// node --require regenerator-runtime/runtime --require ./babel-local search.js ..\out result.csv

import {promises} from 'fs';
import {resolve} from 'path';
import {eachFormElement, eachItem, eachVestnik} from './lib/read';

const {writeFile, truncate} = promises;

async function work (prefix, outfile) {
    console.info(`Input directory: ${prefix}`);
    await truncate(outfile);
    console.info(`Output file: ${outfile}`);
    for await (let vestnik of eachVestnik(prefix)) {
        for (let item of eachItem(vestnik)) {
            const {id = '', url = "about:blank"} = item.zakazka && item.zakazka[0].$ || {};
            if (hasCpv("45", item)) {
                const v = oddiel_V(item);
                if (v) {
                    processV(v, {
                        id,
                        url
                    }, item, async items => await writeFile(outfile, poorMansCsv(items) + "\r\n", {flag: "a"}));
                }
            }
        }
    }
}

const formComponentIdEndsWith = (value, searchString) => value.$.FormComponentId && value.$.FormComponentId.endsWith(searchString);

function processV ({value: oddielV, dive: diveV}, soFar, item, out) {
    let processed = false;

    for (let {tag, value, cancel, dive} of diveV()) {
        if (tag === "RepeatingPart" && formComponentIdEndsWith(value, "-partZmluva")) {
            cancel();
            processed = processed || processZmluva({value, dive}, soFar, item, out);
        }
        if (tag === "Part" && (formComponentIdEndsWith(value, "-zadanieZakazky")||formComponentIdEndsWith(value, "-partV_2"))) {
            cancel();
            processed = processed || processZadanie({value, dive}, soFar, item, out);
        }
        if (tag === "Part" && formComponentIdEndsWith(value, "-partV_1")) {
            cancel();
            const {id, url} = soFar;
            out([id, url, -1, 0, '-', 0, '-', 0]);
            processed = true;
        }
    }

    if (!processed) {
        const {id, url} = soFar;
        out([id, url, -1, '?', '?', '?', '?', 0]);
    }
}

function processZmluva ({value: zmluva, dive: diveZmluva}, {id, url}, item, out) {
    let pocetPonuk = 0;
    let predpokladanaCena = '?';
    let predpokladanaMena = '?';
    let konecnaCena = '?';
    let konecnaMena = '?';
    let vitazIco = 0;

    for (let {tag, value, cancel} of diveZmluva()) {
        if (tag === "ShortText") {
            if (formComponentIdEndsWith(value, "-pocetDorucenychPonuk") && value.$.Value) {
                pocetPonuk = +value.$.Value;
            }
            if ((formComponentIdEndsWith(value, "-MN03_zmluvaPredpokladanaHodnota") || formComponentIdEndsWith(value, "-NM06_cena")) && value.$.Value) {
                predpokladanaCena = value.$.Value
            }
            if (formComponentIdEndsWith(value, "-stCKHZ_Hodnota") && value.$.Value) {
                konecnaCena = value.$.Value
            }
        }
        if (tag === "DropDownList") {
            if ((formComponentIdEndsWith(value, "-zmluvaMenaOd") || formComponentIdEndsWith(value, "-zmluvaCenaMena")) && value.SelectListValue) {
                predpokladanaMena = value.SelectListValue[0].$.Code;
            }
            if ((formComponentIdEndsWith(value, "-zmluvaCenyMena") || formComponentIdEndsWith(value, "-zmluvaCenaMenaPonuky")) && value.SelectListValue) {
                konecnaMena = value.SelectListValue[0].$.Code;
            }
        }
        if (tag === "ContactSelectList" && formComponentIdEndsWith(value, "-zmluvaVitaz")) {
            cancel();
            vitazIco = (value.PersonData[0].CorporateBody[0].ICO||['?'])[0];
        }
    }

    if (pocetPonuk === 0) return false;
    out([id, url, pocetPonuk, predpokladanaCena, predpokladanaMena, konecnaCena, konecnaMena, vitazIco]);
    return true;
}

function processZadanie ({value: zmluva, dive: diveZmluva}, {id, url}, item, out) {
    let pocetPonuk = 0;
    let predpokladanaCena = '?';
    let predpokladanaMena = '?';
    let konecnaCena = '?';
    let konecnaMena = '?';
    let vitazIco = 0;

    for (let {tag, value, cancel} of diveZmluva()) {
        if (tag === "ShortText") {
            if (formComponentIdEndsWith(value, "-pocetPrijatychPonuk") && value.$.Value) {
                pocetPonuk = +value.$.Value;
            }
            if (formComponentIdEndsWith(value, "-prepokladanaHZ") && value.$.Value) {
                predpokladanaCena = value.$.Value
            }
            if (formComponentIdEndsWith(value, "-konecnaHZ") && value.$.Value) {
                konecnaCena = value.$.Value
            }
        }
        if (tag === "DropDownList") {
            if (formComponentIdEndsWith(value, "-menaHZ_SYNCHRONIZE") && value.SelectListValue) {
                predpokladanaMena = value.SelectListValue[0].$.Code;
            }
            if (formComponentIdEndsWith(value, "-menaHZ") && value.SelectListValue) {
                konecnaMena = value.SelectListValue[0].$.Code;
            }
        }
        if (tag === "ContactSelectList" && formComponentIdEndsWith(value, "-kontaktNaDodavatela_alt")) {
            cancel();
            vitazIco = (value.PersonData[0].CorporateBody[0].ICO||['?'])[0];
        }
    }

    if (pocetPonuk === 0) return false;
    out([id, url, pocetPonuk, predpokladanaCena, predpokladanaMena, konecnaCena, konecnaMena, vitazIco]);
    return true;
}

const poorMansCsv = items => JSON.stringify(items).slice(1, -1);

function hasCpv (prefix, item) {
    for (let {tag, value, cancel} of eachFormElement(item)) {
        if (tag === "Part") {
            const match = value.$.Title && value.$.Title.match(/^ODDIEL\s+(\w+):/);
            if (match && match[1] !== "II") cancel();
        }
        if (tag === "Cpv" && value.$.Code.startsWith(prefix)) return true;
        if (tag === "SelectList" && value.$.Type === "CPV" && value.SelectListValue && value.SelectListValue[0].$.Title.startsWith(prefix)) return true;
    }
    return false;
}

function oddiel_V (item) {
    for (let {tag, value, cancel, dive} of eachFormElement(item)) {
        if (tag === "Part") {
            const match = value.$.Title && value.$.Title.match(/^ODDIEL\s+(\w+):/);
            if (match)
                if (match[1] === "V") return {value, dive}; else cancel();
        }
    }

    return null;
}

work(resolve(process.argv[2] || ''), resolve(process.argv[3] || 'result.csv'))
    .catch(error => console.error(error));