arbret/backend/schemas.py

"""Pydantic schemas for API request/response models."""
from datetime import datetime, date, time
from typing import Generic, TypeVar

from pydantic import BaseModel, EmailStr, field_validator


class UserCredentials(BaseModel):
    """Base model for user email/password."""
    email: EmailStr
    password: str


UserCreate = UserCredentials
UserLogin = UserCredentials


class UserResponse(BaseModel):
    """Response model for authenticated user info."""
    id: int
    email: str
    roles: list[str]
    permissions: list[str]


class RegisterWithInvite(BaseModel):
    """Request model for registration with invite."""
    email: EmailStr
    password: str
    invite_identifier: str


class SumRequest(BaseModel):
    """Request model for sum calculation."""
    a: float
    b: float


class SumResponse(BaseModel):
    """Response model for sum calculation."""
    a: float
    b: float
    result: float


class CounterRecordResponse(BaseModel):
    """Response model for a counter audit record."""
    id: int
    user_email: str
    value_before: int
    value_after: int
    created_at: datetime


class SumRecordResponse(BaseModel):
    """Response model for a sum audit record."""
    id: int
    user_email: str
    a: float
    b: float
    result: float
    created_at: datetime


RecordT = TypeVar("RecordT", bound=BaseModel)


class PaginatedResponse(BaseModel, Generic[RecordT]):
    """Generic paginated response wrapper."""
    records: list[RecordT]
    total: int
    page: int
    per_page: int
    total_pages: int


PaginatedCounterRecords = PaginatedResponse[CounterRecordResponse]
PaginatedSumRecords = PaginatedResponse[SumRecordResponse]


class ProfileResponse(BaseModel):
    """Response model for profile data."""
    contact_email: str | None
    telegram: str | None
    signal: str | None
    nostr_npub: str | None
    godfather_email: str | None = None


class ProfileUpdate(BaseModel):
    """Request model for updating profile."""
    contact_email: str | None = None
    telegram: str | None = None
    signal: str | None = None
    nostr_npub: str | None = None


class InviteCheckResponse(BaseModel):
    """Response for invite check endpoint."""
    valid: bool
    status: str | None = None
    error: str | None = None


class InviteCreate(BaseModel):
    """Request model for creating an invite."""
    godfather_id: int


class InviteResponse(BaseModel):
    """Response model for invite data (admin view)."""
    id: int
    identifier: str
    godfather_id: int
    godfather_email: str
    status: str
    used_by_id: int | None
    used_by_email: str | None
    created_at: datetime
    spent_at: datetime | None
    revoked_at: datetime | None


class UserInviteResponse(BaseModel):
    """Response model for a user's invite (simpler than admin view)."""
    id: int
    identifier: str
    status: str
    used_by_email: str | None
    created_at: datetime
    spent_at: datetime | None


PaginatedInviteRecords = PaginatedResponse[InviteResponse]


class AdminUserResponse(BaseModel):
    """Minimal user info for admin dropdowns."""
    id: int
    email: str


# =============================================================================
# Availability Schemas
# =============================================================================

class TimeSlot(BaseModel):
    """A single time slot (start and end time)."""
    start_time: time
    end_time: time
    
    @field_validator("start_time", "end_time")
    @classmethod
    def validate_15min_boundary(cls, v: time) -> time:
        """Ensure times are on 15-minute boundaries."""
        if v.minute not in (0, 15, 30, 45):
            raise ValueError("Time must be on 15-minute boundary (:00, :15, :30, :45)")
        if v.second != 0 or v.microsecond != 0:
            raise ValueError("Time must not have seconds or microseconds")
        return v


class AvailabilityDay(BaseModel):
    """Availability for a single day."""
    date: date
    slots: list[TimeSlot]


class AvailabilityResponse(BaseModel):
    """Response model for availability query."""
    days: list[AvailabilityDay]


class SetAvailabilityRequest(BaseModel):
    """Request to set availability for a specific date."""
    date: date
    slots: list[TimeSlot]


class CopyAvailabilityRequest(BaseModel):
    """Request to copy availability from one day to others."""
    source_date: date
    target_dates: list[date]


# =============================================================================
# Booking Schemas
# =============================================================================

class BookableSlot(BaseModel):
    """A bookable 15-minute slot."""
    start_time: datetime
    end_time: datetime


class AvailableSlotsResponse(BaseModel):
    """Response for available slots on a given date."""
    date: date
    slots: list[BookableSlot]


class BookingRequest(BaseModel):
    """Request to book an appointment."""
    slot_start: datetime
    note: str | None = None

    @field_validator("note")
    @classmethod
    def validate_note_length(cls, v: str | None) -> str | None:
        if v is not None and len(v) > 144:
            raise ValueError("Note must be at most 144 characters")
        return v


class AppointmentResponse(BaseModel):
    """Response model for an appointment."""
    id: int
    user_id: int
    user_email: str
    slot_start: datetime
    slot_end: datetime
    note: str | None
    status: str
    created_at: datetime
    cancelled_at: datetime | None


PaginatedAppointments = PaginatedResponse[AppointmentResponse]


# =============================================================================
# Meta/Constants Schemas
# =============================================================================

class ConstantsResponse(BaseModel):
    """Response model for shared constants."""
    permissions: list[str]
    roles: list[str]
    invite_statuses: list[str]