Add versioned Client FY Accounting Mirrors

2026-09-19 12:19:33 +05:30
parent f20b79ff70
commit f6776cc96a
11 changed files with 457 additions and 198 deletions
@@ -0,0 +1,72 @@
+"""Version Accounting Mirrors per Client + Financial Year.
+
+Revision ID: 20260918_accounting_mirror_ver
+Revises: 20260918_accounting_mirror_reg
+"""
+from alembic import op
+import sqlalchemy as sa
+
+revision = "20260918_accounting_mirror_ver"
+down_revision = "20260918_accounting_mirror_reg"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    bind = op.get_bind()
+    inspector = sa.inspect(bind)
+    columns = {c["name"] for c in inspector.get_columns("accounting_mirror_registry")}
+
+    if "version_no" not in columns:
+        op.add_column("accounting_mirror_registry", sa.Column("version_no", sa.Integer(), nullable=False, server_default="1"))
+    if "is_current" not in columns:
+        op.add_column("accounting_mirror_registry", sa.Column("is_current", sa.Boolean(), nullable=False, server_default=sa.true()))
+    if "supersedes_mirror_id" not in columns:
+        op.add_column("accounting_mirror_registry", sa.Column("supersedes_mirror_id", sa.Integer(), nullable=True))
+        op.create_foreign_key(
+            "fk_accounting_mirror_registry_supersedes",
+            "accounting_mirror_registry",
+            "accounting_mirror_registry",
+            ["supersedes_mirror_id"],
+            ["id"],
+            ondelete="SET NULL",
+        )
+
+    uniques = {u.get("name") for u in inspector.get_unique_constraints("accounting_mirror_registry")}
+    if "uq_accounting_mirror_registry_client_fy" in uniques:
+        op.drop_constraint("uq_accounting_mirror_registry_client_fy", "accounting_mirror_registry", type_="unique")
+    if "uq_accounting_mirror_registry_client_fy_version" not in uniques:
+        op.create_unique_constraint(
+            "uq_accounting_mirror_registry_client_fy_version",
+            "accounting_mirror_registry",
+            ["tenant_id", "client_id", "financial_year", "version_no"],
+        )
+
+    indexes = {i.get("name") for i in inspector.get_indexes("accounting_mirror_registry")}
+    if "ix_accounting_mirror_registry_version_no" not in indexes:
+        op.create_index("ix_accounting_mirror_registry_version_no", "accounting_mirror_registry", ["version_no"], unique=False)
+    if "ix_accounting_mirror_registry_is_current" not in indexes:
+        op.create_index("ix_accounting_mirror_registry_is_current", "accounting_mirror_registry", ["is_current"], unique=False)
+    if "ix_accounting_mirror_registry_supersedes_mirror_id" not in indexes:
+        op.create_index("ix_accounting_mirror_registry_supersedes_mirror_id", "accounting_mirror_registry", ["supersedes_mirror_id"], unique=False)
+
+    # Existing registry rows become version 1/current without touching their
+    # file path, company metadata, dates or status.
+    op.execute(sa.text("UPDATE accounting_mirror_registry SET version_no = 1 WHERE version_no IS NULL"))
+    op.execute(sa.text("UPDATE accounting_mirror_registry SET is_current = TRUE WHERE is_current IS NULL"))
+
+
+def downgrade() -> None:
+    op.drop_index("ix_accounting_mirror_registry_supersedes_mirror_id", table_name="accounting_mirror_registry")
+    op.drop_index("ix_accounting_mirror_registry_is_current", table_name="accounting_mirror_registry")
+    op.drop_index("ix_accounting_mirror_registry_version_no", table_name="accounting_mirror_registry")
+    op.drop_constraint("uq_accounting_mirror_registry_client_fy_version", "accounting_mirror_registry", type_="unique")
+    op.create_unique_constraint(
+        "uq_accounting_mirror_registry_client_fy",
+        "accounting_mirror_registry",
+        ["tenant_id", "client_id", "financial_year"],
+    )
+    op.drop_constraint("fk_accounting_mirror_registry_supersedes", "accounting_mirror_registry", type_="foreignkey")
+    op.drop_column("accounting_mirror_registry", "supersedes_mirror_id")
+    op.drop_column("accounting_mirror_registry", "is_current")
+    op.drop_column("accounting_mirror_registry", "version_no")