feat: fetch permissions + grouped fetching

queries/permissions.sql

@@ -1,14 +1,33 @@
 
+-- name: GetAllPermissions :many
+SELECT *
+FROM permissions p
+ORDER BY p.scope;
+
+-- name: GetGroupedPermissions :many
+SELECT scope, json_agg(to_jsonb(permissions.*) ORDER BY name) as permissions
+FROM permissions
+GROUP BY scope;
+
+-- name: CreatePermission :one
+INSERT into permissions (
+    name, scope, description
+) VALUES (
+    $1, $2, $3
+) RETURNING *;
+
+-- name: FindPermission :one
+SELECT * FROM permissions
+WHERE name = $1 AND scope = $2;
+
 -- name: GetUserPermissions :many
 SELECT DISTINCT p.id,p.name,p.scope,p.description
 FROM permissions p
-
 -- From roles assigned directly to the user
 LEFT JOIN role_permissions rp_user
     ON p.id = rp_user.permission_id
 LEFT JOIN user_roles ur
     ON rp_user.role_id = ur.role_id AND ur.user_id = $1
-
 -- From roles assigned to user's groups
 LEFT JOIN user_groups ug
     ON ug.user_id = $1
@@ -16,15 +35,12 @@ LEFT JOIN group_roles gr
     ON ug.group_id = gr.group_id
 LEFT JOIN role_permissions rp_group
     ON gr.role_id = rp_group.role_id AND rp_group.permission_id = p.id
-
 -- Direct permissions to user
 LEFT JOIN user_permissions up
     ON up.user_id = $1 AND up.permission_id = p.id
-
 -- Direct permissions to user's groups
 LEFT JOIN group_permissions gp
     ON gp.group_id = ug.group_id AND gp.permission_id = p.id
-
 WHERE ur.user_id IS NOT NULL
    OR gr.group_id IS NOT NULL
    OR up.user_id IS NOT NULL