// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.

import React from 'react';

// accepts either a single error or an array of errors
type Props = {
    type?: React.ReactNode;
    error?: React.ReactNode;
    textClassName?: string;
    iconClassName?: string;
    margin?: boolean;
    errors?: React.ReactNode[];
}

export default class FormError extends React.PureComponent<Props> {
    public static defaultProps = {
        error: null,
        errors: [],
    };
    public render() {
        const {error = null, errors = [], iconClassName, margin, textClassName, type} = this.props;

        if (!error && errors.length === 0) {
            return null;
        }

        // look for the first truthy error to display
        let message = error;

        if (!message) {
            for (const err of errors) {
                if (err) {
                    message = err;
                }
            }
        }

        if (!message) {
            return null;
        }

        if (type === 'modal') {
            return (
                <div className='form-group'>
                    <label className='col-sm-12 has-error'>
                        {message}
                    </label>
                </div>
            );
        }

        if (type === 'backstage') {
            return (
                <div className='pull-left has-error'>
                    <label className='control-label'>
                        {message}
                    </label>
                </div>
            );
        }

        if (margin) {
            return (
                <div className='form-group has-error'>
                    <label className='control-label'>
                        {message}
                    </label>
                </div>
            );
        }

        return (
            <div className={`col-sm-12 ${textClassName || 'has-error'}`}>
                <label className='control-label'>
                    <i className={`fa ${iconClassName || 'fa-exclamation-circle'}`}/> {message}
                </label>
            </div>
        );
    }
}