A R R R Associates
56 lines
2.6 KiB
Python
56 lines
2.6 KiB
Python
"""Phase 7R.2 GST invoice format
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Revision ID: 20260602_phase_7r2_gst_invoice
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Revises: 20260601_phase_7r1_billing_settings
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Create Date: 2026-06-02
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Adds GST invoice snapshot fields, place of supply, reverse charge,
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SAC code per line and amount-in-words support. The migration is
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idempotent for the existing SQLite development workflow.
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"""
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from __future__ import annotations
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from alembic import op
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import sqlalchemy as sa
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revision = "20260602_phase_7r2_gst_invoice"
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down_revision = "20260601_phase_7r1_billing_settings"
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branch_labels = None
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depends_on = None
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def _columns(table_name: str) -> set[str]:
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bind = op.get_bind()
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inspector = sa.inspect(bind)
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if table_name not in inspector.get_table_names():
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return set()
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return {c["name"] for c in inspector.get_columns(table_name)}
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def _add_if_missing(table: str, column: sa.Column) -> None:
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if column.name not in _columns(table):
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op.add_column(table, column)
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def upgrade() -> None:
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_add_if_missing("billing_invoices", sa.Column("invoice_title", sa.String(length=80), nullable=True))
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_add_if_missing("billing_invoices", sa.Column("place_of_supply", sa.String(length=120), nullable=True))
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_add_if_missing("billing_invoices", sa.Column("reverse_charge", sa.Boolean(), nullable=False, server_default=sa.false()))
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_add_if_missing("billing_invoices", sa.Column("client_legal_name", sa.String(length=200), nullable=True))
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_add_if_missing("billing_invoices", sa.Column("client_trade_name", sa.String(length=200), nullable=True))
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_add_if_missing("billing_invoices", sa.Column("client_gstin", sa.String(length=20), nullable=True))
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_add_if_missing("billing_invoices", sa.Column("client_pan", sa.String(length=20), nullable=True))
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_add_if_missing("billing_invoices", sa.Column("client_billing_address", sa.Text(), nullable=True))
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_add_if_missing("billing_invoices", sa.Column("client_state", sa.String(length=100), nullable=True))
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_add_if_missing("billing_invoices", sa.Column("client_state_code", sa.String(length=2), nullable=True))
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_add_if_missing("billing_invoices", sa.Column("client_email", sa.String(length=255), nullable=True))
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_add_if_missing("billing_invoices", sa.Column("client_mobile", sa.String(length=50), nullable=True))
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_add_if_missing("billing_invoices", sa.Column("amount_in_words", sa.String(length=500), nullable=True))
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_add_if_missing("billing_invoice_lines", sa.Column("sac_code", sa.String(length=20), nullable=True))
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def downgrade() -> None:
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# No-op downgrade for SQLite/dev safety. Dropping columns in SQLite can
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# require table rebuild and may damage existing billing records.
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pass
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