var
	_ = require('_'),
	ko = require('ko'),

	Enums = require('Common/Enums'),
	Consts = require('Common/Consts'),
	Utils = require('Common/Utils'),
	Translator = require('Common/Translator'),

	FolderStore = require('Stores/User/Folder'),

	Settings = require('Storage/Settings'),
	Remote = require('Remote/User/Ajax'),

	kn = require('Knoin/Knoin'),
	AbstractView = require('Knoin/AbstractView');

/**
 * @constructor
 * @extends AbstractView
 */
function FolderSystemPopupView()
{
	AbstractView.call(this, 'Popups', 'PopupsFolderSystem');

	Translator.initOnStartOrLangChange(_.bind(function() {
		this.sChooseOnText = Translator.i18n('POPUPS_SYSTEM_FOLDERS/SELECT_CHOOSE_ONE');
		this.sUnuseText = Translator.i18n('POPUPS_SYSTEM_FOLDERS/SELECT_UNUSE_NAME');
	}, this));

	this.notification = ko.observable('');

	this.folderSelectList = ko.computed(function() {
		return Utils.folderListOptionsBuilder([], FolderStore.folderList(), FolderStore.folderListSystemNames(), [
			['', this.sChooseOnText],
			[Consts.UNUSED_OPTION_VALUE, this.sUnuseText]
		], null, null, null, null, null, true);
	}, this);

	var
		fSaveSystemFolders = null,
		fCallback = null;

	this.sentFolder = FolderStore.sentFolder;
	this.draftFolder = FolderStore.draftFolder;
	this.spamFolder = FolderStore.spamFolder;
	this.trashFolder = FolderStore.trashFolder;
	this.archiveFolder = FolderStore.archiveFolder;

	fSaveSystemFolders = _.debounce(function() {

		Settings.settingsSet('SentFolder', FolderStore.sentFolder());
		Settings.settingsSet('DraftFolder', FolderStore.draftFolder());
		Settings.settingsSet('SpamFolder', FolderStore.spamFolder());
		Settings.settingsSet('TrashFolder', FolderStore.trashFolder());
		Settings.settingsSet('ArchiveFolder', FolderStore.archiveFolder());

		Remote.saveSystemFolders(Utils.noop, {
			'SentFolder': FolderStore.sentFolder(),
			'DraftFolder': FolderStore.draftFolder(),
			'SpamFolder': FolderStore.spamFolder(),
			'TrashFolder': FolderStore.trashFolder(),
			'ArchiveFolder': FolderStore.archiveFolder(),
			'NullFolder': 'NullFolder'
		});

	}, Enums.Magics.Time1s);

	fCallback = function() {

		Settings.settingsSet('SentFolder', FolderStore.sentFolder());
		Settings.settingsSet('DraftFolder', FolderStore.draftFolder());
		Settings.settingsSet('SpamFolder', FolderStore.spamFolder());
		Settings.settingsSet('TrashFolder', FolderStore.trashFolder());
		Settings.settingsSet('ArchiveFolder', FolderStore.archiveFolder());

		fSaveSystemFolders();
	};

	FolderStore.sentFolder.subscribe(fCallback);
	FolderStore.draftFolder.subscribe(fCallback);
	FolderStore.spamFolder.subscribe(fCallback);
	FolderStore.trashFolder.subscribe(fCallback);
	FolderStore.archiveFolder.subscribe(fCallback);

	this.defautOptionsAfterRender = Utils.defautOptionsAfterRender;

	kn.constructorEnd(this);
}

kn.extendAsViewModel(['View/Popup/FolderSystem', 'PopupsFolderSystemViewModel'], FolderSystemPopupView);
_.extend(FolderSystemPopupView.prototype, AbstractView.prototype);

FolderSystemPopupView.prototype.sChooseOnText = '';
FolderSystemPopupView.prototype.sUnuseText = '';

/**
 * @param {number=} iNotificationType = Enums.SetSystemFoldersNotification.None
 */
FolderSystemPopupView.prototype.onShow = function(iNotificationType)
{
	var sNotification = '';

	iNotificationType = Utils.isUnd(iNotificationType) ? Enums.SetSystemFoldersNotification.None : iNotificationType;

	switch (iNotificationType)
	{
		case Enums.SetSystemFoldersNotification.Sent:
			sNotification = Translator.i18n('POPUPS_SYSTEM_FOLDERS/NOTIFICATION_SENT');
			break;
		case Enums.SetSystemFoldersNotification.Draft:
			sNotification = Translator.i18n('POPUPS_SYSTEM_FOLDERS/NOTIFICATION_DRAFTS');
			break;
		case Enums.SetSystemFoldersNotification.Spam:
			sNotification = Translator.i18n('POPUPS_SYSTEM_FOLDERS/NOTIFICATION_SPAM');
			break;
		case Enums.SetSystemFoldersNotification.Trash:
			sNotification = Translator.i18n('POPUPS_SYSTEM_FOLDERS/NOTIFICATION_TRASH');
			break;
		case Enums.SetSystemFoldersNotification.Archive:
			sNotification = Translator.i18n('POPUPS_SYSTEM_FOLDERS/NOTIFICATION_ARCHIVE');
			break;
		// no default
	}

	this.notification(sNotification);
};

module.exports = FolderSystemPopupView;