#include "yacreader_macosx_toolbar.h"

#include <QWidget>
#include <QMacNativeWidget>
#include <qmacfunctions.h>
#include <qpa/qplatformnativeinterface.h>
#include <QsLog.h>

#import <AppKit/AppKit.h>
#import <Foundation/Foundation.h>
#import <Cocoa/Cocoa.h>

#import "shortcuts_manager.h"

//----------------------------
//A custom items separator for NSToolbar
@interface CustomSeparator : NSView

@end


@implementation CustomSeparator

- (void) drawRect:(NSRect)rect {
    [[NSColor colorWithDeviceRed:0.5 green:0.5 blue:0.5 alpha:1] setFill];
    NSRectFill(rect);
    [super drawRect:rect];
}

@end

//----------------------------
//Toolbar delegate, needed for allow disabled/enabled items
@interface MyToolbarDelegate : NSObject <NSToolbarDelegate>
{
@public
    YACReaderMacOSXToolbar * mytoolbar;
}

- (NSToolbarItem *) toolbar:(NSToolbar *)toolbar itemForItemIdentifier:(NSString *) itemIdent willBeInsertedIntoToolbar:(BOOL) willBeInserted;
- (NSArray *)toolbarDefaultItemIdentifiers:(NSToolbar*)toolbar;
- (NSArray *)toolbarAllowedItemIdentifiers:(NSToolbar*)toolbar;
//- (NSArray *)toolbarSelectableItemIdentifiers:(NSToolbar *)toolbar;
- (IBAction)itemClicked:(id)sender;
- (BOOL)validateToolbarItem:(NSToolbarItem *)theItem;
@end


@implementation MyToolbarDelegate

- (NSArray *)toolbarDefaultItemIdentifiers:(NSToolbar*)toolbar
{
    Q_UNUSED(toolbar);

    NSMutableArray *array = [[NSMutableArray alloc] init];

    QList<QMacToolBarItem *> items = mytoolbar->items();
    foreach (const QMacToolBarItem * item, items) {
        [array addObject : item->nativeToolBarItem().itemIdentifier];
    }
    return array;
}

- (NSArray *)toolbarAllowedItemIdentifiers:(NSToolbar*)toolbar
{
    Q_UNUSED(toolbar);

    NSMutableArray *array = [[NSMutableArray alloc] init];

    QList<QMacToolBarItem *> items = mytoolbar->items();
    foreach (const QMacToolBarItem * item, items) {
        [array addObject : item->nativeToolBarItem().itemIdentifier];
    }
    return array;
}


/*
- (NSArray *)toolbarSelectableItemIdentifiers: (NSToolbar *)toolbar
{
    Q_UNUSED(toolbar);

    NSMutableArray *array = [[NSMutableArray alloc] init];

    QList<QMacToolBarItem *> items = mytoolbar->items();
    foreach (const QMacToolBarItem * item, items) {
        [array addObject : item->nativeToolBarItem().itemIdentifier];
    }
    return array;
    //NSMutableArray *array = toolbarPrivate->getItemIdentifiers(toolbarPrivate->items, true);
    //[array addObjectsFromArray:toolbarPrivate->getItemIdentifiers(toolbarPrivate->allowedItems, true)];
    //return array;
}*/

- (IBAction)itemClicked:(id)sender
{
    if([sender respondsToSelector:@selector(itemIdentifier)])
    {
        NSToolbarItem *item = reinterpret_cast<NSToolbarItem *>(sender);

        QString identifier = QString::fromNSString([item itemIdentifier]);
        QMacToolBarItem *toolButton = reinterpret_cast<QMacToolBarItem *>(identifier.toULongLong());
        Q_EMIT toolButton->activated();
    }
}

- (NSToolbarItem *) toolbar: (NSToolbar *)toolbar itemForItemIdentifier: (NSString *) itemIdentifier willBeInsertedIntoToolbar:(BOOL) willBeInserted
{
    Q_UNUSED(toolbar);
    Q_UNUSED(willBeInserted);
    QList<QMacToolBarItem *> items = mytoolbar->items();

    foreach (const QMacToolBarItem * item, items) {
        NSToolbarItem *toolbarItem = item->nativeToolBarItem();
        if([toolbarItem.itemIdentifier isEqual:itemIdentifier])
        {

        [toolbarItem setTarget:self];
        [toolbarItem setAction:@selector(itemClicked:)];

        return toolbarItem;
        }
    }
    return nil;
}

- (BOOL)validateToolbarItem:(NSToolbarItem *)theItem
{
    QString identifier = QString::fromNSString(theItem.itemIdentifier);

    if(mytoolbar->actions.contains(identifier))
    {
        return mytoolbar->actions.value(identifier)->isEnabled();
    }
    else return NO;
}
@end

//----------------------------
//detect changes in native text field
//TODO implement validation and auto completion
@interface MyTextFieldDelegate : NSObject <NSTextFieldDelegate>
{
@public
    YACReaderMacOSXSearchLineEdit * mylineedit;
}
@end

@implementation MyTextFieldDelegate

- (void)controlTextDidChange:(NSNotification *)notification {
    NSTextField *textField = [notification object];
    NSLog(@"%@",[textField stringValue]);
    Q_EMIT mylineedit->filterChanged(YACReader::NoModifiers, QString::fromNSString([textField stringValue]));
}

@end
//----------------------------

YACReaderMacOSXToolbar::YACReaderMacOSXToolbar(QObject *parent)
    :viewSelector(0)
{
    //setup native toolbar
    nativeToolBar= nativeToolbar();
    [nativeToolBar setDisplayMode:NSToolbarDisplayModeIconOnly];
    [nativeToolBar setAllowsUserCustomization:NO];

    delegate = [[MyToolbarDelegate alloc] init];
    ((MyToolbarDelegate *)delegate)->mytoolbar = this;
    [nativeToolBar setDelegate:(MyToolbarDelegate *)delegate];

#ifdef YACREADER_LIBRARY
    NSWindow *nswindow = (NSWindow*) qApp->platformNativeInterface()->nativeResourceForWindow("nswindow", ((QMainWindow*)parent)->windowHandle());
    if([nswindow respondsToSelector:@selector(setTitleVisibility:)])
    {
        yosemite = true;
        //TODO yosemite new constants are not found in compilation time
        [nswindow setTitleVisibility:NSWindowTitleHidden];
        //TODO NSFullSizeContentViewWindowMask produces an offset in the windows' content
        //nswindow.styleMask |= 1 << 15; // NSFullSizeContentViewWindowMask;
        [nativeToolBar setSizeMode:NSToolbarSizeModeSmall]; //TODO figure out how to load specific images in Yosemite
    }else
    {
        [nativeToolBar setSizeMode:NSToolbarSizeModeSmall];
        yosemite = false;
    }
#else
    yosemite = false;
    [nativeToolBar setAutosavesConfiguration:YES]; //TODO this doesn't work
    [nativeToolBar setSizeMode:NSToolbarSizeModeSmall];
#endif
}

void YACReaderMacOSXToolbar::addAction(QAction *action)
{
    QMacToolBarItem *toolBarItem = addItem(action->icon(),action->text());
    if(action->data().toString() == TOGGLE_COMICS_VIEW_ACTION_YL)
        viewSelector = toolBarItem;
    connect(toolBarItem,SIGNAL(activated()),action, SIGNAL(triggered()));

    NSToolbarItem * nativeItem = toolBarItem->nativeToolBarItem();
    actions.insert(QString::fromNSString(nativeItem.itemIdentifier),action);

    MacToolBarItemWrapper * wrapper = new MacToolBarItemWrapper(action,toolBarItem);
    //wrapper->actionToogled(true);
}

void YACReaderMacOSXToolbar::addDropDownItem(const QList<QAction *> &actions, const QAction *defaultAction)
{
    //TODO
}

void YACReaderMacOSXToolbar::addSpace(int size)
{
    QMacToolBarItem *toolBarItem = addItem(QIcon(),"");
    NSToolbarItem * nativeItem = toolBarItem->nativeToolBarItem();

    static const NSRect frameRect = { { 0.0, 0.0 }, { CGFloat(size), 16.0 } };
    NSView *view = [[NSView alloc] initWithFrame:frameRect];

    [nativeItem setView:view];
}

//reimplemented for convenience
void YACReaderMacOSXToolbar::addSeparator()
{
    //QMacToolBar::addSeparator();

    QMacToolBarItem *toolBarItem = addItem(QIcon(),"");
    NSToolbarItem * nativeItem = toolBarItem->nativeToolBarItem();

    static const NSRect frameRect = { { 0.0, 0.0 }, { 1, 16.0 } };
    CustomSeparator *view = [[CustomSeparator alloc] initWithFrame:frameRect];

    [nativeItem setView:view];
}

void YACReaderMacOSXToolbar::addStretch()
{
    QMacToolBarItem *toolBarItem = addItem(QIcon(),"");
    toolBarItem->setStandardItem(QMacToolBarItem::FlexibleSpace);
}

void YACReaderMacOSXToolbar::addWidget(QWidget *widget)
{
    //TODO fix it
   /* QMacNativeWidget *nativeWidget = new QMacNativeWidget();
    QVBoxLayout *layout = new QVBoxLayout();
    layout->addWidget(widget);
    nativeWidget->setLayout(layout);


    NSView *nativeWidgetView = reinterpret_cast<NSView *>(nativeWidget->winId());
    QMacToolBarItem *toolBarItem = addItem(QIcon(),"");
    NSToolbarItem * nativeItem = toolBarItem->nativeToolBarItem();
    [nativeItem setView:nativeWidgetView];*/
}

void YACReaderMacOSXToolbar::show()
{
    [nativeToolBar setVisible:YES];
}

void YACReaderMacOSXToolbar::hide()
{
    [nativeToolBar setVisible:NO];
}

YACReaderMacOSXSearchLineEdit * YACReaderMacOSXToolbar::addSearchEdit()
{
    QMacToolBarItem *toolBarItem = addItem(QIcon(),"");
    NSToolbarItem * nativeItem = toolBarItem->nativeToolBarItem();

    YACReaderMacOSXSearchLineEdit * searchEdit = new YACReaderMacOSXSearchLineEdit();


    if(yosemite)
        [nativeItem setView:(NSTextField *)searchEdit->getNSTextField()];
    else
    {
        static const NSRect searchEditFrameRect = { { 0.0, 0.0 }, { 165, 26.0 } };
        NSView * view = [[NSView alloc] initWithFrame:searchEditFrameRect];
        [view addSubview:((NSTextField *)searchEdit->getNSTextField())];
        [nativeItem setView:view];
    }

    return searchEdit;
}

//deprecated
QAction *YACReaderMacOSXToolbar::addFitToWidthSlider(QAction *attachToAction)
{
    QMacToolBarItem *toolBarItem = addItem(QIcon(":/images/viewer_toolbar/toWidthSlider.png"),"fit to width slider");

    NSToolbarItem * nativeItem = toolBarItem->nativeToolBarItem();
    actions.insert(QString::fromNSString(nativeItem.itemIdentifier),attachToAction);

    QAction * action = new QAction("",attachToAction->parent());

    connect(toolBarItem,SIGNAL(activated()), action, SIGNAL(triggered()));

    return action;
}

void YACReaderMacOSXToolbar::updateViewSelectorIcon(const QIcon &icon)
{
    if(viewSelector)
        viewSelector->setIcon(icon);
}


YACReaderMacOSXSearchLineEdit::YACReaderMacOSXSearchLineEdit()
    :QObject()
{
    NSRect searchEditFrameRect = { { 0.0, -3.0 }, { 165, 32.0 } };
    //NSTextField * searchEdit = [[NSTextField alloc] initWithFrame:searchEditFrameRect];

    NSTextField * searchEdit = [[NSSearchField alloc] initWithFrame:searchEditFrameRect];
    //[searchEdit setBezelStyle:NSTextFieldRoundedBezel];

    [[searchEdit cell] setPlaceholderString:@"type to search"];

    MyTextFieldDelegate * delegate = [[MyTextFieldDelegate alloc] init];
    delegate->mylineedit = this;
    [searchEdit setDelegate:delegate];

    nstextfield = searchEdit;
}

void *YACReaderMacOSXSearchLineEdit::getNSTextField()
{
    return nstextfield;
}

QString YACReaderMacOSXSearchLineEdit::text()
{
    return QString::fromNSString([((NSTextField *)nstextfield) stringValue]);
}

void YACReaderMacOSXSearchLineEdit::clear()
{
    [((NSTextField *)nstextfield) setStringValue:@""];
    emit filterChanged(YACReader::NoModifiers, "");
}

void YACReaderMacOSXSearchLineEdit::clearText()
{
    //TODO be sure that this will not generate any event....
    [((NSTextField *)nstextfield) setStringValue:@""];
}

void YACReaderMacOSXSearchLineEdit::setDisabled(bool disabled)
{
    [((NSTextField *)nstextfield) setEnabled:!disabled];
}

void YACReaderMacOSXSearchLineEdit::setEnabled(bool enabled)
{
    [((NSTextField *)nstextfield) setEnabled:enabled];
}


MacToolBarItemWrapper::MacToolBarItemWrapper(QAction *action, QMacToolBarItem *toolbaritem)
    :action(action),toolbaritem(toolbaritem)
{
    if(action->isCheckable())
    {
        connect(action,SIGNAL(toggled(bool)),this,SLOT(actionToggled(bool)));
        connect(toolbaritem,SIGNAL(activated()), action, SLOT(toggle()));
        updateIcon(action->isChecked());
    }
}

void MacToolBarItemWrapper::actionToggled(bool toogled)
{
    updateIcon(toogled);
}

void MacToolBarItemWrapper::updateIcon(bool enabled)
{
    if(enabled)
    {
        QIcon icon = action->icon();
        QPixmap tempPixmap = icon.pixmap(QSize(24,24));
        QPainter painter;
        painter.begin(&tempPixmap);
        painter.fillRect(QRect(3,21,18,1),QColor("#3F3F3F"));
        painter.fillRect(QRect(3,22,18,1),QColor("#6E6E6E"));
        painter.fillRect(QRect(3,23,18,1),QColor("#EEEEEE"));
        painter.end();

        toolbaritem->setIcon(QIcon(tempPixmap));
    }
    else
        toolbaritem->setIcon(action->icon());
}