"""Phase 7S.1C email notification preferences

Revision ID: 20260609_phase_7s1c_email_preferences
Revises: 20260608_phase_7s1_email_notifications
Create Date: 2026-06-09
"""

from __future__ import annotations

from alembic import op
import sqlalchemy as sa

revision = "20260609_phase_7s1c_email_preferences"
down_revision = "20260608_phase_7s1_email_notifications"
branch_labels = None
depends_on = None


_NEW_COLUMNS: list[tuple[str, sa.Column]] = [
    ("send_invoice_emails", sa.Column("send_invoice_emails", sa.Boolean(), nullable=False, server_default=sa.true())),
    ("send_payment_emails", sa.Column("send_payment_emails", sa.Boolean(), nullable=False, server_default=sa.true())),
    ("send_client_emails", sa.Column("send_client_emails", sa.Boolean(), nullable=False, server_default=sa.true())),
    ("send_document_emails", sa.Column("send_document_emails", sa.Boolean(), nullable=False, server_default=sa.true())),
    ("send_consultant_emails", sa.Column("send_consultant_emails", sa.Boolean(), nullable=False, server_default=sa.true())),
    ("send_partner_review_emails", sa.Column("send_partner_review_emails", sa.Boolean(), nullable=False, server_default=sa.true())),
    ("send_leave_attendance_emails", sa.Column("send_leave_attendance_emails", sa.Boolean(), nullable=False, server_default=sa.true())),
    ("send_online_payment_emails", sa.Column("send_online_payment_emails", sa.Boolean(), nullable=False, server_default=sa.true())),
]


def _existing_columns(table_name: str) -> set[str]:
    bind = op.get_bind()
    inspector = sa.inspect(bind)
    return {col["name"] for col in inspector.get_columns(table_name)}


def upgrade() -> None:
    existing = _existing_columns("email_settings")
    with op.batch_alter_table("email_settings") as batch_op:
        for name, column in _NEW_COLUMNS:
            if name not in existing:
                batch_op.add_column(column)


def downgrade() -> None:
    existing = _existing_columns("email_settings")
    with op.batch_alter_table("email_settings") as batch_op:
        for name, _column in reversed(_NEW_COLUMNS):
            if name in existing:
                batch_op.drop_column(name)