth = 800;
static const int kTestWindowHeight = 600;

class WebContentsAdapterPrivate {
public:
    WebContentsAdapterPrivate();
    scoped_refptr<WebEngineContext> engineContext;
    scoped_ptr<content::WebContents> webContents;
    scoped_ptr<WebContentsDelegateQt> webContentsDelegate;
    WebContentsAdapterClient *adapterClient;
};

WebContentsAdapterPrivate::WebContentsAdapterPrivate()
    // This has to be the first thing we create, and the last we destroy.
    : engineContext(WebEngineContext::current())
{
}

WebContentsAdapter::WebContentsAdapter(content::WebContents *webContents)
    : d_ptr(new WebContentsAdapterPrivate)
{
    Q_D(WebContentsAdapter);
    d->webContents.reset(webContents);
}

WebContentsAdapter::~WebContentsAdapter()
{
}

void WebContentsAdapter::initialize(WebContentsAdapterClient *adapterClient)
{
    Q_D(WebContentsAdapter);
    d->adapterClient = adapterClient;

    // Create our own if a WebContents wasn't provided at construction.
    if (!d->webContents) {
        content::BrowserContext* browserContext = ContentBrowserClientQt::Get()->browser_context();
        content::WebContents::CreateParams create_params(browserContext, NULL);
        create_params.routing_id = MSG_ROUTING_NONE;
        create_params.initial_size = gfx::Size(kTestWindowWidth, kTestWindowHeight);
        create_params.context = reinterpret_cast<gfx::NativeView>(adapterClient);
        d->webContents.reset(content::WebContents::Create(create_params));
    }

    content::RendererPreferences* rendererPrefs = d->webContents->GetMutableRendererPrefs();
    rendererPrefs->use_custom_colors = true;
    // Qt returns a flash time (the whole cycle) in ms, chromium expects just the interval in seconds
    const int qtCursorFlashTime = QGuiApplication::styleHints()->cursorFlashTime();
    rendererPrefs->caret_blink_interval = 0.5 * static_cast<double>(qtCursorFlashTime) / 1000;
    d->webContents->GetRenderViewHost()->SyncRendererPrefs();

    // Create and attach a WebContentsDelegateQt to the WebContents.
    d->webContentsDelegate.reset(new WebContentsDelegateQt(d->webContents.get(), adapterClient));

    // Let the WebContent's view know about the WebContentsAdapterClient.
    WebContentsViewQt* contentsView = static_cast<WebContentsViewQt*>(d->webContents->GetView());
    contentsView->initialize(adapterClient);
}

bool WebContentsAdapter::canGoBack() const
{
    Q_D(const WebContentsAdapter);
    return d->webContents->GetController().CanGoBack();
}

bool WebContentsAdapter::canGoForward() const
{
    Q_D(const WebContentsAdapter);
    return d->webContents->GetController().CanGoForward();
}

bool WebContentsAdapter::isLoading() const
{
    Q_D(const WebContentsAdapter);
    return d->webContents->IsLoading();
}

void WebContentsAdapter::stop()
{
    Q_D(WebContentsAdapter);
    content::NavigationController& controller = d->webContents->GetController();

    int index = controller.GetPendingEntryIndex();
    if (index != -1)
        controller.RemoveEntryAtIndex(index);

    d->webContents->GetView()->Focus();
}

void WebContentsAdapter::reload()
{
    Q_D(WebContentsAdapter);
    d->webContents->GetController().Reload(/*checkRepost = */false);
    d->webContents->GetView()->Focus();
}

void WebContentsAdapter::load(const QUrl &url)
{
    Q_D(WebContentsAdapter);
    content::NavigationController::LoadURLParams params(toGurl(url));
    params.transition_type = content::PageTransitionFromInt(content::PAGE_TRANSITION_TYPED | content::PAGE_TRANSITION_FROM_ADDRESS_BAR);
    d->webContents->GetController().LoadURLWithParams(params);
    d->webContents->GetView()->Focus();
}

QUrl WebContentsAdapter::activeUrl() const
{
    Q_D(const WebContentsAdapter);
    return toQt(d->webContents->GetVisibleURL());
}

QString WebContentsAdapter::pageTitle() const
{
    Q_D(const WebContentsAdapter);
    content::NavigationEntry* entry = d->webContents->GetController().GetVisibleEntry();
    return entry ? toQt(entry->GetTitle()) : QString();
}

void WebContentsAdapter::navigateToIndex(int offset)
{
    Q_D(WebContentsAdapter);
    d->webContents->GetController().GoToIndex(offset);
    d->webContents->GetView()->Focus();
}

void WebContentsAdapter::navigateToOffset(int offset)
{
    Q_D(WebContentsAdapter);
    d->webContents->GetController().GoToOffset(offset);
    d->webContents->GetView()->Focus();
}

int WebContentsAdapter::navigationEntryCount()
{
    Q_D(WebContentsAdapter);
    return d->webContents->GetController().GetEntryCount();
}

int WebContentsAdapter::currentNavigationEntryIndex()
{
    Q_D(WebContentsAdapter);
    return d->webContents->GetController().GetCurrentEntryIndex();
}

QUrl WebContentsAdapter::getNavigationEntryOriginalUrl(int index)
{
    Q_D(WebContentsAdapter);
    content::NavigationEntry *entry = d->webContents->GetController().GetEntryAtIndex(index);
    return entry ? toQt(entry->GetOriginalRequestURL()) : QUrl();
}

QUrl WebContentsAdapter::getNavigationEntryUrl(int index)
{
    Q_D(WebContentsAdapter);
    content::NavigationEntry *entry = d->webContents->GetController().GetEntryAtIndex(index);
    return entry ? toQt(entry->GetURL()) : QUrl();
}

QString WebContentsAdapter::getNavigationEntryTitle(int index)
{
    Q_D(WebContentsAdapter);
    content::NavigationEntry *entry = d->webContents->GetController().GetEntryAtIndex(index);
    return entry ? toQt(entry->GetTitle()) : QString();
}

void WebContentsAdapter::clearNavigationHistory()
{
    Q_D(WebContentsAdapter);
    if (d->webContents->GetController().CanPruneAllButVisible())
        d->webContents->GetController().PruneAllButVisible();
}

void WebContentsAdapter::setZoomFactor(qreal factor)
{
    Q_D(WebContentsAdapter);
    if (content::RenderViewHost *rvh = d->webContents->GetRenderViewHost())
        rvh->SetZoomLevel(content::ZoomFactorToZoomLevel(static_cast<double>(factor)));
}

qreal WebContentsAdapter::currentZoomFactor() const
{
    Q_D(const WebContentsAdapter);
    return static_cast<qreal>(content::ZoomLevelToZoomFactor(d->webContents->GetZoomLevel()));
}