Preliminary version seemingly functional

data/example.ledger

@@ -29,7 +29,7 @@
 ; commodity $
 
 2008/01/01 income
-    assets:bank:checking  $1
+    assets:bank:checking  $1.45
     income:salary
 
 2008/06/01 gift

src/db.py

@@ -1,7 +1,7 @@
 import sqlite3
 from typing import List
 
-from ledger import Transaction
+from ledger import Posting, Transaction
 
 
 class CursorContextManager:
@@ -38,17 +38,53 @@ def create_tables(cursor: sqlite3.Cursor) -> None:
         """
         CREATE TABLE transactions
         (
+            id integer,
             date text,
-            check_num text,
+            comment text,
-            note text,
-            account text,
-            amount real,
             cleared integer,
             tags text
         )
         """
     )
 
+    cursor.execute(
+        """
+        CREATE TABLE postings
+        (
+            transaction_id integer,
+            account text,
+            amount real,
+            cleared integer,
+            tags text,
+            comment text
+        )
+        """
+    )
+
+
+def get_posting_amount(posting: Posting) -> float:
+    # TODO: Is there a way to denote that these fields are required and avoid all the None checking?
+
+    amount = posting.get("pamount")
+    if amount is None or len(amount) != 1:
+        print("Unexpected number of amounts in posting")
+        print(posting)
+        return 0
+
+    quantity = amount[0].get("aquantity")
+    if quantity is None:
+        print("Unexpected number of amounts in posting")
+        print(posting)
+        return 0
+
+    val = quantity.get("floatingPoint")
+    if val is None:
+        print("Unexpected number of amounts in posting")
+        print(posting)
+        return 0
+
+    return val
+
 
 def write_transactions(cursor: sqlite3.Cursor, txs: List[Transaction]) -> None:
     """
@@ -56,4 +92,45 @@ def write_transactions(cursor: sqlite3.Cursor, txs: List[Transaction]) -> None:
     and then store it.
     """
 
-    print(txs[0])
+    for transaction in txs:
+        cursor.execute(
+            """
+            INSERT INTO transactions
+            (
+                id, date, comment, cleared, tags
+            ) VALUES (
+                ?, ?, ?, ?, ?
+            )
+            """,
+            [
+                transaction.get("tindex"),
+                transaction.get("tdate"),
+                transaction.get("tcomment"),
+                transaction.get("tstatus"),
+                ",".join(transaction.get("ttags") or []),
+            ],
+        )
+
+        postings = transaction.get("tpostings")
+        if postings is None:
+            continue
+
+        for posting in postings:
+            cursor.execute(
+                """
+                INSERT INTO postings
+                (
+                    transaction_id, account, amount, cleared, tags, comment
+                ) VALUES (
+                    ?, ?, ?, ?, ?, ?
+                )
+                """,
+                [
+                    transaction.get("tindex"),
+                    posting.get("paccount"),
+                    get_posting_amount(posting),
+                    posting.get("pstatus"),
+                    ",".join(posting.get("ptags") or []),
+                    posting.get("pcomment"),
+                ],
+            )

src/ledger.py

@@ -7,7 +7,7 @@ import typing
 class AmountQuantity(typing.TypedDict):
     decimalMantissa: int
     decimalPlaces: int
-    floatingPoint: int
+    floatingPoint: float
 
 
 class AmountStyle(typing.TypedDict):

src/main.py

@@ -1,3 +1,8 @@
+"""
+Convert the provided ledger file into a SQLite database.
+Configure input and output files with environment variables.
+"""
+
 import os
 import os.path
 import sys