import {
    ANCHOR_MARK,
    ANCHOR_SPACE,
    LETTERS_AND_DIGITS,
    REPOSITORY_PAGES,
    SENTENCE_STOP,
    SPACE,
} from "#configuration/constants/readme.constants";
import { METHODOLOGY_PAGE } from "@banes-lab/web/core/ids/page.ids.ts";
import { WORD_SEPARATOR } from "#configuration/constants/chapter.constants";

export const isRepositoryPage = function isRepositoryPage(page: string): boolean {
    return REPOSITORY_PAGES.includes(page);
};

export const pageFolderOf = function pageFolderOf(page: string, label: string): string {
    return page === METHODOLOGY_PAGE ? "" : label.toLowerCase().split(SPACE).join(WORD_SEPARATOR);
};

export const anchorOf = function anchorOf(title: string): string {
    let out = "";
    for (const char of title.toLowerCase()) {
        const kept = LETTERS_AND_DIGITS.includes(char) || char === ANCHOR_SPACE;
        out += kept ? char : (char === SPACE ? ANCHOR_SPACE : "");
    }
    return ANCHOR_MARK + out;
};

export const firstSentenceOf = function firstSentenceOf(text: string): string {
    const stop = text.indexOf(SENTENCE_STOP);
    return stop === -1 ? text : text.slice(0, stop + SENTENCE_STOP.trimEnd().length);
};