halkyon/apps/train/halkyon_train_server/migrations/20261111091721828-shared-spaces/migration.sql
Tizian 「ティツィアーン」 d08d8ad545
feat(base,learn): spaces people share, kept by halkyon_base
ADR 0044, step 2 (D1, D2, D11, D13, and D15 to D17, decided today).
halkyon_base keeps the spaces several people share, for every app:
shared_space, its members with their roles (Owner, Editor, Viewer), and
invitations by handle waiting for someone with no account on the
service yet. The sharedSpace endpoint creates a space, lists its
members, invites by handle, changes roles, removes members, hands the
space on, leaves and deletes it.

Who may do what:
- Only people with an identity reach the endpoint.
- A space the caller isn't in can't be told from one that doesn't
  exist.
- Members are named by their membership, never by their account's ID.
- Only the Owner manages the members, unless the space lets members
  invite.
- The Owner's role passes only by handing the space on, and the Owner
  leaves only naming who takes it on.
- An invitation counts as an answer about a handle, as it tells whether
  one exists.
Every rule has a test asserting the refusal.

The module stays free of the sync engine: a host hands it a SpaceGrants,
and every call runs in the module's transaction, so the engine's grants
follow the roles or nothing changes. The Owner and an Editor write; a
Viewer reads. Learn hands over SyncSpaceGrants on OfflineSyncSpaces. Todo
hands over none yet, so its server refuses until its projects are
shared.

Deleting an account hands each space the person owns to the Editor who
joined first, else the Viewer who joined first. A space with no other
member goes. This runs before the host's own deletions. A person's first
sign-in on a service makes their waiting invitations memberships, in the
same transaction that makes them a person there.

Migrations: the module's and every host's (Learn, Todo, Train, Meditate)
create the three tables, their indexes and the two cascading foreign
keys to shared_space, and nothing else. The old server keeps working.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>
2026-11-11 10:54:19 +01:00

152 lines
4.5 KiB
PL/PgSQL

BEGIN;
--
-- Function: gen_random_uuid_v7()
-- Source: https://gist.github.com/kjmph/5bd772b2c2df145aa645b837da7eca74
-- License: MIT (copyright notice included on the generator source code).
--
create or replace function gen_random_uuid_v7()
returns uuid
as $$
begin
-- use random v4 uuid as starting point (which has the same variant we need)
-- then overlay timestamp
-- then set version 7 by flipping the 2 and 1 bit in the version 4 string
return encode(
set_bit(
set_bit(
overlay(uuid_send(gen_random_uuid())
placing substring(int8send(floor(extract(epoch from clock_timestamp()) * 1000)::bigint) from 3)
from 1 for 6
),
52, 1
),
53, 1
),
'hex')::uuid;
end
$$
language plpgsql
volatile;
--
-- ACTION CREATE TABLE
--
CREATE TABLE "shared_space" (
"id" uuid PRIMARY KEY DEFAULT gen_random_uuid_v7(),
"kind" text NOT NULL,
"createdAt" timestamp without time zone NOT NULL,
"joinByLink" boolean NOT NULL DEFAULT false,
"membersInvite" boolean NOT NULL DEFAULT false
);
--
-- ACTION CREATE TABLE
--
CREATE TABLE "shared_space_invitation" (
"id" uuid PRIMARY KEY DEFAULT gen_random_uuid_v7(),
"sharedSpaceId" uuid NOT NULL,
"authUserId" uuid NOT NULL,
"role" text NOT NULL,
"invitedBy" uuid NOT NULL,
"invitedAt" timestamp without time zone NOT NULL
);
-- Indexes
CREATE UNIQUE INDEX "shared_space_invitation_space_person_idx" ON "shared_space_invitation" USING btree ("sharedSpaceId", "authUserId");
CREATE INDEX "shared_space_invitation_person_idx" ON "shared_space_invitation" USING btree ("authUserId");
--
-- ACTION CREATE TABLE
--
CREATE TABLE "shared_space_member" (
"id" uuid PRIMARY KEY DEFAULT gen_random_uuid_v7(),
"sharedSpaceId" uuid NOT NULL,
"authUserId" uuid NOT NULL,
"role" text NOT NULL,
"joinedAt" timestamp without time zone NOT NULL
);
-- Indexes
CREATE UNIQUE INDEX "shared_space_member_space_person_idx" ON "shared_space_member" USING btree ("sharedSpaceId", "authUserId");
CREATE INDEX "shared_space_member_person_idx" ON "shared_space_member" USING btree ("authUserId");
--
-- ACTION CREATE FOREIGN KEY
--
ALTER TABLE ONLY "shared_space_invitation"
ADD CONSTRAINT "shared_space_invitation_fk_0"
FOREIGN KEY("sharedSpaceId")
REFERENCES "shared_space"("id")
ON DELETE CASCADE
ON UPDATE NO ACTION;
--
-- ACTION CREATE FOREIGN KEY
--
ALTER TABLE ONLY "shared_space_member"
ADD CONSTRAINT "shared_space_member_fk_0"
FOREIGN KEY("sharedSpaceId")
REFERENCES "shared_space"("id")
ON DELETE CASCADE
ON UPDATE NO ACTION;
--
-- MIGRATION VERSION FOR halkyon_train
--
INSERT INTO "serverpod_migrations" ("module", "version", "timestamp")
VALUES ('halkyon_train', '20261111091721828-shared-spaces', now())
ON CONFLICT ("module")
DO UPDATE SET "version" = '20261111091721828-shared-spaces', "timestamp" = now();
--
-- MIGRATION VERSION FOR halkyon_base
--
INSERT INTO "serverpod_migrations" ("module", "version", "timestamp")
VALUES ('halkyon_base', '20261111091525523-shared-spaces', now())
ON CONFLICT ("module")
DO UPDATE SET "version" = '20261111091525523-shared-spaces', "timestamp" = now();
--
-- MIGRATION VERSION FOR serverpod
--
INSERT INTO "serverpod_migrations" ("module", "version", "timestamp")
VALUES ('serverpod', '20260824182259319', now())
ON CONFLICT ("module")
DO UPDATE SET "version" = '20260824182259319', "timestamp" = now();
--
-- MIGRATION VERSION FOR serverpod_auth_idp
--
INSERT INTO "serverpod_migrations" ("module", "version", "timestamp")
VALUES ('serverpod_auth_idp', '20260924105404509', now())
ON CONFLICT ("module")
DO UPDATE SET "version" = '20260924105404509', "timestamp" = now();
--
-- MIGRATION VERSION FOR serverpod_offline_sync
--
INSERT INTO "serverpod_migrations" ("module", "version", "timestamp")
VALUES ('serverpod_offline_sync', '20260914143806119', now())
ON CONFLICT ("module")
DO UPDATE SET "version" = '20260914143806119', "timestamp" = now();
--
-- MIGRATION VERSION FOR halkyon_oidc
--
INSERT INTO "serverpod_migrations" ("module", "version", "timestamp")
VALUES ('halkyon_oidc', '20261023180644988', now())
ON CONFLICT ("module")
DO UPDATE SET "version" = '20261023180644988', "timestamp" = now();
--
-- MIGRATION VERSION FOR serverpod_auth_core
--
INSERT INTO "serverpod_migrations" ("module", "version", "timestamp")
VALUES ('serverpod_auth_core', '20260924105232991', now())
ON CONFLICT ("module")
DO UPDATE SET "version" = '20260924105232991', "timestamp" = now();
COMMIT;