const path = require('path');
const moment = require('moment');
const config = require('komodo-sdk/config');
const smstoolsConfig = require('./config-file');

function modemNames() {
    const modems = [];

    // eslint-disable-next-line no-restricted-syntax
    for (const [key, value] of Object.entries(smstoolsConfig.modems || {})) {
        if (value && !value.disabled) modems.push(key);
    }

    return modems;
}

function modemEntries() {
    const modems = modemNames();
    const retval = [];

    modems.forEach((modemName) => {
        const modem = smstoolsConfig.modems[modemName];

        const modemEntry = `
[${modemName}]
device = ${modem.device}
outgoing = ${modem.outgoing ? 'yes' : 'no'}
        `.trim();

        retval.push(modemEntry);
    });

    return retval;
}

module.exports = () => {
    const newContent = `
# Generated by komodo-center-smstools based on config timestamp ${moment(smstoolsConfig.ts).format('YYYY-MM-DD HH:mm:ss')}
# Do not edit this file manually

devices = ${modemNames().join(',')}
logfile = ${config.smstools_logfile || config.smstools_log_file || '/var/log/smsd/smsd.log'}
loglevel = ${smstoolsConfig.loglevel || 5}
smartlogging = yes
autosplit = ${(config.smstools_autosplit !== undefined && config.smstools_autosplit !== null) ? config.smstools_autosplit : 1}
user = ${smstoolsConfig.user || 'smstools'}
group = ${smstoolsConfig.group || 'smstools'}
eventhandler = ${config.smstools_eventhandler || '/var/lib/smstools/centers/smstools/bin/smstools-eventhandler.js'}
stats_interval = ${config.smstools_stats_interval || 60}
stats = ${path.dirname(config.smstools_status_file) || '/var/log/smsd/smsd_stats'}
sent = /var/spool/sms/sent
${smstoolsConfig.customConfig || ''}

[default]
incoming = yes
regular_run_interval = 60
regular_run_cmd = AT+CGSN
regular_run_cmd = AT+CIMI
regular_run_cmd = AT+COPS?
regular_run_statfile = /var/spool/sms/regular_run/modemname

${modemEntries().join('\n\n')}

# end of configuration file
    `;
    return `${newContent.trim()}\n`;
};