import {describe, it, expect} from 'test/lib/common';

import * as rangeUtil from 'app/core/utils/rangeutil';
import _ from 'lodash';
import moment from 'moment';

describe("rangeUtil", () => {

  describe("Can get range grouped list of ranges", () => {
    it('when custom settings should return default range list', () => {
      var groups = rangeUtil.getRelativeTimesList({time_options: []}, 'Last 5 minutes');
      expect(_.keys(groups).length).to.be(4);
      expect(groups[3][0].active).to.be(true);
    });
  });

  describe("Can get range text described", () => {
    it('should handle simple old expression with only amount and unit', () => {
      var info = rangeUtil.describeTextRange('5m');
      expect(info.display).to.be('Last 5 minutes');
    });

    it('should have singular when amount is 1', () => {
      var info = rangeUtil.describeTextRange('1h');
      expect(info.display).to.be('Last 1 hour');
    });

    it('should handle non default amount', () => {
      var info = rangeUtil.describeTextRange('13h');
      expect(info.display).to.be('Last 13 hours');
      expect(info.from).to.be('now-13h');
    });

    it('should handle non default future amount', () => {
      var info = rangeUtil.describeTextRange('+3h');
      expect(info.display).to.be('Next 3 hours');
      expect(info.from).to.be('now');
      expect(info.to).to.be('now+3h');
    });

    it('should handle now/d', () => {
      var info = rangeUtil.describeTextRange('now/d');
      expect(info.display).to.be('Today so far');
    });

    it('should handle now/w', () => {
      var info = rangeUtil.describeTextRange('now/w');
      expect(info.display).to.be('This week so far');
    });

    it('should handle now/M', () => {
      var info = rangeUtil.describeTextRange('now/M');
      expect(info.display).to.be('This month so far');
    });

    it('should handle now/y', () => {
      var info = rangeUtil.describeTextRange('now/y');
      expect(info.display).to.be('This year so far');
    });
  });

  describe("Can get date range described", () => {
    it('Date range with simple ranges', () => {
      var text = rangeUtil.describeTimeRange({from: 'now-1h', to: 'now'});
      expect(text).to.be('Last 1 hour');
    });

    it('Date range with rounding ranges', () => {
      var text = rangeUtil.describeTimeRange({from: 'now/d+6h', to: 'now'});
      expect(text).to.be('now/d+6h to now');
    });

    it('Date range with absolute to now', () => {
      var text = rangeUtil.describeTimeRange({from: moment([2014,10,10,2,3,4]), to: 'now'});
      expect(text).to.be('Nov 10, 2014 02:03:04 to a few seconds ago');
    });

    it('Date range with absolute to relative', () => {
      var text = rangeUtil.describeTimeRange({from: moment([2014,10,10,2,3,4]), to: 'now-1d'});
      expect(text).to.be('Nov 10, 2014 02:03:04 to a day ago');
    });

    it('Date range with relative to absolute', () => {
      var text = rangeUtil.describeTimeRange({from: 'now-7d', to: moment([2014,10,10,2,3,4])});
      expect(text).to.be('7 days ago to Nov 10, 2014 02:03:04');
    });

    it('Date range with non matching default ranges', () => {
      var text = rangeUtil.describeTimeRange({from: 'now-13h', to: 'now'});
      expect(text).to.be('Last 13 hours');
    });

    it('Date range with from and to both are in now-* format', () => {
      var text = rangeUtil.describeTimeRange({from: 'now-6h', to: 'now-3h'});
      expect(text).to.be('now-6h to now-3h');
    });

    it('Date range with from and to both are either in now-* or now/* format', () => {
      var text = rangeUtil.describeTimeRange({from: 'now/d+6h', to: 'now-3h'});
      expect(text).to.be('now/d+6h to now-3h');
    });

    it('Date range with from and to both are either in now-* or now+* format', () => {
      var text = rangeUtil.describeTimeRange({from: 'now-6h', to: 'now+1h'});
      expect(text).to.be('now-6h to now+1h');
    });

  });

});
