"""Authentication schemas."""

from datetime import datetime
from typing import Any

from pydantic import BaseModel, EmailStr, Field


class UserRegisterRequest(BaseModel):
    """Schema for user registration request."""

    email: EmailStr = Field(..., description="User email address")
    password: str = Field(
        ...,
        min_length=8,
        description="User password (minimum 8 characters)",
    )
    name: str = Field(..., min_length=1, max_length=100, description="User full name")


class UserLoginRequest(BaseModel):
    """Schema for user login request."""

    email: EmailStr = Field(..., description="User email address")
    password: str = Field(..., description="User password")


class TokenResponse(BaseModel):
    """Schema for authentication token response."""

    access_token: str = Field(..., description="JWT access token")
    token_type: str = Field(default="bearer", description="Token type")
    expires_in: int = Field(..., description="Token expiration time in seconds")


class UserResponse(BaseModel):
    """Schema for user information response."""

    id: int = Field(..., description="User ID")
    email: str = Field(..., description="User email address")
    name: str = Field(..., description="User full name")
    picture: str | None = Field(None, description="User profile picture URL")
    role: str = Field(..., description="User role")
    credits: int = Field(..., description="User credits")
    is_active: bool = Field(..., description="Whether user is active")
    plan: dict[str, Any] = Field(..., description="User plan information")
    created_at: datetime = Field(..., description="User creation timestamp")
    updated_at: datetime = Field(..., description="User last update timestamp")


class AuthResponse(BaseModel):
    """Schema for authentication response."""

    user: UserResponse = Field(..., description="User information")
    token: TokenResponse = Field(..., description="Authentication token")


class ApiTokenRequest(BaseModel):
    """Schema for API token generation request."""

    expires_days: int = Field(
        default=365,
        ge=1,
        le=3650,
        description="Number of days until token expires (1-3650 days)",
    )


class ApiTokenResponse(BaseModel):
    """Schema for API token response."""

    api_token: str = Field(..., description="Generated API token")
    expires_at: datetime | None = Field(None, description="Token expiration timestamp")


class ApiTokenStatusResponse(BaseModel):
    """Schema for API token status response."""

    has_token: bool = Field(..., description="Whether user has an active API token")
    expires_at: datetime | None = Field(None, description="Token expiration timestamp")
    is_expired: bool = Field(..., description="Whether the token is expired")


class ChangePasswordRequest(BaseModel):
    """Schema for password change request."""

    current_password: str | None = Field(None, description="Current password (required if user has existing password)")
    new_password: str = Field(
        ...,
        min_length=8,
        description="New password (minimum 8 characters)",
    )


class UpdateProfileRequest(BaseModel):
    """Schema for profile update request."""

    name: str | None = Field(
        None, min_length=1, max_length=100, description="User display name"
    )