"""add device_daily_snapshots table

Revision ID: e5f6a7b8c9d0
Revises: d4e5f6a7b8c9
Create Date: 2026-04-05

"""
from alembic import op
import sqlalchemy as sa

revision = 'e5f6a7b8c9d0'
down_revision = 'd4e5f6a7b8c9'
branch_labels = None
depends_on = None


def upgrade():
    op.create_table(
        'device_daily_snapshots',
        sa.Column('id', sa.BigInteger(), primary_key=True, index=True),
        sa.Column('snapshot_date', sa.String(10), nullable=False),
        sa.Column('total', sa.Integer(), nullable=False, server_default='0'),
        sa.Column('online', sa.Integer(), nullable=False, server_default='0'),
        sa.Column('offline', sa.Integer(), nullable=False, server_default='0'),
        sa.Column('created_at', sa.TIMESTAMP(), server_default=sa.text('now()')),
    )
    op.create_index('ix_device_daily_snapshots_snapshot_date', 'device_daily_snapshots', ['snapshot_date'])


def downgrade():
    op.drop_index('ix_device_daily_snapshots_snapshot_date', 'device_daily_snapshots')
    op.drop_table('device_daily_snapshots')