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Implement simple feedback for wzulfikar#8.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,144 @@ | ||
| import { useState, useEffect, useRef } from 'react' | ||
| import format from 'comma-number' | ||
|
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| export function SimpleFeedback({ slug }) { | ||
| const [helpful, setHelpful] = useState(null) | ||
| const [count, setCount] = useState({ helpful: 0, not_helpful: 0 }) | ||
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| const uuidRef = useRef(null) | ||
| const mountedRef = useRef(null) | ||
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| useEffect(() => { | ||
| mountedRef.current = true | ||
| import('device-uuid').then((mod) => { | ||
| const uuid = new mod.DeviceUUID().get() | ||
| uuidRef.current = uuid | ||
| syncFeedback(uuid) | ||
| }) | ||
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| return () => { | ||
| mountedRef.current = false | ||
| } | ||
| }, [slug]) | ||
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| function syncFeedback(uuid) { | ||
| fetch(`/api/feedbacks/${slug}?uuid=${uuid}`) | ||
| .then((res) => res.json()) | ||
| .then( | ||
| ({ helpful: countHelpful, not_helpful: countNotHelpful, feedback }) => { | ||
| if (!mountedRef.current) return | ||
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| const userFeedback = | ||
| feedback === 'helpful' | ||
| ? true | ||
| : feedback === 'not_helpful' | ||
| ? false | ||
| : null | ||
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|
||
| if (userFeedback !== helpful) { | ||
| setHelpful(userFeedback) | ||
| } | ||
|
|
||
| if ( | ||
| count.helpful !== countHelpful || | ||
| count.not_helpful !== countNotHelpful | ||
| ) { | ||
| setCount({ helpful: countHelpful, not_helpful: countNotHelpful }) | ||
| } | ||
| } | ||
| ) | ||
| } | ||
|
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| function sendFeedback(isHelpful) { | ||
| // Add feedback or remove | ||
| const prevState = | ||
| helpful === true ? 'helpful' : helpful === false ? 'not_helpful' : null | ||
| const newVal = helpful === isHelpful ? null : isHelpful | ||
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| setHelpful(newVal) | ||
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| // Optimistic update | ||
| const newCount = { ...count } | ||
| if (newVal === true) { | ||
| newCount.helpful++ | ||
| } else if (newVal === false) { | ||
| newCount.not_helpful++ | ||
| } | ||
|
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| if (prevState !== null) { | ||
| newCount[prevState]-- | ||
| } | ||
| setCount(newCount) | ||
|
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| fetch(`/api/feedbacks/${slug}`, { | ||
| method: 'POST', | ||
| headers: { | ||
| 'Content-Type': 'application/json' | ||
| }, | ||
| body: JSON.stringify({ | ||
| uuid: uuidRef.current, | ||
| helpful: newVal, | ||
| prevState: prevState | ||
| }) | ||
| }).then((res) => { | ||
| syncFeedback(uuidRef.current) | ||
| }) | ||
| } | ||
|
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||
| return ( | ||
| <> | ||
| <style jsx>{` | ||
| .container { | ||
| display: flex; | ||
| align-items: baseline; | ||
| } | ||
| .btn-feedback { | ||
| margin: 0px 5px; | ||
| padding: 0; | ||
| background: none; | ||
| border: none; | ||
| cursor: pointer; | ||
| font-size: unset; | ||
| } | ||
| @media only screen and (max-width: 600px) { | ||
| .container { | ||
| flex-direction: column; | ||
| } | ||
| .btn-feedback:first-child { | ||
| margin-left: 0px; | ||
| } | ||
| } | ||
| `}</style> | ||
| <div className='container'> | ||
| <div>Was this helpful?</div> | ||
| <div> | ||
| <button | ||
| className='btn-feedback' | ||
| onClick={() => sendFeedback(true)} | ||
| style={{ | ||
| color: helpful === true ? '#4c8bf3' : 'unset', | ||
| textDecoration: helpful === true ? 'underline 2px' : undefined | ||
| }} | ||
| > | ||
| Yes{' '} | ||
| {helpful === null || | ||
| (count.helpful > 0 && `(${format(count.helpful)})`)} | ||
| </button> | ||
| <span>·</span> | ||
| <button | ||
| className='btn-feedback' | ||
| onClick={() => sendFeedback(false)} | ||
| style={{ | ||
| color: helpful === false ? '#4c8bf3' : 'unset', | ||
| textDecoration: helpful === false ? 'underline 2px' : undefined | ||
| }} | ||
| > | ||
| No{' '} | ||
| {helpful === null || | ||
| (count.not_helpful > 0 && `(${format(count.not_helpful)})`)} | ||
| </button> | ||
| </div> | ||
| </div> | ||
| </> | ||
| ) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| import * as firestore from '@google-cloud/firestore' | ||
| import * as db from '@lib/db' | ||
|
|
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| export default async function handler(req, res) { | ||
| if (req.method === 'POST') { | ||
| const { uuid, helpful, prevState } = req.body | ||
|
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| const increment = firestore.FieldValue.increment(1) | ||
| const decrement = firestore.FieldValue.increment(-1) | ||
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| const slugRef = db.feedbacks.doc(req.query.slug) | ||
| const voterRef = db.db | ||
| .collection(`/${db.collections.feedbacks}/${req.query.slug}/voters`) | ||
| .doc(uuid) | ||
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| await db.db.runTransaction(async (tx) => { | ||
| const feedback = | ||
| helpful === true ? 'helpful' : helpful === false ? 'not_helpful' : null | ||
|
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| const payload = { | ||
| count: helpful === null ? decrement : increment | ||
| } as any | ||
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| if (feedback === 'helpful') { | ||
| payload.helpful = increment | ||
| } else if (feedback === 'not_helpful') { | ||
| payload.not_helpful = increment | ||
| } | ||
|
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| if (prevState !== null) { | ||
| payload[prevState] = decrement | ||
| } | ||
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| tx.set(slugRef, payload, { merge: true }) | ||
| tx.set(voterRef, { feedback }, { merge: true }) | ||
| }) | ||
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| const data = (await slugRef.get()).data() | ||
|
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| return res.status(200).json({ | ||
| helpful: data.helpful, | ||
| not_helpful: data.not_helpful | ||
| }) | ||
| } | ||
|
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| if (req.method === 'GET') { | ||
| const { slug, uuid } = req.query | ||
| const [snapshot, voter] = await Promise.all([ | ||
| db.feedbacks.doc(slug).get(), | ||
| db.db | ||
| .collection(`/${db.collections.feedbacks}/${req.query.slug}/voters`) | ||
| .doc(uuid) | ||
| .get() | ||
| ]) | ||
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| const { helpful, not_helpful } = snapshot.data() || {} | ||
| const feedback = voter.data()?.feedback || null | ||
|
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| return res.status(200).json({ helpful, not_helpful, feedback }) | ||
| } | ||
| } |
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