/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is the Mozilla XUL Toolkit.
 *
 * The Initial Developer of the Original Code is
 * the Mozilla Foundation.
 * Portions created by the Initial Developer are Copyright (C) 2010-2019
 * the Initial Developer. All Rights Reserved.
 *
 * Based on original works by Scott Greenlay <scott@greenlay.net> (bug 608049).
 * Ported to TenFourFox and 10.4 SDK by Cameron Kaiser
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#import <Cocoa/Cocoa.h>
#import <objc/objc-runtime.h>
extern "C" {
    IMP class_lookupMethod(Class, SEL);
};
#define class_getMethodImplementation(x,y) class_lookupMethod(x,y)

#import "MacScripting.h"

#include "nsIApplescriptService.h"

#include "nsCOMPtr.h"
#include "nsComponentManagerUtils.h"
#include "nsArrayUtils.h"
#include "nsString.h"
#include "nsContentCID.h"
#include "nsIServiceManager.h"
#include "nsServiceManagerUtils.h"
#include "nsIAppStartup.h"
#include "nsISelection.h"
#include "nsIDOMNode.h"
#include "nsIDOMDocument.h"
#include "nsIDOMHTMLDocument.h"
#include "nsIDOMSerializer.h"
#include "nsIDocument.h"
#include "nsIDocumentEncoder.h"
#include "nsIWindowMediator.h"
#include "nsISimpleEnumerator.h"
#include "nsIBaseWindow.h"
#include "nsIWidget.h"
#include "nsIXULWindow.h"
#include "nsIDOMWindow.h"
#include "nsPIDOMWindow.h"
#include "nsIDOMWindowUtils.h"
#include "nsIInterfaceRequestor.h"
#include "nsIDOMLocation.h"
#include "nsIPresShell.h"
#include "nsObjCExceptions.h"
#include "nsToolkitCompsCID.h"

// 10.4 no haz.
typedef int NSInteger;
typedef unsigned int NSUInteger;

#define NSIntegerMax    LONG_MAX
#define NSIntegerMin    LONG_MIN
#define NSUIntegerMax   ULONG_MAX

@class GeckoObject;
@class GeckoWindow;
@class GeckoTab;

#pragma mark -

@interface GeckoScriptingRoot : NSObject
{
  @private
  // These must persist for the life of the scripting application.
  struct objc_method swinMeth;
  struct objc_method insoMeth;
  struct objc_method remoMeth;
  struct objc_method_list methodList;
  BOOL didInit;
}

+ (GeckoScriptingRoot*)sharedScriptingRoot;
- (id)init;
- (void)makeApplicationScriptable:(NSApplication*)application;

@end

#pragma mark -

@interface GeckoWindow : NSObject
{
  NSUInteger                mIndex;
  nsCOMPtr<nsIXULWindow>    mXULWindow;
}

- (id)initWithIndex:(NSUInteger)index andXULWindow:(nsIXULWindow*)xulWindow;
+ (id)windowWithIndex:(NSUInteger)index andXULWindow:(nsIXULWindow*)xulWindow;

// Default Scripting Dictionary
- (NSString*)title;
- (NSUInteger)orderedIndex;
- (BOOL)isMiniaturizable;
- (BOOL)isMiniaturized;
- (void)setIsMiniaturized:(BOOL)miniaturized;
- (BOOL)isResizable;
- (BOOL)isVisible;
- (void)setIsVisible:(BOOL)visible;
- (BOOL)isZoomable;
- (BOOL)isZoomed;
- (void)setIsZoomed:(BOOL)zoomed;

- (id)handleCloseScriptCommand:(NSCloseCommand*)command;

// Gecko Scripting Dictionary
- (NSArray*)scriptTabs;
- (GeckoTab*)selectedScriptTab;

// Helper Methods
- (void)_setIndex:(NSUInteger)index;

@end

#pragma mark -

@interface GeckoTab : NSObject
{
  NSUInteger                mIndex;
  GeckoWindow               *mWindow;
  nsCOMPtr<nsIDOMWindow>    mContentWindow;
}

- (id)initWithIndex:(NSUInteger)index andContentWindow:(nsIDOMWindow*)contentWindow andWindow:(GeckoWindow*)window;
+ (id)tabWithIndex:(NSUInteger)index andContentWindow:(nsIDOMWindow*)contentWindow andWindow:(GeckoWindow*)window;

// Gecko Scripting Dictionary
- (NSString*)title;
- (NSUInteger)orderedIndex;
- (NSString*)URL;
- (NSString*)source;
- (NSString*)text;
- (NSString*)selectedText;

- (void)setURL:(NSString*)newURL;

- (id)handleCloseScriptCommand:(NSCloseCommand*)command;

// Helper Methods
- (void)_setWindow:(GeckoWindow*)window;
- (void)_setIndex:(NSUInteger)index;

@end

#pragma mark -

@interface GeckoQuit : NSScriptCommand
{
}

@end

#pragma mark -
void SetupMacScripting(void) {
    NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
 
    [[GeckoScriptingRoot sharedScriptingRoot] makeApplicationScriptable:[NSApplication sharedApplication]];

    NS_OBJC_END_TRY_ABORT_BLOCK;
}

#pragma mark -

static GeckoScriptingRoot *sharedScriptingRoot = nil;

@implementation GeckoScriptingRoot

+ (GeckoScriptingRoot*)sharedScriptingRoot {
  @synchronized (sharedScriptingRoot) {
    if (!sharedScriptingRoot) {
      sharedScriptingRoot = [[GeckoScriptingRoot alloc] init];
    }
  }
  return sharedScriptingRoot;
}

- (id)init {
  self = [super init];
  if (self)
    didInit = NO;
  return self;
}

- (void)makeApplicationScriptable:(NSApplication*)application {
  if (didInit) return;

  NS_WARNING("starting Script Host");
  IMP scriptWindows = class_getMethodImplementation([self class], @selector(scriptWindows));
//  class_addMethod([application class], @selector(scriptWindows), scriptWindows, "@@:");
  
  IMP insertScriptWindows = class_getMethodImplementation([self class], @selector(insertObject:inScriptWindowsAtIndex:));
//  class_addMethod([application class], @selector(insertObject:inScriptWindowsAtIndex:), insertScriptWindows, "v@:@I");
  
  IMP removeScriptWindows = class_getMethodImplementation([self class], @selector(removeObjectFromScriptWindowsAtIndex:));
//  class_addMethod([application class], @selector(removeObjectFromScriptWindowsAtIndex:), removeScriptWindows, "v@:I");

  // The 10.4 SDK doesn't have class_addMethod, but it does have class_addMethods.
  swinMeth.method_name = @selector(scriptWindows);
  swinMeth.method_imp = scriptWindows;
  swinMeth.method_types = "@@:";

  insoMeth.method_name = @selector(insertObject:inScriptWindowsAtIndex:);
  insoMeth.method_imp = insertScriptWindows;
  insoMeth.method_types = "v@:@l";

  remoMeth.method_name = @selector(removeObjectFromScriptWindowsAtIndex:);
  remoMeth.method_imp = removeScriptWindows;
  remoMeth.method_types = "v@:l";

  methodList.method_count = 3;
  methodList.method_list[0] = swinMeth;
  methodList.method_list[1] = insoMeth;
  methodList.method_list[2] = remoMeth;

  class_addMethods([application class], &methodList);
  didInit = YES;
}

- (NSArray*)scriptWindows {
  NS_WARNING("AppleScript: root scriptWindows");
	nsCOMPtr<nsIApplescriptService> applescriptService(do_GetService("@mozilla.org/applescript-service;1"));
  if (!applescriptService) {
    return [NSArray arrayWithObjects:nil];
  }
  
  nsCOMPtr<nsIArray> windows;
  if (NS_FAILED(applescriptService->GetWindows(getter_AddRefs(windows))) || !windows) {
    return [NSArray arrayWithObjects:nil];
  }
  
  NSUInteger index = 0;
  NSMutableArray *windowArray = [NSMutableArray array];
  
  PRUint32 length;
  windows->GetLength(&length);
  for (PRUint32 i = 0; i < length; ++i) {
    nsCOMPtr<nsIXULWindow> xulWindow(do_QueryElementAt(windows, i));
    if (xulWindow) {
      GeckoWindow *window = [GeckoWindow windowWithIndex:index andXULWindow:xulWindow];
      if (window) {
        [windowArray addObject:window];
        index++;
      }
    }
  }
  return windowArray;
}

- (void)insertObject:(NSObject*)object inScriptWindowsAtIndex:(NSUInteger)index {
  if (![object isKindOfClass:[GeckoWindow class]]) {
    return;
  }
  
  GeckoWindow *window = (GeckoWindow*)object;
  [window _setIndex:index];
  
  nsCOMPtr<nsIApplescriptService> applescriptService(do_GetService("@mozilla.org/applescript-service;1"));
  if (applescriptService) {
    (void*)applescriptService->CreateWindowAtIndex(index);
  }
}

- (void)removeObjectFromScriptWindowsAtIndex:(NSUInteger)index {
  NSArray *windows = [self scriptWindows];
  if (windows && index < [windows count]) {
    NSCloseCommand *closeCommend = [[[NSCloseCommand alloc] init] autorelease];
    [(GeckoWindow*)[windows objectAtIndex:index] handleCloseScriptCommand:closeCommend];
  }
}

@end

#pragma mark -

@implementation GeckoWindow

+ (id)windowWithIndex:(NSUInteger)index andXULWindow:(nsIXULWindow*)xulWindow {
  return [[[self alloc] initWithIndex:index andXULWindow:xulWindow] autorelease];
}

- (id)initWithIndex:(NSUInteger)index andXULWindow:(nsIXULWindow*)xulWindow {
  self = [super init];
  
  if (self) {
    mIndex = index;
    mXULWindow = xulWindow;
  }
  
  return self;
}

- (void)dealloc {
  [super dealloc];
}

- (void)_setIndex:(NSUInteger)index {
  mIndex = index;
}

- (id)uniqueID {
  return [NSNumber numberWithInt:mIndex];
}

- (NSScriptObjectSpecifier*)objectSpecifier
{
  NSScriptObjectSpecifier *objectSpecifier = [[NSUniqueIDSpecifier alloc] initWithContainerClassDescription:[NSScriptClassDescription classDescriptionForClass:[NSApp class]] 
                                                                                         containerSpecifier:[NSApp objectSpecifier]
                                                                                                        key:@"scriptWindows"
                                                                                                   uniqueID:[self uniqueID]];
  
  return [objectSpecifier autorelease];
}

- (NSWindow*)window
{
  nsresult rv;
  nsCOMPtr<nsIBaseWindow> baseWindow = do_QueryInterface(mXULWindow, &rv);
  NS_ENSURE_SUCCESS(rv, nil);
  
  nsCOMPtr<nsIWidget> widget;
  rv = baseWindow->GetMainWidget(getter_AddRefs(widget));
  NS_ENSURE_SUCCESS(rv, nil);
  
  return (NSWindow*)widget->GetNativeData(NS_NATIVE_WINDOW);
}

- (NSString*)title
{
  NS_WARNING("AppleScript: window title");
  NSWindow *window = [self window];
  return window ? [window title] : @"";
}

- (NSUInteger)orderedIndex {
  return mIndex; 
}

- (BOOL)isMiniaturizable {
  NSWindow *window = [self window];
  return window ? [window isMiniaturizable] : false;
}

- (BOOL)isMiniaturized {
  NSWindow *window = [self window];
  return window ? [window isMiniaturizable] : false;
}

- (void)setIsMiniaturized:(BOOL)miniaturized {
  NSWindow *window = [self window];
  if (window) {
    [window setIsMiniaturized:miniaturized];
  }
}

- (BOOL)isResizable {
  NSWindow *window = [self window];
  return window ? [window isResizable] : false;
}

- (BOOL)isVisible {
  NSWindow *window = [self window];
  return window ? [window isVisible] : false;
}

- (void)setIsVisible:(BOOL)visible {
  NSWindow *window = [self window];
  if (window) {
    [window setIsVisible:visible];
  }
}

- (BOOL)isZoomable {
  NSWindow *window = [self window];
  return window ? [window isZoomable] : false;
}

- (BOOL)isZoomed {
  NSWindow *window = [self window];
  return window ? [window isZoomed] : false;
}

- (void)setIsZoomed:(BOOL)zoomed {
  NSWindow *window = [self window];
  if (window) {
    [window setIsZoomed:zoomed];
  }
}

- (id)handleCloseScriptCommand:(NSCloseCommand*)command {
  NSWindow *window = [self window];
  if (window) {
    return [window handleCloseScriptCommand:command];
  }
  return nil;
}

- (NSArray*)scriptTabs {
  NS_WARNING("AppleScript: window scriptTabs");
  nsCOMPtr<nsIApplescriptService> applescriptService(do_GetService("@mozilla.org/applescript-service;1"));
  if (!applescriptService) {
    return [NSArray arrayWithObjects:nil];
  }
  
  nsCOMPtr<nsIArray> tabs;
  if (NS_FAILED(applescriptService->GetTabsInWindow(mIndex, getter_AddRefs(tabs))) || !tabs) {
    return [NSArray arrayWithObjects:nil];
  }
  
  NSUInteger index = 0;
  NSMutableArray *tabArray = [NSMutableArray array];
  
  PRUint32 length;
  tabs->GetLength(&length);
  for (PRUint32 i = 0; i < length; ++i) {
    nsCOMPtr<nsIDOMWindow> contentWindow(do_QueryElementAt(tabs, i));
    if (contentWindow) {
      GeckoTab *tab = [GeckoTab tabWithIndex:index andContentWindow:contentWindow andWindow:self];
      [tabArray addObject:tab];
      index++;
    }
  }
  return tabArray;
}

- (GeckoTab*)selectedScriptTab {
  NS_WARNING("AppleScript: window selectedScriptTab");
  nsCOMPtr<nsIApplescriptService> applescriptService(do_GetService("@mozilla.org/applescript-service;1"));
  if (!applescriptService) {
    return nil;
  }
  
  nsCOMPtr<nsIDOMWindow> contentWindow;
	PRUint32 tabIndex = 0;
  if (NS_FAILED(applescriptService->GetCurrentTabInWindow(mIndex, &tabIndex, getter_AddRefs(contentWindow))) || !contentWindow) {
    return nil;
  }
  
  return [GeckoTab tabWithIndex:tabIndex andContentWindow:contentWindow andWindow:self];
}

- (void)insertObject:(NSObject*)object inScriptTabsAtIndex:(NSUInteger)index {
  if (![object isKindOfClass:[GeckoTab class]]) {
    return;
  }
  
  [(GeckoTab*)object _setWindow:self];
  [(GeckoTab*)object _setIndex:index];
  
  nsCOMPtr<nsIApplescriptService> applescriptService(do_GetService("@mozilla.org/applescript-service;1"));
  if (applescriptService) {
    (void*)applescriptService->CreateTabAtIndexInWindow(index, mIndex);
  }
}

- (void)removeObjectFromScriptTabsAtIndex:(NSUInteger)index {
  NSArray *tabs = [self scriptTabs];
  if (tabs && index < [tabs count]) {
    NSCloseCommand *closeCommend = [[[NSCloseCommand alloc] init] autorelease];
    [(GeckoTab*)[tabs objectAtIndex:index] handleCloseScriptCommand:closeCommend];
  }
}

@end

#pragma mark -

@implementation GeckoTab

+ (id)tabWithIndex:(NSUInteger)index andContentWindow:(nsIDOMWindow*)contentWindow andWindow:(GeckoWindow*)window {
  return [[[self alloc] initWithIndex:index andContentWindow:contentWindow andWindow:window] autorelease];
}

- (id)initWithIndex:(NSUInteger)index andContentWindow:(nsIDOMWindow*)contentWindow andWindow:(GeckoWindow*)window {
  self = [super init];
  
  if (self) {
    mIndex = index;
    mWindow = [window retain];
    mContentWindow = contentWindow;
  }
  
  return self;
}

- (void)dealloc {
  [mWindow release];
  [super dealloc];
}

- (void)_setWindow:(GeckoWindow*)window {
  if (mWindow) {
    [mWindow release];
  }
  
  mWindow = nil;
  
  if (window) {
    mWindow = [window retain];
  }
}

- (void)_setIndex:(NSUInteger)index {
  mIndex = index;
}

- (NSScriptObjectSpecifier*)objectSpecifier
{
  if (!mWindow) {
    return nil;
  }
  NSScriptObjectSpecifier *objectSpecifier = [[NSIndexSpecifier alloc] initWithContainerClassDescription:[NSScriptClassDescription classDescriptionForClass:[mWindow class]]
                                                                                      containerSpecifier:[mWindow objectSpecifier]
                                                                                                     key:@"scriptTabs"
                                                                                                   index:[self orderedIndex]];
  return [objectSpecifier autorelease];
}

- (NSString*)title
{
  NS_WARNING("AppleScript: tab title");
  nsCOMPtr<nsPIDOMWindow> piWindow = do_QueryInterface(mContentWindow);
  if (!piWindow)
    return @"";
  nsCOMPtr<nsIDocument> pdoc = piWindow->GetDoc();
  if (!pdoc)
    return @"";
  nsCOMPtr<nsIPresShell> p = pdoc->GetShell();
  if (!p)
    return @"";
  nsIDocument* doc = p->GetDocument();
  if (doc) {
    nsCOMPtr<nsIDOMHTMLDocument> htmlDocument(do_QueryInterface(doc));
    if (htmlDocument) {
      nsAutoString title;
      if (NS_SUCCEEDED(htmlDocument->GetTitle(title))) {
        return [NSString stringWithUTF8String:NS_ConvertUTF16toUTF8(title).get()];
      }
    }
  }
  return @"";
}

- (NSString*)URL {
#if(0)
  nsCOMPtr<nsIDOMWindowInternal> contentWinInternal(do_QueryInterface(mContentWindow));
  if (contentWinInternal) {
    nsCOMPtr<nsIDOMLocation> domLoc;
    if (NS_SUCCEEDED(contentWinInternal->GetLocation(getter_AddRefs(domLoc))) && domLoc) {
      nsAutoString url;
      if (NS_SUCCEEDED(domLoc->ToString(url))) {
        return [NSString stringWithUTF8String:NS_ConvertUTF16toUTF8(url).get()];
      }
    }
  }
#endif
  return @"";
}

- (void)setURL:(NSString*)newURL {
#if(0)
  nsCOMPtr<nsIDOMWindowInternal> contentWinInternal(do_QueryInterface(mContentWindow));
  if (!contentWinInternal) {
    return;
  }
  nsCOMPtr<nsIDOMLocation> domLoc;
  if (!NS_SUCCEEDED(contentWinInternal->GetLocation(getter_AddRefs(domLoc))) || !domLoc) {
    return;
  }
  nsAutoString url;
  if (NS_SUCCEEDED(domLoc->ToString(url))) {
    nsCAutoString geckoURL;
    geckoURL.Assign([newURL UTF8String]);
    domLoc->Assign(NS_ConvertUTF8toUTF16(geckoURL));
  }
#endif
}

- (NSString*)source {
#if(0)
  nsCOMPtr<nsIDOMDocument> document;
  if (NS_SUCCEEDED(mContentWindow->GetDocument(getter_AddRefs(document))) && document) {
    nsCOMPtr<nsIDOMSerializer> serializer(do_CreateInstance(NS_XMLSERIALIZER_CONTRACTID));
    if (serializer) {
      nsAutoString source;
      if (NS_SUCCEEDED(serializer->SerializeToString(document, source))) {
        return [NSString stringWithUTF8String:NS_ConvertUTF16toUTF8(source).get()];
      }
    }
  }
#endif
  return @"";
}

- (NSString*)text {
#if(0)
  nsCOMPtr<nsIDOMDocument> document;
  if (NS_SUCCEEDED(mContentWindow->GetDocument(getter_AddRefs(document))) && document) {
    nsresult rv = NS_OK;
    
    nsCAutoString formatType(NS_DOC_ENCODER_CONTRACTID_BASE);
    formatType.Append("text/plain");
    
    nsCOMPtr<nsIDocumentEncoder> encoder(do_CreateInstance(formatType.get(), &rv));
    if (NS_SUCCEEDED(rv) && encoder) {
      PRUint32 flags = nsIDocumentEncoder::SkipInvisibleContent;
      nsAutoString readstring;
      readstring.AssignASCII("text/plain");
      
      if (NS_SUCCEEDED(encoder->Init(document, readstring, flags))) {
        nsAutoString text;
        if (NS_SUCCEEDED(encoder->EncodeToString(text))) {
          return [NSString stringWithUTF8String:NS_ConvertUTF16toUTF8(text).get()];
        }
      }
    }
  }
#endif
  return @"";
}

- (NSString*)selectedText {
#if(0)
  nsCOMPtr<nsISelection> selection;
  if (NS_SUCCEEDED(mContentWindow->GetSelection(getter_AddRefs(selection))) && selection) {
    nsXPIDLString selectedTextChars;
    if (NS_SUCCEEDED(selection->ToString(getter_Copies(selectedTextChars)))) {
      nsAutoString selectedText(selectedTextChars);
      return [NSString stringWithUTF8String:NS_ConvertUTF16toUTF8(selectedText).get()];
    }
  }
#endif
  return @"";
}

- (NSUInteger)orderedIndex {
  return mIndex; 
}

- (id)handleCloseScriptCommand:(NSCloseCommand*)command {
  nsCOMPtr<nsIApplescriptService> applescriptService(do_GetService("@mozilla.org/applescript-service;1"));
  if (applescriptService) {
    (void*)applescriptService->CloseTabAtIndexInWindow(mIndex, [mWindow orderedIndex]);
  }
  return nil;
}

@end

#pragma mark -

@implementation GeckoQuit

- (id)performDefaultImplementation {
  NS_WARNING("AppleScript: quit");
  nsCOMPtr<nsIAppStartup> appStartup = do_GetService(NS_APPSTARTUP_CONTRACTID);
  if (appStartup) {
    appStartup->Quit(nsIAppStartup::eAttemptQuit);
  }
  return nil;
}

@end