136 lines
5.6 KiB
Python
136 lines
5.6 KiB
Python
# # ⚠ Warning
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
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# LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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# NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#
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# [🥭 Mango Markets](https://mango.markets/) support is available at:
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# [Docs](https://docs.mango.markets/)
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# [Discord](https://discord.gg/67jySBhxrg)
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# [Twitter](https://twitter.com/mangomarkets)
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# [Github](https://github.com/blockworks-foundation)
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# [Email](mailto:hello@blockworks.foundation)
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import logging
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import typing
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from decimal import Decimal
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from solana.publickey import PublicKey
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from solana.rpc.types import TokenAccountOpts
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from .context import Context
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from .token import Token
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# # 🥭 TokenValue class
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#
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# The `TokenValue` class is a simple way of keeping a token and value together, and
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# displaying them nicely consistently.
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#
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class TokenValue:
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def __init__(self, token: Token, value: Decimal):
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self.logger: logging.Logger = logging.getLogger(self.__class__.__name__)
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self.token = token
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self.value = value
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def shift_to_native(self) -> "TokenValue":
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new_value = self.token.shift_to_native(self.value)
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return TokenValue(self.token, new_value)
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@staticmethod
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def fetch_total_value_or_none(context: Context, account_public_key: PublicKey, token: Token) -> typing.Optional["TokenValue"]:
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opts = TokenAccountOpts(mint=token.mint)
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token_accounts = context.client.get_token_accounts_by_owner(account_public_key, opts)
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if len(token_accounts) == 0:
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return None
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total_value = Decimal(0)
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for token_account in token_accounts:
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result = context.client.get_token_account_balance(token_account["pubkey"])
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value = Decimal(result["amount"])
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decimal_places = result["decimals"]
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divisor = Decimal(10 ** decimal_places)
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total_value += value / divisor
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return TokenValue(token, total_value)
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@staticmethod
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def fetch_total_value(context: Context, account_public_key: PublicKey, token: Token) -> "TokenValue":
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value = TokenValue.fetch_total_value_or_none(context, account_public_key, token)
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if value is None:
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return TokenValue(token, Decimal(0))
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return value
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@staticmethod
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def report(values: typing.Sequence["TokenValue"], reporter: typing.Callable[[str], None] = print) -> None:
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for value in values:
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reporter(f"{value.value:>18,.8f} {value.token.name}")
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@staticmethod
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def find_by_symbol(values: typing.Sequence[typing.Optional["TokenValue"]], symbol: str) -> "TokenValue":
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found = [
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value for value in values if value is not None and value.token is not None and value.token.symbol_matches(symbol)]
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if len(found) == 0:
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raise Exception(f"Token '{symbol}' not found in token values: {values}")
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if len(found) > 1:
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raise Exception(f"Token '{symbol}' matched multiple tokens in values: {values}")
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return found[0]
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@staticmethod
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def find_by_mint(values: typing.Sequence[typing.Optional["TokenValue"]], mint: PublicKey) -> "TokenValue":
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found = [value for value in values if value is not None and value.token is not None and value.token.mint == mint]
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if len(found) == 0:
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raise Exception(f"Token '{mint}' not found in token values: {values}")
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if len(found) > 1:
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raise Exception(f"Token '{mint}' matched multiple tokens in values: {values}")
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return found[0]
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@staticmethod
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def find_by_token(values: typing.Sequence[typing.Optional["TokenValue"]], token: Token) -> "TokenValue":
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return TokenValue.find_by_mint(values, token.mint)
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@staticmethod
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def changes(before: typing.Sequence["TokenValue"], after: typing.Sequence["TokenValue"]) -> typing.Sequence["TokenValue"]:
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changes: typing.List[TokenValue] = []
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for before_balance in before:
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after_balance = TokenValue.find_by_token(after, before_balance.token)
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result = TokenValue(before_balance.token, after_balance.value - before_balance.value)
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changes += [result]
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return changes
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def __add__(self, token_value_to_add: "TokenValue") -> "TokenValue":
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if self.token != token_value_to_add.token:
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raise Exception(
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f"Cannot add TokenValues from different tokens ({self.token} and {token_value_to_add.token}).")
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return TokenValue(self.token, self.value + token_value_to_add.value)
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def __sub__(self, token_value_to_subtract: "TokenValue") -> "TokenValue":
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if self.token != token_value_to_subtract.token:
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raise Exception(
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f"Cannot subtract TokenValues from different tokens ({self.token} and {token_value_to_subtract.token}).")
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return TokenValue(self.token, self.value - token_value_to_subtract.value)
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def __eq__(self, other: typing.Any) -> bool:
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if isinstance(other, TokenValue) and self.token == other.token and self.value == other.value:
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return True
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return False
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def __str__(self) -> str:
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name = "« 𝚄𝚗-𝙽𝚊𝚖𝚎𝚍 𝚃𝚘𝚔𝚎𝚗 »"
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if self.token and self.token.name:
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name = self.token.name
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return f"« 𝚃𝚘𝚔𝚎𝚗𝚅𝚊𝚕𝚞𝚎: {self.value:>18,.8f} {name} »"
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def __repr__(self) -> str:
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return f"{self}"
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