tenseleyflow/shithub / d2276ce

+-- SPDX-License-Identifier: AGPL-3.0-or-later

+--

+-- S32 — Repo topics. One row per (repo, topic). Topic is a citext

+-- so case-insensitive uniqueness comes free, and the shape is

+-- compatible with case-insensitive search later. Caps:

+--   - 20 topics per repo (enforced in the orchestrator)

+--   - 50 chars per topic (CHECK below)

+-- Topic shape (lowercase alphanumeric + hyphen, can't lead/trail with

+-- hyphen) is enforced in the Go validator since regex CHECKs in

+-- Postgres are noisier than the Go-side equivalent.

+

+-- +goose Up

+CREATE TABLE repo_topics (

+    repo_id    bigint      NOT NULL REFERENCES repos(id) ON DELETE CASCADE,

+    topic      citext      NOT NULL,

+    created_at timestamptz NOT NULL DEFAULT now(),

+

+    PRIMARY KEY (repo_id, topic),

+    CONSTRAINT repo_topics_topic_length CHECK (char_length(topic::text) BETWEEN 1 AND 50)

+);

+

+-- Index for "repos with topic X" lookups (post-MVP topic-filter on

+-- explore page). Cheap and indexes are eventually consistent with

+-- the workload.

+CREATE INDEX repo_topics_topic_idx ON repo_topics (topic);

+

+-- +goose Down

+DROP TABLE IF EXISTS repo_topics;