M0: backend skeleton — Quart factory, async DB, auth, ACL spine, migrations

Foundation & Identity backend for ThoughtSync: - Quart app factory (create_app) with /api/health + SPA history-fallback - async SQLAlchemy 2.0 + asyncpg engine/session (lazy; boots without a DB) - native email+password auth via signed-cookie session (register/login/logout/me + login_required guard); bcrypt password hashing (72-byte safe) - multi-user sharing-ACL spine (rule 47): users, groups, group_members, and a polymorphic shares table + visible_to_user() SQL predicate (owner OR direct share OR group share) that M1's notes will scope through - Alembic async env (adapted from family pattern) + 0001 foundation migration - DB-free unit tests (app/health/auth-guard, password roundtrip, ACL compile) Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01FRgehjoz7Yv8LkUfADxACm
2026-07-19 13:09:37 -04:00
parent cefffa2bd6
commit 04e3ab20cf
21 changed files with 734 additions and 0 deletions
@@ -0,0 +1,48 @@
+import asyncio
+import os
+from logging.config import fileConfig
+
+from sqlalchemy import pool
+from sqlalchemy.engine import Connection
+from sqlalchemy.ext.asyncio import async_engine_from_config
+
+from alembic import context
+
+from thoughtsync.models import Base
+import thoughtsync.models.all  # noqa: F401  — registers every model on Base.metadata
+
+config = context.config
+
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+config.set_main_option(
+    "sqlalchemy.url",
+    os.environ.get("THOUGHTSYNC_DATABASE_URL", config.get_main_option("sqlalchemy.url")),
+)
+
+target_metadata = Base.metadata
+
+
+def do_run_migrations(connection: Connection) -> None:
+    context.configure(connection=connection, target_metadata=target_metadata, compare_type=True)
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+async def run_async_migrations() -> None:
+    connectable = async_engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+    async with connectable.connect() as connection:
+        await connection.run_sync(do_run_migrations)
+    await connectable.dispose()
+
+
+def run_migrations_online() -> None:
+    asyncio.run(run_async_migrations())
+
+
+run_migrations_online()
@@ -0,0 +1,26 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision: str = ${repr(up_revision)}
+down_revision: Union[str, None] = ${repr(down_revision)}
+branch_labels: Union[str, Sequence[str], None] = ${repr(branch_labels)}
+depends_on: Union[str, Sequence[str], None] = ${repr(depends_on)}
+
+
+def upgrade() -> None:
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    ${downgrades if downgrades else "pass"}
@@ -0,0 +1,80 @@
+"""foundation: users, groups, group_members, shares
+
+Revision ID: 0001
+Revises:
+Create Date: 2026-07-19
+
+The M0 identity + sharing-ACL spine. No notes yet (those arrive in M1); the
+shares table is polymorphic so notes reuse it without a schema retrofit.
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects.postgresql import CITEXT, UUID
+
+revision = "0001"
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.execute("CREATE EXTENSION IF NOT EXISTS citext")
+
+    op.create_table(
+        "users",
+        sa.Column("id", UUID(as_uuid=True), primary_key=True),
+        sa.Column("email", CITEXT(), nullable=False, unique=True),
+        sa.Column("email_verified", sa.Boolean(), nullable=False, server_default=sa.false()),
+        sa.Column("password_hash", sa.Text(), nullable=True),
+        sa.Column("display_name", sa.Text(), nullable=False),
+        sa.Column("avatar_path", sa.Text(), nullable=True),
+        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
+        sa.Column("updated_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
+    )
+    op.create_index("ix_users_email", "users", ["email"])
+
+    op.create_table(
+        "groups",
+        sa.Column("id", UUID(as_uuid=True), primary_key=True),
+        sa.Column("name", sa.Text(), nullable=False),
+        sa.Column("owner_id", UUID(as_uuid=True), sa.ForeignKey("users.id", ondelete="SET NULL"), nullable=True),
+        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
+    )
+
+    op.create_table(
+        "group_members",
+        sa.Column("id", UUID(as_uuid=True), primary_key=True),
+        sa.Column("group_id", UUID(as_uuid=True), sa.ForeignKey("groups.id", ondelete="CASCADE"), nullable=False),
+        sa.Column("user_id", UUID(as_uuid=True), sa.ForeignKey("users.id", ondelete="CASCADE"), nullable=False),
+        sa.Column("role", sa.Text(), nullable=False, server_default="member"),
+        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
+        sa.UniqueConstraint("group_id", "user_id", name="uq_group_members_group_user"),
+    )
+    op.create_index("ix_group_members_user", "group_members", ["user_id"])
+
+    op.create_table(
+        "shares",
+        sa.Column("id", UUID(as_uuid=True), primary_key=True),
+        sa.Column("resource_type", sa.Text(), nullable=False),
+        sa.Column("resource_id", UUID(as_uuid=True), nullable=False),
+        sa.Column("shared_with_user_id", UUID(as_uuid=True), sa.ForeignKey("users.id", ondelete="CASCADE"), nullable=True),
+        sa.Column("shared_with_group_id", UUID(as_uuid=True), sa.ForeignKey("groups.id", ondelete="CASCADE"), nullable=True),
+        sa.Column("permission", sa.Text(), nullable=False, server_default="view"),
+        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
+        sa.CheckConstraint(
+            "(shared_with_user_id IS NOT NULL) <> (shared_with_group_id IS NOT NULL)",
+            name="ck_shares_one_target",
+        ),
+    )
+    op.create_index("ix_shares_resource", "shares", ["resource_type", "resource_id"])
+
+
+def downgrade() -> None:
+    op.drop_index("ix_shares_resource", table_name="shares")
+    op.drop_table("shares")
+    op.drop_index("ix_group_members_user", table_name="group_members")
+    op.drop_table("group_members")
+    op.drop_table("groups")
+    op.drop_index("ix_users_email", table_name="users")
+    op.drop_table("users")
+    # citext extension is left installed — it may be in use elsewhere.