import type { H3Event } from 'h3';

import type { PronounExamplesData } from '~/locale/data.ts';
import { getLocale, loadPronounExamples } from '~/server/data.ts';
import { PronounExample } from '~/src/classes.ts';
import type { Pronoun } from '~/src/classes.ts';
import { buildList } from '~/src/helpers.ts';
import { Example } from '~/src/language/examples.ts';

export interface PublicPronoun extends Omit<Pronoun, 'config' | 'hidden' | 'name'> {
    examples: string[];
    name: string;
}

const buildExample = (e: PronounExamplesData): PronounExample => new PronounExample(
    Example.parse(e.singular),
    Example.parse(e.plural || e.singular),
    Example.parse(e.null || e.singular),
    Example.parse(e.null_plural || e.plural || e.singular),
    e.isHonorific,
);

export const getPronounExamples = async (event: H3Event): Promise<PronounExamplesData[]> => {
    const examples = getQuery(event).examples as string[] | undefined;

    if (!examples || !examples.length) {
        return loadPronounExamples(getLocale(event));
    }

    return examples.map((example) => {
        const [singular, plural, isHonorific] = example.split('|');
        return { singular, plural, isHonorific: !!isHonorific };
    });
};

export const addExamples = (pronoun: Pronoun, examples: PronounExamplesData[]): string[] => {
    return buildList(function* () {
        for (const example of examples) {
            yield buildExample(example).example(pronoun).toSpellingString(pronoun.toExampleValues());
        }
    });
};

export const makePublicPronoun = (pronoun: Pronoun, examples: PronounExamplesData[]): PublicPronoun => {
    const publicPronoun: any = pronoun.clone();
    publicPronoun.examples = addExamples(pronoun, examples);
    publicPronoun.name = pronoun.name();
    delete publicPronoun.config;
    delete publicPronoun.hidden;
    return publicPronoun;
};