const { preFormatted, stopWords } = require('./formatting');

const prototypeRE = /prototype/i;

const prototypesRE = /prototypes/i;

const removeProto = x => x !== 'prototype';

function titleCase(word) {

return word[0].toUpperCase() + word.slice(1);

}

function prototyper(str) {

const formatted = str

.replace(/javascript/i, '')

.split('-')

.map(str => {

if (prototypeRE.test(str)) {

if (str.length > 9) {

return prototyper(

str

.trim()

.split('prototype')

.join('-prototype-')

);

}

return str;

}

return titleify(str);

})

.join(' ')

.split(' ');

const noProto = formatted.filter(removeProto).filter(x => !!x);

if (noProto.length === 2) {

const [first, second] = noProto;

const secondLC = second.toLowerCase();

const finalSecond = preFormatted[secondLC]

? preFormatted[secondLC]

: secondLC;

return `${titleify(first)}.prototype.${finalSecond}`;

}

if (noProto.length === 1) {

return prototyper(

noProto[0]

.toLowerCase()

.split('.')

.join('-')

);

}

return titleify(str, true);

}

function titleify(str, triedPrototyper) {

if (str.match(prototypeRE) && !triedPrototyper && !prototypesRE.test(str)) {

return prototyper(str);

}

return str

.toLowerCase()

.split('-')

.map((word, i) => {

if (!word) {

return '';

}

if (stopWords.some(x => x === word) && i !== 0) {

return word;

}

return preFormatted[word] ? preFormatted[word] : titleCase(word);

})

.join(' ');

}

module.exports = titleify;