Add loaders + game versions param to mods (#528)

migrations/20230127233123_loader-gv-mod.sql

@@ -0,0 +1,21 @@
+-- Add migration script here
+ALTER TABLE mods ADD COLUMN loaders varchar(255)[] NOT NULL default array[]::varchar[];
+ALTER TABLE mods ADD COLUMN game_versions varchar(255)[] NOT NULL default array[]::varchar[];
+
+UPDATE mods
+SET loaders = (
+    SELECT COALESCE(ARRAY_AGG(DISTINCT l.loader) filter (where l.loader is not null), array[]::varchar[])
+    FROM versions v
+         INNER JOIN loaders_versions lv ON lv.version_id = v.id
+         INNER JOIN loaders l on lv.loader_id = l.id
+    WHERE v.mod_id = mods.id
+);
+
+UPDATE mods
+SET game_versions = (
+    SELECT COALESCE(ARRAY_AGG(DISTINCT gv.version) filter (where gv.version is not null), array[]::varchar[])
+    FROM versions v
+         INNER JOIN game_versions_versions gvv ON v.id = gvv.joining_version_id
+         INNER JOIN game_versions gv on gvv.game_version_id = gv.id
+    WHERE v.mod_id = mods.id
+);