"""
Migrazione 0010: tabella message_templates (Feature 1 – Template messaggi).
"""

from alembic import op
import sqlalchemy as sa
from sqlalchemy.dialects import postgresql

revision = "0010"
down_revision = "0009"
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.create_table(
        "message_templates",
        sa.Column("id", postgresql.UUID(as_uuid=True), primary_key=True),
        sa.Column(
            "tenant_id",
            postgresql.UUID(as_uuid=True),
            sa.ForeignKey("tenants.id", ondelete="CASCADE"),
            nullable=False,
        ),
        sa.Column("name", sa.String(255), nullable=False),
        sa.Column("description", sa.Text, nullable=True),
        sa.Column("subject", sa.Text, nullable=False, server_default=""),
        sa.Column("body_text", sa.Text, nullable=True),
        sa.Column("body_html", sa.Text, nullable=True),
        sa.Column(
            "created_by",
            postgresql.UUID(as_uuid=True),
            sa.ForeignKey("users.id", ondelete="SET NULL"),
            nullable=True,
        ),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            nullable=False,
            server_default=sa.func.now(),
        ),
        sa.Column(
            "updated_at",
            sa.DateTime(timezone=True),
            nullable=False,
            server_default=sa.func.now(),
        ),
        sa.UniqueConstraint("tenant_id", "name", name="uq_template_name_tenant"),
    )
    op.create_index("idx_templates_tenant", "message_templates", ["tenant_id"])


def downgrade() -> None:
    op.drop_index("idx_templates_tenant", table_name="message_templates")
    op.drop_table("message_templates")