From a8a16a0663e298cdec1bf25144b19eb0cf6c297a Mon Sep 17 00:00:00 2001
From: Josha von Gizycki <josha.von.gizycki@triology.de>
Date: Wed, 7 Nov 2018 14:56:02 +0100
Subject: [PATCH] instance editing with property merging

---
 project.clj                    |  1 +
 src/wanijo/instance/domain.clj | 32 +++++++++++++++++++++++++++-----
 src/wanijo/instance/forms.clj  | 18 +++++++++++++-----
 src/wanijo/instance/view.clj   |  2 +-
 4 files changed, 42 insertions(+), 11 deletions(-)

diff --git a/project.clj b/project.clj
index 24321d3..e20a9f8 100644
--- a/project.clj
+++ b/project.clj
@@ -31,6 +31,7 @@
                              [lein-kibit "LATEST"]]}
              :uberjar {:aot :all}}
 
+  :repl-options {:init-ns wanijo.framework.repl}
   :ring {:handler wanijo.handler/app}
   :less {:source-paths ["resources/app/stylesheets"]
          :target-path "resources/public/css"}
diff --git a/src/wanijo/instance/domain.clj b/src/wanijo/instance/domain.clj
index 5e0d5cd..56570f8 100644
--- a/src/wanijo/instance/domain.clj
+++ b/src/wanijo/instance/domain.clj
@@ -32,7 +32,8 @@
    CREATE (p:property {uuid:{prop_uuid}})-[:of]->(i),
           (p)-[:of]->(a)
      SET p.value = {value},
-         p.created_at = {created_at}")
+         p.created_at = {created_at},
+         p.updated_at = {updated_at}")
 
 (defn create! [schema-uuid instance]
   (let [instance-uuid (neo4j/uuid)
@@ -82,8 +83,29 @@
      SET i.name = {name},
          i.updated_at = {updated_at}")
 
+(neo4j/defquery edit-property
+  "MATCH (i:instance {uuid:{instance_uuid}}),
+         (a:attribute {uuid:{attribute_uuid}})
+   MERGE (p:property {uuid:{uuid}})-[:of]->(i)
+   MERGE (p)-[:of]->(a)
+   ON CREATE SET p.created_at = {now},
+                 p.updated_at = {now},
+                 p.value = {value}
+   ON MATCH SET p.updated_at = {now},
+                p.value = {value}")
+
 (defn edit! [instance]
-  (neo4j/exec-query! edit-instance
-                     {:uuid (:uuid instance)
-                      :name (:name instance)
-                      :updated_at (neo4j/now-str)}))
+  (clojure.pprint/pprint instance)
+  (let [prop-tuples (map #(vector edit-property
+                                  {:uuid (:uuid % (neo4j/uuid))
+                                   :now (neo4j/now-str)
+                                   :value (:value %)
+                                   :instance_uuid (:uuid instance)
+                                   :attribute_uuid (-> % :attribute :uuid)})
+                         (:properties instance))]
+    (apply neo4j/exec-queries!
+           (concat [[edit-instance
+                      {:uuid (:uuid instance)
+                       :name (:name instance)
+                       :updated_at (neo4j/now-str)}]]
+                   prop-tuples))))
diff --git a/src/wanijo/instance/forms.clj b/src/wanijo/instance/forms.clj
index b14a66e..7c5c5ce 100644
--- a/src/wanijo/instance/forms.clj
+++ b/src/wanijo/instance/forms.clj
@@ -20,6 +20,9 @@
    :required (= 1 (:required attr))
    :widget (attr-type->widget (:type attr))})
 
+(defn attr->uuid-field-id [attr]
+  (keyword (str "attr-" (:uuid attr) "-prop-uuid")))
+
 (defn with-attributes [attrs]
   (update form
           :fields
@@ -27,21 +30,26 @@
             (reduce (fn [fields attr]
                       (assoc fields
                              (attr->field-id attr)
-                             (attr->field attr)))
+                             (attr->field attr)
+                             (attr->uuid-field-id attr)
+                             {:widget :hidden}))
                     fields
                     attrs))))
 
 (defn form-data->instance [form-data attrs]
   {:name (:name form-data)
-   :properties (map (fn [ra]
-                      {:attribute ra
-                       :value ((attr->field-id ra) form-data)})
+   :properties (map (fn [attr]
+                      {:attribute attr
+                       :value ((attr->field-id attr) form-data)
+                       :uuid ((attr->uuid-field-id attr) form-data)})
                     attrs)})
 
 (defn instance->form-data [instance]
   (merge {:name (:name instance)}
          (reduce #(assoc %1
                          (attr->field-id (:attribute %2))
-                         (:value %2))
+                         (:value %2)
+                         (attr->uuid-field-id (:attribute %2))
+                         (:uuid %2))
                  {}
                  (:properties instance))))
diff --git a/src/wanijo/instance/view.clj b/src/wanijo/instance/view.clj
index 26f7f3c..e1aa096 100644
--- a/src/wanijo/instance/view.clj
+++ b/src/wanijo/instance/view.clj
@@ -41,4 +41,4 @@
    [[:h1 (:name instance)]
     (hform/form-to [:post (path :instance-edit instance)]
                    (form/render-widgets form form-data req)
-                   (hform/submit-button "Create!"))]))
+                   (hform/submit-button "Edit!"))]))