text: import * as React from 'react';
  import PropTypes from 'prop-types';
  import clsx from 'clsx';
  import { withStyles, lighten, darken } from '@material-ui/core/styles';
  import Paper from '@material-ui/core/Paper';
  import SuccessOutlinedIcon from '../internal/svg-icons/SuccessOutlined';
  import ReportProblemOutlinedIcon from '../internal/svg-icons/ReportProblemOutlined';
  import ErrorOutlineIcon from '../internal/svg-icons/ErrorOutline';
  import InfoOutlinedIcon from '../internal/svg-icons/InfoOutlined';
  import CloseIcon from '../internal/svg-icons/Close';
  import IconButton from '@material-ui/core/IconButton';
  import { capitalize } from '@material-ui/core/utils';
  
  export const styles = (theme) => {
    const getColor = theme.palette.type === 'light' ? darken : lighten;
    const getBackgroundColor = theme.palette.type === 'light' ? lighten : darken;
  
    return {
      /* Styles applied to the root element. */
      root: {
        ...theme.typography.body2,
        borderRadius: theme.shape.borderRadius,
        backgroundColor: 'transparent',
        display: 'flex',
        padding: '6px 16px',
      },
      /* Styles applied to the root element if `variant="standard"` and `color="success"`. */
      standardSuccess: {
        color: getColor(theme.palette.success.main, 0.6),
        backgroundColor: getBackgroundColor(theme.palette.success.main, 0.9),
        '& $icon': {
          color: theme.palette.success.main,
        },
      },
      /* Styles applied to the root element if `variant="standard"` and `color="info"`. */
      standardInfo: {
        color: getColor(theme.palette.info.main, 0.6),
        backgroundColor: getBackgroundColor(theme.palette.info.main, 0.9),
        '& $icon': {
          color: theme.palette.info.main,
        },
      },
      /* Styles applied to the root element if `variant="standard"` and `color="warning"`. */
      standardWarning: {
        color: getColor(theme.palette.warning.main, 0.6),
        backgroundColor: getBackgroundColor(theme.palette.warning.main, 0.9),
        '& $icon': {
          color: theme.palette.warning.main,
        },
      },
      /* Styles applied to the root element if `variant="standard"` and `color="error"`. */
      standardError: {
        color: getColor(theme.palette.error.main, 0.6),
        backgroundColor: getBackgroundColor(theme.palette.error.main, 0.9),
        '& $icon': {
          color: theme.palette.error.main,
        },
      },
      /* Styles applied to the root element if `variant="outlined"` and `color="success"`. */
      outlinedSuccess: {
        color: getColor(theme.palette.success.main, 0.6),
        border: `1px solid ${theme.palette.success.main}`,
        '& $icon': {
          color: theme.palette.success.main,
        },
      },
      /* Styles applied to the root element if `variant="outlined"` and `color="info"`. */
      outlinedInfo: {
        color: getColor(theme.palette.info.main, 0.6),
        border: `1px solid ${theme.palette.info.main}`,
        '& $icon': {
          color: theme.palette.info.main,
        },
      },
      /* Styles applied to the root element if `variant="outlined"` and `color="warning"`. */
      outlinedWarning: {
        color: getColor(theme.palette.warning.main, 0.6),
        border: `1px solid ${theme.palette.warning.main}`,
        '& $icon': {
          color: theme.palette.warning.main,
        },
      },
      /* Styles applied to the root element if `variant="outlined"` and `color="error"`. */
      outlinedError: {
        color: getColor(theme.palette.error.main, 0.6),
        border: `1px solid ${theme.palette.error.main}`,
        '& $icon': {
          color: theme.palette.error.main,
        },
      },
      /* Styles applied to the root element if `variant="filled"` and `color="success"`. */
      filledSuccess: {
        color: '#fff',
        fontWeight: theme.typography.fontWeightMedium,
        backgroundColor: theme.palette.success.main,
      },
      /* Styles applied to the root element if `variant="filled"` and `color="info"`. */
      filledInfo: {
        color: '#fff',
        fontWeight: theme.typography.fontWeightMedium,
        backgroundColor: theme.palette.info.main,
      },
      /* Styles applied to the root element if `variant="filled"` and `color="warning"`. */
      filledWarning: {
        color: '#fff',
        fontWeight: theme.typography.fontWeightMedium,
        backgroundColor: theme.palette.warning.main,
      },
      /* Styles applied to the root element if `variant="filled"` and `color="error"`. */
      filledError: {
        color: '#fff',
        fontWeight: theme.typography.fontWeightMedium,
        backgroundColor: theme.palette.error.main,
      },
      /* Styles applied to the icon wrapper element. */
      icon: {
        marginRight: 12,
        padding: '7px 0',
        display: 'flex',
        fontSize: 22,
        opacity: 0.9,
      },
      /* Styles applied to the message wrapper element. */
      message: {
        padding: '8px 0',
      },
      /* Styles applied to the action wrapper element if `action` is provided. */
      action: {
        display: 'flex',
        alignItems: 'center',
        marginLeft: 'auto',
        paddingLeft: 16,
        marginRight: -8,
      },
    };
  };
  
  const defaultIconMapping = {
    success: <SuccessOutlinedIcon fontSize="inherit" />,
    warning: <ReportProblemOutlinedIcon fontSize="inherit" />,
    error: <ErrorOutlineIcon fontSize="inherit" />,
    info: <InfoOutlinedIcon fontSize="inherit" />,
  };
  
  const Alert = React.forwardRef(function Alert(props, ref) {
    const {
      action,
      children,
      classes,
      className,
      closeText = 'Close',
      color,
      icon,
      iconMapping = defaultIconMapping,
      onClose,
      role = 'alert',
      severity = 'success',
      variant = 'standard',
      ...other
    } = props;
  
    return (
      <Paper
        role={role}
        square
        elevation={0}
        className={clsx(
          classes.root,
          classes[`${variant}${capitalize(color || severity)}`],
          className,
        )}
        ref={ref}
        {...other}
      >
        {icon !== false ? (
          <div className={classes.icon}>
            {icon || iconMapping[severity] || defaultIconMapping[severity]}
          </div>
        ) : null}
        <div className={classes.message}>{children}</div>
        {action != null ? <div className={classes.action}>{action}</div> : null}
        {action == null && onClose ? (
          <div className={classes.action}>
            <IconButton
              size="small"
              aria-label={closeText}
              title={closeText}
              color="inherit"
              onClick={onClose}
            >
              <CloseIcon fontSize="small" />
            </IconButton>
          </div>
        ) : null}
      </Paper>
    );
  });
  
  Alert.propTypes = {
    // ----------------------------- Warning --------------------------------
    // | These PropTypes are generated from the TypeScript type definitions |
    // |     To update them edit the d.ts file and run "yarn proptypes"     |
    // ----------------------------------------------------------------------
    /**
     * The action to display. It renders after the message, at the end of the alert.
     */
    action: PropTypes.node,
    /**
     * The content of the component.
     */
    children: PropTypes.node,
    /**
     * Override or extend the styles applied to the component.
     * See [CSS API](#css) below for more details.
     */
    classes: PropTypes.object,
    /**
     * @ignore
     */
    className: PropTypes.string,
    /**
     * Override the default label for the *close popup* icon button.
     *
     * For localization purposes, you can use the provided [translations](/guides/localization/).
     */
    closeText: PropTypes.string,
    /**
     * The main color for the alert. Unless provided, the value is taken from the `severity` prop.
     */
    color: PropTypes.oneOf(['error', 'info', 'success', 'warning']),
    /**
     * Override the icon displayed before the children.
     * Unless provided, the icon is mapped to the value of the `severity` prop.
     */
    icon: PropTypes.node,
    /**
     * The component maps the `severity` prop to a range of different icons,
     * for instance success to `<SuccessOutlined>`.
     * If you wish to change this mapping, you can provide your own.
     * Alternatively, you can use the `icon` prop to override the icon displayed.
     */
    iconMapping: PropTypes.shape({
      error: PropTypes.node,
      info: PropTypes.node,
      success: PropTypes.node,
      warning: PropTypes.node,
    }),
    /**
     * Callback fired when the component requests to be closed.
     * When provided and no `action` prop is set, a close icon button is displayed that triggers the callback when clicked.
     *
     * @param {object} event The event source of the callback.
     */
    onClose: PropTypes.func,
    /**
     * The ARIA role attribute of the element.
     */
    role: PropTypes.string,
    /**
     * The severity of the alert. This defines the color and icon used.
     */
    severity: PropTypes.oneOf(['error', 'info', 'success', 'warning']),
    /**
     * The variant to use.
     */
    variant: PropTypes.oneOf(['filled', 'outlined', 'standard']),
  };
  
  export default withStyles(styles, { name: 'MuiAlert' })(Alert);
  