-- name: CreateResource :one
INSERT INTO resources(
    id, parent, name, dir, created, modified
) VALUES (
    $1, $2, $3, $4, NOW(), NOW()
) RETURNING *;

-- name: UpdateResourceContents :exec
UPDATE resources
SET
    size = $1,
    sha256sum = $2,
    modified = NOW()
WHERE id = $3;

-- name: UpdateResourceModified :exec
UPDATE resources
SET
    modified = NOW()
WHERE id = $1;

-- name: UpdateResourceParent :exec
UPDATE resources
SET
    parent = @parent::uuid,
    modified = NOW()
WHERE id = @id::uuid;

-- name: UpdateResourceName :exec
UPDATE resources
SET
    name = CASE WHEN (@name::text = '') THEN name ELSE @name::text END,
    modified = NOW()
WHERE id = @id::uuid;



-- name: DeleteRecursive :many
WITH RECURSIVE nodes(id, parent) AS (
    SELECT r.id, r.parent
    FROM resources r WHERE r.id = @id::uuid
  UNION ALL
    SELECT r.id, r.parent
    FROM resources r JOIN nodes n on r.parent = n.id
    WHERE deleted IS NULL
)
UPDATE resources
SET modified = NOW(), deleted = NOW()
WHERE id in (SELECT id FROM nodes)
RETURNING id;

-- name: HardDeleteRecursive :many
WITH RECURSIVE nodes(id, parent) AS (
    SELECT r.id, r.parent
    FROM resources r WHERE r.id = @id::uuid
  UNION ALL
    SELECT r.id, r.parent
    FROM resources r JOIN nodes n on r.parent = n.id
    WHERE deleted IS NULL
)
DELETE FROM resources
WHERE id in (SELECT id FROM nodes)
RETURNING id;