const { getEnvConfig } = require('./config');

async function baserowFetch(endpoint, options = {}) {
    const { baserowUrl, baserowToken } = getEnvConfig();
    const url = `${baserowUrl}/api${endpoint}`;
    const res = await fetch(url, {
        ...options,
        headers: {
            Authorization: `Token ${baserowToken}`,
            'Content-Type': 'application/json',
            ...(options.headers || {}),
        },
    });
    if (!res.ok) {
        const body = await res.text().catch(() => '');
        throw new Error(`Baserow ${res.status}: ${body.substring(0, 200)}`);
    }
    return res.json();
}

async function listRows(tableId, filters = {}) {
    let all = [];
    let page = 1;
    while (true) {
        let url = `/database/rows/table/${tableId}/?user_field_names=true&size=200&page=${page}`;
        for (const [field, value] of Object.entries(filters)) {
            url += `&filter__${encodeURIComponent(field)}__equal=${encodeURIComponent(value)}`;
        }
        const data = await baserowFetch(url);
        all = all.concat(data.results || []);
        if (!data.next) break;
        page++;
    }
    return all;
}

async function batchCreateRows(tableId, rows) {
    if (!rows.length) return;
    // Baserow limit: 200 per batch
    for (let i = 0; i < rows.length; i += 200) {
        const chunk = rows.slice(i, i + 200);
        await baserowFetch(`/database/rows/table/${tableId}/batch/?user_field_names=true`, {
            method: 'POST',
            body: JSON.stringify({ items: chunk }),
        });
    }
}

module.exports = { listRows, batchCreateRows };