cli.js

#!/usr/bin/env node
const chalk = require("chalk");
const request = require("request");
const opn = require("opn");
const ora = require("ora");
const Configstore = require("configstore");
const pkg = require("./package.json");
const jsonLink =
  "https://raw.githubusercontent.com/excalith/git-cheats/master/assets/commands.json";
const boxen = require("boxen");
const checkForUpdate = require("update-check");
const conf = new Configstore(pkg.name, { lang: "en" });

let cmd = process.argv[2];
let bar = chalk.green("║ ");
let lang = conf.get("lang");

// Check Arguments
if (cmd === "-v" || cmd === "--version") {
  ShowVersion();
} else if (cmd == "-h" || cmd == "--help") {
  ShowHelp();
} else if (cmd == "-o" || cmd == "--open") {
  LaunchBrowser(process.argv[3]);
} else if (cmd == "-l" || cmd == "--language") {
  SetLanguage(process.argv[3]);
} else if (cmd) {
  FetchCommand(process.argv[2]);
} else {
  LaunchBrowser(false);
}

//** Check Updates */
async function ShowVersion() {
  let update = null;

  try {
    update = await checkForUpdate(pkg);
  } catch (error) {
    console.log(chalk.red("\nFailed to check for updates:"));
    console.error(error);
  }

  let updateText;
  let commandText;

  if (update) {
    updateText =
      "Update available " +
      chalk.gray(pkg.version) +
      " → " +
      chalk.green(update.latest);
    commandText = "Run " + chalk.cyan("npm i -g " + pkg.name) + " to update";
  } else {
    updateText = "You are using the latest version";
    commandText = pkg.name + " v" + pkg.version;
  }

  console.log(
    boxen(updateText + "\n" + commandText, {
      padding: 1,
      margin: 1,
      align: "center"
    })
  );
}

/**
 * Shows CLI help
 */
function ShowHelp() {
  console.log(
    chalk.white.bold("\nGitCheats CLI - A Companion For GitCheats\n")
  );
  console.log(chalk.white.bold("Commands:"));
  console.log("gitcheats".padEnd(39) + "Open gitcheats.com in browser");
  console.log(
    "gitcheats " +
      chalk.yellow("[command]").padEnd(39) +
      "Print command descriptions right into your terminal"
  );
  console.log(
    "gitcheats " +
      chalk.green("-o --open") +
      chalk.yellow(" [command]").padEnd(30) +
      "Open gitcheats.com in browser with your command filtered"
  );
  console.log(
    "gitcheats " +
      chalk.green("-l --language") +
      chalk.yellow(" [key]").padEnd(26) +
      "Set your preffered language (Default: en)"
  );
  console.log(
    "gitcheats " + chalk.green("-h --help").padEnd(39) + "Display this help"
  );
}

/**
 * Fetch command from original gitcheats json
 *
 * @param  {String} cmd Command to search for within json file
 */
function FetchCommand(cmd) {
  const spinner = ora({
    text: chalk.white.bold(
      "Fetching " +
        chalk.green(cmd) +
        " from " +
        chalk.blue("http://gitcheats.com")
    ),
    color: "green",
    interval: 80,
    spinner: "dots"
  }).start();

  request(
    {
      url: jsonLink,
      json: true
    },
    function(error, response, body) {
      if (!error && response.statusCode === 200) {
        let data = body.commands[cmd];

        if (data === undefined) {
          spinner.fail(
            "Command " + chalk.red(cmd) + " not found in gitcheats.com"
          );
          spinner.info(
            chalk.gray(
              "If gitcheats is missing a command, please consider contributing " +
                chalk.blue("https://github.com/excalith/git-cheats")
            )
          );
        } else {
          console.log("\n");
          LogCommand(cmd, data.desc[lang]);

          data.options.forEach(element => {
            LogCommand(element.code, element.desc[lang]);
          });

          spinner.stop();
        }
      }
    }
  );
}

/**
 * Check if language exists and set it to given key
 *
 * @param  {String} key Language key
 */
function SetLanguage(key) {
  const spinner = ora({
    text: chalk.white.bold("Fetching Language: " + key),
    color: "green",
    interval: 80,
    spinner: "dots"
  }).start();

  request(
    {
      url: jsonLink,
      json: true
    },
    function(error, response, body) {
      if (!error && response.statusCode === 200) {
        let data = body.settings.languages[key];

        if (data === undefined) {
          spinner.fail("Language not found. Available languages:");
          Object.keys(body.settings.languages).forEach(function(key) {
            console.log(
              key.padStart(4) + ": ".padStart(5) + body.settings.languages[key]
            );
          });
        } else {
          console.log("\n");
          conf.set("lang", key);
          spinner.succeed("Language set to " + data + "\n");

          spinner.stop();
        }
      }
    }
  );
}

/**
 * Print command and description into terminal
 *
 * @param  {String} command Command title
 * @param  {String} description Command description
 */
function LogCommand(command, description) {
  console.log(bar + chalk.green.bold("> git " + command));
  console.log(bar + description);
  console.log(bar);
}

/**
 * Fetch command from original gitcheats json
 *
 * @param  {boolean} hasCommand Checks if argv has a git command
 */
function LaunchBrowser(hasCommand) {
  if (hasCommand) {
    let command = process.argv[3];
    console.log(
      chalk.white.bold(
        "Launching " +
          chalk.green(command) +
          " on " +
          chalk.blue("http://gitcheats.com")
      )
    );
    opn("http://gitcheats.com?c=" + command);
  } else {
    console.log(
      chalk.white.bold("Launching " + chalk.blue("http://gitcheats.com"))
    );
    opn("http://gitcheats.com");
  }
}