from dataclasses import dataclass, field
from datetime import datetime
from typing import List, Optional


@dataclass
class OfferLogEntry:
    """Represents a single audit snapshot from merchant_offers_lock."""

    id: int
    offer_id: int
    created_at: Optional[datetime]
    archived_by: Optional[int]
    archived_by_name: Optional[str]


@dataclass
class DisbursementPhaseEntry:
    """Represents one disbursement phase from the disbursement_offers table."""

    id: int
    offer_id: int
    phase: Optional[int]
    per_disbursement_amount: Optional[float]
    day_from_disbursement_date: Optional[int]
    disbursement_at: Optional[str]


@dataclass
class MerchantOffer:
    """Domain entity for a merchant financing offer."""

    id: int
    merchant_id: int
    interest_type_id: Optional[int] = None
    payment_frequency: Optional[int] = None
    tenure: Optional[int] = None
    advance_emi: Optional[int] = None
    interest_rate: Optional[float] = None
    subvention: Optional[float] = None
    processing_fee: Optional[float] = None
    processing_fee_type: Optional[str] = None
    advance_type: Optional[str] = None
    status: Optional[int] = None
    reason: Optional[str] = None
    disable_offer_status: Optional[int] = None
    subvention_type_id: Optional[int] = None
    monthly_irr: Optional[float] = None
    annualised_irr: Optional[float] = None
    disbursement_method: Optional[int] = None
    disbursement_at: Optional[str] = None
    processing_fee_first_emi: Optional[int] = None
    offer_log: List[OfferLogEntry] = field(default_factory=list)
    disbursement_phases: List[DisbursementPhaseEntry] = field(default_factory=list)