/*
Copyright 2018, 2019 New Vector Ltd
Copyright 2019, 2020 The Matrix.org Foundation C.I.C.

Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

import React from 'react';
import PropTypes from "prop-types";
import * as sdk from '../../../../index';
import {MatrixClientPeg} from '../../../../MatrixClientPeg';

import { _t } from '../../../../languageHandler';

/*
 * Access Secure Secret Storage by requesting the user's passphrase.
 */
export default class AccessSecretStorageDialog extends React.PureComponent {
    static propTypes = {
        // { passphrase, pubkey }
        keyInfo: PropTypes.object.isRequired,
        // Function from one of { passphrase, recoveryKey } -> boolean
        checkPrivateKey: PropTypes.func.isRequired,
    }

    constructor(props) {
        super(props);
        this.state = {
            recoveryKey: "",
            recoveryKeyValid: false,
            forceRecoveryKey: false,
            passPhrase: '',
            keyMatches: null,
        };
    }

    _onCancel = () => {
        this.props.onFinished(false);
    }

    _onUseRecoveryKeyClick = () => {
        this.setState({
            forceRecoveryKey: true,
        });
    }

    _onRecoveryKeyChange = (e) => {
        this.setState({
            recoveryKey: e.target.value,
            recoveryKeyValid: MatrixClientPeg.get().isValidRecoveryKey(e.target.value),
            keyMatches: null,
        });
    }

    _onPassPhraseNext = async (e) => {
        e.preventDefault();

        if (this.state.passPhrase.length <= 0) return;

        this.setState({ keyMatches: null });
        const input = { passphrase: this.state.passPhrase };
        const keyMatches = await this.props.checkPrivateKey(input);
        if (keyMatches) {
            this.props.onFinished(input);
        } else {
            this.setState({ keyMatches });
        }
    }

    _onRecoveryKeyNext = async (e) => {
        e.preventDefault();

        if (!this.state.recoveryKeyValid) return;

        this.setState({ keyMatches: null });
        const input = { recoveryKey: this.state.recoveryKey };
        const keyMatches = await this.props.checkPrivateKey(input);
        if (keyMatches) {
            this.props.onFinished(input);
        } else {
            this.setState({ keyMatches });
        }
    }

    _onPassPhraseChange = (e) => {
        this.setState({
            passPhrase: e.target.value,
            keyMatches: null,
        });
    }

    render() {
        const BaseDialog = sdk.getComponent('views.dialogs.BaseDialog');

        const hasPassphrase = (
            this.props.keyInfo &&
            this.props.keyInfo.passphrase &&
            this.props.keyInfo.passphrase.salt &&
            this.props.keyInfo.passphrase.iterations
        );

        let content;
        let title;
        let headerImage;
        if (hasPassphrase && !this.state.forceRecoveryKey) {
            const DialogButtons = sdk.getComponent('views.elements.DialogButtons');
            const AccessibleButton = sdk.getComponent('elements.AccessibleButton');
            title = _t("Security Phrase");
            headerImage = require("../../../../../res/img/feather-customised/secure-phrase.svg");

            let keyStatus;
            if (this.state.keyMatches === false) {
                keyStatus = <div className="mx_AccessSecretStorageDialog_keyStatus">
                    {"\uD83D\uDC4E "}{_t(
                        "Unable to access secret storage. " +
                        "Please verify that you entered the correct recovery passphrase.",
                    )}
                </div>;
            } else {
                keyStatus = <div className="mx_AccessSecretStorageDialog_keyStatus" />;
            }

            content = <div>
                <p>{_t(
                    "Enter your Security Phrase or <button>Use your Security Key</button> to continue.", {},
                    {
                        button: s => <AccessibleButton className="mx_linkButton"
                            element="span"
                            onClick={this._onUseRecoveryKeyClick}
                        >
                            {s}
                        </AccessibleButton>,
                    },
                )}</p>

                <form className="mx_AccessSecretStorageDialog_primaryContainer" onSubmit={this._onPassPhraseNext}>
                    <input
                        type="password"
                        className="mx_AccessSecretStorageDialog_passPhraseInput"
                        onChange={this._onPassPhraseChange}
                        value={this.state.passPhrase}
                        autoFocus={true}
                        autoComplete="new-password"
                        placeholder={_t("Security Phrase")}
                    />
                    {keyStatus}
                    <DialogButtons
                        primaryButton={_t('Continue')}
                        onPrimaryButtonClick={this._onPassPhraseNext}
                        hasCancel={true}
                        onCancel={this._onCancel}
                        focus={false}
                        primaryDisabled={this.state.passPhrase.length === 0}
                    />
                </form>
            </div>;
        } else {
            title = _t("Security Key");
            headerImage = require("../../../../../res/img/feather-customised/secure-backup.svg");
            const DialogButtons = sdk.getComponent('views.elements.DialogButtons');

            let keyStatus;
            if (this.state.recoveryKey.length === 0) {
                keyStatus = <div className="mx_AccessSecretStorageDialog_keyStatus" />;
            } else if (this.state.keyMatches === false) {
                keyStatus = <div className="mx_AccessSecretStorageDialog_keyStatus">
                    {"\uD83D\uDC4E "}{_t(
                        "Unable to access secret storage. " +
                        "Please verify that you entered the correct recovery key.",
                    )}
                </div>;
            } else if (this.state.recoveryKeyValid) {
                keyStatus = <div className="mx_AccessSecretStorageDialog_keyStatus">
                    {"\uD83D\uDC4D "}{_t("This looks like a valid recovery key!")}
                </div>;
            } else {
                keyStatus = <div className="mx_AccessSecretStorageDialog_keyStatus">
                    {"\uD83D\uDC4E "}{_t("Not a valid recovery key")}
                </div>;
            }

            content = <div>
                <p>{_t("Use your Security Key to continue.")}</p>

                <form className="mx_AccessSecretStorageDialog_primaryContainer" onSubmit={this._onRecoveryKeyNext}>
                    <input className="mx_AccessSecretStorageDialog_recoveryKeyInput"
                        onChange={this._onRecoveryKeyChange}
                        value={this.state.recoveryKey}
                        autoFocus={true}
                    />
                    {keyStatus}
                    <DialogButtons
                        primaryButton={_t('Continue')}
                        onPrimaryButtonClick={this._onRecoveryKeyNext}
                        hasCancel={true}
                        onCancel={this._onCancel}
                        focus={false}
                        primaryDisabled={!this.state.recoveryKeyValid}
                    />
                </form>
            </div>;
        }

        return (
            <BaseDialog className='mx_AccessSecretStorageDialog'
                headerImage={headerImage}
                onFinished={this.props.onFinished}
                title={title}
            >
            <div>
                {content}
            </div>
            </BaseDialog>
        );
    }
}