import React from 'react';
import PropTypes from 'prop-types';
import classNames from 'classnames';
import ReactMDLButton from 'react-mdl/lib/Button';
import ReactMDLFabButton from 'react-mdl/lib/FABButton';
import Tooltip from '../Tooltip/Tooltip';
import Icon from '../Icon/Icon';
import canonicalTooltips from '../Icon/canonicaltooltips.json';

/**
Read the [GUI spec about button usage](https://confluence.brox.de/display/ECCGMBH/GUI+Specifications#GUISpecifications-Buttons).

```js
import {Button} from '@eccenca/gui-elements';

const Page = React.createClass({
    // template rendering
    render() {
        return (
            <Button>
                Flat button
            </Button>

            // use the button parameters according to MDL-API, @see https://getmdl.io/components/index.html#buttons-section
            <Button
                raised
                accent
                colored
                ripple
                disabled
                badge="5"
            >
                Button label
            </Button>

            // you can apply all other button properties on icon buttons, too (e.g. affirmative, accent, ripple, ...)
            <Button
                iconName="menu_more"
                tooltip="This is a Test!"
                fabSize="mini"
            />
        )
    },
    // ....
});
```
*/

const Button = props => {
    /* TODO:

    * add label/content as tooltip for icon/fab buttons
    * add label as tooltip if children content is available

    */

    const {
        badge,
        className,
        fabSize,
        iconName,
        affirmative,
        dismissive,
        disruptive,
        tooltip: defaultTooltip,
        children: defaultChildren,
        ripple: defaultRipple,
        ...otherProps
    } = props;

    const semanticConfig = {};

    if (affirmative === true) {
        semanticConfig.accent = true;
        semanticConfig.colored = false;
    }

    if (dismissive === true || disruptive === true) {
        semanticConfig.accent = false;
        semanticConfig.colored = false;
    }

    const classes = classNames(
        {
            'mdl-button--icon': typeof iconName !== 'undefined',
            'mdl-button--danger': disruptive === true,
            'mdl-badge mdl-badge--overlap': typeof badge !== 'undefined',
        },
        className
    );
    const ripple = defaultRipple === true; // disable ripple by default

    let tooltip = defaultTooltip;
    // if tooltip is empty check for default one
    if (
        !tooltip
        && tooltip !== false
        && typeof canonicalTooltips[iconName] !== 'undefined'
    ) {
        tooltip = canonicalTooltips[iconName];
    }

    let button = '';
    let buttonContent = defaultChildren;
    if (iconName) {
        buttonContent = (
            // if tooltip already exist send 'false' to prevent adding additional default tooltip in <Icon/>
            <Icon
                name={iconName}
                tooltip={tooltip || tooltip === false ? false : ''}
                badge={badge || false}
            />
        );
    }

    if (badge && !iconName) {
        otherProps['data-badge'] = badge;
    }

    if (fabSize) {
        button = (
            <ReactMDLFabButton
                className={classes}
                ripple={ripple}
                mini={fabSize === 'mini'}
                {...otherProps}
                {...semanticConfig}
            >
                {buttonContent}
            </ReactMDLFabButton>
        );
    } else {
        button = (
            <ReactMDLButton
                className={classes}
                ripple={ripple}
                {...otherProps}
                {...semanticConfig}
            >
                {buttonContent}
            </ReactMDLButton>
        );
    }

    if (tooltip && !props.disabled) {
        button = <Tooltip label={tooltip}>{button}</Tooltip>;
    }

    return button;
};

Button.propTypes = {
    children: PropTypes.oneOfType([PropTypes.node]),
    /**
        string (optional): use badge if the (icon) button need to be enhanced by
        a small badge containing 1 to 3 chars or digits
    */
    badge: PropTypes.string,
    /**
        string (optional): additional CSS class name
    */
    className: PropTypes.string,
    /**
        boolean (default: false): button is disabled and cannot get used to trigger an action
    */
    disabled: PropTypes.bool,
    /**
        string 'mini|large' (optional): use fabSize only if it is a Material Design floating action button (FAB)
    */
    fabSize: PropTypes.string,
    /**
        string (optional): icon name if it is an Material Design icon button

        We defined some canonical names for icons and their meanings:

        - 'edit': edit data
        - 'remove': remove data
        - 'arrow_nextpage': go to next page
        - 'arrow_prevpage': go to previous page
        - 'arrow_lastpage': go to last page
        - 'arrow_firstpage': go to first page
        - 'arrow_dropdown': open dropdown select
        - 'expand_more': expand GUI element to show more details
        - 'expand_less': reduce GUI element to show less details
        - 'menu_more': open context menu
        - 'filter': filter data
        - 'sort': sort data
        - 'hide': hide (or close/remove) GUI elements
        - 'access_forbidden': no access to read and write data

        For other symbols and icon names @see https://material.io/icons/
    */
    iconName: PropTypes.string,
    /**
        boolean (default: false): activate ripple effect on button
    */
    ripple: PropTypes.bool,
    /**
        React node or boolean (optional): tooltip text, some icons have fallback
        tooltips, set it to false if you need to prevent them
    */
    tooltip: PropTypes.oneOfType([
        PropTypes.node,
        PropTypes.bool,
    ]),

    // internal properties, used by button sub types

    affirmative: PropTypes.bool,
    dismissive: PropTypes.bool,
    disruptive: PropTypes.bool,
};

Button.displayName = 'Button';

export default Button;