53 lines
1.4 KiB
JavaScript
53 lines
1.4 KiB
JavaScript
import hash from 'string-hash';
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import Account from './ui/account';
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const experiments = {
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signin_button_color: {
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eligible: function() {
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return true;
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},
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variant: function() {
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return ['white-blue', 'blue', 'white-violet', 'violet'][
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Math.floor(Math.random() * 4)
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];
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},
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run: function(variant, state) {
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const account = state.cache(Account, 'account');
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account.buttonClass = variant;
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}
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}
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};
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//Returns a number between 0 and 1
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// eslint-disable-next-line no-unused-vars
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function luckyNumber(str) {
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return hash(str) / 0xffffffff;
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}
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function checkExperiments(state, emitter) {
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const all = Object.keys(experiments);
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const id = all.find(id => experiments[id].eligible(state));
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if (id) {
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const variant = experiments[id].variant(state);
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state.storage.enroll(id, variant);
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experiments[id].run(variant, state, emitter);
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}
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}
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export default function initialize(state, emitter) {
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emitter.on('DOMContentLoaded', () => {
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const xp = experiments[state.query.x];
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if (xp) {
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xp.run(+state.query.v, state, emitter);
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}
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});
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const enrolled = state.storage.enrolled;
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// single experiment per session for now
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const id = Object.keys(enrolled)[0];
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if (Object.keys(experiments).includes(id)) {
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experiments[id].run(enrolled[id], state, emitter);
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} else {
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checkExperiments(state, emitter);
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}
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}
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