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# Copyright (C) 2024 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
from datetime import datetime
from dataclasses import dataclass
from enum import IntEnum
from collections import defaultdict
from PySide6.QtCore import (QAbstractListModel, QEnum, Qt, QModelIndex, Slot,
QByteArray)
from PySide6.QtQml import QmlElement
QML_IMPORT_NAME = "Finance"
QML_IMPORT_MAJOR_VERSION = 1
@QmlElement
class FinanceModel(QAbstractListModel):
@QEnum
class FinanceRole(IntEnum):
ItemNameRole = Qt.ItemDataRole.DisplayRole
CategoryRole = Qt.ItemDataRole.UserRole
CostRole = Qt.ItemDataRole.UserRole + 1
DateRole = Qt.ItemDataRole.UserRole + 2
MonthRole = Qt.ItemDataRole.UserRole + 3
@dataclass
class Finance:
item_name: str
category: str
cost: float
date: str
@property
def month(self):
return datetime.strptime(self.date, "%d-%m-%Y").strftime("%B %Y")
def __init__(self, parent=None) -> None:
super().__init__(parent)
self.m_finances = []
self.m_finances.append(self.Finance("Mobile Prepaid", "Electronics", 20.00, "15-02-2024"))
self.m_finances.append(self.Finance("Groceries-Feb-Week1", "Groceries", 60.75,
"16-01-2024"))
self.m_finances.append(self.Finance("Bus Ticket", "Transport", 5.50, "17-01-2024"))
self.m_finances.append(self.Finance("Book", "Education", 25.00, "18-01-2024"))
def rowCount(self, parent=QModelIndex()):
return len(self.m_finances)
def data(self, index: QModelIndex, role: int):
row = index.row()
if row < self.rowCount():
finance = self.m_finances[row]
if role == FinanceModel.FinanceRole.ItemNameRole:
return finance.item_name
if role == FinanceModel.FinanceRole.CategoryRole:
return finance.category
if role == FinanceModel.FinanceRole.CostRole:
return finance.cost
if role == FinanceModel.FinanceRole.DateRole:
return finance.date
if role == FinanceModel.FinanceRole.MonthRole:
return finance.month
return None
@Slot(result=dict)
def getCategoryData(self):
category_data = defaultdict(float)
for finance in self.m_finances:
category_data[finance.category] += finance.cost
return dict(category_data)
def roleNames(self):
roles = super().roleNames()
roles[FinanceModel.FinanceRole.ItemNameRole] = QByteArray(b"item_name")
roles[FinanceModel.FinanceRole.CategoryRole] = QByteArray(b"category")
roles[FinanceModel.FinanceRole.CostRole] = QByteArray(b"cost")
roles[FinanceModel.FinanceRole.DateRole] = QByteArray(b"date")
roles[FinanceModel.FinanceRole.MonthRole] = QByteArray(b"month")
return roles
@Slot(int, result='QVariantMap')
def get(self, row: int):
finance = self.m_finances[row]
return {"item_name": finance.item_name, "category": finance.category,
"cost": finance.cost, "date": finance.date}
@Slot(str, str, float, str)
def append(self, item_name: str, category: str, cost: float, date: str):
finance = self.Finance(item_name, category, cost, date)
self.beginInsertRows(QModelIndex(), 0, 0) # Insert at the front
self.m_finances.insert(0, finance) # Insert at the front of the list
self.endInsertRows()
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