CREATE TABLE module_prefix_snapshot_row (
    tenant_id     UUID NOT NULL,
    module_id     UUID NOT NULL,
    ord           INTEGER NOT NULL,
    prefix        TEXT NOT NULL,
    community_id  UUID,
    source        TEXT NOT NULL DEFAULT '',
    PRIMARY KEY (tenant_id, module_id, ord),
    FOREIGN KEY (tenant_id, module_id)
        REFERENCES module_prefix_snapshot (tenant_id, module_id) ON DELETE CASCADE
);

-- prefixes_json from Go json.Marshal(PrefixRow) used "Prefix"/"CommunityID"/"Source" before json tags.
INSERT INTO module_prefix_snapshot_row (tenant_id, module_id, ord, prefix, community_id, source)
SELECT tenant_id,
    module_id,
    (row_number() OVER (PARTITION BY tenant_id, module_id ORDER BY ordinality) - 1)::int,
    prefix,
    NULLIF(community_id, '')::uuid,
    COALESCE(source, '')
FROM (
    SELECT mps.tenant_id,
        mps.module_id,
        t.ordinality,
        COALESCE(
            NULLIF(trim(t.elem->>'prefix'), ''),
            NULLIF(trim(t.elem->>'Prefix'), '')
        ) AS prefix,
        COALESCE(
            NULLIF(trim(t.elem->>'community_id'), ''),
            NULLIF(trim(t.elem->>'CommunityID'), '')
        ) AS community_id,
        COALESCE(
            NULLIF(trim(t.elem->>'source'), ''),
            NULLIF(trim(t.elem->>'Source'), ''),
            ''
        ) AS source
    FROM module_prefix_snapshot mps
    CROSS JOIN LATERAL jsonb_array_elements(mps.prefixes_json) WITH ORDINALITY AS t(elem, ordinality)
    WHERE jsonb_typeof(mps.prefixes_json) = 'array'
      AND jsonb_array_length(mps.prefixes_json) > 0
) parsed
WHERE parsed.prefix IS NOT NULL
  AND trim(parsed.prefix) <> '';

ALTER TABLE module_prefix_snapshot DROP COLUMN prefixes_json;