88 lines
3.6 KiB
MySQL
88 lines
3.6 KiB
MySQL
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-- Update item_act to noop on negative or zero sats
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CREATE OR REPLACE FUNCTION item_act(item_id INTEGER, user_id INTEGER, act "ItemActType", act_sats INTEGER)
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RETURNS INTEGER
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LANGUAGE plpgsql
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AS $$
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DECLARE
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user_msats BIGINT;
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act_msats BIGINT;
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fee_msats BIGINT;
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item_act_id INTEGER;
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fwd_entry record; -- for loop iterator variable to iterate across forward recipients
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fwd_msats BIGINT; -- for loop variable calculating how many msats to give each forward recipient
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total_fwd_msats BIGINT := 0; -- accumulator to see how many msats have been forwarded for the act
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BEGIN
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PERFORM ASSERT_SERIALIZED();
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IF act_sats <= 0 THEN
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RETURN 0;
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END IF;
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act_msats := act_sats * 1000;
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SELECT msats INTO user_msats FROM users WHERE id = user_id;
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IF act_msats > user_msats THEN
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RAISE EXCEPTION 'SN_INSUFFICIENT_FUNDS';
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END IF;
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-- deduct msats from actor
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UPDATE users SET msats = msats - act_msats WHERE id = user_id;
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IF act = 'TIP' THEN
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-- call to influence weightedVotes ... we need to do this before we record the acts because
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-- the priors acts are taken into account
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PERFORM weighted_votes_after_tip(item_id, user_id, act_sats);
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-- call to denormalize sats and commentSats
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PERFORM sats_after_tip(item_id, user_id, act_msats);
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-- take 10% and insert as FEE
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fee_msats := CEIL(act_msats * 0.1);
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act_msats := act_msats - fee_msats;
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-- save the fee act into item_act_id so we can record referral acts
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INSERT INTO "ItemAct" (msats, "itemId", "userId", act, created_at, updated_at)
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VALUES (fee_msats, item_id, user_id, 'FEE', now_utc(), now_utc())
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RETURNING id INTO item_act_id;
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-- leave the rest as a tip
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INSERT INTO "ItemAct" (msats, "itemId", "userId", act, created_at, updated_at)
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VALUES (act_msats, item_id, user_id, 'TIP', now_utc(), now_utc());
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-- denormalize bounty paid (if applicable)
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PERFORM bounty_paid_after_act(item_id, user_id);
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-- add sats to actees' balance and stacked count
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FOR fwd_entry IN SELECT "userId", "pct" FROM "ItemForward" WHERE "itemId" = item_id
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LOOP
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-- fwd_msats represents the sats for this forward recipient from this particular tip action
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fwd_msats := act_msats * fwd_entry.pct / 100;
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-- keep track of how many msats have been forwarded, so we can give any remaining to OP
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total_fwd_msats := fwd_msats + total_fwd_msats;
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UPDATE users
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SET msats = msats + fwd_msats, "stackedMsats" = "stackedMsats" + fwd_msats
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WHERE id = fwd_entry."userId";
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END LOOP;
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-- Give OP any remaining msats after forwards have been applied
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IF act_msats - total_fwd_msats > 0 THEN
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UPDATE users
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SET msats = msats + act_msats - total_fwd_msats, "stackedMsats" = "stackedMsats" + act_msats - total_fwd_msats
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WHERE id = (SELECT "userId" FROM "Item" WHERE id = item_id);
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END IF;
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ELSE -- BOOST, POLL, DONT_LIKE_THIS, STREAM
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-- call to influence if DONT_LIKE_THIS weightedDownVotes
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IF act = 'DONT_LIKE_THIS' THEN
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PERFORM weighted_downvotes_after_act(item_id, user_id, act_sats);
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END IF;
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INSERT INTO "ItemAct" (msats, "itemId", "userId", act, created_at, updated_at)
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VALUES (act_msats, item_id, user_id, act, now_utc(), now_utc())
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RETURNING id INTO item_act_id;
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END IF;
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-- store referral effects
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PERFORM referral_act(item_act_id);
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RETURN 0;
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END;
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$$;
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