feat: init merchant

crud.py

@@ -0,0 +1,42 @@
+import json
+from typing import Optional
+
+from lnbits.helpers import urlsafe_short_hash
+
+from . import db
+from .models import Merchant, PartialMerchant
+
+
+async def create_merchant(user_id: str, m: PartialMerchant) -> Merchant:
+    merchant_id = urlsafe_short_hash()
+    await db.execute(
+        """
+        INSERT INTO nostrmarket.merchants (user_id, id, private_key, public_key, meta)
+        VALUES (?, ?, ?, ?, ?)
+        """,
+        (user_id, merchant_id, m.private_key, m.public_key, json.dumps(dict(m.config))),
+    )
+    merchant = await get_merchant(user_id, merchant_id)
+    assert merchant, "Created merchant cannot be retrieved"
+    return merchant
+
+
+async def get_merchant(user_id: str, merchant_id: str) -> Optional[Merchant]:
+    row = await db.fetchone(
+        """SELECT * FROM nostrmarket.merchants WHERE user_id = ? AND id = ?""",
+        (
+            user_id,
+            merchant_id,
+        ),
+    )
+
+    return Merchant.from_row(row) if row else None
+
+
+async def get_merchant_for_user(user_id: str) -> Optional[Merchant]:
+    row = await db.fetchone(
+        """SELECT * FROM nostrmarket.merchants WHERE user_id = ? """,
+        (user_id,),
+    )
+
+    return Merchant.from_row(row) if row else None