from datetime import datetime

from pydantic import BaseModel, ConfigDict, EmailStr, Field
from typing import Literal


PrivacyLevel = Literal["everyone", "contacts", "nobody"]
GroupInvitePrivacyLevel = Literal["everyone", "contacts"]


class UserBase(BaseModel):
    name: str = Field(min_length=1, max_length=100)
    username: str = Field(min_length=3, max_length=50)
    email: EmailStr


class UserCreate(UserBase):
    password: str = Field(min_length=8, max_length=128)


class UserRead(UserBase):
    model_config = ConfigDict(from_attributes=True)

    id: int
    avatar_url: str | None = None
    bio: str | None = None
    email_verified: bool
    allow_private_messages: bool
    privacy_last_seen: PrivacyLevel = "everyone"
    privacy_avatar: PrivacyLevel = "everyone"
    privacy_group_invites: GroupInvitePrivacyLevel = "everyone"
    twofa_enabled: bool = False
    created_at: datetime
    updated_at: datetime


class UserProfileUpdate(BaseModel):
    name: str | None = Field(default=None, min_length=1, max_length=100)
    username: str | None = Field(default=None, min_length=3, max_length=50)
    bio: str | None = Field(default=None, max_length=500)
    avatar_url: str | None = Field(default=None, max_length=512)
    allow_private_messages: bool | None = None
    privacy_last_seen: PrivacyLevel | None = None
    privacy_avatar: PrivacyLevel | None = None
    privacy_group_invites: GroupInvitePrivacyLevel | None = None


class UserSearchRead(BaseModel):
    model_config = ConfigDict(from_attributes=True)

    id: int
    name: str
    username: str
    email: EmailStr
    avatar_url: str | None = None


class ContactByEmailRequest(BaseModel):
    email: EmailStr