stacker.news/api/resolvers/item.js

1074 lines
34 KiB
JavaScript

import { UserInputError, AuthenticationError } from 'apollo-server-micro'
import { ensureProtocol } from '../../lib/url'
import serialize from './serial'
import { decodeCursor, LIMIT, nextCursorEncoded } from '../../lib/cursor'
import { getMetadata, metadataRuleSets } from 'page-metadata-parser'
import domino from 'domino'
import {
BOOST_MIN, ITEM_SPAM_INTERVAL, MAX_POLL_NUM_CHOICES,
MAX_TITLE_LENGTH, ITEM_FILTER_THRESHOLD, DONT_LIKE_THIS_COST
} from '../../lib/constants'
import { mdHas } from '../../lib/md'
async function comments (me, models, id, sort) {
let orderBy
switch (sort) {
case 'top':
orderBy = `ORDER BY ${await orderByNumerator(me, models)} DESC, "Item".id DESC`
break
case 'recent':
orderBy = 'ORDER BY "Item".created_at DESC, "Item".id DESC'
break
default:
orderBy = `ORDER BY ${await orderByNumerator(me, models)}/POWER(EXTRACT(EPOCH FROM ((NOW() AT TIME ZONE 'UTC') - "Item".created_at))/3600+2, 1.3) DESC NULLS LAST, "Item".id DESC`
break
}
const flat = await models.$queryRaw(`
WITH RECURSIVE base AS (
${SELECT}, ARRAY[row_number() OVER (${orderBy}, "Item".path)] AS sort_path
FROM "Item"
WHERE "parentId" = $1
${await filterClause(me, models)}
UNION ALL
${SELECT}, p.sort_path || row_number() OVER (${orderBy}, "Item".path)
FROM base p
JOIN "Item" ON "Item"."parentId" = p.id
WHERE true
${await filterClause(me, models)})
SELECT * FROM base ORDER BY sort_path`, Number(id))
return nestComments(flat, id)[0]
}
export async function getItem (parent, { id }, { me, models }) {
const [item] = await models.$queryRaw(`
${SELECT}
FROM "Item"
WHERE id = $1`, Number(id))
return item
}
function topClause (within) {
let interval = ' AND "Item".created_at >= $1 - INTERVAL '
switch (within) {
case 'day':
interval += "'1 day'"
break
case 'week':
interval += "'7 days'"
break
case 'month':
interval += "'1 month'"
break
case 'year':
interval += "'1 year'"
break
default:
interval = ''
break
}
return interval
}
export async function orderByNumerator (me, models) {
if (me) {
const user = await models.user.findUnique({ where: { id: me.id } })
if (user.wildWestMode) {
return 'GREATEST("Item"."weightedVotes", POWER("Item"."weightedVotes", 1.2))'
}
}
return `(CASE WHEN "Item"."weightedVotes" > "Item"."weightedDownVotes"
THEN 1
ELSE -1 END
* GREATEST(ABS("Item"."weightedVotes" - "Item"."weightedDownVotes"), POWER(ABS("Item"."weightedVotes" - "Item"."weightedDownVotes"), 1.2)))`
}
export async function filterClause (me, models) {
if (me) {
const user = await models.user.findUnique({ where: { id: me.id } })
if (user.wildWestMode) {
return ''
}
}
// if the item is above the threshold or is mine
let clause = ` AND ("Item"."weightedVotes" - "Item"."weightedDownVotes" > -${ITEM_FILTER_THRESHOLD}`
if (me) {
clause += ` OR "Item"."userId" = ${me.id}`
}
clause += ')'
return clause
}
export default {
Query: {
itemRepetition: async (parent, { parentId }, { me, models }) => {
if (!me) return 0
// how many of the parents starting at parentId belong to me
const [{ item_spam: count }] = await models.$queryRaw(`SELECT item_spam($1, $2, '${ITEM_SPAM_INTERVAL}')`,
Number(parentId), Number(me.id))
return count
},
items: async (parent, { sub, sort, cursor, name, within }, { me, models }) => {
const decodedCursor = decodeCursor(cursor)
let items; let user; let pins; let subFull
const subClause = (num) => {
return sub ? ` AND "subName" = $${num} ` : ` AND ("subName" IS NULL OR "subName" = $${num}) `
}
const activeOrMine = () => {
return me ? ` AND (status <> 'STOPPED' OR "userId" = ${me.id}) ` : ' AND status <> \'STOPPED\' '
}
switch (sort) {
case 'user':
if (!name) {
throw new UserInputError('must supply name', { argumentName: 'name' })
}
user = await models.user.findUnique({ where: { name } })
if (!user) {
throw new UserInputError('no user has that name', { argumentName: 'name' })
}
items = await models.$queryRaw(`
${SELECT}
FROM "Item"
WHERE "userId" = $1 AND "parentId" IS NULL AND created_at <= $2
AND "pinId" IS NULL
${activeOrMine()}
${await filterClause(me, models)}
ORDER BY created_at DESC
OFFSET $3
LIMIT ${LIMIT}`, user.id, decodedCursor.time, decodedCursor.offset)
break
case 'recent':
items = await models.$queryRaw(`
${SELECT}
FROM "Item"
WHERE "parentId" IS NULL AND created_at <= $1
${subClause(3)}
${activeOrMine()}
${await filterClause(me, models)}
ORDER BY created_at DESC
OFFSET $2
LIMIT ${LIMIT}`, decodedCursor.time, decodedCursor.offset, sub || 'NULL')
break
case 'top':
items = await models.$queryRaw(`
${SELECT}
FROM "Item"
WHERE "parentId" IS NULL AND "Item".created_at <= $1
AND "pinId" IS NULL
${topClause(within)}
${await filterClause(me, models)}
${await topOrderByWeightedSats(me, models)}
OFFSET $2
LIMIT ${LIMIT}`, decodedCursor.time, decodedCursor.offset)
break
default:
// sub so we know the default ranking
if (sub) {
subFull = await models.sub.findUnique({ where: { name: sub } })
}
switch (subFull?.rankingType) {
case 'AUCTION':
// it might be sufficient to sort by the floor(maxBid / 1000) desc, created_at desc
// we pull from their wallet
// TODO: need to filter out by payment status
items = await models.$queryRaw(`
SELECT *
FROM (
(${SELECT}
FROM "Item"
WHERE "parentId" IS NULL AND created_at <= $1
AND "pinId" IS NULL
${subClause(3)}
AND status = 'ACTIVE'
ORDER BY "maxBid" DESC, created_at ASC)
UNION ALL
(${SELECT}
FROM "Item"
WHERE "parentId" IS NULL AND created_at <= $1
AND "pinId" IS NULL
${subClause(3)}
AND status = 'NOSATS'
ORDER BY created_at DESC)
) a
OFFSET $2
LIMIT ${LIMIT}`, decodedCursor.time, decodedCursor.offset, sub)
break
default:
// HACK we can speed hack the first hot page, by limiting our query to only
// the most recently created items so that the tables doesn't have to
// fully be computed
// if the offset is 0, we limit our search to posts from the last week
// if there are 21 items, return them ... if not do the unrestricted query
// instead of doing this we should materialize a view ... but this is easier for now
if (decodedCursor.offset === 0) {
items = await models.$queryRaw(`
${SELECT}
FROM "Item"
WHERE "parentId" IS NULL AND "Item".created_at <= $1 AND "Item".created_at > $3
AND "pinId" IS NULL
${subClause(4)}
${await filterClause(me, models)}
${await newTimedOrderByWeightedSats(me, models, 1)}
OFFSET $2
LIMIT ${LIMIT}`, decodedCursor.time, decodedCursor.offset, new Date(new Date().setDate(new Date().getDate() - 5)), sub || 'NULL')
}
if (decodedCursor.offset !== 0 || items?.length < LIMIT) {
items = await models.$queryRaw(`
${SELECT}
FROM "Item"
WHERE "parentId" IS NULL AND "Item".created_at <= $1
AND "pinId" IS NULL
${subClause(3)}
${await filterClause(me, models)}
${await newTimedOrderByWeightedSats(me, models, 1)}
OFFSET $2
LIMIT ${LIMIT}`, decodedCursor.time, decodedCursor.offset, sub || 'NULL')
}
if (decodedCursor.offset === 0) {
// get pins for the page and return those separately
pins = await models.$queryRaw(`SELECT rank_filter.*
FROM (
${SELECT},
rank() OVER (
PARTITION BY "pinId"
ORDER BY created_at DESC
)
FROM "Item"
WHERE "pinId" IS NOT NULL
) rank_filter WHERE RANK = 1`)
}
break
}
break
}
return {
cursor: items.length === LIMIT ? nextCursorEncoded(decodedCursor) : null,
items,
pins
}
},
allItems: async (parent, { cursor }, { me, models }) => {
const decodedCursor = decodeCursor(cursor)
const items = await models.$queryRaw(`
${SELECT}
FROM "Item"
${await filterClause(me, models)}
ORDER BY created_at DESC
OFFSET $1
LIMIT ${LIMIT}`, decodedCursor.offset)
return {
cursor: items.length === LIMIT ? nextCursorEncoded(decodedCursor) : null,
items
}
},
outlawedItems: async (parent, { cursor }, { me, models }) => {
const decodedCursor = decodeCursor(cursor)
const notMine = () => {
return me ? ` AND "userId" <> ${me.id} ` : ''
}
const items = await models.$queryRaw(`
${SELECT}
FROM "Item"
WHERE "Item"."weightedVotes" - "Item"."weightedDownVotes" <= -${ITEM_FILTER_THRESHOLD}
${notMine()}
ORDER BY created_at DESC
OFFSET $1
LIMIT ${LIMIT}`, decodedCursor.offset)
return {
cursor: items.length === LIMIT ? nextCursorEncoded(decodedCursor) : null,
items
}
},
borderlandItems: async (parent, { cursor }, { me, models }) => {
const decodedCursor = decodeCursor(cursor)
const notMine = () => {
return me ? ` AND "userId" <> ${me.id} ` : ''
}
const items = await models.$queryRaw(`
${SELECT}
FROM "Item"
WHERE "Item"."weightedVotes" - "Item"."weightedDownVotes" < 0
AND "Item"."weightedVotes" - "Item"."weightedDownVotes" > -${ITEM_FILTER_THRESHOLD}
${notMine()}
ORDER BY created_at DESC
OFFSET $1
LIMIT ${LIMIT}`, decodedCursor.offset)
return {
cursor: items.length === LIMIT ? nextCursorEncoded(decodedCursor) : null,
items
}
},
moreFlatComments: async (parent, { cursor, name, sort, within }, { me, models }) => {
const decodedCursor = decodeCursor(cursor)
let comments, user
switch (sort) {
case 'recent':
comments = await models.$queryRaw(`
${SELECT}
FROM "Item"
WHERE "parentId" IS NOT NULL AND created_at <= $1
${await filterClause(me, models)}
ORDER BY created_at DESC
OFFSET $2
LIMIT ${LIMIT}`, decodedCursor.time, decodedCursor.offset)
break
case 'user':
if (!name) {
throw new UserInputError('must supply name', { argumentName: 'name' })
}
user = await models.user.findUnique({ where: { name } })
if (!user) {
throw new UserInputError('no user has that name', { argumentName: 'name' })
}
comments = await models.$queryRaw(`
${SELECT}
FROM "Item"
WHERE "userId" = $1 AND "parentId" IS NOT NULL
AND created_at <= $2
${await filterClause(me, models)}
ORDER BY created_at DESC
OFFSET $3
LIMIT ${LIMIT}`, user.id, decodedCursor.time, decodedCursor.offset)
break
case 'top':
comments = await models.$queryRaw(`
${SELECT}
FROM "Item"
WHERE "parentId" IS NOT NULL
AND "Item".created_at <= $1
${topClause(within)}
${await filterClause(me, models)}
${await topOrderByWeightedSats(me, models)}
OFFSET $2
LIMIT ${LIMIT}`, decodedCursor.time, decodedCursor.offset)
break
default:
throw new UserInputError('invalid sort type', { argumentName: 'sort' })
}
return {
cursor: comments.length === LIMIT ? nextCursorEncoded(decodedCursor) : null,
comments
}
},
item: getItem,
pageTitle: async (parent, { url }, { models }) => {
try {
const response = await fetch(ensureProtocol(url), { redirect: 'follow' })
const html = await response.text()
const doc = domino.createWindow(html).document
const metadata = getMetadata(doc, url, { title: metadataRuleSets.title })
return metadata?.title
} catch (e) {
return null
}
},
dupes: async (parent, { url }, { models }) => {
const urlObj = new URL(ensureProtocol(url))
let uri = urlObj.hostname + urlObj.pathname
uri = uri.endsWith('/') ? uri.slice(0, -1) : uri
let similar = `(http(s)?://)?${uri}/?`
const whitelist = ['news.ycombinator.com/item', 'bitcointalk.org/index.php']
const youtube = ['www.youtube.com', 'youtu.be']
if (whitelist.includes(uri)) {
similar += `\\${urlObj.search}`
} else if (youtube.includes(urlObj.hostname)) {
// extract id and create both links
const matches = url.match(/(https?:\/\/)?((www\.)?(youtube(-nocookie)?|youtube.googleapis)\.com.*(v\/|v=|vi=|vi\/|e\/|embed\/|user\/.*\/u\/\d+\/)|youtu\.be\/)(?<id>[_0-9a-z-]+)/i)
similar = `(http(s)?://)?(www.youtube.com/watch\\?v=${matches?.groups?.id}|youtu.be/${matches?.groups?.id})`
} else {
similar += '((\\?|#)%)?'
}
return await models.$queryRaw(`
${SELECT}
FROM "Item"
WHERE url SIMILAR TO $1
ORDER BY created_at DESC
LIMIT 3`, similar)
},
comments: async (parent, { id, sort }, { me, models }) => {
return comments(me, models, id, sort)
},
search: async (parent, { q: query, sub, cursor }, { me, models, search }) => {
const decodedCursor = decodeCursor(cursor)
let sitems
try {
sitems = await search.search({
index: 'item',
size: LIMIT,
from: decodedCursor.offset,
body: {
query: {
bool: {
must: [
sub
? { match: { 'sub.name': sub } }
: { bool: { must_not: { exists: { field: 'sub.name' } } } },
me
? {
bool: {
should: [
{ match: { status: 'ACTIVE' } },
{ match: { userId: me.id } }
]
}
}
: { match: { status: 'ACTIVE' } },
{
bool: {
should: [
{
// all terms are matched in fields
multi_match: {
query,
type: 'most_fields',
fields: ['title^20', 'text'],
minimum_should_match: '100%',
boost: 400
}
},
{
// all terms are matched in fields
multi_match: {
query,
type: 'most_fields',
fields: ['title^20', 'text'],
fuzziness: 'AUTO',
prefix_length: 3,
minimum_should_match: '100%',
boost: 20
}
},
{
// only some terms must match
multi_match: {
query,
type: 'most_fields',
fields: ['title^20', 'text'],
fuzziness: 'AUTO',
prefix_length: 3,
minimum_should_match: '60%'
}
}
// TODO: add wildcard matches for
// user.name and url
]
}
}
],
filter: {
range: {
createdAt: {
lte: decodedCursor.time
}
}
}
}
},
highlight: {
fields: {
title: { number_of_fragments: 0, pre_tags: [':high['], post_tags: [']'] },
text: { number_of_fragments: 0, pre_tags: [':high['], post_tags: [']'] }
}
}
}
})
} catch (e) {
console.log(e)
return {
cursor: null,
items: []
}
}
// return highlights
const items = sitems.body.hits.hits.map(e => {
const item = e._source
item.searchTitle = (e.highlight.title && e.highlight.title[0]) || item.title
item.searchText = (e.highlight.text && e.highlight.text[0]) || item.text
return item
})
return {
cursor: items.length === LIMIT ? nextCursorEncoded(decodedCursor) : null,
items
}
},
auctionPosition: async (parent, { id, sub, bid }, { models }) => {
// count items that have a bid gte to the current bid or
// gte current bid and older
const where = {
where: {
subName: sub,
status: 'ACTIVE',
maxBid: {
gte: bid
}
}
}
if (id) {
where.where.id = { not: Number(id) }
}
return await models.item.count(where) + 1
}
},
Mutation: {
upsertLink: async (parent, args, { me, models }) => {
const { id, ...data } = args
data.url = ensureProtocol(data.url)
if (id) {
return await updateItem(parent, { id, data }, { me, models })
} else {
return await createItem(parent, data, { me, models })
}
},
upsertDiscussion: async (parent, args, { me, models }) => {
const { id, ...data } = args
if (id) {
return await updateItem(parent, { id, data }, { me, models })
} else {
return await createItem(parent, data, { me, models })
}
},
upsertPoll: async (parent, { id, forward, boost, title, text, options }, { me, models }) => {
if (!me) {
throw new AuthenticationError('you must be logged in')
}
if (boost && boost < BOOST_MIN) {
throw new UserInputError(`boost must be at least ${BOOST_MIN}`, { argumentName: 'boost' })
}
let fwdUser
if (forward) {
fwdUser = await models.user.findUnique({ where: { name: forward } })
if (!fwdUser) {
throw new UserInputError('forward user does not exist', { argumentName: 'forward' })
}
}
const hasImgLink = !!(text && mdHas(text, ['link', 'image']))
if (id) {
const optionCount = await models.pollOption.count({
where: {
itemId: Number(id)
}
})
if (options.length + optionCount > MAX_POLL_NUM_CHOICES) {
throw new UserInputError(`total choices must be <${MAX_POLL_NUM_CHOICES}`, { argumentName: 'options' })
}
const [item] = await serialize(models,
models.$queryRaw(`${SELECT} FROM update_poll($1, $2, $3, $4, $5, $6, $7) AS "Item"`,
Number(id), title, text, Number(boost || 0), options, Number(fwdUser?.id), hasImgLink))
return item
} else {
if (options.length < 2 || options.length > MAX_POLL_NUM_CHOICES) {
throw new UserInputError(`choices must be >2 and <${MAX_POLL_NUM_CHOICES}`, { argumentName: 'options' })
}
const [item] = await serialize(models,
models.$queryRaw(`${SELECT} FROM create_poll($1, $2, $3, $4, $5, $6, $7, $8, '${ITEM_SPAM_INTERVAL}') AS "Item"`,
title, text, 1, Number(boost || 0), Number(me.id), options, Number(fwdUser?.id), hasImgLink))
await createMentions(item, models)
item.comments = []
return item
}
},
upsertJob: async (parent, {
id, sub, title, company, location, remote,
text, url, maxBid, status, logo
}, { me, models }) => {
if (!me) {
throw new AuthenticationError('you must be logged in to create job')
}
const fullSub = await models.sub.findUnique({ where: { name: sub } })
if (!fullSub) {
throw new UserInputError('not a valid sub', { argumentName: 'sub' })
}
if (fullSub.baseCost > maxBid) {
throw new UserInputError(`bid must be at least ${fullSub.baseCost}`, { argumentName: 'maxBid' })
}
if (!location && !remote) {
throw new UserInputError('must specify location or remote', { argumentName: 'location' })
}
const checkSats = async () => {
// check if the user has the funds to run for the first minute
const minuteMsats = maxBid * 1000
const user = await models.user.findUnique({ where: { id: me.id } })
if (user.msats < minuteMsats) {
throw new UserInputError('insufficient funds')
}
}
const data = {
title,
company,
location: location.toLowerCase() === 'remote' ? undefined : location,
remote,
text,
url,
maxBid,
subName: sub,
userId: me.id,
uploadId: logo
}
if (id) {
if (status) {
data.status = status
// if the job is changing to active, we need to check they have funds
if (status === 'ACTIVE') {
await checkSats()
}
}
const old = await models.item.findUnique({ where: { id: Number(id) } })
if (Number(old.userId) !== Number(me?.id)) {
throw new AuthenticationError('item does not belong to you')
}
return await models.item.update({
where: { id: Number(id) },
data
})
}
// before creating job, check the sats
await checkSats()
return await models.item.create({
data
})
},
createComment: async (parent, { text, parentId }, { me, models }) => {
return await createItem(parent, { text, parentId }, { me, models })
},
updateComment: async (parent, { id, text }, { me, models }) => {
return await updateItem(parent, { id, data: { text } }, { me, models })
},
pollVote: async (parent, { id }, { me, models }) => {
if (!me) {
throw new AuthenticationError('you must be logged in')
}
await serialize(models,
models.$queryRaw(`${SELECT} FROM poll_vote($1, $2) AS "Item"`,
Number(id), Number(me.id)))
return id
},
act: async (parent, { id, sats }, { me, models }) => {
// need to make sure we are logged in
if (!me) {
throw new AuthenticationError('you must be logged in')
}
if (sats <= 0) {
throw new UserInputError('sats must be positive', { argumentName: 'sats' })
}
// disallow self tips
const [item] = await models.$queryRaw(`
${SELECT}
FROM "Item"
WHERE id = $1 AND "userId" = $2`, Number(id), me.id)
if (item) {
throw new UserInputError('cannot tip your self')
}
const [{ item_act: vote }] = await serialize(models, models.$queryRaw`SELECT item_act(${Number(id)}, ${me.id}, 'TIP', ${Number(sats)})`)
return {
vote,
sats
}
},
dontLikeThis: async (parent, { id }, { me, models }) => {
// need to make sure we are logged in
if (!me) {
throw new AuthenticationError('you must be logged in')
}
// disallow self down votes
const [item] = await models.$queryRaw(`
${SELECT}
FROM "Item"
WHERE id = $1 AND "userId" = $2`, Number(id), me.id)
if (item) {
throw new UserInputError('cannot downvote your self')
}
await serialize(models, models.$queryRaw`SELECT item_act(${Number(id)}, ${me.id}, 'DONT_LIKE_THIS', ${DONT_LIKE_THIS_COST})`)
return true
}
},
Item: {
sub: async (item, args, { models }) => {
if (!item.subName) {
return null
}
return await models.sub.findUnique({ where: { name: item.subName } })
},
position: async (item, args, { models }) => {
if (!item.pinId) {
return null
}
const pin = await models.pin.findUnique({ where: { id: item.pinId } })
if (!pin) {
return null
}
return pin.position
},
prior: async (item, args, { models }) => {
if (!item.pinId) {
return null
}
const prior = await models.item.findFirst({
where: {
pinId: item.pinId,
createdAt: {
lt: item.createdAt
}
},
orderBy: {
createdAt: 'desc'
}
})
if (!prior) {
return null
}
return prior.id
},
poll: async (item, args, { models, me }) => {
if (!item.pollCost) {
return null
}
const options = await models.$queryRaw`
SELECT "PollOption".id, option, count("PollVote"."userId") as count,
coalesce(bool_or("PollVote"."userId" = ${me?.id}), 'f') as "meVoted"
FROM "PollOption"
LEFT JOIN "PollVote" on "PollVote"."pollOptionId" = "PollOption".id
WHERE "PollOption"."itemId" = ${item.id}
GROUP BY "PollOption".id
ORDER BY "PollOption".id ASC
`
const poll = {}
poll.options = options
poll.meVoted = options.some(o => o.meVoted)
poll.count = options.reduce((t, o) => t + o.count, 0)
return poll
},
user: async (item, args, { models }) =>
await models.user.findUnique({ where: { id: item.userId } }),
fwdUser: async (item, args, { models }) => {
if (!item.fwdUserId) {
return null
}
return await models.user.findUnique({ where: { id: item.fwdUserId } })
},
comments: async (item, args, { me, models }) => {
if (item.comments) {
return item.comments
}
return comments(me, models, item.id, 'hot')
},
upvotes: async (item, args, { models }) => {
const { sum: { sats } } = await models.itemAct.aggregate({
sum: {
sats: true
},
where: {
itemId: Number(item.id),
userId: {
not: Number(item.userId)
},
act: 'VOTE'
}
})
return sats || 0
},
boost: async (item, args, { models }) => {
const { sum: { sats } } = await models.itemAct.aggregate({
sum: {
sats: true
},
where: {
itemId: Number(item.id),
act: 'BOOST'
}
})
return sats || 0
},
meSats: async (item, args, { me, models }) => {
if (!me) return 0
const { sum: { sats } } = await models.itemAct.aggregate({
sum: {
sats: true
},
where: {
itemId: Number(item.id),
userId: me.id,
OR: [
{
act: 'TIP'
},
{
act: 'VOTE'
}
]
}
})
return sats || 0
},
meDontLike: async (item, args, { me, models }) => {
if (!me) return false
const dontLike = await models.itemAct.findFirst({
where: {
itemId: Number(item.id),
userId: me.id,
act: 'DONT_LIKE_THIS'
}
})
return !!dontLike
},
outlawed: async (item, args, { me, models }) => {
if (me && Number(item.userId) === Number(me.id)) {
return false
}
return item.weightedVotes - item.weightedDownVotes <= -ITEM_FILTER_THRESHOLD
},
mine: async (item, args, { me, models }) => {
return me?.id === item.userId
},
root: async (item, args, { models }) => {
if (!item.parentId) {
return null
}
return (await models.$queryRaw(`
${SELECT}
FROM "Item"
WHERE id = (
SELECT ltree2text(subltree(path, 0, 1))::integer
FROM "Item"
WHERE id = $1)`, Number(item.id)))[0]
},
parent: async (item, args, { models }) => {
if (!item.parentId) {
return null
}
return await models.item.findUnique({ where: { id: item.parentId } })
}
}
}
const namePattern = /\B@[\w_]+/gi
export const createMentions = async (item, models) => {
// if we miss a mention, in the rare circumstance there's some kind of
// failure, it's not a big deal so we don't do it transactionally
// ideally, we probably would
if (!item.text) {
return
}
try {
const mentions = item.text.match(namePattern)?.map(m => m.slice(1))
if (mentions?.length > 0) {
const users = await models.user.findMany({
where: {
name: { in: mentions }
}
})
users.forEach(async user => {
const data = {
itemId: item.id,
userId: user.id
}
await models.mention.upsert({
where: {
itemId_userId: data
},
update: data,
create: data
})
})
}
} catch (e) {
console.log('mention failure', e)
}
}
export const updateItem = async (parent, { id, data: { title, url, text, boost, forward, parentId } }, { me, models }) => {
// update iff this item belongs to me
const old = await models.item.findUnique({ where: { id: Number(id) } })
if (Number(old.userId) !== Number(me?.id)) {
throw new AuthenticationError('item does not belong to you')
}
// if it's not the FAQ, not their bio, and older than 10 minutes
const user = await models.user.findUnique({ where: { id: me.id } })
if (old.id !== 349 && user.bioId !== id && Date.now() > new Date(old.createdAt).getTime() + 10 * 60000) {
throw new UserInputError('item can no longer be editted')
}
if (boost && boost < BOOST_MIN) {
throw new UserInputError(`boost must be at least ${BOOST_MIN}`, { argumentName: 'boost' })
}
if (!old.parentId && title.length > MAX_TITLE_LENGTH) {
throw new UserInputError('title too long')
}
let fwdUser
if (forward) {
fwdUser = await models.user.findUnique({ where: { name: forward } })
if (!fwdUser) {
throw new UserInputError('forward user does not exist', { argumentName: 'forward' })
}
}
const hasImgLink = !!(text && mdHas(text, ['link', 'image']))
const [item] = await serialize(models,
models.$queryRaw(
`${SELECT} FROM update_item($1, $2, $3, $4, $5, $6, $7) AS "Item"`,
Number(id), title, url, text, Number(boost || 0), Number(fwdUser?.id), hasImgLink))
await createMentions(item, models)
return item
}
const createItem = async (parent, { title, url, text, boost, forward, parentId }, { me, models }) => {
if (!me) {
throw new AuthenticationError('you must be logged in')
}
if (boost && boost < BOOST_MIN) {
throw new UserInputError(`boost must be at least ${BOOST_MIN}`, { argumentName: 'boost' })
}
if (!parentId && title.length > MAX_TITLE_LENGTH) {
throw new UserInputError('title too long')
}
let fwdUser
if (forward) {
fwdUser = await models.user.findUnique({ where: { name: forward } })
if (!fwdUser) {
throw new UserInputError('forward user does not exist', { argumentName: 'forward' })
}
}
const hasImgLink = !!(text && mdHas(text, ['link', 'image']))
const [item] = await serialize(models,
models.$queryRaw(
`${SELECT} FROM create_item($1, $2, $3, $4, $5, $6, $7, $8, '${ITEM_SPAM_INTERVAL}') AS "Item"`,
title, url, text, Number(boost || 0), Number(parentId), Number(me.id),
Number(fwdUser?.id), hasImgLink))
await createMentions(item, models)
item.comments = []
return item
}
function nestComments (flat, parentId) {
const result = []
let added = 0
for (let i = 0; i < flat.length;) {
if (!flat[i].comments) flat[i].comments = []
if (Number(flat[i].parentId) === Number(parentId)) {
result.push(flat[i])
added++
i++
} else if (result.length > 0) {
const item = result[result.length - 1]
const [nested, newAdded] = nestComments(flat.slice(i), item.id)
if (newAdded === 0) {
break
}
item.comments.push(...nested)
i += newAdded
added += newAdded
} else {
break
}
}
return [result, added]
}
// we have to do our own query because ltree is unsupported
export const SELECT =
`SELECT "Item".id, "Item".created_at as "createdAt", "Item".updated_at as "updatedAt", "Item".title,
"Item".text, "Item".url, "Item"."userId", "Item"."fwdUserId", "Item"."parentId", "Item"."pinId", "Item"."maxBid",
"Item".company, "Item".location, "Item".remote,
"Item"."subName", "Item".status, "Item"."uploadId", "Item"."pollCost", "Item"."paidImgLink",
"Item".sats, "Item".ncomments, "Item"."commentSats", "Item"."lastCommentAt", "Item"."weightedVotes",
"Item"."weightedDownVotes", ltree2text("Item"."path") AS "path"`
async function newTimedOrderByWeightedSats (me, models, num) {
return `
ORDER BY (${await orderByNumerator(me, models)}/POWER(EXTRACT(EPOCH FROM ($${num} - "Item".created_at))/3600+2, 1.3) +
("Item".boost/${BOOST_MIN}::float)/POWER(EXTRACT(EPOCH FROM ($${num} - "Item".created_at))/3600+2, 2.6)) DESC NULLS LAST, "Item".id DESC`
}
async function topOrderByWeightedSats (me, models) {
return `ORDER BY ${await orderByNumerator(me, models)} DESC NULLS LAST, "Item".id DESC`
}