/* @flow */

import React, { Component } from 'react';
import styled from 'styled-components';
import Select from 'react-select';
import { H2 } from 'components/common/Heading';
import AdvancedForm from './AdvancedForm';
import PendingTransactions from './PendingTransactions';
import { FeeSelectValue, FeeSelectOption } from './FeeSelect';
import SelectedAccount from '../SelectedAccount';
import { findAccountTokens } from 'reducers/TokensReducer';
import { calculate, validation } from 'actions/SendFormActions';

import { findToken } from 'reducers/TokensReducer';

import type { Props } from './index';
import type { Token } from 'flowtype';

export default class SendContainer extends Component<Props> {
    componentWillReceiveProps(newProps: Props) {
        calculate(this.props, newProps);
        validation(newProps);

        this.props.saveSessionStorage();
    }

    render() {
        return (
            <SelectedAccount {...this.props}>
                <Send {...this.props} />
            </SelectedAccount>
        );
    }
}

const StyledH2 = styled(H2)`
    padding: 20px 48px;
`;

const Send = (props: Props) => {
    const device = props.wallet.selectedDevice;
    const {
        account,
        network,
        discovery,
        tokens,
    } = props.selectedAccount;

    if (!device || !account || !discovery || !network) return null;

    const {
        address,
        amount,
        setMax,
        networkSymbol,
        currency,
        feeLevels,
        selectedFeeLevel,
        gasPriceNeedsUpdate,
        total,
        errors,
        warnings,
        infos,
        advanced,
        data,
        sending,
    } = props.sendForm;

    const {
        onAddressChange,
        onAmountChange,
        onSetMax,
        onCurrencyChange,
        onFeeLevelChange,
        updateFeeLevels,
        onSend,
    } = props.sendFormActions;

    const fiatRate = props.fiat.find(f => f.network === network);

    const tokensSelectData = tokens.map(t => ({ value: t.symbol, label: t.symbol }));
    tokensSelectData.unshift({ value: network.symbol, label: network.symbol });

    const setMaxClassName: string = setMax ? 'set-max enabled' : 'set-max';

    let updateFeeLevelsButton = null;
    if (gasPriceNeedsUpdate) {
        updateFeeLevelsButton = (
            <span className="update-fee-levels">Recommended fees updated. <a onClick={updateFeeLevels}>Click here to use them</a></span>
        );
    }

    let addressClassName: ?string;
    if (errors.address) {
        addressClassName = 'not-valid';
    } else if (warnings.address) {
        addressClassName = 'warning';
    } else if (address.length > 0) {
        addressClassName = 'valid';
    }

    let buttonDisabled: boolean = Object.keys(errors).length > 0 || total === '0' || amount.length === 0 || address.length === 0 || sending;
    let buttonLabel: string = 'Send';
    if (networkSymbol !== currency && amount.length > 0 && !errors.amount) {
        buttonLabel += ` ${amount} ${currency.toUpperCase()}`;
    } else if (networkSymbol === currency && total !== '0') {
        buttonLabel += ` ${total} ${network.symbol}`;
    }

    if (!device.connected) {
        buttonLabel = 'Device is not connected';
        buttonDisabled = true;
    } else if (!device.available) {
        buttonLabel = 'Device is unavailable';
        buttonDisabled = true;
    } else if (!discovery.completed) {
        buttonLabel = 'Loading accounts';
        buttonDisabled = true;
    }

    return (
        <section className="send-form">
            <StyledH2>Send Ethereum or tokens</StyledH2>
            <div className="row address-input">
                <label>Address</label>
                <input
                    type="text"
                    autoComplete="off"
                    autoCorrect="off"
                    autoCapitalize="off"
                    spellCheck="false"
                    value={address}
                    className={addressClassName}
                    onChange={event => onAddressChange(event.target.value)}
                />
                <span className="input-icon" />
                { errors.address ? (<span className="error">{ errors.address }</span>) : null }
                { warnings.address ? (<span className="warning">{ warnings.address }</span>) : null }
                { infos.address ? (<span className="info">{ infos.address }</span>) : null }
            </div>

            <div className="row">
                <label>Amount</label>
                <div className="amount-input">
                    <input
                        type="text"
                        autoComplete="off"
                        autoCorrect="off"
                        autoCapitalize="off"
                        spellCheck="false"
                        value={amount}
                        className={errors.amount ? 'not-valid' : null}
                        onChange={event => onAmountChange(event.target.value)}
                    />

                    <a className={setMaxClassName} onClick={onSetMax}>Set max</a>

                    <Select
                        name="currency"
                        className="currency"
                        searchable={false}
                        clearable={false}
                        multi={false}
                        value={currency}
                        disabled={tokensSelectData.length < 2}
                        onChange={onCurrencyChange}
                        options={tokensSelectData}
                    />
                </div>
                { errors.amount ? (<span className="error">{ errors.amount }</span>) : null }
                { warnings.amount ? (<span className="warning">{ warnings.amount }</span>) : null }
            </div>

            <div className="row">
                <label>Fee{ updateFeeLevelsButton }</label>
                <Select
                    name="fee"
                    className="fee"
                    searchable={false}
                    clearable={false}
                    value={selectedFeeLevel}
                    onChange={onFeeLevelChange}
                    valueComponent={FeeSelectValue}
                    optionComponent={FeeSelectOption}
                    disabled={networkSymbol === currency && data.length > 0}
                    optionClassName="fee-option"
                    options={feeLevels}
                />
            </div>

            <AdvancedForm
                selectedAccount={props.selectedAccount}
                sendForm={props.sendForm}
                sendFormActions={props.sendFormActions}
            >
                <button disabled={buttonDisabled} onClick={event => onSend()}>{ buttonLabel }</button>
            </AdvancedForm>

            <PendingTransactions
                pending={props.selectedAccount.pending}
                tokens={props.selectedAccount.tokens}
                network={network}
            />

        </section>
    );
};