meta-crate.js

#!/usr/bin/env node

/*
Creates a "Meta Crate" that contains other crates

*/

const program = require('commander');
const fs = require('fs-extra');
const path = require('path');
const Preview = require("ro-crate").Preview;
const HtmlFile = require("ro-crate").HtmlFile;
const ROCrate = require("ro-crate").ROCrate;

program
  .version("0.1.0")
  .description(
    "Creates a meta-crate that wraps up other crates"
  )
  .arguments("<d>")
  .option("-c,  --cratescript [cratesript]", "URL of Crate-script directory")
  .option("-d, --directory [dir]", "Data directory which should contain crates as sub directories")
  .option("-n, --name [name]", "Name for this crate", "Untitled")
  .option("-t, --description [description]", "Description for this crate", "No description provided")
  .option("-u, --url [url]", "URL to prepend to crate IDs", "https://data.research.uts.edu.au/examples/ro-crate/examples/src/")

  .action((d) => {crateDir = d})


program.parse(process.argv);

async function main(program) {
    //const date = Date.now().toISOString();
    const date = "";
    console.log(date)
    const promises = [];
    const crate = new ROCrate();
    crate.index();
    const root = crate.getRootDataset();
    root.name = program.name;
    root.description = program.description;
    const metadataFilename = "ro-crate-metadata.json";

    root.hasPart = [];
    for (let d of  await fs.readdir(program.directory)) {
        console.log(d);
        var p = path.join(program.directory, d, metadataFilename)
        const id = `${program.url}${d}/`;
        console.log(p)
        if  (!await fs.exists(p)) {
            p = `${p}ld`;
        }
        if (await fs.exists(p)) {
            console.log("Found:", p)
            const json = JSON.parse(await fs.readFile(p, "utf-8") );
            const c = new ROCrate(json);
            c.index();
            r = c.getRootDataset();
            part = {
                "@type": "Dataset",
                "name": r.name,
                "description": r.description,
                "@id": id
            }
            crate.addItem(part);
            root.hasPart.push({"@id": part["@id"]})
        }
    }
    await fs.writeFileSync(path.join(program.directory,metadataFilename), JSON.stringify(crate.getJson(), null, 2))
    const preview = new Preview(crate);
    const f = new HtmlFile(preview);
    newPath = path.join(
        program.directory,
        crate.defaults.roCratePreviewFileName
    );
    fs.writeFileSync(newPath, await f.render("", program.cratescript));

}


main (program);