/* eslint-disable import/no-dynamic-require */
/* eslint-disable no-await-in-loop */
/* eslint-disable no-eval */
const fs = require('fs');
const os = require('os');
const path = require('path');
const download = require('./download');
const { folderSize } = require('../utils');

function root(name) {
    return path.resolve(process.cwd(), name);
}

const moduleRoots = [
    root('.build/module'),
    root('module'),
    root(path.resolve(os.homedir(), '.hydro', 'module')),
    root('.'),
];
let moduleRoot;
for (const i of moduleRoots) {
    if (fs.existsSync(i) && fs.statSync(i).isDirectory()) {
        moduleRoot = i;
        break;
    }
}

async function getInstalled() {
    const modules = [];
    const files = fs.readdirSync(`${os.tmpdir()}/hydro/tmp`);
    for (const file of files) {
        const info = `${os.tmpdir()}/hydro/tmp/${file}/hydro.json`;
        if (fs.existsSync(info)) {
            modules.push(file);
        }
    }
    return modules;
}

async function getDetail() {
    const modules = [];
    const files = fs.readdirSync(`${os.tmpdir()}/hydro/tmp`);
    for (const file of files) {
        const info = `${os.tmpdir()}/hydro/tmp/${file}/hydro.json`;
        if (fs.existsSync(info)) {
            const i = JSON.parse(fs.readFileSync(info).toString());
            const size = folderSize(`${os.tmpdir()}/hydro/tmp/${file}`);
            modules.push({
                id: i.id,
                version: i.version,
                description: i.description,
                size,
            });
        }
    }
    return modules;
}

async function del(id) {
    fs.unlinkSync(root(`${moduleRoot}/${id}.hydro`));
}

function install(url) {
    return download(url, root(`${moduleRoot}/${String.random(16)}.hydro`));
}

global.Hydro.lib.hpm = module.exports = {
    getInstalled, getDetail, del, install,
};