"""add_qr_tracking_status_and_status_log

Revision ID: f1a414163bb3
Revises: c28fd63c44e0
Create Date: 2026-07-20 16:34:44.103631

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision: str = 'f1a414163bb3'
down_revision: Union[str, None] = 'c28fd63c44e0'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    # ### commands auto generated by Alembic - please adjust! ###
    op.create_table('chassis_status_log',
    sa.Column('log_id', sa.UUID(), nullable=False),
    sa.Column('chassis_id', sa.UUID(), nullable=False),
    sa.Column('from_status', sa.String(length=20), nullable=True),
    sa.Column('to_status', sa.String(length=20), nullable=False),
    sa.Column('changed_by', sa.UUID(), nullable=True),
    sa.Column('changed_at', sa.DateTime(timezone=True), nullable=False),
    sa.Column('scan_location', sa.String(length=30), nullable=True),
    sa.Column('remarks', sa.Text(), nullable=True),
    sa.ForeignKeyConstraint(['changed_by'], ['login_users.user_id'], ),
    sa.ForeignKeyConstraint(['chassis_id'], ['chassis_master.chassis_id'], ),
    sa.PrimaryKeyConstraint('log_id')
    )
    op.add_column('chassis_master', sa.Column('tracking_status', sa.String(length=20), server_default='CHASSIS_IN', nullable=False))
    # ### end Alembic commands ###


def downgrade() -> None:
    # ### commands auto generated by Alembic - please adjust! ###
    op.drop_column('chassis_master', 'tracking_status')
    op.drop_table('chassis_status_log')
    # ### end Alembic commands ###