public override void on_deposit(long amount)
{
checkState();
var prev_contract_id = get_prev_call_frame_contract_address();
if (Type(prev_contract_id) != "nil" && tostring(prev_contract_id) != "")
{
var preid = tostring(prev_contract_id);
Error("this api can't called by contract:" + preid);
}
var remain = fast_map_get("users", this.storage.admin);
var headerblocknum = get_header_block_num();
if (headerblocknum >= this.storage.icoEndBlocknum)
{
Error("ico has ended");
}
if (amount <= 0)
{
Error("amount should greater than 0");
}
long remainamount = Type(remain) == "number" ? tointeger(remain) : 0;
if (remainamount <= 0)
{
Error("no tokens left");
}
long wantamount = amount * this.storage.rate;
if ((wantamount / this.storage.rate) != amount)
{
Error("invalid amount");
}
if (remainamount < wantamount)
{
Error("not enlough tokens");
}
var calleraddress = caller_address();
var balance = fast_map_get("users", calleraddress);
long toBalance = (Type(balance) == "number") ? tointeger(balance) : 0;
if (wantamount <= 0 || toBalance + wantamount < toBalance || toBalance < 0)
{
Error("invalid amount");
}
fast_map_set("users", this.storage.admin, remainamount - wantamount);
fast_map_set("users", caller_address(), toBalance + wantamount);
var eventarg = caller_address() + ",";
eventarg = eventarg + tostring(amount);
eventarg = eventarg + tostring(wantamount);
MyEventEmitteer.EmitReceived(eventarg);
}
//arg format json : {"toaddress":"xxxxxxxxxxxxxxxxx","amount":300}
public void transfer(string args)
{
checkState();
var prev_contract_id = get_prev_call_frame_contract_address();
if (Type(prev_contract_id) != "nil" && tostring(prev_contract_id) != "")
{
var preid = tostring(prev_contract_id);
Error("this api can't called by contract:" + preid);
}
var headerblocknum = get_header_block_num();
//if (headerblocknum < this.storage.icoEndBlocknum)
//{
// Error("ico not end yet , not allowed transfer ");
//}
var jsonModule = importModule <UvmJsonModule>("json");
var jsonargs = (UvmMap <string>)jsonModule.Loads(args);
string to_address = tostring(jsonargs.Get("toaddress"));
long amount = tointeger(jsonargs.Get("amount"));
if (!is_valid_address(to_address))
{
Error("invalid toaddress");
}
string concaller = caller_address();
var balance = fast_map_get("users", concaller);
long fromBalance = (Type(balance) == "number") ? tointeger(balance) : 0;
balance = fast_map_get("users", to_address);
long toBalance = (Type(balance) == "number") ? tointeger(balance) : 0;
if (amount <= 0 || fromBalance < amount || toBalance + amount < toBalance || toBalance < 0)
{
Error("invalid amount");
}
fromBalance = fromBalance - amount;
toBalance = toBalance + amount;
fast_map_set("users", concaller, fromBalance);
fast_map_set("users", to_address, toBalance);
var eventarg = to_address + ",";
eventarg = eventarg + tostring(amount);
MyEventEmitteer.EmitTransfer(to_address);
}