USE provisioning;
SET autocommit=0;

ALTER TABLE voip_sound_sets
    ADD COLUMN parent_id int(11) DEFAULT NULL,
    ADD KEY parent_id_idx (parent_id),
    ADD CONSTRAINT vss_parent_id_ref
        FOREIGN KEY (parent_id)
        REFERENCES voip_sound_sets (id)
        ON UPDATE SET NULL ON DELETE SET NULL,
    ADD COLUMN expose_to_customer boolean NOT NULL DEFAULT 0,
    ADD KEY expose_to_customer_idx (expose_to_customer);

ALTER TABLE voip_sound_files
    ADD COLUMN use_parent boolean NOT NULL DEFAULT 0,
    DROP KEY handle_id_ref,
    ADD KEY handle_set_id_idx (handle_id, set_id);

CREATE OR REPLACE VIEW v_sound_set_files AS
WITH RECURSIVE cte as (
    SELECT v.id AS set_id, v.reseller_id, v.contract_id, v.name, v.description,
           v.handle_id, v.handle_name,
           v.id AS data_set_id,
           JSON_ARRAY(v.id) AS parent_chain
      FROM (SELECT s.*, h.id as handle_id, h.name as handle_name
            FROM (voip_sound_sets s, voip_sound_handles h)
           ) AS v
      LEFT JOIN voip_sound_files f ON f.handle_id = v.handle_id AND f.set_id = v.id
     WHERE v.parent_id IS NULL
    UNION all
    SELECT v.id AS set_id, v.reseller_id, v.contract_id, v.name, v.description,
           v.handle_id, v.handle_name,
           IF(v.use_parent = 0, v.id, cte.data_set_id) AS data_set_id,
           JSON_ARRAY_INSERT(cte.parent_chain, '$[0]', v.id) AS parent_chain
      FROM (SELECT t.*, f.filename, f.use_parent
            FROM (SELECT s.*, h.id as handle_id, h.name as handle_name
                  FROM (voip_sound_sets s, voip_sound_handles h)
                 ) AS t
            LEFT JOIN voip_sound_files f ON f.handle_id = t.handle_id AND f.set_id = t.id
           ) AS v
      JOIN cte ON cte.set_id = v.parent_id AND cte.handle_id = v.handle_id
)
SELECT cte.set_id, cte.reseller_id, cte.contract_id, cte.name, cte.description,
       cte.handle_id, cte.handle_name,
       vsf.id as file_id, vsf.filename, vsf.loopplay,
       REPLACE(REPLACE(REPLACE(
          JSON_REMOVE(cte.parent_chain, '$[0]'),
          '[', ''), ']', ''), ', ', ':'
       ) AS parent_chain,
       data_set_id,
       vsf.data
  FROM cte
  LEFT JOIN voip_sound_files vsf ON vsf.set_id = cte.data_set_id AND vsf.handle_id = cte.handle_id;

COMMIT;

UPDATE voip_preferences SET expose_to_customer = 1 where attribute = 'sound_set';