Definition: [
"autonomous agent",
{
"doc_url": "https://raw.githubusercontent.com/jldevelops/simple-odex/master/description.json",
"init": "{
if(array_length(unit[trigger.unit].authors) != 1)
bounce('multi signature not allowed');
$total_bal = balance[base]-storage_size-trigger.output[[asset=base]]-var['user_bytes'];
if(trigger.output[[asset!=base]].asset != 'none'){
$asset = trigger.output[[asset!=base]].asset;
if($asset and $asset == 'ambiguous')
bounce('Only 1 asset per tx');
}
else
$asset = 'base';
$fee = var['low_fee_mode']?200:2000;
}",
"messages": {
"cases": [
{
"if": "{!var['low_fee_mode'] AND $total_bal > 10000000}",
"messages": [
{
"app": "payment",
"payload": {
"asset": "base",
"outputs": [
{
"address": "{trigger.address}",
"amount": "{10000}"
}
]
}
},
{
"app": "state",
"state": "{
var['low_fee_mode'] = true;
response['message'] = 'Low fee mode active. Until AA depletion all operations are subsidized';
}"
}
]
},
{
"if": "{
trigger.data.trade
}",
"init": "{
$id = trigger.data.id;
if(!$id)
bounce('id param not found');
if(!var[$id])
bounce('order not found');
$order1 = json_stringify(var[$id]);
if ($order1.expiry_ts AND $order1.expiry_ts <= timestamp)
bounce("order expired");
if($order1.buy_asset != $asset)
bounce('incorrect asset, please send '||$order1.buy_asset);
$amount_left1 = var['left_' || $id];
$amount_left2 = trigger.output[[asset=$asset]]-($asset == 'base'?$fee:0);
// check if prices match
$maker_price = $order1.price;
$buy_amount1 = round($amount_left1 * $order1.price);
if ($buy_amount1 >= $amount_left2){ // sent order is the smaller one
$buy_amount2 = round($amount_left2 / $maker_price);
$amount_sold2 = $amount_left2;
$amount_sold1 = $buy_amount2;
}
else{ // order1 is the smaller one
bounce('please send less amount, max to exchange '||$buy_amount1);
}
}",
"messages": [
{
"app": "payment",
"payload": {
"asset": "{$order1.sell_asset}",
"outputs": [
{
"address": "{trigger.address}",
"amount": "{$buy_amount2}"
}
]
}
},
{
"app": "payment",
"payload": {
"asset": "{$asset}",
"outputs": [
{
"address": "{$order1.address}",
"amount": "{$amount_sold1}"
}
]
}
},
{
"if": "{$asset != 'base'}",
"app": "payment",
"payload": {
"asset": "base",
"outputs": [
{
"address": "{trigger.address}",
"amount": "{trigger.output[[asset=base]]-$fee}"
}
]
}
},
{
"if": "{var['left_'||$id||'_base']}",
"app": "payment",
"payload": {
"asset": "base",
"outputs": [
{
"address": "{$order1.address}",
"amount": "{var['left_'||$id||'_base']}"
}
]
}
},
{
"app": "state",
"state": "{
var['left_' || $id] -= $amount_sold1;
if($order1.sell_asset == 'base'){
var['user_bytes'] -= $amount_sold1;
}
if(var['left_' || $id] == 0){
var[$id] = false;
var['left_' ||$id] = false;
var['left_'||$id||'_base'] = false;
}
if(var['left_'||$id||'_base']){
var['user_bytes'] -= var['left_'||$id||'_base'];
var['left_'||$id||'_base'] = false;
}
if(var['low_fee_mode'] AND $total_bal < 50000)
var['low_fee_mode'] = false;
response['amount_' || $order1.sell_asset] = $amount_sold1;
response['amount_' || $order1.buy_asset] = $amount_sold2;
response['event'] = 'trade';
}"
}
]
},
{
"if": "{trigger.data.create}",
"init": "{
if (!trigger.data.price or trigger.data.price <= 0)
bounce("no price param or incorrect one");
if (!trigger.data.sell_asset or !trigger.data.buy_asset)
bounce('buy_asset or sell_asset missing');
if((trigger.data.sell_asset != 'base' and !asset[trigger.data.sell_asset].exists) or (trigger.data.buy_asset != 'base' and !asset[trigger.data.buy_asset].exists))
bounce('invalid sell_asset or buy asset');
if (trigger.data.sell_asset == trigger.data.buy_asset)
bounce('same asset');
if (trigger.data.expiry_ts AND trigger.data.expiry_ts <= timestamp)
bounce("wrong expiry_ts");
$null = trigger.data.lock;
if (trigger.data.sell_asset != $asset)
bounce('sell asset not same as asset sent');
if (!trigger.data.address OR !is_valid_address(trigger.data.address))
bounce('address field must be a valid address');
$id = trigger.unit;
}",
"messages": [
{
"app": "state",
"state": "{
var[$id] = json_parse(trigger.data);
var['left_' ||$id] = trigger.output[[asset=$base]];
if($asset == 'base'){
var['left_' ||$id] -= $fee;
var['user_bytes'] += var['left_' ||$id];
}
else{
var['left_'||$id||'_base'] = trigger.output[[asset=base]]-$fee;
var['user_bytes'] += var['left_' ||$id||'_base'];
}
if(var['low_fee_mode'] AND $total_bal < 50000)
var['low_fee_mode'] = false;
response['order_id'] = $id;
response['event'] = 'create';
}"
}
]
},
{
"if": "{trigger.data.cancel}",
"init": "{
if($asset != 'base')
bounce('asset not needed to cancel');
$id = trigger.data.id;
if(!$id)
bounce('id param not found');
if(!var[$id])
bounce('order not found');
$ord = json_stringify(var[$id]);
if($ord.address != trigger.address)
bounce('Not your order');
if($ord.lock){
if (!$ord.expiry_ts OR $order1.expiry_ts > timestamp){
if($ord.lock < timestamp)
bounce('locked order, must be traded, it could be cancelled on: '||($order1.expiry_ts?timestamp_to_string($order1.expiry_ts):'never on this universe'));
}
}
$base = var['left_'||$id||'_base'];
if($ord.sell_asset == 'base')
$am = var['left_' ||$id]+trigger.output[[asset=base]]-$fee;
else
$am = var['left_' ||$id];
}",
"messages": [
{
"app": "payment",
"payload": {
"asset": "{$ord.sell_asset}",
"outputs": [
{
"address": "{trigger.address}",
"amount": "{$am}"
}
]
}
},
{
"if": "{$base}",
"app": "payment",
"payload": {
"asset": "base",
"outputs": [
{
"address": "{trigger.address}",
"amount": "{$base-$fee}"
}
]
}
},
{
"app": "state",
"state": "{
var[$id] = false;
if($base)
var['user_bytes'] -= $base;
else{
if($ord.sell_asset == 'base')
var['user_bytes'] -= var['left_' ||$id];
}
var['left_' ||$id] = false;
var['left_'||$id||'_base'] = false;
if(var['low_fee_mode'] AND $total_bal < 50000)
var['low_fee_mode'] = false;
response['event'] = 'cancel';
}"
}
]
}
]
}
}
]