import _ from '_';
import ko from 'ko';

import {Magics} from 'Common/Enums';
import {trim, log, delegateRun, pInt} from 'Common/Utils';

import PgpStore from 'Stores/User/Pgp';

import {getApp} from 'Helper/Apps/User';

import {popup, command} from 'Knoin/Knoin';
import {AbstractViewNext} from 'Knoin/AbstractViewNext';

@popup({
	name: 'View/Popup/NewOpenPgpKey',
	templateID: 'PopupsNewOpenPgpKey'
})
class NewOpenPgpKeyPopupView extends AbstractViewNext
{
	constructor() {
		super();

		this.email = ko.observable('');
		this.email.focus = ko.observable('');
		this.email.error = ko.observable(false);

		this.name = ko.observable('');
		this.password = ko.observable('');
		this.keyBitLength = ko.observable(Magics.BitLength2048);

		this.submitRequest = ko.observable(false);
		this.submitError = ko.observable('');

		this.email.subscribe(() => {
			this.email.error(false);
		});
	}

	@command()
	generateOpenPgpKeyCommand() {

		const
			userId = {},
			openpgpKeyring = PgpStore.openpgpKeyring;

		this.email.error('' === trim(this.email()));
		if (!openpgpKeyring || this.email.error())
		{
			return false;
		}

		userId.email = this.email();
		if ('' !== this.name())
		{
			userId.name = this.name();
		}

		this.submitRequest(true);
		this.submitError('');

		_.delay(() => {

			try {

				PgpStore.openpgp.generateKey({
					userIds: [userId],
					numBits: pInt(this.keyBitLength()),
					passphrase: trim(this.password())
				}).then((keyPair) => {

					this.submitRequest(false);

					if (keyPair && keyPair.privateKeyArmored)
					{
						openpgpKeyring.privateKeys.importKey(keyPair.privateKeyArmored);
						openpgpKeyring.publicKeys.importKey(keyPair.publicKeyArmored);

						openpgpKeyring.store();

						getApp().reloadOpenPgpKeys();
						delegateRun(this, 'cancelCommand');
					}

				}).catch((e) => {
					this.submitRequest(false);
					this.showError(e);
				});
			}
			catch (e)
			{
				this.submitRequest(false);
				this.showError(e);
			}

		}, Magics.Time100ms);

		return true;
	}

	showError(e) {
		log(e);
		if (e && e.message)
		{
			this.submitError(e.message);
		}
	}

	clearPopup() {
		this.name('');
		this.password('');

		this.email('');
		this.email.error(false);
		this.keyBitLength(Magics.BitLength2048);

		this.submitError('');
	}

	onShow() {
		this.clearPopup();
	}

	onShowWithDelay() {
		this.email.focus(true);
	}
}

export {NewOpenPgpKeyPopupView, NewOpenPgpKeyPopupView as default};