Skip to content

/FreeCodeCamp

Browse files

Timestamps are converted to start of the days and filtered to b uniqu… 

…e before calculating streaks
  • Loading branch information...
1 parent 2d33525 commit 631c7ea319202c9dd323ebc03e99462db0b19d16 @LenaBarinova LenaBarinova committed
View
1 package.json
@@ -148,6 +148,7 @@
"loopback-component-explorer": "^2.1.1",
"loopback-testing": "^1.1.0",
"mocha": "^2.3.3",
+ "sinon": "^1.17.3",
"tap-spec": "^4.1.1",
"tape": "^4.2.2"
}
View
17 server/boot/user.js
@@ -14,7 +14,11 @@ import certTypes from '../utils/certTypes.json';
import { ifNoUser401, ifNoUserRedirectTo } from '../utils/middleware';
import { observeQuery } from '../utils/rx';
-import { calcCurrentStreak, calcLongestStreak } from '../utils/user-stats';
+import {
+ prepUniqueDays,
+ calcCurrentStreak,
+ calcLongestStreak
+} from '../utils/user-stats';
const debug = debugFactory('freecc:boot:user');
const sendNonUserToMap = ifNoUserRedirectTo('/map');
@@ -192,17 +196,18 @@ module.exports = function(app) {
const timezone = req.user &&
req.user.timezone ? req.user.timezone : 'UTC';
- var cals = profileUser
+ const timestamps = profileUser
.progressTimestamps
.map(objOrNum => {
return typeof objOrNum === 'number' ?
objOrNum :
objOrNum.timestamp;
- })
- .sort();
+ });
+
+ const uniqueDays = prepUniqueDays(timestamps, timezone);
- profileUser.currentStreak = calcCurrentStreak(cals, timezone);
- profileUser.longestStreak = calcLongestStreak(cals, timezone);
+ profileUser.currentStreak = calcCurrentStreak(uniqueDays, timezone);
+ profileUser.longestStreak = calcLongestStreak(uniqueDays, timezone);
const data = profileUser
.progressTimestamps
View
2 server/utils/date-utils.js
@@ -3,7 +3,7 @@ import moment from 'moment-timezone';
// day count between two epochs (inclusive)
export function dayCount([head, tail], timezone = 'UTC') {
return Math.ceil(
- moment(moment(head).tz(timezone).endOf('day')).tz(timezone).diff(
+ moment(moment(head).tz(timezone).endOf('day')).diff(
moment(tail).tz(timezone).startOf('day'),
'days',
true)
View
54 server/utils/user-stats.js
@@ -1,46 +1,54 @@
+import _ from 'lodash';
import moment from 'moment-timezone';
import { dayCount } from '../utils/date-utils';
const daysBetween = 1.5;
-export function calcCurrentStreak(cals, timezone = 'UTC') {
- const revCals = cals.slice().reverse();
+export function prepUniqueDays(cals, tz = 'UTC') {
- if (dayCount([moment().tz(timezone), revCals[0]], timezone) > daysBetween) {
+ return _(cals)
+ .map(ts => moment(ts).tz(tz).startOf('day').valueOf())
+ .uniq()
+ .sort()
+ .value();
+}
+
+export function calcCurrentStreak(cals, tz = 'UTC') {
+
+ let prev = _.last(cals);
+ if (moment().tz(tz).startOf('day').diff(prev, 'days') > daysBetween) {
return 0;
}
+ let currentStreak = 0;
+ let streakContinues = true;
+ _.forEachRight(cals, cur => {
+ if (moment(prev).diff(cur, 'days') < daysBetween) {
+ prev = cur;
+ currentStreak++;
+ } else {
+ // current streak found
+ streakContinues = false;
+ }
+ return streakContinues;
+ });
- let streakBroken = false;
- const lastDayInStreak = revCals
- .reduce((current, cal, index) => {
- const before = revCals[index === 0 ? 0 : index - 1];
- if (
- !streakBroken &&
- moment(before).tz(timezone).diff(cal, 'days', true) < daysBetween
- ) {
- return index;
- }
- streakBroken = true;
- return current;
- }, 0);
-
- const lastTimestamp = revCals[lastDayInStreak];
- return dayCount([moment().tz(timezone), lastTimestamp], timezone);
+ return currentStreak;
}
-export function calcLongestStreak(cals, timezone = 'UTC') {
+export function calcLongestStreak(cals, tz = 'UTC') {
+
let tail = cals[0];
const longest = cals.reduce((longest, head, index) => {
const last = cals[index === 0 ? 0 : index - 1];
// is streak broken
- if (moment(head).tz(timezone).diff(last, 'days', true) > daysBetween) {
+ if (moment(head).tz(tz).diff(moment(last).tz(tz), 'days') > daysBetween) {
tail = head;
}
- if (dayCount(longest, timezone) < dayCount([head, tail], timezone)) {
+ if (dayCount(longest, tz) < dayCount([head, tail], tz)) {
return [head, tail];
}
return longest;
}, [cals[0], cals[0]]);
- return dayCount(longest, timezone);
+ return dayCount(longest, tz);
}
View
7 test/server/utils/date-utils-test.js
@@ -3,6 +3,7 @@ import moment from 'moment-timezone';
import { dayCount } from '../../../server/utils/date-utils';
let test = require('tape');
+const PST = 'America/Los_Angeles';
test('Day count between two epochs (inclusive) calculation', function (t) {
t.plan(7);
@@ -25,18 +26,18 @@ test('Day count between two epochs (inclusive) calculation', function (t) {
t.equal(dayCount([
moment.utc("8/4/2015 1:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("8/3/2015 23:00", "M/D/YYYY H:mm").valueOf()
- ]), 2, "should return 2 days when the diff is less than 24h but days are different in default timezone UTC");
+ ]), 2, "should return 2 days when the diff is less than 24h but days are different in UTC");
t.equal(dayCount([
moment.utc("8/4/2015 1:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("8/3/2015 23:00", "M/D/YYYY H:mm").valueOf()
- ], 'America/Los_Angeles'), 1, "should return 1 day when the diff is less than 24h and days are different in UTC, but given 'America/Los_Angeles' timezone");
+ ], PST), 1, "should return 1 day when the diff is less than 24h and days are different in UTC, but given PST");
t.equal(dayCount([
moment.utc("10/27/2015 1:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("5/12/1982 1:00", "M/D/YYYY H:mm").valueOf()
]), 12222, "should return correct count when there is very big period");
-
+
t.equal(dayCount([
moment.utc("8/4/2015 2:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("8/3/2015 2:00", "M/D/YYYY H:mm").valueOf()
View
206 test/server/utils/user-stats-test.js
@@ -1,31 +1,78 @@
import moment from 'moment-timezone';
+import sinon from 'sinon';
-import { calcCurrentStreak, calcLongestStreak } from '../../../server/utils/user-stats';
+import {
+ prepUniqueDays,
+ calcCurrentStreak,
+ calcLongestStreak
+} from '../../../server/utils/user-stats';
let test = require('tape');
+let clock = sinon.useFakeTimers(1454526000000); // setting now to 2016-02-03T11:00:00 (PST)
+const PST = 'America/Los_Angeles';
+
+test('Prepare calendar items', function (t) {
+
+ t.plan(5);
+
+ t.deepEqual(prepUniqueDays([
+ moment.utc("8/3/2015 2:00", "M/D/YYYY H:mm").valueOf(),
+ moment.utc("8/3/2015 14:00", "M/D/YYYY H:mm").valueOf(),
+ moment.utc("8/3/2015 20:00", "M/D/YYYY H:mm").valueOf()
+ ]), [1438560000000], "should return correct epoch when all entries fall into one day in UTC");
+
+ t.deepEqual(prepUniqueDays([
+ moment.utc("8/3/2015 2:00", "M/D/YYYY H:mm").valueOf(),
+ moment.utc("8/3/2015 2:00", "M/D/YYYY H:mm").valueOf()
+ ]), [1438560000000], "should return correct epoch when given two identical dates");
+
+
+ t.deepEqual(prepUniqueDays([
+ moment.utc("8/3/2015 2:00", "M/D/YYYY H:mm").valueOf(), // 8/2/2015 in America/Los_Angeles
+ moment.utc("8/3/2015 14:00", "M/D/YYYY H:mm").valueOf(),
+ moment.utc("8/3/2015 20:00", "M/D/YYYY H:mm").valueOf()
+ ], PST), [1438498800000, 1438585200000], "should return 2 epochs when dates fall into two days in PST");
+
+ t.deepEqual(prepUniqueDays([
+ moment.utc("8/1/2015 2:00", "M/D/YYYY H:mm").valueOf(),
+ moment.utc("3/3/2015 14:00", "M/D/YYYY H:mm").valueOf(),
+ moment.utc("9/30/2014 20:00", "M/D/YYYY H:mm").valueOf()
+ ]), [1412035200000, 1425340800000, 1438387200000], "should return 3 epochs when dates fall into three days");
+
+ t.deepEqual(prepUniqueDays([
+ 1438387200000, 1425340800000, 1412035200000
+ ]), [1412035200000, 1425340800000, 1438387200000], "should return same but sorted array if all input dates are start of day");
+
+});
test('Current streak calculation', function (t) {
- t.plan(9);
- t.equal(calcCurrentStreak([
+ t.plan(11);
+
+ t.equal(calcCurrentStreak(
+ prepUniqueDays([
moment.utc(moment.utc().subtract(1, 'hours')).valueOf()
- ]), 1, "should return 1 day when today one challenge was completed");
+ ])), 1, "should return 1 day when today one challenge was completed");
- t.equal(calcCurrentStreak([
+ t.equal(calcCurrentStreak(
+ prepUniqueDays([
moment.utc(moment.utc().subtract(1, 'hours')).valueOf(),
moment.utc(moment.utc().subtract(1, 'hours')).valueOf()
- ]), 1, "should return 1 day when today more than one challenge was completed");
+ ])), 1, "should return 1 day when today more than one challenge was completed");
- t.equal(calcCurrentStreak([
+ t.equal(calcCurrentStreak(
+ prepUniqueDays([
moment.utc("9/11/2015 4:00", "M/D/YYYY H:mm").valueOf()
- ]), 0, "should return 0 day when today 0 challenges were completed");
+ ])), 0, "should return 0 day when today 0 challenges were completed");
- t.equal(calcCurrentStreak([
+ t.equal(calcCurrentStreak(
+ prepUniqueDays([
moment.utc(moment.utc().subtract(1, 'days')).valueOf(),
moment.utc(moment.utc().subtract(1, 'hours')).valueOf()
- ]), 2, "should return 2 days when today and yesterday challenges were completed");
+ ])), 2, "should return 2 days when today and yesterday challenges were completed");
- t.equal(calcCurrentStreak([
+ t.equal(calcCurrentStreak(
+ prepUniqueDays([
moment.utc("8/3/2015 2:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("9/11/2015 4:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("9/12/2015 1:00", "M/D/YYYY H:mm").valueOf(),
@@ -37,54 +84,81 @@ test('Current streak calculation', function (t) {
moment.utc(moment.utc().subtract(2, 'days')).valueOf(),
moment.utc(moment.utc().subtract(1, 'days')).valueOf(),
moment.utc(moment.utc().subtract(1, 'hours')).valueOf()
- ]), 3, "should return 3 when today and for two days before user was activity");
+ ])), 3, "should return 3 when today and for two days before user was activity");
- t.equal(calcCurrentStreak([
- moment.utc(moment.utc().subtract(37, 'hours')).valueOf(),
- moment.utc(moment.utc().subtract(1, 'hours')).valueOf()
- ]), 1, "should return 1 when between todays challenge completion and yesterdays there is a 1.5 day (36 hours) long break");
+ t.equal(calcCurrentStreak(
+ prepUniqueDays([
+ moment.utc(moment.utc().subtract(47, 'hours')).valueOf(),
+ moment.utc(moment.utc().subtract(11, 'hours')).valueOf()
+ ])), 1, "should return 1 when there is 1.5 days long break and dates fall into two days separated by third");
- t.ok(calcCurrentStreak([
- moment.utc(moment.utc().subtract(35, 'hours')).valueOf(),
+ t.equal(calcCurrentStreak(
+ prepUniqueDays([
+ moment.utc(moment.utc().subtract(40, 'hours')).valueOf(),
moment.utc(moment.utc().subtract(1, 'hours')).valueOf()
- ]) >= 2, "should return not less than 2 days when between todays challenge completion and yesterdays there is less than 1.5 day (36 hours) long break");
+ ])), 2, "should return 2 when the break is more than 1.5 days but dates fall into two consecutive days");
- t.equal(calcCurrentStreak([
+ t.equal(calcCurrentStreak(
+ prepUniqueDays([
moment.utc(moment.utc().subtract(1, 'hours')).valueOf(),
moment.utc(moment.utc().subtract(1, 'hours')).valueOf()
- ], undefined), 1, "should return correct count in default timezone UTC given 'undefined' timezone");
-
- t.equal(calcCurrentStreak([
+ ]), undefined), 1, "should return correct count in default timezone UTC given 'undefined' timezone");
+
+ t.equal(calcCurrentStreak(
+ prepUniqueDays([
moment.utc(moment.utc().subtract(1, 'days')).valueOf(),
moment.utc(moment.utc().subtract(1, 'hours')).valueOf()
- ], 'America/Los_Angeles'), 2, "should return 2 days when today and yesterday challenges were completed given 'America/Los_Angeles' timezone");
+ ], PST), PST), 2, "should return 2 days when today and yesterday challenges were completed given PST");
+
+ t.equal(calcCurrentStreak(
+ prepUniqueDays([
+ 1453174506164, 1453175436725, 1453252466853, 1453294968225, 1453383782844,
+ 1453431903117, 1453471373080, 1453594733026, 1453645014058, 1453746762747,
+ 1453747659197, 1453748029416, 1453818029213, 1453951796007, 1453988570615,
+ 1454069704441, 1454203673979, 1454294055498, 1454333545125, 1454415163903,
+ 1454519128123, moment.tz(PST).valueOf()
+ ], PST), PST), 17, "should return 17 when there is no break in given timezone (but would be the break if in UTC)");
+
+ t.equal(calcCurrentStreak(
+ prepUniqueDays([
+ 1453174506164, 1453175436725, 1453252466853, 1453294968225, 1453383782844,
+ 1453431903117, 1453471373080, 1453594733026, 1453645014058, 1453746762747,
+ 1453747659197, 1453748029416, 1453818029213, 1453951796007, 1453988570615,
+ 1454069704441, 1454203673979, 1454294055498, 1454333545125, 1454415163903,
+ 1454519128123, moment.utc().valueOf()
+ ])), 4, "should return 4 when there is a break in UTC (but would be no break in PST)");
});
test('Longest streak calculation', function (t) {
- t.plan(12);
+ t.plan(14);
- t.equal(calcLongestStreak([
+ t.equal(calcLongestStreak(
+ prepUniqueDays([
moment.utc("9/12/2015 4:00", "M/D/YYYY H:mm").valueOf()
- ]), 1, "should return 1 when there is the only one one-day-long streak available");
+ ])), 1, "should return 1 when there is the only one one-day-long streak available");
- t.equal(calcLongestStreak([
+ t.equal(calcLongestStreak(
+ prepUniqueDays([
moment.utc("9/11/2015 4:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("9/12/2015 2:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("9/13/2015 3:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("9/14/2015 1:00", "M/D/YYYY H:mm").valueOf()
- ]), 4, "should return 4 when there is the only one more-than-one-days-long streak available");
+ ])), 4, "should return 4 when there is the only one more-than-one-days-long streak available");
- t.equal(calcLongestStreak([
+ t.equal(calcLongestStreak(
+ prepUniqueDays([
moment.utc(moment.utc().subtract(1, 'hours')).valueOf()
- ]), 1, "should return 1 when there is only one one-day-long streak and it is today");
+ ])), 1, "should return 1 when there is only one one-day-long streak and it is today");
- t.equal(calcLongestStreak([
+ t.equal(calcLongestStreak(
+ prepUniqueDays([
moment.utc(moment.utc().subtract(1, 'days')).valueOf(),
moment.utc(moment.utc().subtract(1, 'hours')).valueOf()
- ]), 2, "should return 2 when yesterday and today makes longest streak");
+ ])), 2, "should return 2 when yesterday and today makes longest streak");
- t.equal(calcLongestStreak([
+ t.equal(calcLongestStreak(
+ prepUniqueDays([
moment.utc("8/3/2015 2:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("9/11/2015 4:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("9/12/2015 2:00", "M/D/YYYY H:mm").valueOf(),
@@ -93,19 +167,21 @@ test('Longest streak calculation', function (t) {
moment.utc("10/6/2015 4:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("10/7/2015 5:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("11/3/2015 2:00", "M/D/YYYY H:mm").valueOf()
- ]), 4, "should return 4 when there is a month long break");
+ ])), 4, "should return 4 when there is a month long break");
- t.equal(calcLongestStreak([
+ t.equal(calcLongestStreak(
+ prepUniqueDays([
moment.utc("8/3/2015 2:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("9/11/2015 4:00", "M/D/YYYY H:mm").valueOf(),
- moment.utc("9/12/2015 1:00", "M/D/YYYY H:mm").valueOf(),
- moment.utc(moment.utc("9/12/2015 1:00", "M/D/YYYY H:mm").add(37, 'hours')).valueOf(),
+ moment.utc("9/12/2015 15:30", "M/D/YYYY H:mm").valueOf(),
+ moment.utc(moment.utc("9/12/2015 15:30", "M/D/YYYY H:mm").add(37, 'hours')).valueOf(),
moment.utc("9/14/2015 22:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("9/15/2015 4:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("10/3/2015 2:00", "M/D/YYYY H:mm").valueOf()
- ]), 3, "should return 3 when there is a more than 1.5 days long break of (36 hours)");
+ ])), 2, "should return 2 when there is a more than 1.5 days long break of (36 hours)");
- t.equal(calcLongestStreak([
+ t.equal(calcLongestStreak(
+ prepUniqueDays([
moment.utc("8/3/2015 2:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("9/11/2015 4:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("9/12/2015 1:00", "M/D/YYYY H:mm").valueOf(),
@@ -117,9 +193,10 @@ test('Longest streak calculation', function (t) {
moment.utc(moment.utc().subtract(2, 'days')).valueOf(),
moment.utc(moment.utc().subtract(1, 'days')).valueOf(),
moment.utc().valueOf()
- ]), 4, "should return 4 when the longest streak consist of several same day timestamps");
+ ])), 4, "should return 4 when the longest streak consist of several same day timestamps");
- t.equal(calcLongestStreak([
+ t.equal(calcLongestStreak(
+ prepUniqueDays([
moment.utc("8/3/2015 2:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("9/11/2015 4:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("9/12/2015 1:00", "M/D/YYYY H:mm").valueOf(),
@@ -129,32 +206,57 @@ test('Longest streak calculation', function (t) {
moment.utc("10/12/2015 1:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("10/13/2015 4:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("10/14/2015 5:00", "M/D/YYYY H:mm").valueOf()
- ]), 4, "should return 4 when there are several longest streaks (same length)");
+ ])), 4, "should return 4 when there are several longest streaks (same length)");
let cals = [];
const n = 100;
for (var i = 0; i < n; i++) {
cals.push(moment.utc(moment.utc().subtract(i, 'days')).valueOf());
}
- cals.sort();
- t.equal(calcLongestStreak(cals), n, "should return correct longest streak when there is a very long period");
+ t.equal(calcLongestStreak(prepUniqueDays(cals)), n, "should return correct longest streak when there is a very long period");
- t.equal(calcLongestStreak([
+ t.equal(calcLongestStreak(
+ prepUniqueDays([
moment.utc(moment.utc().subtract(1, 'days')).valueOf(),
moment.utc(moment.utc().subtract(1, 'hours')).valueOf()
- ], undefined), 2, "should return correct longest streak in default timezone UTC given 'undefined' timezone");
+ ]), undefined), 2, "should return correct longest streak in default timezone UTC given 'undefined' timezone");
- t.equal(calcLongestStreak([
+ t.equal(calcLongestStreak(
+ prepUniqueDays([
moment.utc("9/11/2015 4:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("9/12/2015 2:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("9/13/2015 3:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("9/14/2015 1:00", "M/D/YYYY H:mm").valueOf()
- ], 'America/Los_Angeles'), 4, "should return 4 when there is the only one more-than-one-days-long streak available given 'America/Los_Angeles' timezone");
+ ]), PST), 4, "should return 4 when there is the only one more-than-one-days-long streak available given PST");
- t.equal(calcLongestStreak([
+ t.equal(calcLongestStreak(
+ prepUniqueDays([
moment.utc("9/11/2015 23:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("9/12/2015 2:00", "M/D/YYYY H:mm").valueOf(),
moment.utc("9/13/2015 2:00", "M/D/YYYY H:mm").valueOf(),
- moment.utc("9/14/2015 1:00", "M/D/YYYY H:mm").valueOf()
- ], 'America/Los_Angeles'), 3, "should return 3 when longest streak is 3 in given 'America/Los_Angeles' timezone (but would be different in default timezone UTC)");
+ moment.utc("9/14/2015 6:00", "M/D/YYYY H:mm").valueOf()
+ ], PST), PST), 3, "should return 3 when longest streak is 3 in PST (but would be different in default timezone UTC)");
+
+ t.equal(calcLongestStreak(
+ prepUniqueDays([
+ 1453174506164, 1453175436725, 1453252466853, 1453294968225, 1453383782844,
+ 1453431903117, 1453471373080, 1453594733026, 1453645014058, 1453746762747,
+ 1453747659197, 1453748029416, 1453818029213, 1453951796007, 1453988570615,
+ 1454069704441, 1454203673979, 1454294055498, 1454333545125, 1454415163903,
+ 1454519128123, moment.tz(PST).valueOf()
+ ], PST), PST), 17, "should return 17 when there is no break in PST (but would be break in UTC) and it is current");
+
+ t.equal(calcLongestStreak(
+ prepUniqueDays([
+ 1453174506164, 1453175436725, 1453252466853, 1453294968225, 1453383782844,
+ 1453431903117, 1453471373080, 1453594733026, 1453645014058, 1453746762747,
+ 1453747659197, 1453748029416, 1453818029213, 1453951796007, 1453988570615,
+ 1454069704441, 1454203673979, 1454294055498, 1454333545125, 1454415163903,
+ 1454519128123, moment.utc().valueOf()
+ ])), 4, "should return 4 when there is a break in UTC (but no break in PST)");
+
+});
+
+test.onFinish(() => {
+ clock.restore();
});

0 comments on commit 631c7ea

Please sign in to comment.
Something went wrong with that request. Please try again.