Contract con_uw_set_nick


Contract Code


  
1 import currency
2 import con_uwarriors_lst001
3
4
5 metadata = Hash(default_value=0)
6 nicks = Hash(default_value=0)
7 wp = ForeignHash(foreign_contract='con_uwarriors_lst001', foreign_name='balances')
8
9 @construct
10 def seed():
11 metadata['operator'] = ctx.caller
12 metadata['cost'] = 70
13 metadata['recost'] = 40
14
15
16 @export
17 def set_nick_name(nickname: str):
18 caller = ctx.caller
19 amount = metadata['cost']
20
21 if nicks[caller, 'pay'] == True:
22 amount = metadata['recost']
23
24 assert wp[caller] >= amount , 'Not enough coins to send!'
25 assert len(nickname) <= 25, 'Nickname too long (25 chars max).'
26 assert len(nickname) > 0, 'Nickname too short.'
27
28 names_uid = hashlib.sha256(nickname.lower().replace(' ', ''))
29
30 if nicks[caller, 'hash']:
31 nicks['nicknames', nicks[caller, 'hash']] = False
32
33 assert not nicks['nicknames', names_uid], 'A form of this name already belongs to ' + nicks['nicknames', names_uid]
34 con_uwarriors_lst001.transfer_from(amount, metadata['operator'], caller)
35 nicks[caller, 'nickname'] = nickname
36 nicks[caller, 'hash'] = names_uid
37 nicks['nicknames', names_uid] = nickname
38 nicks[caller, 'pay'] = True
39
40
41 @export
42 def change_nick_name(nickname: str, change: str):
43 assert ctx.caller == metadata['operator'], 'Only operator can set metadata!'
44 assert len(nickname) <= 25, 'Nickname too long (25 chars max).'
45 assert len(nickname) > 0, 'Nickname too short.'
46 names_uid = hashlib.sha256(nickname.lower().replace(' ', ''))
47 assert not nicks['nicknames', names_uid], 'A form of this name already belongs to ' + nicks['nicknames', names_uid]
48 nicks[nickname, 'nickname'] = change
49 nicks['nicknames', names_uid] = change
50
51

Byte Code

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