// Copyright (c) 2013 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.

#include "atom/browser/browser.h"

#include "atom/browser/mac/atom_application.h"
#include "atom/browser/mac/atom_application_delegate.h"
#include "atom/browser/mac/dict_util.h"
#include "atom/browser/native_window.h"
#include "atom/browser/window_list.h"
#include "atom/common/application_info.h"
#include "atom/common/platform_util.h"
#include "base/mac/bundle_locations.h"
#include "base/mac/foundation_util.h"
#include "base/mac/mac_util.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/sys_string_conversions.h"
#include "net/base/mac/url_conversions.h"
#include "ui/gfx/image/image.h"
#include "url/gurl.h"

namespace atom {

void Browser::SetShutdownHandler(base::Callback<bool()> handler) {
  [[AtomApplication sharedApplication] setShutdownHandler:std::move(handler)];
}

void Browser::Focus() {
  [[AtomApplication sharedApplication] activateIgnoringOtherApps:YES];
}

void Browser::Hide() {
  [[AtomApplication sharedApplication] hide:nil];
}

void Browser::Show() {
  [[AtomApplication sharedApplication] unhide:nil];
}

void Browser::AddRecentDocument(const base::FilePath& path) {
  NSString* path_string = base::mac::FilePathToNSString(path);
  if (!path_string)
    return;
  NSURL* u = [NSURL fileURLWithPath:path_string];
  if (!u)
    return;
  [[NSDocumentController sharedDocumentController] noteNewRecentDocumentURL:u];
}

void Browser::ClearRecentDocuments() {
  [[NSDocumentController sharedDocumentController] clearRecentDocuments:nil];
}

bool Browser::RemoveAsDefaultProtocolClient(const std::string& protocol,
                                            mate::Arguments* args) {
  NSString* identifier = [base::mac::MainBundle() bundleIdentifier];
  if (!identifier)
    return false;

  if (!Browser::IsDefaultProtocolClient(protocol, args))
    return false;

  NSString* protocol_ns = [NSString stringWithUTF8String:protocol.c_str()];
  CFStringRef protocol_cf = base::mac::NSToCFCast(protocol_ns);
  CFArrayRef bundleList = LSCopyAllHandlersForURLScheme(protocol_cf);
  if (!bundleList) {
    return false;
  }
  // On macOS, we can't query the default, but the handlers list seems to put
  // Apple's defaults first, so we'll use the first option that isn't our bundle
  CFStringRef other = nil;
  for (CFIndex i = 0; i < CFArrayGetCount(bundleList); ++i) {
    other =
        base::mac::CFCast<CFStringRef>(CFArrayGetValueAtIndex(bundleList, i));
    if (![identifier isEqualToString:(__bridge NSString*)other]) {
      break;
    }
  }

  // No other app was found set it to none instead of setting it back to itself.
  if ([identifier isEqualToString:(__bridge NSString*)other]) {
    other = base::mac::NSToCFCast(@"None");
  }

  OSStatus return_code = LSSetDefaultHandlerForURLScheme(protocol_cf, other);
  return return_code == noErr;
}

bool Browser::SetAsDefaultProtocolClient(const std::string& protocol,
                                         mate::Arguments* args) {
  if (protocol.empty())
    return false;

  NSString* identifier = [base::mac::MainBundle() bundleIdentifier];
  if (!identifier)
    return false;

  NSString* protocol_ns = [NSString stringWithUTF8String:protocol.c_str()];
  OSStatus return_code = LSSetDefaultHandlerForURLScheme(
      base::mac::NSToCFCast(protocol_ns), base::mac::NSToCFCast(identifier));
  return return_code == noErr;
}

bool Browser::IsDefaultProtocolClient(const std::string& protocol,
                                      mate::Arguments* args) {
  if (protocol.empty())
    return false;

  NSString* identifier = [base::mac::MainBundle() bundleIdentifier];
  if (!identifier)
    return false;

  NSString* protocol_ns = [NSString stringWithUTF8String:protocol.c_str()];

  CFStringRef bundle =
      LSCopyDefaultHandlerForURLScheme(base::mac::NSToCFCast(protocol_ns));
  NSString* bundleId =
      static_cast<NSString*>(base::mac::CFTypeRefToNSObjectAutorelease(bundle));
  if (!bundleId)
    return false;

  // Ensure the comparison is case-insensitive
  // as LS does not persist the case of the bundle id.
  NSComparisonResult result = [bundleId caseInsensitiveCompare:identifier];
  return result == NSOrderedSame;
}

void Browser::SetAppUserModelID(const base::string16& name) {}

bool Browser::SetBadgeCount(int count) {
  DockSetBadgeText(count != 0 ? base::IntToString(count) : "");
  badge_count_ = count;
  return true;
}

void Browser::SetUserActivity(const std::string& type,
                              const base::DictionaryValue& user_info,
                              mate::Arguments* args) {
  std::string url_string;
  args->GetNext(&url_string);

  [[AtomApplication sharedApplication]
      setCurrentActivity:base::SysUTF8ToNSString(type)
            withUserInfo:DictionaryValueToNSDictionary(user_info)
          withWebpageURL:net::NSURLWithGURL(GURL(url_string))];
}

std::string Browser::GetCurrentActivityType() {
  if (@available(macOS 10.10, *)) {
    NSUserActivity* userActivity =
        [[AtomApplication sharedApplication] getCurrentActivity];
    return base::SysNSStringToUTF8(userActivity.activityType);
  } else {
    return std::string();
  }
}

void Browser::InvalidateCurrentActivity() {
  [[AtomApplication sharedApplication] invalidateCurrentActivity];
}

void Browser::UpdateCurrentActivity(const std::string& type,
                                    const base::DictionaryValue& user_info) {
  [[AtomApplication sharedApplication]
      updateCurrentActivity:base::SysUTF8ToNSString(type)
               withUserInfo:DictionaryValueToNSDictionary(user_info)];
}

bool Browser::WillContinueUserActivity(const std::string& type) {
  bool prevent_default = false;
  for (BrowserObserver& observer : observers_)
    observer.OnWillContinueUserActivity(&prevent_default, type);
  return prevent_default;
}

void Browser::DidFailToContinueUserActivity(const std::string& type,
                                            const std::string& error) {
  for (BrowserObserver& observer : observers_)
    observer.OnDidFailToContinueUserActivity(type, error);
}

bool Browser::ContinueUserActivity(const std::string& type,
                                   const base::DictionaryValue& user_info) {
  bool prevent_default = false;
  for (BrowserObserver& observer : observers_)
    observer.OnContinueUserActivity(&prevent_default, type, user_info);
  return prevent_default;
}

void Browser::UserActivityWasContinued(const std::string& type,
                                       const base::DictionaryValue& user_info) {
  for (BrowserObserver& observer : observers_)
    observer.OnUserActivityWasContinued(type, user_info);
}

bool Browser::UpdateUserActivityState(const std::string& type,
                                      const base::DictionaryValue& user_info) {
  bool prevent_default = false;
  for (BrowserObserver& observer : observers_)
    observer.OnUpdateUserActivityState(&prevent_default, type, user_info);
  return prevent_default;
}

Browser::LoginItemSettings Browser::GetLoginItemSettings(
    const LoginItemSettings& options) {
  LoginItemSettings settings;
#if defined(MAS_BUILD)
  settings.open_at_login = platform_util::GetLoginItemEnabled();
#else
  settings.open_at_login =
      base::mac::CheckLoginItemStatus(&settings.open_as_hidden);
  settings.restore_state = base::mac::WasLaunchedAsLoginItemRestoreState();
  settings.opened_at_login = base::mac::WasLaunchedAsLoginOrResumeItem();
  settings.opened_as_hidden = base::mac::WasLaunchedAsHiddenLoginItem();
#endif
  return settings;
}

// copied from GetLoginItemForApp in base/mac/mac_util.mm
LSSharedFileListItemRef GetLoginItemForApp() {
  base::ScopedCFTypeRef<LSSharedFileListRef> login_items(
      LSSharedFileListCreate(NULL, kLSSharedFileListSessionLoginItems, NULL));
  if (!login_items.get()) {
    LOG(ERROR) << "Couldn't get a Login Items list.";
    return NULL;
  }
  base::scoped_nsobject<NSArray> login_items_array(
      base::mac::CFToNSCast(LSSharedFileListCopySnapshot(login_items, NULL)));
  NSURL* url = [NSURL fileURLWithPath:[base::mac::MainBundle() bundlePath]];
  for (NSUInteger i = 0; i < [login_items_array count]; ++i) {
    LSSharedFileListItemRef item =
        reinterpret_cast<LSSharedFileListItemRef>(login_items_array[i]);
    CFURLRef item_url_ref = NULL;
    if (LSSharedFileListItemResolve(item, 0, &item_url_ref, NULL) == noErr &&
        item_url_ref) {
      base::ScopedCFTypeRef<CFURLRef> item_url(item_url_ref);
      if (CFEqual(item_url, url)) {
        CFRetain(item);
        return item;
      }
    }
  }
  return NULL;
}

void RemoveFromLoginItems() {
  base::ScopedCFTypeRef<LSSharedFileListRef> list(
      LSSharedFileListCreate(NULL, kLSSharedFileListSessionLoginItems, NULL));
  if (!list) {
    LOG(ERROR) << "Unable to access shared file list";
    return;
  }

  if (GetLoginItemForApp() != NULL) {
    base::scoped_nsobject<NSArray> login_items_array(
        base::mac::CFToNSCast(LSSharedFileListCopySnapshot(list, NULL)));

    if (!login_items_array) {
      LOG(ERROR) << "No items in list of auto-loaded apps";
      return;
    }

    for (NSUInteger i = 0; i < [login_items_array count]; ++i) {
      LSSharedFileListItemRef item =
          reinterpret_cast<LSSharedFileListItemRef>(login_items_array[i]);
      CFURLRef url_ref = NULL;
      if (LSSharedFileListItemResolve(item, 0, &url_ref, NULL) == noErr &&
          item) {
        base::ScopedCFTypeRef<CFURLRef> url(url_ref);
        if ([[base::mac::CFToNSCast(url.get()) path]
                hasPrefix:[[NSBundle mainBundle] bundlePath]])
          LSSharedFileListItemRemove(list, item);
      }
    }
  }
}

void Browser::SetLoginItemSettings(LoginItemSettings settings) {
#if defined(MAS_BUILD)
  platform_util::SetLoginItemEnabled(settings.open_at_login);
#else
  if (settings.open_at_login)
    base::mac::AddToLoginItems(settings.open_as_hidden);
  else {
    RemoveFromLoginItems();
  }
#endif
}

std::string Browser::GetExecutableFileVersion() const {
  return GetApplicationVersion();
}

std::string Browser::GetExecutableFileProductName() const {
  return GetApplicationName();
}

int Browser::DockBounce(BounceType type) {
  return [[AtomApplication sharedApplication]
      requestUserAttention:static_cast<NSRequestUserAttentionType>(type)];
}

void Browser::DockCancelBounce(int request_id) {
  [[AtomApplication sharedApplication] cancelUserAttentionRequest:request_id];
}

void Browser::DockSetBadgeText(const std::string& label) {
  NSDockTile* tile = [[AtomApplication sharedApplication] dockTile];
  [tile setBadgeLabel:base::SysUTF8ToNSString(label)];
}

void Browser::DockDownloadFinished(const std::string& filePath) {
  [[NSDistributedNotificationCenter defaultCenter]
      postNotificationName:@"com.apple.DownloadFileFinished"
                    object:base::SysUTF8ToNSString(filePath)];
}

std::string Browser::DockGetBadgeText() {
  NSDockTile* tile = [[AtomApplication sharedApplication] dockTile];
  return base::SysNSStringToUTF8([tile badgeLabel]);
}

void Browser::DockHide() {
  for (auto* const& window : WindowList::GetWindows())
    [window->GetNativeWindow() setCanHide:NO];

  ProcessSerialNumber psn = {0, kCurrentProcess};
  TransformProcessType(&psn, kProcessTransformToUIElementApplication);
}

bool Browser::DockIsVisible() {
  // Because DockShow has a slight delay this may not be true immediately
  // after that call.
  return ([[NSRunningApplication currentApplication] activationPolicy] ==
          NSApplicationActivationPolicyRegular);
}

void Browser::DockShow() {
  BOOL active = [[NSRunningApplication currentApplication] isActive];
  ProcessSerialNumber psn = {0, kCurrentProcess};
  if (active) {
    // Workaround buggy behavior of TransformProcessType.
    // http://stackoverflow.com/questions/7596643/
    NSArray* runningApps = [NSRunningApplication
        runningApplicationsWithBundleIdentifier:@"com.apple.dock"];
    for (NSRunningApplication* app in runningApps) {
      [app activateWithOptions:NSApplicationActivateIgnoringOtherApps];
      break;
    }
    dispatch_time_t one_ms = dispatch_time(DISPATCH_TIME_NOW, USEC_PER_SEC);
    dispatch_after(one_ms, dispatch_get_main_queue(), ^{
      TransformProcessType(&psn, kProcessTransformToForegroundApplication);
      dispatch_time_t one_ms = dispatch_time(DISPATCH_TIME_NOW, USEC_PER_SEC);
      dispatch_after(one_ms, dispatch_get_main_queue(), ^{
        [[NSRunningApplication currentApplication]
            activateWithOptions:NSApplicationActivateIgnoringOtherApps];
      });
    });
  } else {
    TransformProcessType(&psn, kProcessTransformToForegroundApplication);
  }
}

void Browser::DockSetMenu(AtomMenuModel* model) {
  AtomApplicationDelegate* delegate =
      (AtomApplicationDelegate*)[NSApp delegate];
  [delegate setApplicationDockMenu:model];
}

void Browser::DockSetIcon(const gfx::Image& image) {
  [[AtomApplication sharedApplication]
      setApplicationIconImage:image.AsNSImage()];
}

void Browser::ShowAboutPanel() {
  NSDictionary* options = DictionaryValueToNSDictionary(about_panel_options_);

  // Credits must be a NSAttributedString instead of NSString
  id credits = options[@"Credits"];
  if (credits != nil) {
    NSMutableDictionary* mutable_options = [options mutableCopy];
    mutable_options[@"Credits"] = [[[NSAttributedString alloc]
        initWithString:(NSString*)credits] autorelease];
    options = [NSDictionary dictionaryWithDictionary:mutable_options];
  }

  [[AtomApplication sharedApplication]
      orderFrontStandardAboutPanelWithOptions:options];
}

void Browser::SetAboutPanelOptions(const base::DictionaryValue& options) {
  about_panel_options_.Clear();

  for (const auto& pair : options) {
    std::string key = pair.first;
    const auto& val = pair.second;
    if (!key.empty() && val->is_string()) {
      key[0] = base::ToUpperASCII(key[0]);
      about_panel_options_.SetString(key, val->GetString());
    }
  }
}

}  // namespace atom