Add Items to PoS (#31)

* add items table and models
* add and update items
* merchant UI done
* show QR code #18
* pos with items
* add description, tax and fix UI
* import export JSON

migrations.py

@@ -87,3 +87,15 @@ async def m005_initial(db):
         );
     """
     )
+
+
+async def m006_items(db):
+    """
+    Add items to tpos table for storing various items (JSON format)
+    See `Item` class in models.
+    """
+    await db.execute(
+        """
+        ALTER TABLE tpos.pos ADD items TEXT DEFAULT '[]';
+        """
+    )

models.py

@@ -1,5 +1,5 @@
 from sqlite3 import Row
-from typing import Optional, Any
+from typing import Optional, Any, List
 
 from fastapi import Request
 from lnurl import Lnurl, LnurlWithdrawResponse
@@ -33,6 +33,7 @@ class TPoS(BaseModel):
     withdrawamt: int
     withdrawtime: int
     withdrawbtwn: int
+    items: Optional[str]
 
     @classmethod
     def from_row(cls, row: Row) -> "TPoS":
@@ -52,6 +53,7 @@ class TPoSClean(BaseModel):
     withdrawamt: int
     withdrawtime: int
     withdrawbtwn: int
+    items: Optional[str]
 
     @classmethod
     def from_row(cls, row: Row) -> "TPoSClean":
@@ -102,3 +104,16 @@ class HashCheck(BaseModel):
 
 class PayLnurlWData(BaseModel):
     lnurl: str
+
+
+class Item(BaseModel):
+    image: Optional[str]
+    price: float
+    title: str
+    description: Optional[str]
+    tax: Optional[float] = 0.0
+    disabled: bool = False
+
+
+class CreateUpdateItemData(BaseModel):
+    items: List[Item]