"""Fondations centre documentaire et planning interne des salles."""
from alembic import op
import sqlalchemy as sa


revision = "g1a2b3c4d5e6"
down_revision = "9f4a1b2c3d5e"
branch_labels = None
depends_on = None


def _column_names(table):
    bind = op.get_bind()
    inspector = sa.inspect(bind)
    return {column["name"] for column in inspector.get_columns(table)}


def upgrade():
    if "document_type" not in _column_names("intervention_documents"):
        op.add_column(
            "intervention_documents",
            sa.Column("document_type", sa.String(30), nullable=False, server_default="autre"),
        )
        op.create_index("ix_intervention_documents_document_type", "intervention_documents", ["document_type"])
    if "document_type" not in _column_names("equipment_documents"):
        op.add_column(
            "equipment_documents",
            sa.Column("document_type", sa.String(30), nullable=False, server_default="autre"),
        )
        op.create_index("ix_equipment_documents_document_type", "equipment_documents", ["document_type"])

    room_columns = _column_names("room_schedules")
    additions = (
        ("source", sa.String(20), "manual"),
        ("external_id", sa.String(191), None),
        ("last_synced_at", sa.DateTime(), None),
        ("source_updated_at", sa.DateTime(), None),
        ("protected_from_sync", sa.Boolean(), False),
        ("resolution_status", sa.String(20), "active"),
        ("valid_from", sa.Date(), None),
        ("valid_to", sa.Date(), None),
        ("event_type", sa.String(30), "cours"),
        ("conflict_note", sa.Text(), None),
    )
    for name, column_type, default in additions:
        if name not in room_columns:
            kwargs = {"nullable": False} if name in {"source", "protected_from_sync", "resolution_status", "event_type"} else {"nullable": True}
            if default is not None:
                kwargs["server_default"] = sa.text("1" if default is True else "0" if default is False else repr(default))
            op.add_column("room_schedules", sa.Column(name, column_type, **kwargs))
    for name in ("source", "external_id", "protected_from_sync", "resolution_status"):
        index_name = f"ix_room_schedules_{name}"
        if index_name not in {i["name"] for i in sa.inspect(op.get_bind()).get_indexes("room_schedules")}:
            op.create_index(index_name, "room_schedules", [name])

    bind = op.get_bind()
    bind.execute(sa.text(
        """INSERT INTO permissions (code, name, module, action, description, is_active)
           SELECT 'documents.view', 'Consulter le centre documentaire', 'documents', 'view',
                  'Permet de rechercher et consulter les documents autorisés des interventions, équipements et produits.', 1
           WHERE NOT EXISTS (SELECT 1 FROM permissions WHERE code='documents.view')"""
    ))
    bind.execute(sa.text(
        """INSERT INTO role_permissions (role_id, permission_id, effect)
           SELECT r.id, p.id, 'allow'
           FROM roles r CROSS JOIN permissions p
           WHERE p.code='documents.view'
             AND r.slug IN ('admin','responsable_gmao','technicien','assistant_prevention','demandeur','lecture')
             AND NOT EXISTS (
                 SELECT 1 FROM role_permissions rp
                 WHERE rp.role_id=r.id AND rp.permission_id=p.id
             )"""
    ))


def downgrade():
    bind = op.get_bind()
    bind.execute(sa.text(
        """DELETE rp FROM role_permissions rp
           JOIN permissions p ON p.id=rp.permission_id
           WHERE p.code='documents.view'"""
    ))
    bind.execute(sa.text("DELETE FROM permissions WHERE code='documents.view'"))
    for name in ("source", "external_id", "last_synced_at", "source_updated_at", "protected_from_sync", "resolution_status", "valid_from", "valid_to", "event_type", "conflict_note"):
        if name in _column_names("room_schedules"):
            index_name = f"ix_room_schedules_{name}"
            if index_name in {i["name"] for i in sa.inspect(bind).get_indexes("room_schedules")}:
                op.drop_index(index_name, table_name="room_schedules")
            op.drop_column("room_schedules", name)
    if "document_type" in _column_names("equipment_documents"):
        op.drop_index("ix_equipment_documents_document_type", table_name="equipment_documents")
        op.drop_column("equipment_documents", "document_type")
    if "document_type" in _column_names("intervention_documents"):
        op.drop_index("ix_intervention_documents_document_type", table_name="intervention_documents")
        op.drop_column("intervention_documents", "document_type")