freecodecamp-american-british-translator/components/translator.js

const americanOnly = require('./american-only.js');
const americanToBritishSpelling = require('./american-to-british-spelling.js');
const americanToBritishTitles = require("./american-to-british-titles.js")
const britishOnly = require('./british-only.js')

class Translator {

    translateAmerican(string) {

        const americanOnlyKeys = Object.keys(americanOnly).sort((a, b) => b.length - a.length);
        const americanToBritishSpellingKeys = Object.keys(americanToBritishSpelling).sort((a, b) => b.length - a.length);
        const americanToBritishTitlesKeys = Object.keys(americanToBritishTitles).sort((a, b) => b.length - a.length);

        americanOnlyKeys.forEach(key => {

            const regex = new RegExp(key, 'i');

            if (string.match(regex)) {

                const replace = `<span class="highlight">${americanOnly[key]}</span>`;

                string = string.replace(regex, replace);

            }

        });

        americanToBritishSpellingKeys.forEach(key => {

            const regex = new RegExp(key, 'i');

            if (string.match(regex)) {

                const replace = `<span class="highlight">${americanToBritishSpelling[key]}</span>`

                string = string.replace(regex, replace);

            }

        });

        americanToBritishTitlesKeys.forEach(key => {

            const regex = new RegExp(key, 'i');

            if (string.match(regex)) {

                const value = americanToBritishTitles[key];

                const firstLetter = value.slice(0,1).toUpperCase();
                const rest = value.slice(1, value.length);

                const title = firstLetter + rest;

                const replace = `<span class="highlight">${title}</span>`;

                string = string.replace(regex, replace);

            }

        });

        const timeRegex = /\d+:\d{2}/;

        if (string.match(timeRegex)) {

            const time = string.match(timeRegex)[0].replace(':', '.');

            const replace = `<span class="highlight">${time}</span>`;

            string = string.replace(timeRegex, replace);

        }

        return string;

    }

    translateBritish(string) {

        const britishOnlyKeys = Object.keys(britishOnly).sort((a, b) => b.length - a.length);
        
        const britishToAmericanSpelling = {};
        
        Object.keys(americanToBritishSpelling).forEach(key => {
            const value = americanToBritishSpelling[key];
            britishToAmericanSpelling[value] = key;
        });

        const britishToAmericanSpellingKeys = Object.keys(britishToAmericanSpelling).sort((a, b) => b.length - a.length);
        
        const britishToAmericanTitles = {};

        Object.keys(americanToBritishTitles).forEach(key => {
            const value = americanToBritishTitles[key];
            britishToAmericanTitles[value] = key;
        });

        const britishToAmericanTitlesKeys = Object.keys(britishToAmericanTitles).sort((a, b) => b.length - a.length);

        britishOnlyKeys.forEach(key => {

            const regex = new RegExp(`\\s${key}\\.|${key}\\s`, 'i');

            const match = string.match(regex);

            if (match) {

                const replace = `<span class="highlight">${britishOnly[key]}</span>`;
                const text = match[0].trim().replace('.','');

                string = string.replace(text, replace);

            }

        });

        britishToAmericanSpellingKeys.forEach(key => {

            const regex = new RegExp(`\\s${key}|${key}\\s`, 'i');

            const match = string.match(regex);

            if (match) {

                const replace = `<span class="highlight">${britishToAmericanSpelling[key]}</span>`
                const text = match[0].trim();

                string = string.replace(text, replace);

            }

        });

        britishToAmericanTitlesKeys.forEach(key => {

            const regex = new RegExp(`\\s${key}|${key}\\s`, 'i');

            const match = string.match(regex);

            if (match) {

                const value = britishToAmericanTitles[key];

                const firstLetter = value.slice(0,1).toUpperCase();
                const rest = value.slice(1, value.length);

                const title = firstLetter + rest;

                const replace = `<span class="highlight">${title}</span>`;
                const text = match[0].trim();

                string = string.replace(text, replace);

            }

        });

        const timeRegex = /\d+.\d{2}/;

        if (string.match(timeRegex)) {

            const time = string.match(timeRegex)[0].replace('.', ':');

            const replace = `<span class="highlight">${time}</span>`;

            string = string.replace(timeRegex, replace);

        }

        return string;

    }

}

module.exports = Translator;