stacker.news/prisma/migrations/20221214201527_referral_funcs/migration.sql

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2022-12-19 22:27:52 +00:00
CREATE OR REPLACE FUNCTION referral_act(referrer_id INTEGER, item_act_id INTEGER)
RETURNS INTEGER
LANGUAGE plpgsql
AS $$
DECLARE
act_msats BIGINT;
referral_act "ItemActType";
referral_msats BIGINT;
BEGIN
PERFORM ASSERT_SERIALIZED();
SELECT msats, act INTO act_msats, referral_act FROM "ItemAct" WHERE id = item_act_id;
IF referral_act IN ('FEE', 'BOOST', 'STREAM') THEN
referral_msats := CEIL(act_msats * .21);
INSERT INTO "ReferralAct" ("referrerId", "itemActId", msats, created_at, updated_at)
VALUES(referrer_id, item_act_id, referral_msats, now_utc(), now_utc());
UPDATE users
SET msats = msats + referral_msats, "stackedMsats" = "stackedMsats" + referral_msats
WHERE id = referrer_id;
END IF;
RETURN 0;
END;
$$;
-- add referral act on item_act
CREATE OR REPLACE FUNCTION item_act(item_id INTEGER, user_id INTEGER, act "ItemActType", act_sats INTEGER)
RETURNS INTEGER
LANGUAGE plpgsql
AS $$
DECLARE
user_msats BIGINT;
act_msats BIGINT;
fee_msats BIGINT;
item_act_id INTEGER;
referrer_id INTEGER;
BEGIN
PERFORM ASSERT_SERIALIZED();
act_msats := act_sats * 1000;
SELECT msats, "referrerId" INTO user_msats, referrer_id FROM users WHERE id = user_id;
IF act_msats > user_msats THEN
RAISE EXCEPTION 'SN_INSUFFICIENT_FUNDS';
END IF;
-- deduct msats from actor
UPDATE users SET msats = msats - act_msats WHERE id = user_id;
IF act = 'VOTE' THEN
RAISE EXCEPTION 'SN_UNSUPPORTED';
END IF;
IF act = 'TIP' THEN
-- call to influence weightedVotes ... we need to do this before we record the acts because
-- the priors acts are taken into account
PERFORM weighted_votes_after_tip(item_id, user_id, act_sats);
-- take 10% and insert as FEE
fee_msats := CEIL(act_msats * 0.1);
act_msats := act_msats - fee_msats;
INSERT INTO "ItemAct" (msats, "itemId", "userId", act, created_at, updated_at)
VALUES (fee_msats, item_id, user_id, 'FEE', now_utc(), now_utc())
RETURNING id INTO item_act_id;
-- add sats to actee's balance and stacked count
UPDATE users
SET msats = msats + act_msats, "stackedMsats" = "stackedMsats" + act_msats
WHERE id = (SELECT COALESCE("fwdUserId", "userId") FROM "Item" WHERE id = item_id)
RETURNING "referrerId" INTO referrer_id;
-- leave the rest as a tip
INSERT INTO "ItemAct" (msats, "itemId", "userId", act, created_at, updated_at)
VALUES (act_msats, item_id, user_id, 'TIP', now_utc(), now_utc());
-- call to denormalize sats and commentSats
PERFORM sats_after_tip(item_id, user_id, act_msats + fee_msats);
ELSE -- BOOST, POLL, DONT_LIKE_THIS, STREAM
-- call to influence if DONT_LIKE_THIS weightedDownVotes
IF act = 'DONT_LIKE_THIS' THEN
-- make sure they haven't done this before
IF EXISTS (SELECT 1 FROM "ItemAct" WHERE "itemId" = item_id AND "userId" = user_id AND "ItemAct".act = 'DONT_LIKE_THIS') THEN
RAISE EXCEPTION 'SN_DUPLICATE';
END IF;
PERFORM weighted_downvotes_after_act(item_id, user_id, act_sats);
END IF;
INSERT INTO "ItemAct" (msats, "itemId", "userId", act, created_at, updated_at)
VALUES (act_msats, item_id, user_id, act, now_utc(), now_utc())
RETURNING id INTO item_act_id;
END IF;
-- they have a referrer and the referrer isn't the one tipping them
IF referrer_id IS NOT NULL AND user_id <> referrer_id THEN
PERFORM referral_act(referrer_id, item_act_id);
END IF;
RETURN 0;
END;
$$;
CREATE OR REPLACE FUNCTION run_auction(item_id INTEGER) RETURNS void AS $$
DECLARE
bid_sats INTEGER;
user_msats BIGINT;
user_id INTEGER;
item_status "Status";
status_updated_at timestamp(3);
BEGIN
PERFORM ASSERT_SERIALIZED();
-- extract data we need
SELECT "maxBid", "userId", status, "statusUpdatedAt" INTO bid_sats, user_id, item_status, status_updated_at FROM "Item" WHERE id = item_id;
SELECT msats INTO user_msats FROM users WHERE id = user_id;
-- 0 bid items expire after 30 days unless updated
IF bid_sats = 0 THEN
IF item_status <> 'STOPPED' THEN
IF status_updated_at < now_utc() - INTERVAL '30 days' THEN
UPDATE "Item" SET status = 'STOPPED', "statusUpdatedAt" = now_utc() WHERE id = item_id;
ELSEIF item_status = 'NOSATS' THEN
UPDATE "Item" SET status = 'ACTIVE' WHERE id = item_id;
END IF;
END IF;
RETURN;
END IF;
-- check if user wallet has enough sats
IF bid_sats * 1000 > user_msats THEN
-- if not, set status = NOSATS and statusUpdatedAt to now_utc if not already set
IF item_status <> 'NOSATS' THEN
UPDATE "Item" SET status = 'NOSATS', "statusUpdatedAt" = now_utc() WHERE id = item_id;
END IF;
ELSE
PERFORM item_act(item_id, user_id, 'STREAM', bid_sats);
-- update item status = ACTIVE and statusUpdatedAt = now_utc if NOSATS
IF item_status = 'NOSATS' THEN
UPDATE "Item" SET status = 'ACTIVE', "statusUpdatedAt" = now_utc() WHERE id = item_id;
END IF;
END IF;
END;
$$ LANGUAGE plpgsql;
-- retro actively, turn all invites into referrals
UPDATE users
SET "referrerId" = subquery.inviter
FROM (
SELECT invitees.id AS invitee, inviters.id AS inviter
FROM users invitees
JOIN "Invite" ON invitees."inviteId" = "Invite".id
JOIN users inviters ON inviters.id = "Invite"."userId") subquery
WHERE id = subquery.invitee;
-- make inviters referrers too
CREATE OR REPLACE FUNCTION invite_drain(user_id INTEGER, invite_id TEXT)
RETURNS INTEGER
LANGUAGE plpgsql
AS $$
DECLARE
inviter_id INTEGER;
inviter_sats INTEGER;
gift INTEGER;
BEGIN
PERFORM ASSERT_SERIALIZED();
-- check user was created in last hour
-- check user did not already redeem an invite
PERFORM FROM users
WHERE id = user_id AND users.created_at >= NOW() AT TIME ZONE 'UTC' - INTERVAL '1 HOUR'
AND users."inviteId" IS NULL;
IF NOT FOUND THEN
RAISE EXCEPTION 'SN_INELIGIBLE';
END IF;
-- check that invite has not reached limit
-- check that invite is not revoked
SELECT "Invite"."userId", "Invite".gift INTO inviter_id, gift FROM "Invite"
LEFT JOIN users ON users."inviteId" = invite_id
WHERE "Invite".id = invite_id AND NOT "Invite".revoked
GROUP BY "Invite".id
HAVING COUNT(DISTINCT users.id) < "Invite".limit OR "Invite".limit IS NULL;
IF NOT FOUND THEN
RAISE EXCEPTION 'SN_REVOKED_OR_EXHAUSTED';
END IF;
-- check that inviter has sufficient balance
SELECT (msats / 1000) INTO inviter_sats
FROM users WHERE id = inviter_id;
IF inviter_sats < gift THEN
RAISE EXCEPTION 'SN_REVOKED_OR_EXHAUSTED';
END IF;
-- subtract amount from inviter
UPDATE users SET msats = msats - (1000 * gift) WHERE id = inviter_id;
-- add amount to invitee
UPDATE users SET msats = msats + (1000 * gift), "inviteId" = invite_id, "referrerId" = inviter_id WHERE id = user_id;
RETURN 0;
END;
$$;