/// <reference types="node" />

import { install, log, TabtabEnv, uninstall, parseEnv } from "tabtab";

const opts = require("minimist")(process.argv.slice(2), {
    string: ["foo", "bar"],
    boolean: ["help", "version", "loglevel"]
});

const args = opts._;

const completion = (env: TabtabEnv) => {
    if (!env.complete) return;

    // Write your completions there

    if (env.prev === "foo") {
        return log(["is", "this", "the", "real", "life"]);
    }

    if (env.prev === "bar") {
        return log(["is", "this", "just", "fantasy"]);
    }

    if (env.prev === "--loglevel") {
        return log(["error", "warn", "info", "notice", "verbose"]);
    }

    return log([
        "--help",
        "--version",
        "--loglevel",
        "foo",
        "bar",
        "install-completion",
        "completion",
        "someCommand:someCommand is some kind of command with a description",
        {
            name: "someOtherCommand:hey",
            description: 'You must add a description for items with ":" in them'
        },
        "anotherOne"
    ]);
};

const run = (): Promise<void> => {
    const cmd = args[0];

    // Write your CLI there

    // Here we install for the program `tabtab-test` (this file), with
    // completer being the same program. Sometimes, you want to complete
    // another program that's where the `completer` option might come handy.
    if (cmd === "install-completion") {
        return install({
            name: "tabtab-test",
            completer: "tabtab-test"
        });
    }

    if (cmd === "uninstall-completion") {
        // Here we uninstall for the program `tabtab-test` (this file).
        return uninstall({
            name: "tabtab-test"
        });
    }

    // The completion command is added automatically by tabtab when the program
    // is completed.
    if (cmd === "completion") {
        return new Promise<void>(res => {
            const env = parseEnv(process.env);
            completion(env);
            res();
        });
    }

    return new Promise<void>((_, rej) => rej());
};

run().catch(e => {
    console.error(e);
});