import isMobile = require('is-mobile');
import * as _ from 'lodash';
import { scroller } from 'react-scroll';

import { EtherscanLinkSuffixes, Networks } from '../types';

import { constants } from './constants';

export const utils = {
    setUrlHash(anchorId: string): void {
        window.location.hash = anchorId;
    },
    scrollToHash(hash: string, containerId: string): void {
        let finalHash = hash;
        if (_.isEmpty(hash)) {
            finalHash = constants.SCROLL_TOP_ID; // scroll to the top
        }

        scroller.scrollTo(finalHash, {
            duration: 0,
            offset: 0,
            containerId,
        });
    },
    isUserOnMobile(): boolean {
        const isUserOnMobile = isMobile();
        return isUserOnMobile;
    },
    getIdFromName(name: string): string {
        const id = name.replace(/ /g, '-');
        return id;
    },
    convertDashesToSpaces(text: string): string {
        return text.replace(/-/g, ' ');
    },
    convertCamelCaseToSpaces(text: string): string {
        const charArray = _.map(text, (char, i) => {
            const isNumber = !_.eq(_.parseInt(char), NaN);
            const isPrevNumber = i !== 0 && !_.eq(_.parseInt(text[i - 1]), NaN);
            if (isNumber && (i === 0 || isPrevNumber)) {
                return char;
            }
            if (char === char.toUpperCase() && i !== 0) {
                return ` ${char}`;
            }
            return char;
        });
        let finalText = charArray.join('');
        const exceptions = { 'EIP ': 'E I P', 'ZRX ': 'Z R X', 'ERC ': 'E R C', RPC: 'R P C' };
        _.each(exceptions, (spaced, normal) => {
            if (_.includes(finalText, spaced)) {
                finalText = finalText.replace(spaced, normal);
            }
        });
        return finalText;
    },
    getEtherScanLinkIfExists(
        addressOrTxHash: string,
        networkId: number,
        suffix: EtherscanLinkSuffixes,
    ): string | undefined {
        const networkName = constants.NETWORK_NAME_BY_ID[networkId];
        if (_.isUndefined(networkName)) {
            return undefined;
        }
        const etherScanPrefix = networkName === Networks.Mainnet ? '' : `${networkName.toLowerCase()}.`;
        return `https://${etherScanPrefix}etherscan.io/${suffix}/${addressOrTxHash}`;
    },
};