stacker.news/prisma/migrations/20231005215415_fix_freebies/migration.sql

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2023-10-05 23:40:30 +00:00
UPDATE "Item" SET freebie = true
WHERE NOT EXISTS (
SELECT 1
FROM "ItemAct"
WHERE "itemId" = "Item".id
AND "userId" = "Item"."userId"
AND act = 'FEE');
-- add freebie tag back to applicatable items
CREATE OR REPLACE FUNCTION create_item(
jitem JSONB, forward JSONB, poll_options JSONB, spam_within INTERVAL)
RETURNS "Item"
LANGUAGE plpgsql
AS $$
DECLARE
user_msats BIGINT;
cost_msats BIGINT;
freebie BOOLEAN;
item "Item";
med_votes FLOAT;
select_clause TEXT;
BEGIN
PERFORM ASSERT_SERIALIZED();
-- access fields with appropriate types
item := jsonb_populate_record(NULL::"Item", jitem);
SELECT msats INTO user_msats FROM users WHERE id = item."userId";
IF item."maxBid" IS NOT NULL THEN
cost_msats := 1000000;
ELSE
cost_msats := 1000 * POWER(10, item_spam(item."parentId", item."userId", spam_within));
END IF;
-- it's only a freebie if it's a 1 sat cost, they have < 1 sat, and boost = 0
freebie := (cost_msats <= 1000) AND (user_msats < 1000) AND (item.boost IS NULL OR item.boost = 0);
IF NOT freebie AND cost_msats > user_msats THEN
RAISE EXCEPTION 'SN_INSUFFICIENT_FUNDS';
END IF;
-- get this user's median item score
SELECT COALESCE(
percentile_cont(0.5) WITHIN GROUP(
ORDER BY "weightedVotes" - "weightedDownVotes"), 0)
INTO med_votes FROM "Item" WHERE "userId" = item."userId";
-- if their median votes are positive, start at 0
-- if the median votes are negative, start their post with that many down votes
-- basically: if their median post is bad, presume this post is too
-- addendum: if they're an anon poster, always start at 0
IF med_votes >= 0 OR item."userId" = 27 THEN
med_votes := 0;
ELSE
med_votes := ABS(med_votes);
END IF;
-- there's no great way to set default column values when using json_populate_record
-- so we need to only select fields with non-null values that way when func input
-- does not include a value, the default value is used instead of null
SELECT string_agg(quote_ident(key), ',') INTO select_clause
FROM jsonb_object_keys(jsonb_strip_nulls(jitem)) k(key);
-- insert the item
EXECUTE format($fmt$
INSERT INTO "Item" (%s, "weightedDownVotes", freebie)
SELECT %1$s, %L, %L
FROM jsonb_populate_record(NULL::"Item", %L) RETURNING *
$fmt$, select_clause, med_votes, freebie, jitem) INTO item;
INSERT INTO "ItemForward" ("itemId", "userId", "pct")
SELECT item.id, "userId", "pct" FROM jsonb_populate_recordset(NULL::"ItemForward", forward);
-- Automatically subscribe forward recipients to the new post
INSERT INTO "ThreadSubscription" ("itemId", "userId")
SELECT item.id, "userId" FROM jsonb_populate_recordset(NULL::"ItemForward", forward);
INSERT INTO "PollOption" ("itemId", "option")
SELECT item.id, "option" FROM jsonb_array_elements_text(poll_options) o("option");
IF NOT freebie THEN
UPDATE users SET msats = msats - cost_msats WHERE id = item."userId";
INSERT INTO "ItemAct" (msats, "itemId", "userId", act)
VALUES (cost_msats, item.id, item."userId", 'FEE');
END IF;
-- if this item has boost
IF item.boost > 0 THEN
PERFORM item_act(item.id, item."userId", 'BOOST', item.boost);
END IF;
-- if this is a job
IF item."maxBid" IS NOT NULL THEN
PERFORM run_auction(item.id);
END IF;
-- if this is a bio
IF item.bio THEN
UPDATE users SET "bioId" = item.id WHERE id = item."userId";
END IF;
-- schedule imgproxy job
INSERT INTO pgboss.job (name, data, retrylimit, retrybackoff, startafter)
VALUES ('imgproxy', jsonb_build_object('id', item.id), 21, true, now() + interval '5 seconds');
RETURN item;
END;
$$;