// This gets overriddenby gulp during bip39-XX
var exportWordlist = false;

import { defineReadOnly } from '../utils/properties';

import { Wordlist as _Wordlist } from '../utils/types';

export abstract class Wordlist implements _Wordlist {
    locale: string;

    constructor(locale: string) {
        defineReadOnly(this, 'locale', locale);
    }

    abstract getWord(index: number): string;
    abstract getWordIndex(word: string): number;

    // Subclasses may override this
    split(mnemonic: string): Array<string> {
        return mnemonic.toLowerCase().split(/ +/g)
    }

    // Subclasses may override this
    join(words: Array<string>): string {
        return words.join(' ');
    }
}

export function register(lang: Wordlist, name?: string): void {
    if (!name) { name = lang.locale; }
    if (exportWordlist) {
        let g: any = (<any>global)
        if (!(g.wordlists)) { defineReadOnly(g, 'wordlists', { }); }
        if (!g.wordlists[name]) {
            defineReadOnly(g.wordlists, name, lang);
        }
        if (g.ethers && g.ethers.wordlists) {
            if (!g.ethers.wordlists[name]) {
                defineReadOnly(g.ethers.wordlists, name, lang);
            }
        }
    }
}