"""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")