from datetime import date, datetime

from pydantic import BaseModel

from .pagination import PaginatedResponse


class ExchangeRequest(BaseModel):
    """Request to create an exchange trade."""

    slot_start: datetime
    direction: str  # "buy" or "sell"
    bitcoin_transfer_method: str  # "onchain" or "lightning"
    eur_amount: int  # EUR cents (e.g., 10000 = €100)


class ExchangeUserContact(BaseModel):
    """User contact info for admin view."""

    email: str
    contact_email: str | None
    telegram: str | None
    signal: str | None
    nostr_npub: str | None


class ExchangeResponse(BaseModel):
    """Response model for an exchange trade."""

    id: int  # Keep for backward compatibility, but prefer public_id
    public_id: str  # UUID as string
    user_id: int
    user_email: str
    slot_start: datetime
    slot_end: datetime
    direction: str
    bitcoin_transfer_method: str
    eur_amount: int  # EUR cents
    sats_amount: int  # Satoshis
    market_price_eur: float
    agreed_price_eur: float
    premium_percentage: int
    status: str
    created_at: datetime
    cancelled_at: datetime | None
    completed_at: datetime | None


class AdminExchangeResponse(BaseModel):
    """Response model for admin exchange view (includes user contact)."""

    id: int  # Keep for backward compatibility, but prefer public_id
    public_id: str  # UUID as string
    user_id: int
    user_email: str
    user_contact: ExchangeUserContact
    slot_start: datetime
    slot_end: datetime
    direction: str
    bitcoin_transfer_method: str
    eur_amount: int
    sats_amount: int
    market_price_eur: float
    agreed_price_eur: float
    premium_percentage: int
    status: str
    created_at: datetime
    cancelled_at: datetime | None
    completed_at: datetime | None


PaginatedExchanges = PaginatedResponse[ExchangeResponse]
PaginatedAdminExchanges = PaginatedResponse[AdminExchangeResponse]


class BookableSlot(BaseModel):
    """A single bookable time slot."""

    start_time: datetime
    end_time: datetime


class AvailableSlotsResponse(BaseModel):
    """Response containing available slots for a date."""

    date: date
    slots: list[BookableSlot]