imq-cli/lib/config.js

Command Line Interface for IMQ

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
/*!
 * IMQ-CLI library: config
 *
 * Copyright (c) 2018, Mykhailo Stadnyk <mikhus@gmail.com>
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
 * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */
const fs_1 = require("fs");
const fs_2 = require("./fs");
const constants_1 = require("./constants");
/**
 * Loads config from file and returns config object
 *
 * @return {IMQCLIConfig}
 */
function loadConfig() {
    if (!fs_1.existsSync(constants_1.CONFIG_PATH)) {
        return {};
    }
    const configText = fs_1.readFileSync(constants_1.CONFIG_PATH, { encoding: 'utf8' });
    if (!configText) {
        return {};
    }
    return JSON.parse(configText);
}
exports.loadConfig = loadConfig;
/**
 * Saves given config object to config file
 *
 * @param {IMQCLIConfig} config
 */
function saveConfig(config) {
    const configText = JSON.stringify(config, null, 2) + '\n';
    if (!fs_1.existsSync(constants_1.CONFIG_PATH)) {
        return fs_2.touch(constants_1.CONFIG_PATH, configText);
    }
    return fs_1.writeFileSync(constants_1.CONFIG_PATH, configText);
}
exports.saveConfig = saveConfig;
/**
 * Checks if current config file contains empty config
 *
 * @return {boolean}
 */
function configEmpty() {
    if (!fs_1.existsSync(constants_1.CONFIG_PATH)) {
        return true;
    }
    const config = loadConfig();
    return !(config && Object.keys(config).length);
}
exports.configEmpty = configEmpty;
/**
 * Prepares config value.
 * Actually it is used when the set command is called to cast
 * a given string value to a proper JSON-compatible object
 *
 * @param {any} value
 * @return {any}
 */
function prepareConfigValue(value) {
    if (typeof value === 'string') {
        switch (value) {
            case 'true': return true;
            case 'false': return false;
            case 'null': return null;
            case 'undefined': return undefined;
        }
        // istanbul ignore else
        // noinspection RegExpSingleCharAlternation,RegExpRedundantEscape
        if (/^\s*(\[|\{)/.test(value)) {
            return JSON.parse(value);
        }
    }
    return value;
}
exports.prepareConfigValue = prepareConfigValue;
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