import uuid
from datetime import datetime

from sqlalchemy import Boolean, CheckConstraint, DateTime, ForeignKey, String, Text, func
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.core.actors import ActorType
from app.models.base import Base, GUID


class Signalement(Base):
    __tablename__ = "signalements"
    __table_args__ = (
        CheckConstraint(
            "(actor_type = 'AUTH_USER' AND actor_guest_id IS NULL) "
            "OR (actor_type = 'GUEST' AND actor_user_id IS NULL AND actor_guest_id IS NOT NULL)",
            name="ck_signalements_actor_consistency",
        ),
    )

    id: Mapped[uuid.UUID] = mapped_column(GUID, primary_key=True, default=uuid.uuid4)
    reference: Mapped[str] = mapped_column(String(50), unique=True, nullable=False, index=True)
    titre: Mapped[str] = mapped_column(String(255), nullable=False)
    description: Mapped[str] = mapped_column(Text, nullable=False)
    type: Mapped[str] = mapped_column(String(50), nullable=False)
    # Possible values: HARCELEMENT_MORAL, HARCELEMENT_SEXUEL, VBG, DISCRIMINATION, VIOLENCE, AUTRE

    statut: Mapped[str] = mapped_column(String(20), default="NOUVEAU", nullable=False, index=True)
    # Possible values: NOUVEAU, ASSIGNE, EN_COURS, EN_ATTENTE, TRAITE, CLOTURE

    est_traite: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False)
    mode_identification: Mapped[str] = mapped_column(
        String(20), default="ANONYME", nullable=False
    )
    # Possible values: ANONYME, NOMINATIF

    date_incident: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
    lieu_incident: Mapped[str | None] = mapped_column(String(300), nullable=True)
    auteur_presume: Mapped[str | None] = mapped_column(String(255), nullable=True)
    a_temoins: Mapped[bool | None] = mapped_column(Boolean, nullable=True)
    description_temoins: Mapped[str | None] = mapped_column(Text, nullable=True)
    priorite: Mapped[str | None] = mapped_column(String(20), nullable=True)

    actor_type: Mapped[str] = mapped_column(
        String(20),
        nullable=False,
        default=ActorType.AUTH_USER.value,
        index=True,
    )
    actor_user_id: Mapped[uuid.UUID | None] = mapped_column(
        GUID,
        ForeignKey("utilisateurs.id", ondelete="SET NULL"),
        nullable=True,
        index=True,
    )
    actor_guest_id: Mapped[uuid.UUID | None] = mapped_column(
        GUID,
        ForeignKey("guest_sessions.id", ondelete="SET NULL"),
        nullable=True,
        index=True,
    )

    utilisateur_id: Mapped[uuid.UUID] = mapped_column(
        GUID,
        ForeignKey("utilisateurs.id", ondelete="SET NULL"),
        nullable=True,
        index=True,
    )
    gestionnaire_id: Mapped[uuid.UUID | None] = mapped_column(
        GUID,
        ForeignKey("utilisateurs.id", ondelete="SET NULL"),
        nullable=True,
        index=True,
    )
    bureau_genre_id: Mapped[str | None] = mapped_column(String(100), nullable=True)

    date_creation: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), server_default=func.now(), nullable=False, index=True
    )
    date_modification: Mapped[datetime | None] = mapped_column(
        DateTime(timezone=True), onupdate=func.now(), nullable=True
    )
    date_traitement: Mapped[datetime | None] = mapped_column(
        DateTime(timezone=True), nullable=True
    )
    date_assignation: Mapped[datetime | None] = mapped_column(
        DateTime(timezone=True), nullable=True
    )

    # Relationships
    utilisateur: Mapped["Utilisateur | None"] = relationship(
        "Utilisateur", foreign_keys=[utilisateur_id], back_populates="signalements_soumis"
    )
    actor_user: Mapped["Utilisateur | None"] = relationship("Utilisateur", foreign_keys=[actor_user_id])
    actor_guest: Mapped["GuestSession | None"] = relationship("GuestSession")
    gestionnaire: Mapped["Utilisateur | None"] = relationship(
        "Utilisateur", foreign_keys=[gestionnaire_id], back_populates="signalements_assignes"
    )
    timeline: Mapped[list["SignalementTimeline"]] = relationship(
        "SignalementTimeline", back_populates="signalement", cascade="all, delete-orphan"
    )
    pieces_jointes: Mapped[list["SignalementPieceJointe"]] = relationship(
        "SignalementPieceJointe", back_populates="signalement", cascade="all, delete-orphan"
    )
    notes_internes: Mapped[list["NoteInterne"]] = relationship(
        "NoteInterne", back_populates="signalement", cascade="all, delete-orphan"
    )
    discussions: Mapped[list["Discussion"]] = relationship(
        "Discussion", back_populates="signalement"
    )


from app.models.utilisateur import Utilisateur  # noqa: E402, F401
from app.models.signalement_timeline import SignalementTimeline  # noqa: E402, F401
from app.models.signalement_piece_jointe import SignalementPieceJointe  # noqa: E402, F401
from app.models.note_interne import NoteInterne  # noqa: E402, F401
from app.models.discussion import Discussion  # noqa: E402, F401
from app.models.guest_session import GuestSession  # noqa: E402, F401