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decay boost a lot more

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This commit is contained in:
keyan 2021-07-09 14:12:35 -05:00
parent 7abb6d8f5d
commit 676a912974
1 changed files with 9 additions and 5 deletions
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14
api/resolvers/item.js
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@ -22,7 +22,7 @@ async function comments (models, id) {
function decodeCursor (cursor) {
if (!cursor) {
return { offset: 0, time: new Date() }
return { offset: 0, time: new Date((new Date()).getTime() + (2 * 60 * 60 * 1000)) }
} else {
const res = JSON.parse(Buffer.from(cursor, 'base64'))
res.time = new Date(res.time)
@ -293,22 +293,26 @@ const SELECT =
`SELECT "Item".id, "Item".created_at as "createdAt", "Item".updated_at as "updatedAt", "Item".title,
"Item".text, "Item".url, "Item"."userId", "Item"."parentId", ltree2text("Item"."path") AS "path"`
const LEFT_JOIN_SATS_SELECT = 'SELECT i.id, SUM(CASE WHEN "Vote".boost THEN 0 ELSE "Vote".sats END) as sats, SUM(CASE WHEN "Vote".boost THEN "Vote".sats ELSE 0 END) as boost'
function timedLeftJoinSats (num) {
return `LEFT JOIN (SELECT i.id, SUM("Vote".sats) as sats
return `LEFT JOIN (${LEFT_JOIN_SATS_SELECT}
FROM "Item" i
JOIN "Vote" ON i.id = "Vote"."itemId" AND "Vote".created_at <= $${num}
GROUP BY i.id) x ON "Item".id = x.id`
}
const LEFT_JOIN_SATS =
`LEFT JOIN (SELECT i.id, SUM("Vote".sats) as sats
`LEFT JOIN (${LEFT_JOIN_SATS_SELECT}
FROM "Item" i
JOIN "Vote" ON i.id = "Vote"."itemId"
GROUP BY i.id) x ON "Item".id = x.id`
function timedOrderBySats (num) {
return `ORDER BY (x.sats-1)/POWER(EXTRACT(EPOCH FROM ($${num} - "Item".created_at))/3600+2, 1.5) DESC NULLS LAST`
return `ORDER BY ((x.sats-1)/POWER(EXTRACT(EPOCH FROM ($${num} - "Item".created_at))/3600+2, 1.5) +
(x.boost)/POWER(EXTRACT(EPOCH FROM ($${num} - "Item".created_at))/3600+2, 9)) DESC NULLS LAST`
}
const ORDER_BY_SATS =
'ORDER BY (x.sats-1)/POWER(EXTRACT(EPOCH FROM ((NOW() AT TIME ZONE \'UTC\') - "Item".created_at))/3600+2, 1.5) DESC NULLS LAST'
`ORDER BY ((x.sats-1)/POWER(EXTRACT(EPOCH FROM ((NOW() AT TIME ZONE 'UTC') - "Item".created_at))/3600+2, 1.5) +
(x.boost)/POWER(EXTRACT(EPOCH FROM ((NOW() AT TIME ZONE 'UTC') - "Item".created_at))/3600+2, 9)) DESC NULLS LAST`