CREATE FUNCTION update_signatures(updateday date, checkdata boolean DEFAULT true) RETURNS boolean
    LANGUAGE plpgsql
    SET "TimeZone" TO 'UTC'
    AS $$
BEGIN

-- new function for updating signature information post-rapid-release
-- designed to be run once per UTC day.
-- running it repeatedly won't cause issues
-- combines NULL and empty signatures

-- create temporary table

create temporary table new_signatures
on commit drop as
select coalesce(signature,'') as signature,
	product::citext as product,
	version::citext as version,
	build, NULL::INT as product_version_id,
	min(date_processed) as first_report
from reports
where date_processed >= updateday
	and date_processed <= (updateday + 1)
group by signature, product, version, build;

PERFORM 1 FROM new_signatures;
IF NOT FOUND THEN
	IF checkdata THEN
		RAISE EXCEPTION 'no signature data found in reports for date %',updateday;
	END IF;
END IF;

analyze new_signatures;

-- add product IDs for betas and matching builds
update new_signatures
set product_version_id = product_versions.product_version_id
from product_versions JOIN product_version_builds
	ON product_versions.product_version_id = product_version_builds.product_version_id
where product_versions.release_version = new_signatures.version
	and product_versions.product_name = new_signatures.product
	and product_version_builds.build_id::text = new_signatures.build;

-- add product IDs for builds that don't match
update new_signatures
set product_version_id = product_versions.product_version_id
from product_versions JOIN product_version_builds
	ON product_versions.product_version_id = product_version_builds.product_version_id
where product_versions.release_version = new_signatures.version
	and product_versions.product_name = new_signatures.product
	and product_versions.build_type IN ('release','nightly', 'aurora')
	and new_signatures.product_version_id IS NULL;

analyze new_signatures;

-- update signatures table

insert into signatures ( signature, first_report, first_build )
select new_signatures.signature, min(new_signatures.first_report),
	min(build_numeric(new_signatures.build))
from new_signatures
left outer join signatures
	on new_signatures.signature = signatures.signature
where signatures.signature is null
	and new_signatures.product_version_id is not null
group by new_signatures.signature;

-- update signature_products table

insert into signature_products ( signature_id, product_version_id, first_report )
select signatures.signature_id,
		new_signatures.product_version_id,
		min(new_signatures.first_report)
from new_signatures JOIN signatures
	ON new_signatures.signature = signatures.signature
	left outer join signature_products
		on signatures.signature_id = signature_products.signature_id
		and new_signatures.product_version_id = signature_products.product_version_id
where new_signatures.product_version_id is not null
	and signature_products.signature_id is null
group by signatures.signature_id,
		new_signatures.product_version_id;

-- recreate the rollup from scratch

DELETE FROM signature_products_rollup;

insert into signature_products_rollup ( signature_id, product_name, ver_count, version_list )
select
	signature_id, product_name, count(*) as ver_count,
		array_accum(version_string ORDER BY product_versions.version_sort)
from signature_products JOIN product_versions
	USING (product_version_id)
group by signature_id, product_name;

return true;
end;
$$;


