CreateLinkTile.tsx

/*
Copyright 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, { useEffect, useRef } from 'react';
import { Formik, Form } from 'formik';

import Tile from './Tile';
import Button from './Button';
import Input from './Input';
import { parseHash } from '../parser/parser';
import { LinkKind } from '../parser/types';
import linkIcon from '../imgs/link.svg';
import copyIcon from '../imgs/copy.svg';
import tickIcon from '../imgs/tick.svg';
import refreshIcon from '../imgs/refresh.svg';
import './CreateLinkTile.scss';

interface ILinkNotCreatedTileProps {
    setLink: React.Dispatch<React.SetStateAction<string>>;
}

interface FormValues {
    identifier: string;
}

// Hacky use of types here
function validate(values: FormValues): Partial<FormValues> {
    const errors: Partial<FormValues> = {};

    if (values.identifier === '') {
        errors.identifier = '';
        return errors;
    }

    const parse = parseHash(values.identifier);

    if (parse.kind === LinkKind.ParseFailed) {
        errors.identifier =
            "That identifier doesn't look right. Double check the details.";
    }

    return errors;
}

const LinkNotCreatedTile: React.FC<ILinkNotCreatedTileProps> = (
    props: ILinkNotCreatedTileProps
) => {
    return (
        <Tile className="createLinkTile">
            <h1>
                Create shareable links to Matrix rooms, users or messages
                without being tied to any app
            </h1>
            <Formik
                initialValues={{
                    identifier: '',
                }}
                validate={validate}
                onSubmit={(values): void => {
                    props.setLink(
                        document.location.protocol +
                            '//' +
                            document.location.host +
                            '/#/' +
                            values.identifier
                    );
                }}
            >
                {(formik): JSX.Element => (
                    <Form>
                        <Input
                            name={'identifier'}
                            type={'text'}
                            placeholder="#room:example.com, @user:example.com"
                            autoFocus
                        />
                        <Button
                            type="submit"
                            icon={linkIcon}
                            disabled={!!formik.errors.identifier}
                            className={
                                formik.errors.identifier ? 'errorButton' : ''
                            }
                        >
                            Create Link
                        </Button>
                    </Form>
                )}
            </Formik>
        </Tile>
    );
};

interface ILinkCreatedTileProps {
    link: string;
    setLink: React.Dispatch<React.SetStateAction<string>>;
}

const LinkCreatedTile: React.FC<ILinkCreatedTileProps> = (props) => {
    const buttonRef = useRef<HTMLButtonElement>(null);

    // Focus button on render
    useEffect((): void => {
        if (buttonRef && buttonRef.current) {
            buttonRef.current.focus();
        }
    });

    return (
        <Tile className="createLinkTile">
            <button
                className="createLinkReset"
                onClick={(): void => props.setLink('')}
            >
                <div>New link</div>
                <img src={refreshIcon} alt="Go back to matrix.to home page" />
            </button>
            <a className="matrixIdentifier" href={props.link}>
                {props.link}
            </a>
            <Button
                flashChildren={'Copied'}
                icon={copyIcon}
                flashIcon={tickIcon}
                onClick={(): void => {
                    navigator.clipboard?.writeText(props.link);
                }}
                ref={buttonRef}
            >
                Copy Link
            </Button>
        </Tile>
    );
};

const CreateLinkTile: React.FC = () => {
    const [link, setLink] = React.useState('');
    if (!link) {
        return <LinkNotCreatedTile setLink={setLink} />;
    } else {
        return <LinkCreatedTile link={link} setLink={setLink} />;
    }
};

export default CreateLinkTile;