"""Domain models for the application."""

import enum
from datetime import datetime
from typing import Optional
from uuid import uuid4

from sqlalchemy import BigInteger, Boolean, DateTime, Enum, Float, Integer, String, Text, func
from sqlalchemy.orm import Mapped, mapped_column

from app.infra.database import Base


def generate_uuid() -> str:
    """Generate UUID as string for SQLite compatibility."""
    return str(uuid4())


class AssetType(str, enum.Enum):
    """Type of media asset."""

    PHOTO = "photo"
    VIDEO = "video"


class AssetStatus(str, enum.Enum):
    """Status of media asset."""

    UPLOADING = "uploading"
    READY = "ready"
    FAILED = "failed"


class User(Base):
    """User account."""

    __tablename__ = "users"

    id: Mapped[str] = mapped_column(String(36), primary_key=True, default=generate_uuid)
    email: Mapped[str] = mapped_column(String(255), unique=True, nullable=False, index=True)
    password_hash: Mapped[str] = mapped_column(String(255), nullable=False)
    is_active: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False)
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), server_default=func.now(), nullable=False
    )
    updated_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), server_default=func.now(), onupdate=func.now(), nullable=False
    )


class Folder(Base):
    """Folder for organizing assets."""

    __tablename__ = "folders"

    id: Mapped[str] = mapped_column(String(36), primary_key=True, default=generate_uuid)
    user_id: Mapped[str] = mapped_column(String(36), nullable=False, index=True)
    name: Mapped[str] = mapped_column(String(255), nullable=False)
    parent_folder_id: Mapped[Optional[str]] = mapped_column(
        String(36), nullable=True, index=True
    )
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), server_default=func.now(), nullable=False
    )


class Asset(Base):
    """Media asset (photo or video)."""

    __tablename__ = "assets"

    id: Mapped[str] = mapped_column(String(36), primary_key=True, default=generate_uuid)
    user_id: Mapped[str] = mapped_column(String(36), nullable=False, index=True)
    folder_id: Mapped[Optional[str]] = mapped_column(String(36), nullable=True, index=True)
    type: Mapped[AssetType] = mapped_column(Enum(AssetType), nullable=False)
    status: Mapped[AssetStatus] = mapped_column(
        Enum(AssetStatus), default=AssetStatus.UPLOADING, nullable=False, index=True
    )
    original_filename: Mapped[str] = mapped_column(String(512), nullable=False)
    content_type: Mapped[str] = mapped_column(String(100), nullable=False)
    size_bytes: Mapped[int] = mapped_column(BigInteger, nullable=False)
    sha256: Mapped[Optional[str]] = mapped_column(String(64), nullable=True)

    # Metadata
    captured_at: Mapped[Optional[datetime]] = mapped_column(DateTime(timezone=True), nullable=True)
    width: Mapped[Optional[int]] = mapped_column(Integer, nullable=True)
    height: Mapped[Optional[int]] = mapped_column(Integer, nullable=True)
    duration_sec: Mapped[Optional[float]] = mapped_column(Float, nullable=True)

    # Storage
    storage_key_original: Mapped[str] = mapped_column(String(512), nullable=False)
    storage_key_thumb: Mapped[Optional[str]] = mapped_column(String(512), nullable=True)

    # Timestamps
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), server_default=func.now(), nullable=False, index=True
    )


class Share(Base):
    """Public share link for assets or albums."""

    __tablename__ = "shares"

    id: Mapped[str] = mapped_column(String(36), primary_key=True, default=generate_uuid)
    owner_user_id: Mapped[str] = mapped_column(String(36), nullable=False, index=True)
    asset_id: Mapped[Optional[str]] = mapped_column(String(36), nullable=True, index=True)
    album_id: Mapped[Optional[str]] = mapped_column(String(36), nullable=True, index=True)

    token: Mapped[str] = mapped_column(String(64), unique=True, nullable=False, index=True)
    expires_at: Mapped[Optional[datetime]] = mapped_column(DateTime(timezone=True), nullable=True)
    password_hash: Mapped[Optional[str]] = mapped_column(String(255), nullable=True)

    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), server_default=func.now(), nullable=False
    )
    revoked_at: Mapped[Optional[datetime]] = mapped_column(
        DateTime(timezone=True), nullable=True, index=True
    )