def onNEP17Payment(t_from: UInt160, t_amount: int, data: List[Any]):
"""
Triggered by a payment to the contract, which creates a new stream
Args:
t_from (UInt160): Sender of GAS
t_amount (int): Amount of GAS sent
data (List[Any]): Parameters for operations
"""
if calling_script_hash == GAS:
assert len(t_from) == 20, 'invalid address'
assert t_amount > 0, 'no funds transferred'
p_len = len(data)
assert p_len > 1, 'incorrect data length'
p_operation = cast(str, data[0])
if p_operation == 'createStream':
assert p_len == 4, 'incorrect arguments to createStream'
recipient = cast(bytes, data[1])
start_time = cast(int, data[2])
stop_time = cast(int, data[3])
current_time = get_time
assert len(recipient) == 20, 'invalid recipient scripthash'
# assert start_time >= current_time, 'start time cannot be in the past'
assert stop_time > start_time, 'stop time must be greater than start time'
stream = newStream()
stream['start'] = start_time
stream['stop'] = stop_time
stream['deposit'] = t_amount
stream['remaining'] = t_amount
stream['sender'] = base64_encode(t_from)
stream['recipient'] = base64_encode(recipient)
saveStream(stream)
return
abort()
def getSenderStreams(sender: UInt160) -> str:
"""
Get all streams where address is sender
Args:
sender (UInt160): address as UInt160
Returns:
str: JSON array of stream IDs
"""
sender64 = base64_encode(sender)
streams = find('bysender/' + sender64)
ret = ''
while streams.next():
ret = ret + itoa(cast(bytes, streams.value[1]).to_int()) + ','
if len(ret) > 0:
ret = '[' + ret[:-1]
return ret + ']'
return '[]'
def getRecipientStreams(recipient: UInt160) -> str:
"""
Get all streams where address is recipient
Args:
recipient (UInt160): address as UInt160
Returns:
str: JSON array of stream IDs
"""
recipient64 = base64_encode(recipient)
streams = find('byrecipient/' + recipient64)
ret = ''
while streams.next():
ret = ret + itoa(cast(bytes, streams.value[1]).to_int()) + ','
if len(ret) > 0:
ret = '[' + ret[:-1]
return ret + ']'
return '[]'
def Main(key: bytes) -> str:
return base64_encode(key)
def Main(key: int) -> bytes:
return base64_encode(key)