persistance.js

import { Str } from "@merrymake/utils";
import { existsSync } from "fs";
import { mkdir, readFile, writeFile } from "fs/promises";
import { homedir } from "os";
const EOL_COMMENT_CHAR = "//";
const configFolder = homedir() + "/.merrymake/";
const configFile = configFolder + "config";
const configLine = {};
const config = {};
const fileContent = [];
const configReady = (async () => {
    if (!existsSync(configFolder))
        await mkdir(configFolder);
    if (existsSync(configFile))
        (await readFile(configFile, "utf-8")).split("\n").forEach((line, index) => {
            const [assignment, comment] = Str.partitionLeft(line, EOL_COMMENT_CHAR);
            const [key, value] = Str.partitionLeft(assignment, "=");
            fileContent.push([key, value, comment]);
            if (key.length > 0) {
                config[key] = value;
                configLine[key] = index;
            }
        });
})();
let configWriteFinished = Promise.resolve();
export function waitForConfigWrite() {
    return configWriteFinished;
}
export async function getConfig(key) {
    if (config[key] !== undefined)
        return config[key];
    await configReady;
    return config[key];
}
export function setConfig(entries) {
    Object.entries(entries).forEach(([k, v]) => (entries[k] = v));
    configWriteFinished = configWriteFinished.then(async () => {
        await configReady;
        Object.entries(entries).forEach(([k, v]) => {
            if (configLine[k] === undefined)
                fileContent.push([k, v, ""]);
            else
                fileContent[configLine[k]][1] = v;
        });
        await writeFile(configFile, fileContent
            .map((line) => `${line[0].length > 0 ? line[0] + "=" : ""}${line[1]}${line[2].length > 0 ? "//" + line[2] : ""}`)
            .join("\n"));
    });
}