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Add documentation for AppUsage

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Also make ternary operators easier to read.
This commit is contained in:
chrisgarrity 2017-08-23 11:53:13 -04:00
parent 7a530be88b
commit 0f2c31bfc9
1 changed files with 15 additions and 2 deletions
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17
src/utils/AppUsage.js
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@ -7,22 +7,35 @@ export default class AppUsage {
return currentUsage; return currentUsage;
} }
/**
* Initialize currentUsage for attaching to Analytics events from
* the usage cookie if it is set. currentUsage is blank if the cookie is
* not set.
*/
static initUsage () { static initUsage () {
const usageCookie = Cookie.get('usage'); const usageCookie = Cookie.get('usage');
currentUsage = usageCookie ? usageCookie + '::' : ''; currentUsage = (usageCookie) ? usageCookie + '::' : '';
} }
/**
* Check whether the App should ask for the usage data (first time launched)
* @return {boolean} True if the usage cookie has never been set
*/
static askForUsage () { static askForUsage () {
var usageCookie = Cookie.get('usage'); var usageCookie = Cookie.get('usage');
return usageCookie === null; return usageCookie === null;
} }
/**
* Set the usage cookie for tracking Analytics Events
* @param {string} kind answer from user to the usage survey (home, school, other, noanswer)
*/
static setUsage (kind) { static setUsage (kind) {
if (kind === '') { if (kind === '') {
Cookie.set('usage', 'noanswer'); Cookie.set('usage', 'noanswer');
} else { } else {
Cookie.set('usage', kind); Cookie.set('usage', kind);
} }
currentUsage = kind === 'noanswer' ? '' : '_' + kind; currentUsage = (kind === '') ? 'noanswer::' : kind + '::';
} }
} }