Contract con_pixel_whale_master_v1


Contract Code


  
1 import currency
2 I = importlib
3 __S = Hash(default_value='', contract='con_pixel_whale_master_v1', name='S')
4 __balances = Hash(default_value=0, contract='con_pixel_whale_master_v1',
5 name='balances')
6 __metadata = Hash(default_value=0, contract='con_pixel_whale_master_v1',
7 name='metadata')
8
9
10 def ____():
11 __S['thing_info_contract'] = 'con_pixel_whale_info_v1'
12 __metadata['operator'] = ctx.caller
13 __metadata['things_name'] = 'Pixel Whales v1'
14 __metadata['things_description'
15 ] = 'On-chain Pixel Animations you can BUY and SELL!'
16
17
18 @__export('con_pixel_whale_master_v1')
19 def change_metadata(key: str, value: Any):
20 assert ctx.caller == __metadata['operator'
21 ], 'Only operator can set metadata!'
22 __metadata[key] = value
23
24
25 @__export('con_pixel_whale_master_v1')
26 def create_thing(thing_string: str, name: str, description: str, meta: dict={}
27 ):
28 thing_info = I.import_module(__S['thing_info_contract'])
29 sender = ctx.caller
30 thing_uid = thing_info.add_thing(thing_string, name, description, meta,
31 sender)
32 __add_to_balance(sender)
33 return thing_uid
34
35
36 @__export('con_pixel_whale_master_v1')
37 def buy_thing(uid: str):
38 thing_info = I.import_module(__S['thing_info_contract'])
39 sender = ctx.caller
40 owner = thing_info.get_owner(uid)
41 creator = thing_info.get_creator(uid)
42 __assert_already_owned(uid, sender)
43 price_amount = thing_info.get_price_amount(uid)
44 royalty_percent = thing_info.get_royalty_amount(uid)
45 assert price_amount, uid + ' is not for sale'
46 assert price_amount > 0, uid + ' is not for sale'
47 price_hold = thing_info.get_price_hold(uid)
48 if price_hold != '':
49 assert sender == price_hold, uid + ' is being held for ' + price_hold
50 if royalty_percent > 0:
51 royalty_amount = price_amount * (royalty_percent / 100)
52 net_amount = price_amount - royalty_amount
53 currency.transfer_from(royalty_amount, creator, sender)
54 else:
55 net_amount = price_amount
56 currency.transfer_from(net_amount, owner, sender)
57 __transfer_ownership(uid, sender)
58
59
60 @__export('con_pixel_whale_master_v1')
61 def sell_thing(uid: str, amount: float):
62 __assert_ownership(uid, ctx.caller)
63 thing_info = I.import_module(__S['thing_info_contract'])
64 thing_info.set_price(uid, amount, '')
65
66
67 @__export('con_pixel_whale_master_v1')
68 def sell_thing_to(uid: str, amount: float, hold: str):
69 __assert_ownership(uid, ctx.caller)
70 thing_info = I.import_module(__S['thing_info_contract'])
71 thing_info.set_price(uid, amount, hold)
72
73
74 @__export('con_pixel_whale_master_v1')
75 def transfer(uid: str, new_owner: str):
76 sender = ctx.caller
77 __assert_ownership(uid, sender)
78 __assert_already_owned(uid, new_owner)
79 __transfer_ownership(uid, new_owner)
80
81
82 @__export('con_pixel_whale_master_v1')
83 def approve(uid: str, to: str):
84 sender = ctx.caller
85 __assert_ownership(uid, sender)
86 __balances[sender, uid, to] = True
87
88
89 @__export('con_pixel_whale_master_v1')
90 def revoke(uid: str, to: str):
91 __balances[ctx.caller, uid, to] = None
92
93
94 @__export('con_pixel_whale_master_v1')
95 def transfer_from(uid: str, to: str, main_account: str):
96 sender = ctx.caller
97 assert __balances[main_account, uid, sender
98 ], "You have not been given approval to transfer this user's item."
99 __assert_ownership(uid, main_account)
100 __assert_already_owned(uid, to)
101 __transfer_ownership(uid, to)
102 __balances[main_account, uid, sender] = None
103
104
105 @__export('con_pixel_whale_master_v1')
106 def like_thing(uid: str):
107 sender = ctx.caller
108 assert __S['liked', uid, sender] == '', sender + ' already liked ' + uid
109 thing_info = I.import_module(__S['thing_info_contract'])
110 thing_info.like_thing(uid)
111 __S['liked', uid, sender] = True
112
113
114 @__export('con_pixel_whale_master_v1')
115 def prove_ownership(uid: str, code: str):
116 sender = ctx.caller
117 __assert_ownership(uid, sender)
118 thing_info = I.import_module(__S['thing_info_contract'])
119 thing_info.set_proof(uid, code)
120
121
122 def __assert_ownership(uid: str, sender):
123 thing_info = I.import_module(__S['thing_info_contract'])
124 owner = thing_info.get_owner(uid)
125 assert owner == sender, uid + ' not owned by ' + sender
126
127
128 def __assert_already_owned(uid: str, sender):
129 thing_info = I.import_module(__S['thing_info_contract'])
130 owner = thing_info.get_owner(uid)
131 assert owner != sender, uid + ' already owned by ' + sender
132
133
134 def __transfer_ownership(uid: str, new_owner: str):
135 thing_info = I.import_module(__S['thing_info_contract'])
136 old_owner = thing_info.get_owner(uid)
137 thing_info.set_owner(uid, new_owner)
138 if thing_info.get_price_amount(uid) > 0:
139 thing_info.set_price(uid, 0, '')
140 __add_to_balance(new_owner)
141 __subtract_from_balance(old_owner)
142
143
144 def __add_to_balance(holder: str):
145 if __balances[holder] is None:
146 __balances[holder] = 1
147 else:
148 __balances[holder] = __balances[holder] + 1
149
150
151 def __subtract_from_balance(holder: str):
152 if __balances[holder] is None:
153 __balances[holder] = 0
154 else:
155 __balances[holder] = __balances[holder] - 1
156

Byte Code

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