import { NeumeCollator } from "./NeumeCollator"
import * as fs from 'fs'
import { JSDOM } from 'jsdom'
import { exit } from "process"

const collator = new NeumeCollator()

if (process.argv.length < 4) {
    console.log('at least two files must be specified.')
    exit()
}

const dom = new JSDOM('')
const DOMParser = dom.window.DOMParser

const filenames = process.argv.slice(2)
const docs = filenames.map(filename => {
    const xml = fs.readFileSync(filename, 'utf8')
    return new DOMParser().parseFromString(xml, "text/xml")
})

collator.collate(docs)
const resultDOM = collator.dom()
if (!resultDOM) {
    console.log('Something went wrong while collating.')
    exit()
}

const result = new dom.window.XMLSerializer().serializeToString(resultDOM)
if (result) {
    console.log('success. output file will be written to new.xml')
    fs.writeFileSync('new.xml', result)
}
else {
    console.log('something went wrong.')
}