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cmd/server/migrations/postgres/003_content_taxonomy.sql

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+-- +goose Up
+CREATE TABLE IF NOT EXISTS categories (
+    id BIGSERIAL PRIMARY KEY,
+    slug TEXT NOT NULL UNIQUE,
+    name TEXT NOT NULL
+);
+ALTER TABLE content ADD COLUMN IF NOT EXISTS category_id BIGINT REFERENCES categories(id);
+CREATE INDEX IF NOT EXISTS idx_content_category_id ON content(category_id);
+
+CREATE TABLE IF NOT EXISTS badges (
+    id BIGSERIAL PRIMARY KEY,
+    name TEXT NOT NULL UNIQUE
+);
+CREATE TABLE IF NOT EXISTS content_badges (
+    content_id BIGINT NOT NULL REFERENCES content(id) ON DELETE CASCADE,
+    badge_id BIGINT NOT NULL REFERENCES badges(id) ON DELETE CASCADE,
+    PRIMARY KEY (content_id, badge_id)
+);
+CREATE INDEX IF NOT EXISTS idx_content_badges_badge_id ON content_badges(badge_id);
+
+-- +goose Down
+DROP TABLE IF EXISTS content_badges;
+DROP TABLE IF EXISTS badges;
+DROP INDEX IF EXISTS idx_content_category_id;
+ALTER TABLE content DROP COLUMN IF EXISTS category_id;
+DROP TABLE IF EXISTS categories;