(cloud) adds basic capabilities for queries

deps.edn

@@ -2,6 +2,7 @@
  :deps {com.cognitect/anomalies {:mvn/version "0.1.12"}
         com.datomic/client-cloud {:mvn/version "1.0.123"}
         com.datomic/ion {:mvn/version "1.0.62"}
+        clj-time/clj-time {:mvn/version "0.15.2"}
         org.clojure/clojure {:mvn/version "1.10.1"}
         org.clojure/data.json {:mvn/version "0.2.6"}}
  :mvn/repos {"datomic-cloud" {:url "s3://datomic-releases-1fc2183a/maven/releases"}}}

iol_ion/src/iol_ion/query.clj

@@ -1,4 +1,5 @@
-(ns iol-ion.query)
+(ns iol-ion.query
+  (:require [clj-time.core :as time]))
 
 #_{:clj-kondo/ignore [:clojure-lsp/unused-public-var]}
 (defn dollars-0? [amt]
@@ -7,3 +8,6 @@
 #_{:clj-kondo/ignore [:clojure-lsp/unused-public-var]}
 (defn dollars= [amt1 amt2]
   (dollars-0? (- amt1 amt2) ))
+
+(defn local-now []
+  (time/to-time-zone (time/now) (time/time-zone-for-id "America/Los_Angeles")))

resources/datomic/ion-config.edn

@@ -8,5 +8,11 @@
             iol-ion.tx/upsert-transaction
             iol-ion.tx/pay
             iol-ion.query/dollars=
-            iol-ion.query/dollars-0?] 
+            iol-ion.query/dollars-0?
+
+            iol-ion.query/local-now
+            clj-time.coerce/to-date-time
+            clj-time.coerce/to-date
+            clj-time.core/minus
+            clj-time.core/days]
  :app-name "iol-cloud"}