76 lines
2 KiB
JavaScript
76 lines
2 KiB
JavaScript
import hash from 'string-hash';
|
|
|
|
const experiments = {
|
|
'5YHCzn2CQTmBwWwTmZupBA': {
|
|
id: '5YHCzn2CQTmBwWwTmZupBA',
|
|
run: function(variant, state, emitter) {
|
|
state.experiment = {
|
|
xid: this.id,
|
|
xvar: variant
|
|
};
|
|
// Beefy UI
|
|
if (variant === 1) {
|
|
state.config.uploadWindowStyle = 'upload-window upload-window-b';
|
|
state.config.uploadButtonStyle = 'btn browse browse-b';
|
|
} else {
|
|
state.config.uploadWindowStyle = 'upload-window';
|
|
state.config.uploadButtonStyle = 'btn browse';
|
|
}
|
|
emitter.emit('render');
|
|
},
|
|
eligible: function(state) {
|
|
return this.luckyNumber(state) >= 0.5;
|
|
},
|
|
variant: function(state) {
|
|
return this.luckyNumber(state) < 0.5 ? 0 : 1;
|
|
},
|
|
luckyNumber: function(state) {
|
|
return luckyNumber(
|
|
`${this.id}:${state.storage.get('testpilot_ga__cid')}`
|
|
);
|
|
}
|
|
}
|
|
};
|
|
|
|
//Returns a number between 0 and 1
|
|
function luckyNumber(str) {
|
|
return hash(str) / 0xffffffff;
|
|
}
|
|
|
|
function checkExperiments(state, emitter) {
|
|
const all = Object.keys(experiments);
|
|
const id = all.find(id => experiments[id].eligible(state));
|
|
if (id) {
|
|
const variant = experiments[id].variant(state);
|
|
state.storage.enroll(id, variant);
|
|
experiments[id].run(variant, state, emitter);
|
|
}
|
|
}
|
|
|
|
export default function initialize(state, emitter) {
|
|
emitter.on('DOMContentLoaded', () => {
|
|
const xp = experiments[state.query.x];
|
|
if (xp) {
|
|
xp.run(state.query.v, state, emitter);
|
|
}
|
|
});
|
|
|
|
if (!state.storage.get('testpilot_ga__cid')) {
|
|
// first ever visit. check again after cid is assigned.
|
|
emitter.on('DOMContentLoaded', () => {
|
|
checkExperiments(state, emitter);
|
|
});
|
|
} else {
|
|
const enrolled = state.storage.enrolled;
|
|
enrolled.forEach(([id, variant]) => {
|
|
const xp = experiments[id];
|
|
if (xp) {
|
|
xp.run(variant, state, emitter);
|
|
}
|
|
});
|
|
// single experiment per session for now
|
|
if (enrolled.length === 0) {
|
|
checkExperiments(state, emitter);
|
|
}
|
|
}
|
|
}
|