index.js

#!/usr/bin/node

const { Command } = require('commander');
const { getAllLocations, getLocations, panic, getDataFromBooli, calculateAggregates } = require('./lib');
const debug = require('debug')('command')

const program = new Command();


program.version('0.0.1');

program
    .description("This command lets you check price of proprties")

    .option('-A, --list_locations', 'list supported locations')
    .option('-l, --location <location_id...>', 'Show statistics for <location_id>. Multiple')
    .option("-a, --all_locations", "all supported locations. (Takes a while)")
    .option("-p, --pages <number>", "Number of pages to check (more means better precision but slower)")
    .option("--per_month", "Break down statistics per month")

    .option("-F, --flats", "Pick flats (default flats + houses)")
    .option("-H, --houses", "Pick houses (default flats + houses)")
// .option("-f, --area_from <xx m^2>", "Area from")
// .option("-t, --area_to <xx m^2>", "Area to");

program.parse(process.argv);

const main = async () => {

    const options = program.opts();

    if (!options.flats && !options.houses) {
        options.flats = true;
        options.houses = true;
    }

    if (options.list_locations && !options.location) {
        options.all_locations = true;
    }

    debug("finished procesing params", options);

    const locations = options.all_locations ? getAllLocations() : getLocations(options.location);

    debug("Locations to be cheked ", locations)

    if ((!locations) || (!options.all_locations) && locations.length !== options.location.length) {
        panic("Failed to fetch locations")
    }

    if (options.list_locations) {
        printLocations(locations);
        process.exit();
    }

    const locationsWithData = await getDataFromBooli(locations, options);

    const locationsaWithAggregates = locationsWithData.map(location => ({
        ...location,
        aggregates: calculateAggregates(location.data, options.per_month)
    }))

    printResults(locationsaWithAggregates);
}


const printLocations = (locations) => {

    console.log(JSON.stringify(locations));

}

const printResults = (locationsaWithAggregates) => {
    const printOnlyData = locationsaWithAggregates.map(location => ({
        id: location.id,
        name: location.name,
        ...location.aggregates
    }));

    console.log(JSON.stringify(printOnlyData));
}

main();