#!/usr/bin/env node

var commander = require("commander"),
    d3 = Object.assign({}, require("d3-geo"), require("../")),
    read = require("./read"),
    write = require("./write");

commander
    .version(require("../package.json").version)
    .usage("[options] [file]")
    .description("Quantize GeoJSON.")
    .option("-o, --out <file>", "output file name; defaults to “-” for stdout", "-")
    .option("-p, --precision <value>", "number of output digits after the decimal point")
    .option("-n, --newline-delimited", "use newline-delimited JSON")
    .parse(process.argv);

if (commander.args.length > 1) {
  console.error();
  console.error("  error: multiple input files");
  console.error();
  process.exit(1);
} else if (commander.args.length === 0) {
  commander.args.push("-");
}

var reader = read(commander.args[0], commander.newlineDelimited, quantize).then(end).catch(abort),
    writer = write(commander.out);

function quantize(d, i) {
  if (commander.precision != null) d = d3.geoQuantize(d, commander.precision);
  return writer.write(JSON.stringify(d) + "\n");
}

function end() {
  return writer.end();
}

function abort(error) {
  console.error(error.stack);
}