"""
SC 13D / 13G Activist Ownership Events model
"""

from datetime import datetime, timezone
import uuid

from sqlalchemy import Column, String, Float, Boolean, Index, Text, UniqueConstraint
from sqlalchemy.dialects.postgresql import UUID, TIMESTAMP

from app.core.database import Base


class ActivistOwnershipEvent(Base):
    __tablename__ = "activist_ownership_events"

    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    symbol = Column(String(10), nullable=False)
    issuer_cik = Column(String(20), nullable=False)
    filer_cik = Column(String(20), nullable=False)
    filer_name = Column(String(500), nullable=False)
    accession_number = Column(String(30), nullable=False)
    form_type = Column(String(20), nullable=False)  # SC 13D, SC 13G, SC 13D/A, SC 13G/A
    filing_date = Column(TIMESTAMP(timezone=True), nullable=False)
    is_amendment = Column(Boolean, nullable=False, default=False)
    ownership_pct = Column(Float, nullable=True)
    shares_owned = Column(Float, nullable=True)
    change_pct = Column(Float, nullable=True)
    # index_only | parsed | parse_failed
    parse_status = Column(String(20), nullable=False, default="index_only")
    filing_url = Column(Text, nullable=True)

    created_at = Column(
        TIMESTAMP(timezone=True), default=lambda: datetime.now(timezone.utc)
    )
    updated_at = Column(
        TIMESTAMP(timezone=True),
        default=lambda: datetime.now(timezone.utc),
        onupdate=lambda: datetime.now(timezone.utc),
    )

    __table_args__ = (
        UniqueConstraint(
            "accession_number", "filer_cik",
            name="uq_activist_event",
        ),
        Index("idx_activist_sym_date", "symbol", "filing_date"),
        Index("idx_activist_filer_issuer", "filer_cik", "issuer_cik", "filing_date"),
        Index("idx_activist_filing_date", "filing_date"),
    )