feat: publish event on C_UD for stalls

models.py

@@ -1,10 +1,13 @@
 import json
+import time
 from sqlite3 import Row
 from typing import List, Optional
 
-from fastapi import Query
 from pydantic import BaseModel
 
+from .helpers import sign_message_hash
+from .nostr.event import NostrEvent
+
 
 ######################################## MERCHANT ########################################
 class MerchantConfig(BaseModel):
@@ -20,6 +23,9 @@ class PartialMerchant(BaseModel):
 class Merchant(PartialMerchant):
     id: str
 
+    def sign_hash(self, hash: bytes) -> str:
+        return sign_message_hash(self.private_key, hash)
+
     @classmethod
     def from_row(cls, row: Row) -> "Merchant":
         merchant = cls(**dict(row))
@@ -49,24 +55,57 @@ class Zone(PartialZone):
 
 
 class StallConfig(BaseModel):
+    """Last published nostr event id for this Stall"""
+
+    event_id: Optional[str]
     image_url: Optional[str]
-    fiat_base_multiplier: int = 1  # todo: reminder wht is this for?
+    description: Optional[str]
 
 
 class PartialStall(BaseModel):
     wallet: str
     name: str
     currency: str = "sat"
-    shipping_zones: List[str] = []
+    shipping_zones: List[PartialZone] = []
     config: StallConfig = StallConfig()
 
 
 class Stall(PartialStall):
     id: str
 
+    def to_nostr_event(self, pubkey: str) -> NostrEvent:
+        content = {
+            "name": self.name,
+            "description": self.config.description,
+            "currency": self.currency,
+            "shipping": [dict(z) for z in self.shipping_zones],
+        }
+        event = NostrEvent(
+            pubkey=pubkey,
+            created_at=round(time.time()),
+            kind=30005,
+            tags=[["d", self.id]],
+            content=json.dumps(content, separators=(",", ":"), ensure_ascii=False),
+        )
+        event.id = event.event_id
+
+        return event
+
+    def to_nostr_delete_event(self, pubkey: str) -> NostrEvent:
+        delete_event = NostrEvent(
+            pubkey=pubkey,
+            created_at=round(time.time()),
+            kind=5,
+            tags=[["e", self.config.event_id]],
+            content="Stall deleted",
+        )
+        delete_event.id = delete_event.event_id
+
+        return delete_event
+
     @classmethod
     def from_row(cls, row: Row) -> "Stall":
         stall = cls(**dict(row))
         stall.config = StallConfig(**json.loads(row["meta"]))
-        stall.shipping_zones = json.loads(row["zones"])
+        stall.shipping_zones = [PartialZone(**z) for z in json.loads(row["zones"])]
         return stall