import uuid
from datetime import datetime

from pydantic import BaseModel, ConfigDict, Field


class RegisterRequest(BaseModel):
    username: str = Field(min_length=3, max_length=32)
    password: str = Field(min_length=8, max_length=128)
    # users.email is VARCHAR(255): without a cap here an over-long address
    # reached Postgres and surfaced as a 500 instead of a validation error.
    email: str | None = Field(default=None, max_length=255)


class UserOut(BaseModel):
    id: uuid.UUID
    username: str
    essence: int = 0
    unlocks: list[str] = Field(default_factory=list)

    model_config = ConfigDict(from_attributes=True)


class LoginRequest(BaseModel):
    username: str
    password: str


class UnlockOut(BaseModel):
    unlock_key: str
    unlocked_at: datetime

    model_config = ConfigDict(from_attributes=True)


class PurchaseOut(BaseModel):
    unlock_key: str
    unlocked_at: datetime
    essence: int


class InventoryItemOut(BaseModel):
    id: uuid.UUID
    item_type: str
    item_key: str
    payload: dict
    obtained_at: datetime

    model_config = ConfigDict(from_attributes=True)


class SigilIn(BaseModel):
    name: str = Field(min_length=1, max_length=64)
    design: dict


class SigilOut(BaseModel):
    id: uuid.UUID
    name: str
    design: dict
    created_at: datetime

    model_config = ConfigDict(from_attributes=True)


class MessageIn(BaseModel):
    """A whisper sent from one hunter to another (Workstream S)."""

    # Length rules live in routes/messages.py, not here: an empty or
    # oversized body is a 400 with in-fiction copy the UI can show, which
    # is friendlier than Pydantic's 422 validation envelope.
    to: str
    body: str