import React from 'react';
import { connect } from 'react-redux';
import PropTypes from 'prop-types';
import { Field, reduxForm, formValueSelector } from 'redux-form';
import { Trans, withNamespaces } from 'react-i18next';
import flow from 'lodash/flow';

import Controls from './Controls';
import AddressList from './AddressList';
import renderField from './renderField';
import { getInterfaceIp } from '../../helpers/helpers';
import { ALL_INTERFACES_IP } from '../../helpers/constants';

const required = (value) => {
    if (value || value === 0) {
        return false;
    }
    return <Trans>form_error_required</Trans>;
};

const port = (value) => {
    if (value < 1 || value > 65535) {
        return <Trans>form_error_port</Trans>;
    }
    return false;
};

const toNumber = value => value && parseInt(value, 10);

const renderInterfaces = (interfaces => (
    Object.keys(interfaces).map((item) => {
        const option = interfaces[item];
        const { name } = option;

        if (option.ip_addresses && option.ip_addresses.length > 0) {
            const ip = getInterfaceIp(option);

            return (
                <option value={ip} key={name}>
                    {name} - {ip}
                </option>
            );
        }

        return false;
    })
));

let Settings = (props) => {
    const {
        handleSubmit,
        webIp,
        webPort,
        dnsIp,
        dnsPort,
        interfaces,
        invalid,
        webWarning,
        dnsWarning,
    } = props;

    return (
        <form className="setup__step" onSubmit={handleSubmit}>
            <div className="setup__group">
                <div className="setup__subtitle">
                    <Trans>install_settings_title</Trans>
                </div>
                <div className="row">
                    <div className="col-8">
                        <div className="form-group">
                            <label>
                                <Trans>install_settings_listen</Trans>
                            </label>
                            <Field
                                name="web.ip"
                                component="select"
                                className="form-control custom-select"
                            >
                                <option value={ALL_INTERFACES_IP}>
                                    <Trans>install_settings_all_interfaces</Trans>
                                </option>
                                {renderInterfaces(interfaces)}
                            </Field>
                        </div>
                    </div>
                    <div className="col-4">
                        <div className="form-group">
                            <label>
                                <Trans>install_settings_port</Trans>
                            </label>
                            <Field
                                name="web.port"
                                component={renderField}
                                type="number"
                                className="form-control"
                                placeholder="80"
                                validate={[port, required]}
                                normalize={toNumber}
                            />
                        </div>
                    </div>
                </div>
                <div className="setup__desc">
                    <Trans>install_settings_interface_link</Trans>
                    <div className="mt-1">
                        <AddressList
                            interfaces={interfaces}
                            address={webIp}
                            port={webPort}
                        />
                    </div>
                    {webWarning &&
                        <div className="text-danger mt-2">
                            {webWarning}
                        </div>
                    }
                </div>
            </div>
            <div className="setup__group">
                <div className="setup__subtitle">
                    <Trans>install_settings_dns</Trans>
                </div>
                <div className="row">
                    <div className="col-8">
                        <div className="form-group">
                            <label>
                                <Trans>install_settings_listen</Trans>
                            </label>
                            <Field
                                name="dns.ip"
                                component="select"
                                className="form-control custom-select"
                            >
                                <option value={ALL_INTERFACES_IP}>
                                    <Trans>install_settings_all_interfaces</Trans>
                                </option>
                                {renderInterfaces(interfaces)}
                            </Field>
                        </div>
                    </div>
                    <div className="col-4">
                        <div className="form-group">
                            <label>
                                <Trans>install_settings_port</Trans>
                            </label>
                            <Field
                                name="dns.port"
                                component={renderField}
                                type="number"
                                className="form-control"
                                placeholder="80"
                                validate={[port, required]}
                                normalize={toNumber}
                            />
                        </div>
                    </div>
                </div>
                <div className="setup__desc">
                    <Trans>install_settings_dns_desc</Trans>
                    <div className="mt-1">
                        <AddressList
                            interfaces={interfaces}
                            address={dnsIp}
                            port={dnsPort}
                            isDns={true}
                        />
                    </div>
                    {dnsWarning &&
                        <div className="text-danger mt-2">
                            {dnsWarning}
                        </div>
                    }
                </div>
            </div>
            <Controls invalid={invalid} />
        </form>
    );
};

Settings.propTypes = {
    handleSubmit: PropTypes.func.isRequired,
    webIp: PropTypes.string.isRequired,
    dnsIp: PropTypes.string.isRequired,
    webPort: PropTypes.oneOfType([
        PropTypes.string,
        PropTypes.number,
    ]),
    dnsPort: PropTypes.oneOfType([
        PropTypes.string,
        PropTypes.number,
    ]),
    webWarning: PropTypes.string.isRequired,
    dnsWarning: PropTypes.string.isRequired,
    interfaces: PropTypes.object.isRequired,
    invalid: PropTypes.bool.isRequired,
    initialValues: PropTypes.object,
};

const selector = formValueSelector('install');

Settings = connect((state) => {
    const webIp = selector(state, 'web.ip');
    const webPort = selector(state, 'web.port');
    const dnsIp = selector(state, 'dns.ip');
    const dnsPort = selector(state, 'dns.port');

    return {
        webIp,
        webPort,
        dnsIp,
        dnsPort,
    };
})(Settings);

export default flow([
    withNamespaces(),
    reduxForm({
        form: 'install',
        destroyOnUnmount: false,
        forceUnregisterOnUnmount: true,
    }),
])(Settings);