/* Any copyright is dedicated to the Public Domain.
   http://creativecommons.org/publicdomain/zero/1.0/ */

const {Services} = ChromeUtils.import("resource://gre/modules/Services.jsm");

function run_test() {
  test_methods_presence();
  test_methods_calling();
  test_constructors();
  test_rtf_formatBestUnit();

  ok(true);
}

function test_methods_presence() {
  equal(Services.intl.getCalendarInfo instanceof Function, true);
  equal(Services.intl.getDisplayNames instanceof Function, true);
  equal(Services.intl.getLocaleInfo instanceof Function, true);
  equal(Services.intl.getLocaleDisplayNames instanceof Function, true);
}

function test_methods_calling() {
  Services.intl.getCalendarInfo("pl");
  Services.intl.getDisplayNames("ar");
  Services.intl.getLocaleInfo("de");
  new Services.intl.DateTimeFormat("fr");
  new Services.intl.RelativeTimeFormat("fr");
  ok(true);
}

function test_constructors() {
  let constructors = [
    "DateTimeFormat", "NumberFormat", "PluralRules", "Collator"];

  constructors.forEach(constructor => {
    let obj = new Intl[constructor]();
    let obj2 = new Services.intl[constructor]();

    equal(typeof obj, typeof obj2);

    Assert.throws(() => {
      // This is an observable difference between Intl and mozIntl.
      //
      // Old ECMA402 APIs (edition 1 and 2) allowed for constructors to be called
      // as functions.
      // Starting from ed.3 all new constructors are throwing when called without |new|.
      //
      // All MozIntl APIs do not implement the legacy behavior and throw
      // when called without |new|.
      //
      // For more information see https://github.com/tc39/ecma402/pull/84 .
      Services.intl[constructor]();
    }, /class constructors must be invoked with |new|/);
  });
}

function testRTFBestUnit(anchor, value, expected) {
  let rtf = new Services.intl.RelativeTimeFormat("en-US");
  deepEqual(rtf.formatBestUnit(new Date(value), {now: anchor}), expected);
}

function test_rtf_formatBestUnit() {
  {
    // format seconds-distant dates
    let anchor = new Date("2016-04-10 12:00:00");
    testRTFBestUnit(anchor, "2016-04-10 11:59:01", "59 seconds ago");
    testRTFBestUnit(anchor, "2016-04-10 12:00:00", "now");
    testRTFBestUnit(anchor, "2016-04-10 12:00:59", "in 59 seconds");
  }

  {
    // format minutes-distant dates
    let anchor = new Date("2016-04-10 12:00:00");
    testRTFBestUnit(anchor, "2016-04-10 11:01:00", "59 minutes ago");
    testRTFBestUnit(anchor, "2016-04-10 11:59", "1 minute ago");
    testRTFBestUnit(anchor, "2016-04-10 12:01", "in 1 minute");
    testRTFBestUnit(anchor, "2016-04-10 12:01:59", "in 1 minute");
    testRTFBestUnit(anchor, "2016-04-10 12:59:59", "in 59 minutes");
  }

  {
    // format hours-distant dates
    let anchor = new Date("2016-04-10 12:00:00");
    testRTFBestUnit(anchor, "2016-04-10 00:00", "12 hours ago");
    testRTFBestUnit(anchor, "2016-04-10 13:00", "in 1 hour");
    testRTFBestUnit(anchor, "2016-04-10 13:59:59", "in 1 hour");
    testRTFBestUnit(anchor, "2016-04-10 23:59:59", "in 11 hours");

    anchor = new Date("2016-04-10 01:00");
    testRTFBestUnit(anchor, "2016-04-09 19:00", "6 hours ago");
    testRTFBestUnit(anchor, "2016-04-09 18:00", "yesterday");

    anchor = new Date("2016-04-10 23:00");
    testRTFBestUnit(anchor, "2016-04-11 05:00", "in 6 hours");
    testRTFBestUnit(anchor, "2016-04-11 06:00", "tomorrow");

    anchor = new Date("2016-01-31 23:00");
    testRTFBestUnit(anchor, "2016-02-01 05:00", "in 6 hours");
    testRTFBestUnit(anchor, "2016-02-01 07:00", "tomorrow");

    anchor = new Date("2016-12-31 23:00");
    testRTFBestUnit(anchor, "2017-01-01 05:00", "in 6 hours");
    testRTFBestUnit(anchor, "2017-01-01 07:00", "tomorrow");
  }

  {
    // format days-distant dates
    let anchor = new Date("2016-04-10 12:00:00");
    testRTFBestUnit(anchor, "2016-04-01 00:00", "9 days ago");
    testRTFBestUnit(anchor, "2016-04-09 18:00", "yesterday");
    testRTFBestUnit(anchor, "2016-04-11 09:00", "tomorrow");
    testRTFBestUnit(anchor, "2016-04-30 23:59", "in 20 days");
    testRTFBestUnit(anchor, "2016-03-31 23:59", "last month");
    testRTFBestUnit(anchor, "2016-05-01 00:00", "next month");

    anchor = new Date("2016-04-06 12:00");
    testRTFBestUnit(anchor, "2016-03-31 23:59", "6 days ago");

    anchor = new Date("2016-04-25 23:00");
    testRTFBestUnit(anchor, "2016-05-01 00:00", "in 6 days");
  }

  {
    // format months-distant dates
    let anchor = new Date("2016-04-10 12:00:00");
    testRTFBestUnit(anchor, "2016-01-01 00:00", "3 months ago");
    testRTFBestUnit(anchor, "2016-03-01 00:00", "last month");
    testRTFBestUnit(anchor, "2016-05-01 00:00", "next month");
    testRTFBestUnit(anchor, "2016-12-01 23:59", "in 8 months");

    anchor = new Date("2017-01-12 18:30");
    testRTFBestUnit(anchor, "2016-12-29 18:30", "last month");

    anchor = new Date("2016-12-29 18:30");
    testRTFBestUnit(anchor, "2017-01-12 18:30", "next month");

    anchor = new Date("2016-02-28 12:00");
    testRTFBestUnit(anchor, "2015-12-31 23:59", "2 months ago");
  }

  {
    // format year-distant dates
    let anchor = new Date("2016-04-10 12:00:00");
    testRTFBestUnit(anchor, "2014-04-01 00:00", "2 years ago");
    testRTFBestUnit(anchor, "2015-03-01 00:00", "last year");
    testRTFBestUnit(anchor, "2017-05-01 00:00", "next year");
    testRTFBestUnit(anchor, "2024-12-01 23:59", "in 8 years");

    anchor = new Date("2017-01-12 18:30");
    testRTFBestUnit(anchor, "2016-01-01 18:30", "last year");
    testRTFBestUnit(anchor, "2015-12-29 18:30", "2 years ago");

    anchor = new Date("2016-12-29 18:30");
    testRTFBestUnit(anchor, "2017-07-12 18:30", "next year");
    testRTFBestUnit(anchor, "2017-02-12 18:30", "in 2 months");
    testRTFBestUnit(anchor, "2018-01-02 18:30", "in 2 years");

    testRTFBestUnit(anchor, "2098-01-02 18:30", "in 82 years");
  }
}