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claudemesh/packages/db/migrations/0024_general_topic_backfill.sql
Alejandro Gutiérrez 4ebd138a68
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fix(migrations): explicit id + enum cast for 0024 backfill
- mesh.topic.id has no PG-side default (drizzle $defaultFn is ORM-only)
- mesh.topic_member.role needs an explicit cast to the enum type

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-02 16:34:28 +01:00

40 lines
1.5 KiB
SQL

-- 0024_general_topic_backfill.sql
--
-- Every mesh now ships with a default #general topic auto-created on mesh
-- creation. This migration backfills the convention for meshes that
-- predate that hook:
-- 1. Insert a #general row for every mesh that doesn't already have one.
-- 2. Subscribe every active (non-revoked) member to #general.
--
-- Idempotent — safe to re-run. The unique indices on (mesh_id, name) and
-- (topic_id, member_id) make the inserts no-ops on the second pass.
-- mesh.topic.id has no Postgres-side default (drizzle's $defaultFn runs
-- only via the ORM), so generate a 32-char lowercase-hex id from a v4
-- UUID with dashes stripped. gen_random_uuid is built into Postgres 13+
-- so no pgcrypto extension required.
INSERT INTO mesh.topic (id, mesh_id, name, description, visibility)
SELECT
replace(gen_random_uuid()::text, '-', ''),
m.id,
'general',
'Default mesh-wide channel. Every member can read and post.',
'public'
FROM mesh.mesh m
WHERE m.archived_at IS NULL
AND NOT EXISTS (
SELECT 1 FROM mesh.topic t
WHERE t.mesh_id = m.id AND t.name = 'general'
);
INSERT INTO mesh.topic_member (topic_id, member_id, role)
SELECT
t.id,
mm.id,
(CASE WHEN m.owner_user_id = mm.user_id THEN 'lead' ELSE 'member' END)::mesh.topic_member_role
FROM mesh.topic t
JOIN mesh.mesh m ON m.id = t.mesh_id
JOIN mesh.member mm ON mm.mesh_id = t.mesh_id AND mm.revoked_at IS NULL
WHERE t.name = 'general'
ON CONFLICT (topic_id, member_id) DO NOTHING;