const fs = require("fs");
const path = require("path");

let envLoaded = false;

function loadEnv(envPath = path.resolve(__dirname, "..", "..", ".env")) {
    if (envLoaded) return;
    envLoaded = true;

    if (!fs.existsSync(envPath)) return;

    const content = fs.readFileSync(envPath, "utf8");
    const lines = content.split(/\r?\n/);

    for (const line of lines) {
        const trimmed = line.trim();
        if (!trimmed || trimmed.startsWith("#")) continue;

        const separator = trimmed.indexOf("=");
        if (separator === -1) continue;

        const key = trimmed.slice(0, separator).trim();
        const value = trimmed.slice(separator + 1);

        if (!key || process.env[key] !== undefined) continue;

        process.env[key] = value;
    }
}

module.exports = {
    loadEnv,
};