import { createQuestLayout, createGangLayout, QuestLayoutOptions, GangLayoutType } from '../src';
import { convertSvgsToPdf } from './svg-to-pdf';
import yargs from 'yargs';
import csvToJson from 'csvtojson';
import { promises } from 'fs';
import Path from 'path';
import combinePdfs from 'combine-pdfs';

const { readFile, writeFile, unlink } = promises;

// @ts-expect-error yargs.usage does exist, TS is wrong
const argv = yargs.usage('Usage: yarn generate:pdfs <path/to/file.csv>').demandCommand(1).parse();

async function main() {
    const csvPath = argv._[0];
    const json = await csvToJson().fromFile(csvPath);

    console.log('Generating SVG labels...');
    const svgs = json.map(toQuestLayoutOptions).map(createQuestLayout);

    console.log('Generating SVG pages...');
    const layouts = createGangLayout({ layout: GangLayoutType.AveryPresta61520, svgs });

    // for debugging
    // await writeSvgLayouts(layouts);

    console.log('Generating PDF...');
    const files = await convertSvgsToPdf({ svgs: layouts });

    // combine PDfs into a single output
    const pdfs = await Promise.all(files.map((file) => readFile(file)));
    const combined = await combinePdfs(pdfs);
    const parsedFile = Path.parse(csvPath);
    const filename = `${parsedFile.name}.pdf`;
    await writeFile(Path.resolve(__dirname, '../pdfs', filename), combined);

    // delete individual files
    await Promise.all(files.map(unlink));

    console.log(`Generated ${files.length} pages.`);
}

export async function writeSvgLayouts(layouts: string[]): Promise<void> {
    await Promise.all(
        layouts.map(async (layout, i) => {
            await writeFile(Path.resolve(__dirname, `../pdfs/svg-layout-${i}.svg`), layout);
        })
    );
}

// CSV data is expected to have these headers
interface CsvRecord {
    Manufacturer: string;
    Model: string;
    'Serial Number': string;
    'Coast ID': string;
    'Acquired Year': string;
    'Asset Details URL': string;
    'Service Request URL': string;
}

function toQuestLayoutOptions(item: CsvRecord): QuestLayoutOptions {
    const coastId = item['Coast ID'] ?? '';

    return {
        width: 375,
        assetUrl: item['Asset Details URL'],
        serviceRequestUrl: item['Service Request URL'],
        manufacturer: item['Manufacturer'],
        model: item['Model'],
        serialNumber: item['Serial Number'],
        coastId: coastId.replace(/,/g, ''),
        yearAcquired: item['Acquired Year'],
    };
}

main();