import uuid
from datetime import datetime
from sqlalchemy import String, Integer, Float, Boolean, DateTime, Text, ForeignKey
from sqlalchemy.orm import Mapped, mapped_column
from sqlalchemy.dialects.sqlite import JSON
from ..database import Base


class LibraryItem(Base):
    __tablename__ = "library_items"

    id: Mapped[str] = mapped_column(String(36), primary_key=True, default=lambda: str(uuid.uuid4()))
    library_id: Mapped[str] = mapped_column(String(36), ForeignKey("libraries.id", ondelete="CASCADE"), nullable=False)
    media_type: Mapped[str] = mapped_column(String(20), default="book")  # "book" / "podcast"
    path: Mapped[str] = mapped_column(Text, nullable=False)
    ino: Mapped[str | None] = mapped_column(String(100), nullable=True)  # ABS inode-Feld

    # Metadaten
    title: Mapped[str | None] = mapped_column(String(500), nullable=True)
    subtitle: Mapped[str | None] = mapped_column(String(500), nullable=True)
    author: Mapped[str | None] = mapped_column(String(500), nullable=True)
    narrator: Mapped[str | None] = mapped_column(String(500), nullable=True)
    publisher: Mapped[str | None] = mapped_column(String(255), nullable=True)
    publish_year: Mapped[int | None] = mapped_column(Integer, nullable=True)
    series: Mapped[str | None] = mapped_column(String(500), nullable=True)
    series_sequence: Mapped[str | None] = mapped_column(String(50), nullable=True)
    description: Mapped[str | None] = mapped_column(Text, nullable=True)
    cover_path: Mapped[str | None] = mapped_column(Text, nullable=True)
    language: Mapped[str | None] = mapped_column(String(10), nullable=True)
    genres: Mapped[list] = mapped_column(JSON, default=list)
    tags: Mapped[list] = mapped_column(JSON, default=list)
    explicit: Mapped[bool] = mapped_column(Boolean, default=False)
    abridged: Mapped[bool] = mapped_column(Boolean, default=False)

    # Datei-Infos
    duration_seconds: Mapped[float] = mapped_column(Float, default=0.0)
    size_bytes: Mapped[int] = mapped_column(Integer, default=0)
    num_files: Mapped[int] = mapped_column(Integer, default=0)

    # Matching
    matched_source: Mapped[str] = mapped_column(String(50), default="none")
    matched_id: Mapped[str | None] = mapped_column(String(255), nullable=True)
    match_confidence: Mapped[float] = mapped_column(Float, default=0.0)
    match_locked: Mapped[bool] = mapped_column(Boolean, default=False)

    # Status
    is_missing: Mapped[bool] = mapped_column(Boolean, default=False)
    is_invalid: Mapped[bool] = mapped_column(Boolean, default=False)

    added_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow)
    updated_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)


class BookFile(Base):
    __tablename__ = "book_files"

    id: Mapped[str] = mapped_column(String(36), primary_key=True, default=lambda: str(uuid.uuid4()))
    library_item_id: Mapped[str] = mapped_column(String(36), ForeignKey("library_items.id", ondelete="CASCADE"), nullable=False)
    filename: Mapped[str] = mapped_column(String(500), nullable=False)
    path: Mapped[str] = mapped_column(Text, nullable=False)
    format: Mapped[str] = mapped_column(String(10), nullable=False)  # mp3 / wav
    size_bytes: Mapped[int] = mapped_column(Integer, default=0)
    duration_seconds: Mapped[float] = mapped_column(Float, default=0.0)
    track_index: Mapped[int] = mapped_column(Integer, default=0)
    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow)


class Chapter(Base):
    __tablename__ = "chapters"

    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
    library_item_id: Mapped[str] = mapped_column(String(36), ForeignKey("library_items.id", ondelete="CASCADE"), nullable=False)
    chapter_index: Mapped[int] = mapped_column(Integer, nullable=False)
    title: Mapped[str] = mapped_column(String(500), nullable=False)
    start_seconds: Mapped[float] = mapped_column(Float, default=0.0)
    end_seconds: Mapped[float] = mapped_column(Float, default=0.0)