"""Pydantic schemas for API requests and responses."""

from datetime import datetime
from typing import Optional

from pydantic import BaseModel, EmailStr, Field

from app.domain.models import AssetStatus, AssetType


# Auth schemas
class UserRegister(BaseModel):
    """User registration request."""

    email: EmailStr
    password: str = Field(min_length=8, max_length=100)


class UserLogin(BaseModel):
    """User login request."""

    email: EmailStr
    password: str


class Token(BaseModel):
    """JWT token response."""

    access_token: str
    refresh_token: str
    token_type: str = "bearer"


class UserResponse(BaseModel):
    """User information response."""

    id: str
    email: str
    is_active: bool
    created_at: datetime

    model_config = {"from_attributes": True}


# Asset schemas
class AssetResponse(BaseModel):
    """Asset information response."""

    id: str
    user_id: str
    type: AssetType
    status: AssetStatus
    original_filename: str
    content_type: str
    size_bytes: int
    sha256: Optional[str] = None
    captured_at: Optional[datetime] = None
    width: Optional[int] = None
    height: Optional[int] = None
    duration_sec: Optional[float] = None
    storage_key_original: str
    storage_key_thumb: Optional[str] = None
    created_at: datetime
    deleted_at: Optional[datetime] = None

    model_config = {"from_attributes": True}


class AssetListResponse(BaseModel):
    """Paginated list of assets."""

    items: list[AssetResponse]
    next_cursor: Optional[str] = None
    has_more: bool


class CreateUploadRequest(BaseModel):
    """Request to create an upload."""

    original_filename: str = Field(max_length=512)
    content_type: str = Field(max_length=100)
    size_bytes: int = Field(gt=0, le=21474836480)  # Max 20GB


class CreateUploadResponse(BaseModel):
    """Response with upload credentials."""

    asset_id: str
    upload_url: str
    upload_method: str = "presigned_post"
    fields: Optional[dict] = None


class FinalizeUploadRequest(BaseModel):
    """Request to finalize an upload."""

    etag: Optional[str] = None
    sha256: Optional[str] = Field(None, max_length=64)


# Download URLs
class DownloadUrlResponse(BaseModel):
    """Pre-signed download URL."""

    url: str
    expires_in: int


# Share schemas
class CreateShareRequest(BaseModel):
    """Request to create a share link."""

    asset_id: Optional[str] = None
    album_id: Optional[str] = None
    expires_in_seconds: Optional[int] = Field(None, gt=0)
    password: Optional[str] = Field(None, min_length=6, max_length=100)


class ShareResponse(BaseModel):
    """Share link information."""

    id: str
    owner_user_id: str
    asset_id: Optional[str] = None
    album_id: Optional[str] = None
    token: str
    expires_at: Optional[datetime] = None
    created_at: datetime
    revoked_at: Optional[datetime] = None

    model_config = {"from_attributes": True}


class ShareAccessRequest(BaseModel):
    """Request to access a shared resource."""

    password: Optional[str] = None


class ShareWithAssetResponse(BaseModel):
    """Share with asset information."""

    share: ShareResponse
    asset: Optional[AssetResponse] = None


# Error response
class ErrorResponse(BaseModel):
    """Standard error response."""

    error: dict[str, str | dict]