Squash alembic migrations into single baseline
This commit is contained in:
@@ -1,28 +1,29 @@
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"""baseline schema (no HR module)
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"""Baseline schema (squashed)
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Revision ID: bacd5e6a253d
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Revision ID: 0a1b2c3d4e5f
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Revises:
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Create Date: 2026-02-02 16:37:34.122971
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Create Date: 2026-02-02
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This is a squashed baseline migration for Mission Control.
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All prior incremental migrations were removed to keep the repo simple.
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"""
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from typing import Sequence, Union
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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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import sqlmodel
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from alembic import op
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# revision identifiers, used by Alembic.
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revision: str = "bacd5e6a253d"
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down_revision: Union[str, Sequence[str], None] = None
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branch_labels: Union[str, Sequence[str], None] = None
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depends_on: Union[str, Sequence[str], None] = None
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revision = "0a1b2c3d4e5f"
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down_revision = None
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branch_labels = None
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depends_on = None
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def upgrade() -> None:
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"""Upgrade schema."""
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# Departments (FK to employees added after employees table exists)
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op.create_table(
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"departments",
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@@ -40,6 +41,7 @@ def upgrade() -> None:
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sa.Column("name", sqlmodel.sql.sqltypes.AutoString(), nullable=False),
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sa.Column("employee_type", sqlmodel.sql.sqltypes.AutoString(), nullable=False),
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sa.Column("department_id", sa.Integer(), nullable=True),
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sa.Column("team_id", sa.Integer(), nullable=True),
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sa.Column("manager_id", sa.Integer(), nullable=True),
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sa.Column("title", sqlmodel.sql.sqltypes.AutoString(), nullable=True),
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sa.Column("status", sqlmodel.sql.sqltypes.AutoString(), nullable=False),
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@@ -53,15 +55,50 @@ def upgrade() -> None:
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# Break the departments<->employees cycle: add this FK after both tables exist
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op.create_foreign_key(None, "departments", "employees", ["head_employee_id"], ["id"])
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# Teams
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op.create_table(
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"teams",
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sa.Column("id", sa.Integer(), primary_key=True, nullable=False),
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sa.Column("name", sa.String(), nullable=False),
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sa.Column("department_id", sa.Integer(), nullable=False),
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sa.Column("lead_employee_id", sa.Integer(), nullable=True),
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sa.ForeignKeyConstraint(["department_id"], ["departments.id"], ondelete="CASCADE"),
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sa.ForeignKeyConstraint(["lead_employee_id"], ["employees.id"], ondelete="SET NULL"),
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sa.UniqueConstraint("department_id", "name", name="uq_teams_department_id_name"),
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)
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op.create_index("ix_teams_name", "teams", ["name"], unique=False)
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op.create_index("ix_teams_department_id", "teams", ["department_id"], unique=False)
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# Employees.team_id FK (added after teams exists)
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op.create_index("ix_employees_team_id", "employees", ["team_id"], unique=False)
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op.create_foreign_key(
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"fk_employees_team_id_teams",
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"employees",
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"teams",
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["team_id"],
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["id"],
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ondelete="SET NULL",
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)
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# Projects
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op.create_table(
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"projects",
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sa.Column("id", sa.Integer(), nullable=False),
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sa.Column("name", sqlmodel.sql.sqltypes.AutoString(), nullable=False),
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sa.Column("status", sqlmodel.sql.sqltypes.AutoString(), nullable=False),
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sa.Column("team_id", sa.Integer(), nullable=True),
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sa.PrimaryKeyConstraint("id"),
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)
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op.create_index(op.f("ix_projects_name"), "projects", ["name"], unique=True)
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op.create_index("ix_projects_team_id", "projects", ["team_id"], unique=False)
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op.create_foreign_key(
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"fk_projects_team_id_teams",
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"projects",
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"teams",
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["team_id"],
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["id"],
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ondelete="SET NULL",
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)
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# Activities
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op.create_table(
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@@ -129,8 +166,6 @@ def upgrade() -> None:
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def downgrade() -> None:
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"""Downgrade schema."""
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op.drop_index(op.f("ix_task_comments_task_id"), table_name="task_comments")
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op.drop_table("task_comments")
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@@ -142,9 +177,18 @@ def downgrade() -> None:
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op.drop_table("activities")
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op.drop_constraint("fk_projects_team_id_teams", "projects", type_="foreignkey")
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op.drop_index("ix_projects_team_id", table_name="projects")
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op.drop_index(op.f("ix_projects_name"), table_name="projects")
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op.drop_table("projects")
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op.drop_constraint("fk_employees_team_id_teams", "employees", type_="foreignkey")
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op.drop_index("ix_employees_team_id", table_name="employees")
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op.drop_index("ix_teams_department_id", table_name="teams")
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op.drop_index("ix_teams_name", table_name="teams")
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op.drop_table("teams")
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op.drop_table("employees")
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op.drop_index(op.f("ix_departments_name"), table_name="departments")
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@@ -1,73 +0,0 @@
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"""Add teams and team ownership
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Revision ID: 3f2c1b9c8e12
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Revises: bacd5e6a253d
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Create Date: 2026-02-02
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"""
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from __future__ import annotations
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import sqlalchemy as sa
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from alembic import op
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# revision identifiers, used by Alembic.
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revision = "3f2c1b9c8e12"
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down_revision = "bacd5e6a253d"
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branch_labels = None
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depends_on = None
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def upgrade() -> None:
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# 1) Teams
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op.create_table(
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"teams",
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sa.Column("id", sa.Integer(), primary_key=True, nullable=False),
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sa.Column("name", sa.String(), nullable=False),
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sa.Column("department_id", sa.Integer(), nullable=False),
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sa.Column("lead_employee_id", sa.Integer(), nullable=True),
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sa.ForeignKeyConstraint(["department_id"], ["departments.id"], ondelete="CASCADE"),
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sa.ForeignKeyConstraint(["lead_employee_id"], ["employees.id"], ondelete="SET NULL"),
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sa.UniqueConstraint("department_id", "name", name="uq_teams_department_id_name"),
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)
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op.create_index("ix_teams_name", "teams", ["name"], unique=False)
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op.create_index("ix_teams_department_id", "teams", ["department_id"], unique=False)
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# 2) Employees belong to one (optional) team
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op.add_column("employees", sa.Column("team_id", sa.Integer(), nullable=True))
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op.create_index("ix_employees_team_id", "employees", ["team_id"], unique=False)
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op.create_foreign_key(
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"fk_employees_team_id_teams",
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"employees",
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"teams",
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["team_id"],
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["id"],
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ondelete="SET NULL",
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)
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# 3) Projects are owned by teams (not departments)
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op.add_column("projects", sa.Column("team_id", sa.Integer(), nullable=True))
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op.create_index("ix_projects_team_id", "projects", ["team_id"], unique=False)
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op.create_foreign_key(
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"fk_projects_team_id_teams",
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"projects",
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"teams",
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["team_id"],
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["id"],
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ondelete="SET NULL",
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)
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def downgrade() -> None:
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op.drop_constraint("fk_projects_team_id_teams", "projects", type_="foreignkey")
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op.drop_index("ix_projects_team_id", table_name="projects")
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op.drop_column("projects", "team_id")
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op.drop_constraint("fk_employees_team_id_teams", "employees", type_="foreignkey")
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op.drop_index("ix_employees_team_id", table_name="employees")
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op.drop_column("employees", "team_id")
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op.drop_index("ix_teams_department_id", table_name="teams")
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op.drop_index("ix_teams_name", table_name="teams")
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op.drop_table("teams")
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@@ -1,104 +0,0 @@
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"""Ensure human employee id is 1
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Revision ID: 7f4e2c1a9a10
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Revises: 3f2c1b9c8e12
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Create Date: 2026-02-02
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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 identifiers, used by Alembic.
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revision = "7f4e2c1a9a10"
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down_revision = "3f2c1b9c8e12"
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branch_labels = None
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depends_on = None
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def upgrade() -> None:
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"""If the (single) human employee exists but is not id=1, move it to id=1.
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This is a dev ergonomics migration: a bunch of code / examples assume the
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primary human user is employee_id=1.
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Safe behavior:
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- Only runs when there is exactly one human employee.
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- Only runs when employee id=1 is currently unused.
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- Rewrites all known FKs that point at the old id.
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"""
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conn = op.get_bind()
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human_ids = [
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row[0]
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for row in conn.execute(sa.text("SELECT id FROM employees WHERE employee_type='human' ORDER BY id"))
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]
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# Only attempt the rewrite in the "typical dev" scenario.
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if len(human_ids) != 1:
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return
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old_id = int(human_ids[0])
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if old_id == 1:
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return
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id1_exists = conn.execute(sa.text("SELECT 1 FROM employees WHERE id=1")).first() is not None
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if id1_exists:
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return
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# Update foreign keys in known tables/columns.
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conn.execute(
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sa.text("UPDATE departments SET head_employee_id=1 WHERE head_employee_id=:old_id"),
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{"old_id": old_id},
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)
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conn.execute(
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sa.text("UPDATE teams SET lead_employee_id=1 WHERE lead_employee_id=:old_id"),
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{"old_id": old_id},
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)
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conn.execute(
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sa.text("UPDATE employees SET manager_id=1 WHERE manager_id=:old_id"),
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{"old_id": old_id},
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)
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conn.execute(
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sa.text("UPDATE activities SET actor_employee_id=1 WHERE actor_employee_id=:old_id"),
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{"old_id": old_id},
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)
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conn.execute(
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sa.text("UPDATE project_members SET employee_id=1 WHERE employee_id=:old_id"),
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{"old_id": old_id},
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)
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conn.execute(
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sa.text("UPDATE tasks SET assignee_employee_id=1 WHERE assignee_employee_id=:old_id"),
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{"old_id": old_id},
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)
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conn.execute(
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sa.text("UPDATE tasks SET reviewer_employee_id=1 WHERE reviewer_employee_id=:old_id"),
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{"old_id": old_id},
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)
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conn.execute(
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sa.text("UPDATE tasks SET created_by_employee_id=1 WHERE created_by_employee_id=:old_id"),
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{"old_id": old_id},
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)
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conn.execute(
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sa.text("UPDATE task_comments SET author_employee_id=1 WHERE author_employee_id=:old_id"),
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{"old_id": old_id},
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)
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# Finally, rewrite the employee PK itself.
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conn.execute(sa.text("UPDATE employees SET id=1 WHERE id=:old_id"), {"old_id": old_id})
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# Keep the sequence in sync (Postgres).
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conn.execute(
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sa.text(
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"SELECT setval(pg_get_serial_sequence('employees','id'), (SELECT COALESCE(MAX(id), 1) FROM employees), true)"
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)
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)
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def downgrade() -> None:
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# Non-reversible in a safe way; this is a dev convenience migration.
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pass
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