[ "autonomous agent", { "messages": { "cases": [ { "if": "{ $key = 'balance_'||trigger.address||'_'||trigger.data.asset; trigger.data.withdraw AND trigger.data.asset AND trigger.data.amount AND trigger.data.amount <= var[$key] }", "messages": [ { "app": "payment", "payload": { "asset": "{trigger.data.asset}", "outputs": [ { "address": "{trigger.address}", "amount": "{trigger.data.amount}" } ] } }, { "app": "state", "state": "{ var[$key] = var[$key] - trigger.data.amount; }" } ] }, { "if": "{ $order1 = trigger.data.order1.signed_message; $order2 = trigger.data.order2.signed_message; if (!$order1.sell_asset OR !$order2.sell_asset) return false; if ($order1.sell_asset != $order2.buy_asset OR $order1.buy_asset != $order2.sell_asset) bounce('assets do not match'); if ($order1.matcher != trigger.address) bounce('wrong matcher in order1'); if ($order2.matcher != trigger.address) bounce('wrong matcher in order2'); if ($order1.expiry_ts AND $order1.expiry_ts <= timestamp) bounce("order1 expired"); if ($order2.expiry_ts AND $order2.expiry_ts <= timestamp) bounce("order2 expired"); $sell_key1 = 'balance_' || $order1.address || '_' || $order1.sell_asset; $sell_key2 = 'balance_' || $order2.address || '_' || $order2.sell_asset; $id1 = sha256($order1.address || $order1.sell_asset || $order1.buy_asset || $order1.sell_amount || $order1.price || trigger.data.order1.last_ball_unit); $id2 = sha256($order2.address || $order2.sell_asset || $order2.buy_asset || $order2.sell_amount || $order2.price || trigger.data.order2.last_ball_unit); if (var['executed_' || $id1]) bounce('order1 already executed'); if (var['executed_' || $id2]) bounce('order2 already executed'); $amount_left1 = var['amount_left_' || $id1] otherwise $order1.sell_amount; $amount_left2 = var['amount_left_' || $id2] otherwise $order2.sell_amount; // check balances if ($amount_left1 > var[$sell_key1]) bounce('not sufficient balance in sell asset to complete order1'); if ($amount_left2 > var[$sell_key2]) bounce('not sufficient balance in sell asset to complete order2'); // check if prices match $buy_amount1 = round($amount_left1 * $order1.price); if ($buy_amount1 > $amount_left2){ // order2 is the smaller one $order_smaller = $order2; $order_larger = $order1; $id_smaller = $id2; $id_larger = $id1; $amount_left_smaller = $amount_left2; $amount_left_larger = $amount_left1; $buy_amount2 = round($amount_left2 * $order2.price); $buy_amount_smaller = $buy_amount2; } else{ // order1 is the smaller one $order_smaller = $order1; $order_larger = $order2; $id_smaller = $id1; $id_larger = $id2; $amount_left_smaller = $amount_left1; $amount_left_larger = $amount_left2; $buy_amount_smaller = $buy_amount1; } $expected_buy_amount_larger = round($buy_amount_smaller * $order_larger.price); if ($expected_buy_amount_larger > $amount_left_smaller) bounce("price mismatch: larger user doesn't like the price, he gets less than expects"); // matcher fees $max_matcher_fee1 = round($order1.matcher_fee * $amount_left1/$order1.sell_amount); $max_matcher_fee2 = round($order2.matcher_fee * $buy_amount1/$order2.sell_amount); // the formula will fail if matcher_fee1/matcher_fee2 is not passed in or is not a number if (trigger.data.matcher_fee1 > $max_matcher_fee1) bounce('matcher_fee1 is too large'); if (trigger.data.matcher_fee2 > $max_matcher_fee2) bounce('matcher_fee2 is too large'); // affiliates if ($order1.affiliate){ if (!$order1.affiliate_fee_asset) bounce('no affiliate_fee_asset in order1'); if ($order1.affiliate_fee < 0) // will error if none or not a number bounce('affiliate_fee < 0 in order1'); $affiliate_fee1 = trigger.data.affiliate_fee1 otherwise 0; $max_affiliate_fee1 = round($order1.affiliate_fee * $amount_left1/$order1.sell_amount); if ($affiliate_fee1 > $max_affiliate_fee1) bounce('affiliate_fee1 is too large'); } if ($order2.affiliate){ if (!$order2.affiliate_fee_asset) bounce('no affiliate_fee_asset in order2'); if ($order2.affiliate_fee < 0) // will error if none or not a number bounce('affiliate_fee < 0 in order2'); $affiliate_fee2 = trigger.data.affiliate_fee2 otherwise 0; $max_affiliate_fee2 = round($order2.affiliate_fee * $buy_amount1/$order2.sell_amount); if ($affiliate_fee2 > $max_affiliate_fee2) bounce('affiliate_fee2 is too large'); } if (!is_valid_signed_package(trigger.data.order1, $order1.address)) bounce('bad signature of order1'); if (!is_valid_signed_package(trigger.data.order2, $order2.address)) bounce('bad signature of order2'); true }", "messages": [ { "app": "state", "state": "{ $buy_key1 = 'balance_' || $order1.address || '_' || $order1.buy_asset; $buy_key2 = 'balance_' || $order2.address || '_' || $order2.buy_asset; var[$sell_key1] -= $amount_left1; var[$sell_key2] -= $buy_amount1; var[$buy_key1] += $buy_amount1; var[$buy_key2] += $amount_left1; // matcher fees $matcher_fee_user_key1 = 'balance_' || $order1.address || '_' || $order1.matcher_fee_asset; $matcher_fee_user_key2 = 'balance_' || $order2.address || '_' || $order2.matcher_fee_asset; $matcher_fee_matcher_key1 = 'balance_' || $order1.matcher || '_' || $order1.matcher_fee_asset; $matcher_fee_matcher_key2 = 'balance_' || $order2.matcher || '_' || $order2.matcher_fee_asset; var[$matcher_fee_matcher_key1] += trigger.data.matcher_fee1; var[$matcher_fee_matcher_key2] += trigger.data.matcher_fee2; var[$matcher_fee_user_key1] -= trigger.data.matcher_fee1; var[$matcher_fee_user_key2] -= trigger.data.matcher_fee2; if (var[$matcher_fee_user_key1] < 0) bounce("not enough user1 balance for matcher fees"); if (var[$matcher_fee_user_key2] < 0) bounce("not enough user2 balance for matcher fees"); // fees can be negative if (var[$matcher_fee_matcher_key1] < 0) bounce("not enough matcher order1.matcher_fee_asset balance for matcher fees"); if (var[$matcher_fee_matcher_key2] < 0) bounce("not enough matcher order2.matcher_fee_asset balance for matcher fees"); // affiliate fees if ($order1.affiliate AND $affiliate_fee1){ $affiliate_fee_user_key1 = 'balance_' || $order1.address || '_' || $order1.affiliate_fee_asset; $affiliate_fee_affiliate_key1 = 'balance_' || $order1.affiliate || '_' || $order1.affiliate_fee_asset; var[$affiliate_fee_user_key1] -= $affiliate_fee1; var[$affiliate_fee_affiliate_key1] += $affiliate_fee1; if (var[$affiliate_fee_user_key1] < 0) bounce("not enough user1 balance for affiliate fees"); } if ($order2.affiliate AND $affiliate_fee2){ $affiliate_fee_user_key2 = 'balance_' || $order2.address || '_' || $order2.affiliate_fee_asset; $affiliate_fee_affiliate_key2 = 'balance_' || $order2.affiliate || '_' || $order2.affiliate_fee_asset; var[$affiliate_fee_user_key2] -= $affiliate_fee2; var[$affiliate_fee_affiliate_key2] += $affiliate_fee2; if (var[$affiliate_fee_user_key2] < 0) bounce("not enough user2 balance for affiliate fees"); } // AA fees $aa_fee = 1000; $base_key1 = 'balance_' || $order1.address || '_base'; $base_key2 = 'balance_' || $order2.address || '_base'; var[$base_key1] -= $aa_fee; var[$base_key2] -= $aa_fee; if (var[$base_key1] < 0 OR var[$base_key2] < 0) bounce('not enough balance for AA fees'); var['executed_' || $id_smaller] = 1; $new_amount_left_larger = $amount_left_larger - $buy_amount_smaller; if ($new_amount_left_larger) var['amount_left_' || $id_larger] = $new_amount_left_larger; else var['executed_' || $id_larger] = 1; // parsable response for transaction log response[$order1.address || '_' || $order1.sell_asset] = -$amount_left1; response[$order2.address || '_' || $order2.buy_asset] = $amount_left1; response[$order1.address || '_' || $order1.buy_asset] = $buy_amount1; response[$order2.address || '_' || $order2.sell_asset] = -$buy_amount1; }" } ] }, { "if": "{!trigger.data}", "messages": [ { "app": "state", "state": "{ $asset = trigger.output[[asset!=base]].asset; if ($asset == 'ambiguous') bounce('ambiguous asset'); if (trigger.output[[asset=base]] > 10000){ $base_key = 'balance_'||trigger.address||'_'||'base'; var[$base_key] = var[$base_key] + trigger.output[[asset=base]]; $response_base = trigger.output[[asset=base]] || ' bytes\ '; } if ($asset != 'none'){ $asset_key = 'balance_'||trigger.address||'_'||$asset; var[$asset_key] = var[$asset_key] + trigger.output[[asset=$asset]]; $response_asset = trigger.output[[asset=$asset]] || ' of ' || $asset || '\ '; } response['message'] = 'accepted coins:\ ' || ($response_base otherwise '') || ($response_asset otherwise ''); }" } ] } ] } } ]