from datetime import date as DateType
from decimal import Decimal

from pydantic import BaseModel


class NetWorthPoint(BaseModel):
    date: DateType
    total_assets: Decimal
    total_liabilities: Decimal
    net_worth: Decimal
    base_currency: str


class NetWorthReport(BaseModel):
    points: list[NetWorthPoint]
    current_net_worth: Decimal
    change_30d: Decimal
    change_30d_pct: Decimal
    base_currency: str


class IncomeExpensePoint(BaseModel):
    month: str  # "2024-01"
    income: Decimal
    expenses: Decimal
    net: Decimal


class IncomeExpenseReport(BaseModel):
    points: list[IncomeExpensePoint]
    total_income: Decimal
    total_expenses: Decimal
    avg_monthly_income: Decimal
    avg_monthly_expenses: Decimal
    currency: str


class CashFlowPoint(BaseModel):
    date: DateType
    inflow: Decimal
    outflow: Decimal
    net: Decimal
    running_balance: Decimal


class CashFlowReport(BaseModel):
    points: list[CashFlowPoint]
    total_inflow: Decimal
    total_outflow: Decimal
    currency: str


class CategoryBreakdownItem(BaseModel):
    category_id: str | None
    category_name: str
    amount: Decimal
    percent: Decimal
    transaction_count: int


class CategoryBreakdownReport(BaseModel):
    items: list[CategoryBreakdownItem]
    total: Decimal
    currency: str
    date_from: DateType
    date_to: DateType


class BudgetVsActualItem(BaseModel):
    budget_id: str
    budget_name: str
    category_name: str
    budgeted: Decimal
    actual: Decimal
    variance: Decimal
    percent_used: Decimal


class BudgetVsActualReport(BaseModel):
    items: list[BudgetVsActualItem]
    total_budgeted: Decimal
    total_actual: Decimal
    currency: str


class SpendingTrendPoint(BaseModel):
    month: str
    category_name: str
    amount: Decimal


class SpendingTrendsReport(BaseModel):
    points: list[SpendingTrendPoint]
    categories: list[str]
    currency: str


class SavingsRatePoint(BaseModel):
    month: str
    income: Decimal
    expenses: Decimal
    savings: Decimal
    savings_rate: Decimal


class SavingsRateReport(BaseModel):
    points: list[SavingsRatePoint]
    avg_savings_rate: Decimal
    currency: str


class BalanceSheetAccount(BaseModel):
    id: str
    name: str
    type: str
    balance: Decimal
    currency: str


class BalanceSheetGroup(BaseModel):
    label: str
    type_keys: list[str]
    accounts: list[BalanceSheetAccount]
    subtotal: Decimal


class BalanceSheetReport(BaseModel):
    asset_groups: list[BalanceSheetGroup]
    liability_groups: list[BalanceSheetGroup]
    total_assets: Decimal
    total_liabilities: Decimal
    net_worth: Decimal
    currency: str