import * as CLI from 'yargs'
import { logger } from '../'
import * as path from 'path'
import { Helper } from '../lib/process/index'
import * as pMap from 'p-map'

const fg = require('fast-glob')

const defaultOptions = (yargs: CLI.Argv) => {
    return yargs.option('input', {
        default: './',
        describe: 'The sources'
    }).option('debug', {
        default: 'false',
        describe: 'Enable internal debug message'
    })
};

let options = (yargs: CLI.Argv) => defaultOptions(yargs);

async function convertFiles(files){
    return pMap(files,(file: any) => {
        const inParts = path.parse(file);
        // magick convert leg.pdf -quality 100 -density 250 -trim -flatten -resize 200% -sharpen 0x1.0 leg.jpg
        const promise = Helper.run(inParts.dir, 'convert',
        [
            `"${inParts.base}[0]"`,
            '-quality 80',
            '-density 250',
            '-trim',
            '-flatten',
            '-sharpen 0x1.0',
            `"${inParts.name}.jpg"`
        ]);
        return promise;
    },{ concurrency: 1 });
}

// node ./build/main.js pdf2jpg --input=../drawings
export const register = (cli: CLI.Argv) => {
    return cli.command('pdf2jpg', '', options, async (argv: CLI.Arguments) => {
        if (argv.help) { return; }
        const src = path.resolve('' + argv.input);
        if (argv.debug) {
            logger.debug(`Begin convert PDF files${src}`);
        }
        const files = fg.sync('*.pdf|*.PDF', { dot: true, cwd: src, absolute: true });
        await convertFiles(files);
        if (argv.debug) {
            logger.debug(`Converted ${files.length} files`);
        }
    })
}