#!/usr/bin/env node

const { DateTime } = require("luxon");
const { loadArticles } = require("../lib/stats/articles");

async function computeMostProlificMonth(contentDir) {
    const articles = await loadArticles(contentDir);
    const counts = new Map();

    for (const article of articles) {
        if (!article.date) continue;
        const monthKey = article.date.toFormat("yyyy-MM");
        counts.set(monthKey, (counts.get(monthKey) || 0) + 1);
    }

    if (counts.size === 0) {
        return null;
    }

    const sorted = Array.from(counts.entries()).sort((a, b) => {
        if (b[1] !== a[1]) return b[1] - a[1];
        return a[0] < b[0] ? -1 : 1;
    });

    const [monthKey, count] = sorted[0];
    const label = DateTime.fromISO(`${monthKey}-01`).setLocale("fr").toFormat("LLLL yyyy");

    return { value: `${label} (${count})`, month: monthKey, count };
}

async function run({ contentDir }) {
    const result = await computeMostProlificMonth(contentDir || "content");
    return result || { value: null };
}

module.exports = { run };