75 lines
3.7 KiB
Python
75 lines
3.7 KiB
Python
"""departments, per-department categories and budgets, approval workflows
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Existing data is kept: everything created with version 1 is moved into a department called "IT".
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Revision ID: 0002
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Revises: 0001
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"""
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import sqlalchemy as sa
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from alembic import op
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revision = "0002"
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down_revision = "0001"
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branch_labels = None
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depends_on = None
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def _drop_unique_on(table: str, columns: list[str]) -> None:
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insp = sa.inspect(op.get_bind())
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for uc in insp.get_unique_constraints(table):
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if uc["column_names"] == columns:
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op.drop_constraint(uc["name"], table, type_="unique")
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def upgrade() -> None:
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op.create_table(
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"departments",
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sa.Column("id", sa.Integer(), primary_key=True),
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sa.Column("name", sa.String(length=120), nullable=False, unique=True),
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sa.Column("active", sa.Boolean(), nullable=False, server_default=sa.true()),
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sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
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)
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op.create_table(
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"workflow_steps",
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sa.Column("id", sa.Integer(), primary_key=True),
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sa.Column("department_id", sa.Integer(), sa.ForeignKey("departments.id", ondelete="CASCADE"), nullable=False),
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sa.Column("position", sa.Integer(), nullable=False, server_default="0"),
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sa.Column("name", sa.String(length=120), nullable=False),
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sa.Column("approver_mode", sa.String(length=10), nullable=False, server_default="role"),
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sa.Column("approver_ids", sa.JSON(), nullable=True),
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)
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op.create_index("ix_workflow_steps_department_id", "workflow_steps", ["department_id"])
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op.add_column("users", sa.Column("department_id", sa.Integer(), nullable=True))
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op.add_column("categories", sa.Column("department_id", sa.Integer(), nullable=True))
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op.add_column("budget_years", sa.Column("department_id", sa.Integer(), nullable=True))
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op.add_column("budget_years", sa.Column("current_step", sa.Integer(), nullable=True))
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conn = op.get_bind()
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has_data = any(conn.execute(sa.text(f"SELECT 1 FROM {t} LIMIT 1")).first()
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for t in ("users", "categories", "budget_years"))
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if has_data:
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conn.execute(sa.text("INSERT INTO departments (name, active, created_at) VALUES ('IT', true, now())"))
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dept_id = conn.execute(sa.text("SELECT id FROM departments WHERE name = 'IT'")).scalar_one()
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for table in ("users", "categories", "budget_years"):
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conn.execute(sa.text(f"UPDATE {table} SET department_id = :d"), {"d": dept_id})
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conn.execute(sa.text("UPDATE budget_years SET current_step = 0 WHERE status = 'in_review'"))
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op.alter_column("categories", "department_id", nullable=False)
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op.alter_column("budget_years", "department_id", nullable=False)
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op.create_foreign_key("fk_users_department", "users", "departments", ["department_id"], ["id"])
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op.create_foreign_key("fk_categories_department", "categories", "departments", ["department_id"], ["id"],
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ondelete="CASCADE")
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op.create_foreign_key("fk_budget_years_department", "budget_years", "departments", ["department_id"], ["id"])
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op.create_index("ix_categories_department_id", "categories", ["department_id"])
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op.create_index("ix_budget_years_department_id", "budget_years", ["department_id"])
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_drop_unique_on("categories", ["name_en"])
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_drop_unique_on("budget_years", ["year"])
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op.create_unique_constraint("uq_categories_department_name", "categories", ["department_id", "name_en"])
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op.create_unique_constraint("uq_budget_years_department_year", "budget_years", ["department_id", "year"])
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def downgrade() -> None:
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raise NotImplementedError("Restore a backup taken before the upgrade instead.")
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