feat: custom matching criteria

Author: zcesur

lib/algora/settings/settings.ex

@@ -103,7 +103,21 @@ defmodule Algora.Settings do
         [
           tech_stack: job.tech_stack,
           limit: 50,
-          users: apply_job_criteria(User, get_job_criteria(job.id))
+          users:
+            case get_job_criteria(job.id) do
+              criteria when map_size(criteria) > 0 ->
+                apply_job_criteria(User, criteria)
+
+              _ ->
+                from(u in User,
+                  where:
+                    not is_nil(u.hourly_rate_min) or
+                      fragment(
+                        "exists (select 1 from transactions t where t.user_id = ? and t.status = 'succeeded' and t.type = 'credit' and t.linked_transaction_id is not null)",
+                        u.id
+                      )
+                )
+            end
         ]
         |> Algora.Cloud.list_top_matches()
         |> load_matches_2()