const { XMLParser } = require("fast-xml-parser"),
    { Client } = require('@elastic/elasticsearch'),
    config = require('./config.js'),
    parser = new XMLParser({ ignoreDeclaration: true, ignorePiTags: true }),
    client = new Client({ node: config.elasticnode }),
    monitnodes = config.monitnodes,
    username = config.username,
    password = config.password,
    request = async uri => {
        const ac = new AbortController()
        setTimeout(() => {
            ac.abort()
        }, 5000)
        const response = await fetch(uri, {
            signal: ac.signal,
            keepalive: false,
            timeout: config.timeout,
            headers: {
                Authorization: `Basic ${btoa(`${username}:${password}`)}`
            }
        }),
            xml = await response.text()
        setImmediate(() => { ac.abort() })
        return xml
    },
    index = async (node, data) => {
        await client.index({
            index: config.index,
            body: {
                data,
                node,
                timestamp: new Date()
            }
        })
    },
    start = async () => {
        await Promise.all(monitnodes.map(async node => {
            try {
                const xml = await request(`http://${node}:2812/_status?format=xml`),
                    json = parser.parse(xml)
                await index(node, json)
            } catch (e) {
                console.error(e)
            }
        }))
        setTimeout(async () => await start(), config.poll)
    }

(async () => {
    await start()
})()