530 lines
14 KiB
Python
530 lines
14 KiB
Python
import json
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import logging
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import os.path
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import hashlib
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from typing import Tuple, List
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from string import ascii_letters
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from decimal import Decimal, ROUND_UP
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from binascii import hexlify, unhexlify
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from google.protobuf.json_format import MessageToDict
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from torba.client.hash import Base58
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from torba.client.constants import COIN
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from lbrynet.schema.mime_types import guess_media_type
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from lbrynet.schema.base import Metadata, BaseMessageList
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from lbrynet.schema.types.v2.claim_pb2 import (
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Fee as FeeMessage,
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Location as LocationMessage,
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Language as LanguageMessage
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)
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log = logging.getLogger(__name__)
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def calculate_sha384_file_hash(file_path):
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sha384 = hashlib.sha384()
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with open(file_path, 'rb') as f:
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for chunk in iter(lambda: f.read(128 * sha384.block_size), b''):
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sha384.update(chunk)
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return sha384.digest()
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class Dimmensional(Metadata):
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__slots__ = ()
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@property
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def width(self) -> int:
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return self.message.width
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@width.setter
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def width(self, width: int):
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self.message.width = width
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@property
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def height(self) -> int:
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return self.message.height
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@height.setter
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def height(self, height: int):
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self.message.height = height
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@property
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def dimensions(self) -> Tuple[int, int]:
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return self.width, self.height
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@dimensions.setter
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def dimensions(self, dimensions: Tuple[int, int]):
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self.message.width, self.message.height = dimensions
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def _extract(self, file_metadata, field):
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try:
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setattr(self, field, file_metadata.getValues(field)[0])
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except:
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log.exception(f'Could not extract {field} from file metadata.')
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def update(self, file_metadata=None, height=None, width=None):
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if height is not None:
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self.height = height
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elif file_metadata:
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self._extract(file_metadata, 'height')
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if width is not None:
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self.width = width
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elif file_metadata:
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self._extract(file_metadata, 'width')
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class Playable(Metadata):
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__slots__ = ()
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@property
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def duration(self) -> int:
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return self.message.duration
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@duration.setter
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def duration(self, duration: int):
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self.message.duration = duration
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def update(self, file_metadata=None, duration=None):
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if duration is not None:
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self.duration = duration
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elif file_metadata:
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try:
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self.duration = file_metadata.getValues('duration')[0].seconds
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except:
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log.exception('Could not extract duration from file metadata.')
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class Image(Dimmensional):
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__slots__ = ()
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class Audio(Playable):
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__slots__ = ()
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class Video(Dimmensional, Playable):
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__slots__ = ()
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def update(self, file_metadata=None, height=None, width=None, duration=None):
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Dimmensional.update(self, file_metadata, height, width)
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Playable.update(self, file_metadata, duration)
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class Source(Metadata):
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__slots__ = ()
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def update(self, file_path=None):
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if file_path is not None:
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self.name = os.path.basename(file_path)
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self.media_type, stream_type = guess_media_type(file_path)
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if not os.path.isfile(file_path):
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raise Exception(f"File does not exist: {file_path}")
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self.size = os.path.getsize(file_path)
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if self.size == 0:
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raise Exception(f"Cannot publish empty file: {file_path}")
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self.file_hash_bytes = calculate_sha384_file_hash(file_path)
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return stream_type
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@property
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def name(self) -> str:
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return self.message.name
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@name.setter
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def name(self, name: str):
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self.message.name = name
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@property
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def size(self) -> int:
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return self.message.size
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@size.setter
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def size(self, size: int):
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self.message.size = size
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@property
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def media_type(self) -> str:
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return self.message.media_type
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@media_type.setter
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def media_type(self, media_type: str):
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self.message.media_type = media_type
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@property
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def file_hash(self) -> str:
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return hexlify(self.message.hash).decode()
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@file_hash.setter
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def file_hash(self, file_hash: str):
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self.message.hash = unhexlify(file_hash.encode())
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@property
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def file_hash_bytes(self) -> bytes:
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return self.message.hash
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@file_hash_bytes.setter
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def file_hash_bytes(self, file_hash_bytes: bytes):
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self.message.hash = file_hash_bytes
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@property
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def sd_hash(self) -> str:
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return hexlify(self.message.sd_hash).decode()
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@sd_hash.setter
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def sd_hash(self, sd_hash: str):
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self.message.sd_hash = unhexlify(sd_hash.encode())
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@property
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def sd_hash_bytes(self) -> bytes:
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return self.message.sd_hash
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@sd_hash_bytes.setter
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def sd_hash_bytes(self, sd_hash: bytes):
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self.message.sd_hash = sd_hash
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@property
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def url(self) -> str:
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return self.message.url
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@url.setter
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def url(self, url: str):
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self.message.url = url
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class Fee(Metadata):
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__slots__ = ()
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def update(self, address: str = None, currency: str = None, amount=None):
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if amount:
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currency = (currency or self.currency or '').lower()
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if not currency:
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raise Exception('In order to set a fee amount, please specify a fee currency.')
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if currency not in ('lbc', 'btc', 'usd'):
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raise Exception(f'Missing or unknown currency provided: {currency}')
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setattr(self, currency, Decimal(amount))
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elif currency:
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raise Exception('In order to set a fee currency, please specify a fee amount.')
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if address:
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if not self.currency:
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raise Exception('In order to set a fee address, please specify a fee amount and currency.')
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self.address = address
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@property
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def currency(self) -> str:
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if self.message.currency:
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return FeeMessage.Currency.Name(self.message.currency)
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@property
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def address(self) -> str:
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if self.address_bytes:
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return Base58.encode(self.address_bytes)
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@address.setter
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def address(self, address: str):
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self.address_bytes = Base58.decode(address)
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@property
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def address_bytes(self) -> bytes:
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return self.message.address
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@address_bytes.setter
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def address_bytes(self, address: bytes):
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self.message.address = address
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@property
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def amount(self) -> Decimal:
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if self.currency == 'LBC':
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return self.lbc
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if self.currency == 'BTC':
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return self.btc
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if self.currency == 'USD':
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return self.usd
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DEWIES = Decimal(COIN)
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@property
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def lbc(self) -> Decimal:
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if self.message.currency != FeeMessage.LBC:
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raise ValueError('LBC can only be returned for LBC fees.')
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return Decimal(self.message.amount / self.DEWIES)
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@lbc.setter
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def lbc(self, amount: Decimal):
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self.dewies = int(amount * self.DEWIES)
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@property
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def dewies(self) -> int:
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if self.message.currency != FeeMessage.LBC:
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raise ValueError('Dewies can only be returned for LBC fees.')
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return self.message.amount
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@dewies.setter
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def dewies(self, amount: int):
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self.message.amount = amount
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self.message.currency = FeeMessage.LBC
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SATOSHIES = Decimal(COIN)
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@property
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def btc(self) -> Decimal:
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if self.message.currency != FeeMessage.BTC:
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raise ValueError('BTC can only be returned for BTC fees.')
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return Decimal(self.message.amount / self.SATOSHIES)
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@btc.setter
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def btc(self, amount: Decimal):
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self.satoshis = int(amount * self.SATOSHIES)
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@property
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def satoshis(self) -> int:
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if self.message.currency != FeeMessage.BTC:
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raise ValueError('Satoshies can only be returned for BTC fees.')
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return self.message.amount
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@satoshis.setter
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def satoshis(self, amount: int):
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self.message.amount = amount
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self.message.currency = FeeMessage.BTC
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PENNIES = Decimal('100.0')
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PENNY = Decimal('0.01')
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@property
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def usd(self) -> Decimal:
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if self.message.currency != FeeMessage.USD:
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raise ValueError('USD can only be returned for USD fees.')
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return Decimal(self.message.amount / self.PENNIES)
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@usd.setter
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def usd(self, amount: Decimal):
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self.pennies = int(amount.quantize(self.PENNY, ROUND_UP) * self.PENNIES)
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@property
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def pennies(self) -> int:
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if self.message.currency != FeeMessage.USD:
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raise ValueError('Pennies can only be returned for USD fees.')
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return self.message.amount
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@pennies.setter
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def pennies(self, amount: int):
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self.message.amount = amount
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self.message.currency = FeeMessage.USD
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class ClaimReference(Metadata):
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__slots__ = ()
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@property
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def claim_id(self) -> str:
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return hexlify(self.claim_hash[::-1]).decode()
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@claim_id.setter
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def claim_id(self, claim_id: str):
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self.claim_hash = unhexlify(claim_id)[::-1]
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@property
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def claim_hash(self) -> bytes:
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return self.message.claim_hash
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@claim_hash.setter
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def claim_hash(self, claim_hash: bytes):
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self.message.claim_hash = claim_hash
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class ClaimList(BaseMessageList[ClaimReference]):
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__slots__ = ()
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item_class = ClaimReference
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@property
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def _message(self):
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return self.message.claim_references
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def append(self, value):
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self.add().claim_id = value
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@property
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def ids(self) -> List[str]:
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return [c.claim_id for c in self]
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class Language(Metadata):
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__slots__ = ()
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@property
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def langtag(self) -> str:
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langtag = []
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if self.language:
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langtag.append(self.language)
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if self.script:
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langtag.append(self.script)
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if self.region:
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langtag.append(self.region)
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return '-'.join(langtag)
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@langtag.setter
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def langtag(self, langtag: str):
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parts = langtag.split('-')
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self.language = parts.pop(0)
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if parts and len(parts[0]) == 4:
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self.script = parts.pop(0)
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if parts and len(parts[0]) == 2:
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self.region = parts.pop(0)
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assert not parts, f"Failed to parse language tag: {langtag}"
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@property
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def language(self) -> str:
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if self.message.language:
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return LanguageMessage.Language.Name(self.message.language)
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@language.setter
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def language(self, language: str):
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self.message.language = LanguageMessage.Language.Value(language)
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@property
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def script(self) -> str:
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if self.message.script:
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return LanguageMessage.Script.Name(self.message.script)
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@script.setter
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def script(self, script: str):
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self.message.script = LanguageMessage.Script.Value(script)
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@property
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def region(self) -> str:
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if self.message.region:
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return LocationMessage.Country.Name(self.message.region)
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@region.setter
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def region(self, region: str):
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self.message.region = LocationMessage.Country.Value(region)
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class LanguageList(BaseMessageList[Language]):
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__slots__ = ()
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item_class = Language
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def append(self, value: str):
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self.add().langtag = value
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class Location(Metadata):
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__slots__ = ()
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def from_value(self, value):
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if isinstance(value, str) and value.startswith('{'):
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value = json.loads(value)
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if isinstance(value, dict):
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for key, val in value.items():
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setattr(self, key, val)
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elif isinstance(value, str):
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parts = value.split(':')
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if len(parts) > 2 or (parts[0] and parts[0][0] in ascii_letters):
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country = parts and parts.pop(0)
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if country:
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self.country = country
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state = parts and parts.pop(0)
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if state:
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self.state = state
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city = parts and parts.pop(0)
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if city:
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self.city = city
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code = parts and parts.pop(0)
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if code:
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self.code = code
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latitude = parts and parts.pop(0)
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if latitude:
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self.latitude = latitude
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longitude = parts and parts.pop(0)
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if longitude:
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self.longitude = longitude
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else:
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raise ValueError(f'Could not parse country value: {value}')
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def to_dict(self):
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d = MessageToDict(self.message)
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if self.message.longitude:
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d['longitude'] = self.longitude
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if self.message.latitude:
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d['latitude'] = self.latitude
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return d
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@property
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def country(self) -> str:
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if self.message.country:
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return LocationMessage.Country.Name(self.message.country)
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@country.setter
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def country(self, country: str):
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self.message.country = LocationMessage.Country.Value(country)
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@property
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def state(self) -> str:
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return self.message.state
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@state.setter
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def state(self, state: str):
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self.message.state = state
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@property
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def city(self) -> str:
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return self.message.city
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@city.setter
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def city(self, city: str):
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self.message.city = city
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@property
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def code(self) -> str:
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return self.message.code
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@code.setter
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def code(self, code: str):
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self.message.code = code
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GPS_PRECISION = Decimal('10000000')
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@property
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def latitude(self) -> str:
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if self.message.latitude:
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return str(Decimal(self.message.latitude) / self.GPS_PRECISION)
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@latitude.setter
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def latitude(self, latitude: str):
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latitude = Decimal(latitude)
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assert -90 <= latitude <= 90, "Latitude must be between -90 and 90 degrees."
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self.message.latitude = int(latitude * self.GPS_PRECISION)
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@property
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def longitude(self) -> str:
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if self.message.longitude:
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return str(Decimal(self.message.longitude) / self.GPS_PRECISION)
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@longitude.setter
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def longitude(self, longitude: str):
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longitude = Decimal(longitude)
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assert -180 <= longitude <= 180, "Longitude must be between -180 and 180 degrees."
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self.message.longitude = int(longitude * self.GPS_PRECISION)
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class LocationList(BaseMessageList[Location]):
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__slots__ = ()
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item_class = Location
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def append(self, value):
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self.add().from_value(value)
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