confd

#!/usr/bin/env node

'use strict';

let rest   = require('./rest');
let confd  = require('./index');
let docopt = require('docopt').docopt;

let DEFAULT_PORT = 6868;
let DEFAULT_FROM = '/etc/conf.d';


function startRest(port, from, strategy)
{
    port = port || DEFAULT_PORT;
    from = from || DEFAULT_FROM;

    console.log('Going to start conf.d service on port "%s", from folder "%s"...', port, from);

    rest.run(from, port, strategy);
}

function startCli(path, subpath, strategy)
{
    strategy = strategy || confd.strategy().default();

    let conf = confd.from(path).strategy().set(strategy);

    conf.get(subpath)
    .then( json =>
    {
        console.log(JSON.stringify(json, null, 4));
    })
    .catch( err =>
    {
        console.error('Could not load configuration from "%s" (subpath is "%s"). %s', path, subpath, err);

        process.exit(1);
    });
}


let options = 'Either starts the conf.d REST server or the command-line reader \n'
            + '  \n'
            + 'Usage: \n'
            + '  confd cli get <PATH> [<SUBPATH>] [--strategy leaves|backcursion|array]\n'
            + '  confd rest [--port <PORT>] [--from <FOLDER>] [--strategy leaves|backcursion|array]\n'
            + '  confd -h | --help \n'
            + '  \n'
            + 'Modes: \n'
            + '  cli  Starts the command-line reader\n'
            + '  rest Starts the REST server\n'
            + '  \n'
            + 'Options: \n'
            + '  get <PATH> [<SUBPATH>]              Read the JSON object from <PATH>, eventually scoped to sub-path <SUBPATH> \n'
            + '  --strategy leaves|backcursion|array Choose the strategy to be used to unify the documents (default is "' + confd.strategy().default().toLowerCase() + '") \n'
            + '  --port <PORT>                       Instructs the REST server to listen on port <PORT>. Default port is ' + DEFAULT_PORT + '. \n'
            + '  --from <FOLDER>                     Instructs the REST server to read data from <FOLDER>. Default folder is ' + DEFAULT_FROM + '. \n'
            + '  -h --help                           Shows this help \n';

let cmd = docopt(options);

if (cmd)
{
    if (cmd.rest)
    {
        startRest(cmd['--port'], cmd['--from'], cmd['--strategy']);
    }
    else if (cmd.cli)
    {
        startCli(cmd['<PATH>'], cmd['<SUBPATH>'], cmd['--strategy']);
    }
}