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#!/usr/bin/env python
import os
import sys
from goal import Goal
from datetime import datetime
stamp = datetime.now().strftime("%Y%m%d_%H%M%S")
print(f"{os.path.basename(sys.argv[0])} start {stamp}")
goal = Goal(sys.argv[1], autosend=True)
joe = goal.new_account()
flo = goal.new_account()
txinfo, err = goal.pay(goal.account, joe, amt=500_000)
assert not err, err
# Turn off rewards for precise balance checking
txinfo, err = goal.keyreg(joe, nonpart=True)
assert not err, err
joeb = goal.balance(joe)
txinfo, err = goal.pay(goal.account, flo, amt=500_000)
assert not err, err
teal = """
#pragma version 6
txn ApplicationID
bz end
// Use the rekeyed account to make a payment, and give it back
itxn_begin
int pay
itxn_field TypeEnum
txn Accounts 1
itxn_field Sender
txn Accounts 0
itxn_field Receiver
int 5
itxn_field Amount
txn Accounts 1
itxn_field RekeyTo
itxn_submit
end:
int 1
"""
txinfo, err = goal.app_create(joe, goal.assemble(teal))
assert not err, err
joeb = joeb-1000
app_id = txinfo['application-index']
assert app_id
app_addr = goal.app_address(app_id)
# flo rekeys her account to the app, app spends from it, then rekeys it back
txinfo, err = goal.pay(flo, joe, amt=1, rekey_to=app_addr)
assert not err, err
assert goal.balance(joe) == joeb+1, goal.balance(joe)
# can no longer spend
txinfo, err = goal.pay(flo, joe, amt=1)
assert err
assert goal.balance(joe) == joeb+1, goal.balance(joe)
txinfo, err = goal.app_call(joe, app_id, accounts=[flo])
assert not err, err
joeb = joeb-1000
assert goal.balance(joe) == joeb+6, goal.balance(joe)
# can spend again
txinfo, err = goal.pay(flo, joe, amt=1)
assert not err, err
assert goal.balance(joe) == joeb+7, goal.balance(joe)
print(f"{os.path.basename(sys.argv[0])} OK {stamp}")
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