[Refactor] Export ops move to Client interface

Introduce new `Manager` parameter database to use new DB client API.
Fix TransactionCategory format.
Fix Client kwargs type.

pfbudget/cli/argparser.py

@@ -67,7 +67,7 @@ def argparser() -> argparse.ArgumentParser:
 
     pimport = subparsers.add_parser("import")
     pimport.set_defaults(op=Operation.Import)
-    pimport.add_argument("file", nargs=1, type=str)
+    file_options(pimport)
 
     # Parse from .csv
     parse = subparsers.add_parser("parse")

pfbudget/core/manager.py

@@ -1,10 +1,12 @@
 import csv
+import json
 from pathlib import Path
 import pickle
+from typing import Optional
 import webbrowser
 
 from pfbudget.common.types import Operation
-from pfbudget.db.postgresql import DbClient
+from pfbudget.db.client import Client
 from pfbudget.db.model import (
     Bank,
     BankTransaction,
@@ -24,6 +26,7 @@ from pfbudget.db.model import (
     Transaction,
     TransactionCategory,
 )
+from pfbudget.db.postgresql import DbClient
 from pfbudget.extract.nordigen import NordigenClient, NordigenCredentialsManager
 from pfbudget.extract.parsers import parse_data
 from pfbudget.extract.psd2 import PSD2Extractor
@@ -35,6 +38,7 @@ from pfbudget.transform.tagger import Tagger
 class Manager:
     def __init__(self, db: str, verbosity: int = 0):
         self._db = db
+        self._database: Optional[Client] = None
         self._verbosity = verbosity
 
     def action(self, op: Operation, params=None):
@@ -49,10 +53,7 @@ class Manager:
                 pass
 
             case Operation.Transactions:
-                with self.db.session() as session:
-                    transactions = session.get(Transaction)
-                    ret = [t.format for t in transactions]
-                return ret
+                return [t.format for t in self.database.select(Transaction)]
 
             case Operation.Parse:
                 # Adapter for the parse_data method. Can be refactored.
@@ -263,8 +264,10 @@ class Manager:
                     session.insert(transactions)
 
             case Operation.Export:
-                with self.db.session() as session:
-                    self.dump(params[0], params[1], sorted(session.get(Transaction)))
+                with self.database.session as session:
+                    self.dump(
+                        params[0], params[1], self.database.select(Transaction, session)
+                    )
 
             case Operation.Import:
                 transactions = []
@@ -301,8 +304,8 @@ class Manager:
                         session.insert(transactions)
 
             case Operation.ExportBanks:
-                with self.db.session() as session:
-                    self.dump(params[0], params[1], session.get(Bank))
+                with self.database.session as session:
+                    self.dump(params[0], params[1], self.database.select(Bank, session))
 
             case Operation.ImportBanks:
                 banks = []
@@ -317,8 +320,12 @@ class Manager:
                         session.insert(banks)
 
             case Operation.ExportCategoryRules:
-                with self.db.session() as session:
-                    self.dump(params[0], params[1], session.get(CategoryRule))
+                with self.database.session as session:
+                    self.dump(
+                        params[0],
+                        params[1],
+                        self.database.select(CategoryRule, session),
+                    )
 
             case Operation.ImportCategoryRules:
                 rules = [CategoryRule(**row) for row in self.load(params[0], params[1])]
@@ -328,8 +335,10 @@ class Manager:
                         session.insert(rules)
 
             case Operation.ExportTagRules:
-                with self.db.session() as session:
-                    self.dump(params[0], params[1], session.get(TagRule))
+                with self.database.session as session:
+                    self.dump(
+                        params[0], params[1], self.database.select(TagRule, session)
+                    )
 
             case Operation.ImportTagRules:
                 rules = [TagRule(**row) for row in self.load(params[0], params[1])]
@@ -339,8 +348,10 @@ class Manager:
                         session.insert(rules)
 
             case Operation.ExportCategories:
-                with self.db.session() as session:
-                    self.dump(params[0], params[1], session.get(Category))
+                with self.database.session as session:
+                    self.dump(
+                        params[0], params[1], self.database.select(Category, session)
+                    )
 
             case Operation.ImportCategories:
                 # rules = [Category(**row) for row in self.load(params[0])]
@@ -363,8 +374,12 @@ class Manager:
                         session.insert(categories)
 
             case Operation.ExportCategoryGroups:
-                with self.db.session() as session:
-                    self.dump(params[0], params[1], session.get(CategoryGroup))
+                with self.database.session as session:
+                    self.dump(
+                        params[0],
+                        params[1],
+                        self.database.select(CategoryGroup, session),
+                    )
 
             case Operation.ImportCategoryGroups:
                 groups = [
@@ -397,6 +412,9 @@ class Manager:
         elif format == "csv":
             with open(fn, "w", newline="") as f:
                 csv.writer(f).writerows([e.format.values() for e in sequence])
+        elif format == "json":
+            with open(fn, "w", newline="") as f:
+                json.dump([e.format for e in sequence], f, indent=4, default=str)
         else:
             print("format not well specified")
 
@@ -418,9 +436,15 @@ class Manager:
         return False
 
     @property
-    def db(self) -> DbClient:
+    def db(self) -> Client:
         return DbClient(self._db, self._verbosity > 2)
 
+    @property
+    def database(self) -> Client:
+        if not self._database:
+            self._database = Client(self._db, echo=self._verbosity > 2)
+        return self._database
+
     @db.setter
     def db(self, url: str):
         self._db = url

pfbudget/db/client.py

@@ -8,7 +8,7 @@ from pfbudget.db.model import Transaction
 
 
 class Client:
-    def __init__(self, url: str, **kwargs: dict[str, Any]) -> None:
+    def __init__(self, url: str, **kwargs: Any) -> None:
         assert url, "Database URL is empty!"
         self._engine = create_engine(url, **kwargs)
         self._sessionmaker: Optional[sessionmaker[Session]] = None

pfbudget/db/model.py

@@ -216,7 +216,9 @@ class TransactionCategory(Base, Export):
 
     @property
     def format(self):
-        return dict(name=self.name, selector=self.selector.format)
+        return dict(
+            name=self.name, selector=self.selector.format if self.selector else None
+        )
 
 
 class Note(Base):