refactors

backend/schemas/exchange.py

@@ -0,0 +1,87 @@
+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]