160 lines
4.3 KiB
Python
160 lines
4.3 KiB
Python
import json
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import time
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from sqlite3 import Row
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from typing import List, Optional
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from pydantic import BaseModel
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from .helpers import sign_message_hash
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from .nostr.event import NostrEvent
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######################################## MERCHANT ########################################
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class MerchantConfig(BaseModel):
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name: Optional[str]
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class PartialMerchant(BaseModel):
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private_key: str
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public_key: str
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config: MerchantConfig = MerchantConfig()
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class Merchant(PartialMerchant):
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id: str
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def sign_hash(self, hash: bytes) -> str:
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return sign_message_hash(self.private_key, hash)
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@classmethod
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def from_row(cls, row: Row) -> "Merchant":
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merchant = cls(**dict(row))
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merchant.config = MerchantConfig(**json.loads(row["meta"]))
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return merchant
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######################################## ZONES ########################################
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class PartialZone(BaseModel):
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name: Optional[str]
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currency: str
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cost: float
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countries: List[str] = []
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class Zone(PartialZone):
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id: str
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@classmethod
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def from_row(cls, row: Row) -> "Zone":
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zone = cls(**dict(row))
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zone.countries = json.loads(row["regions"])
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return zone
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######################################## STALLS ########################################
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class StallConfig(BaseModel):
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"""Last published nostr event id for this Stall"""
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event_id: Optional[str]
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image_url: Optional[str]
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description: Optional[str]
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class PartialStall(BaseModel):
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wallet: str
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name: str
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currency: str = "sat"
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shipping_zones: List[Zone] = []
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config: StallConfig = StallConfig()
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def validate_stall(self):
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for z in self.shipping_zones:
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if z.currency != self.currency:
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raise ValueError(
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f"Sipping zone '{z.name}' has different currency than stall."
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)
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class Stall(PartialStall):
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id: str
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def to_nostr_event(self, pubkey: str) -> NostrEvent:
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content = {
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"name": self.name,
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"description": self.config.description,
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"currency": self.currency,
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"shipping": [dict(z) for z in self.shipping_zones],
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}
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event = NostrEvent(
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pubkey=pubkey,
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created_at=round(time.time()),
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kind=30005,
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tags=[["d", self.id]],
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content=json.dumps(content, separators=(",", ":"), ensure_ascii=False),
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)
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event.id = event.event_id
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return event
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def to_nostr_delete_event(self, pubkey: str) -> NostrEvent:
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delete_event = NostrEvent(
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pubkey=pubkey,
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created_at=round(time.time()),
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kind=5,
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tags=[["e", self.config.event_id]],
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content=f"Stall '{self.name}' deleted",
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)
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delete_event.id = delete_event.event_id
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return delete_event
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@classmethod
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def from_row(cls, row: Row) -> "Stall":
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stall = cls(**dict(row))
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stall.config = StallConfig(**json.loads(row["meta"]))
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stall.shipping_zones = [Zone(**z) for z in json.loads(row["zones"])]
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return stall
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######################################## STALLS ########################################
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class PartialProduct(BaseModel):
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stall_id: str
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name: str
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categories: List[str] = []
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description: Optional[str]
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image: Optional[str]
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price: float
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quantity: int
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def validate_product(self):
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if self.image:
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image_is_url = self.image.startswith("https://") or self.image.startswith(
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"http://"
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)
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if not image_is_url:
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def size(b64string):
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return int((len(b64string) * 3) / 4 - b64string.count("=", -2))
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image_size = size(self.image) / 1024
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if image_size > 100:
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raise ValueError(
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f"""
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Image size is too big, {int(image_size)}Kb.
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Max: 100kb, Compress the image at https://tinypng.com, or use an URL."""
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)
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class Product(PartialProduct):
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id: str
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@classmethod
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def from_row(cls, row: Row) -> "Product":
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product = cls(**dict(row))
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product.categories = json.loads(row["category_list"])
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return product
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