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zpark-ems/backend/alembic/versions/006_pricing_tables.py
Du Wenbo 026c837b91 Squashed 'core/' content from commit 92ec910
git-subtree-dir: core
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Python

"""Add pricing tables
Revision ID: 006_pricing
Revises: 005_quota
Create Date: 2026-04-03
"""
from alembic import op
import sqlalchemy as sa
revision = "006_pricing"
down_revision = "005_quota"
branch_labels = None
depends_on = None
def upgrade() -> None:
# --- electricity_pricing ---
op.create_table(
"electricity_pricing",
sa.Column("id", sa.Integer, primary_key=True, autoincrement=True),
sa.Column("name", sa.String(200), nullable=False),
sa.Column("energy_type", sa.String(50), default="electricity"),
sa.Column("pricing_type", sa.String(20), nullable=False),
sa.Column("effective_from", sa.DateTime(timezone=True)),
sa.Column("effective_to", sa.DateTime(timezone=True)),
sa.Column("is_active", sa.Boolean, default=True),
sa.Column("created_by", sa.Integer, sa.ForeignKey("users.id")),
sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.func.now()),
sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.func.now()),
)
# --- pricing_periods ---
op.create_table(
"pricing_periods",
sa.Column("id", sa.Integer, primary_key=True, autoincrement=True),
sa.Column("pricing_id", sa.Integer, sa.ForeignKey("electricity_pricing.id"), nullable=False),
sa.Column("period_name", sa.String(50), nullable=False),
sa.Column("start_time", sa.String(10), nullable=False),
sa.Column("end_time", sa.String(10), nullable=False),
sa.Column("price_per_unit", sa.Float, nullable=False),
sa.Column("applicable_months", sa.JSON),
sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.func.now()),
)
def downgrade() -> None:
op.drop_table("pricing_periods")
op.drop_table("electricity_pricing")