Added id validation to url update

Author: singledigit

api.yaml

@@ -293,11 +293,11 @@ paths:
         requestTemplates:
           application/json: { "Fn::Sub": "{\"TableName\": \"${LinkTable}\",\
             \"Key\": {\"id\": {\"S\": $input.json('$.id')}}, \
-            \"ExpressionAttributeNames\": {\"#u\": \"url\", \"#owner\": \"owner\"}, \
-            \"ExpressionAttributeValues\":{\":u\": {\"S\": $input.json('$.url')}, \":owner\": {\"S\": \"$context.authorizer.claims.email\"}}, \
+            \"ExpressionAttributeNames\": {\"#u\": \"url\", \"#owner\": \"owner\", \"#id\":\"id\"}, \
+            \"ExpressionAttributeValues\":{\":u\": {\"S\": $input.json('$.url')}, \":owner\": {\"S\": \"$context.authorizer.claims.email\"}, \":linkId\":{\"S\":\"$input.params().path.linkId\"}}, \
             \"UpdateExpression\": \"SET #u = :u\", \
             \"ReturnValues\": \"ALL_NEW\", \
-            \"ConditionExpression\": \"#owner = :owner\"}" }
+            \"ConditionExpression\": \"#owner = :owner AND #id = :linkId\"}" }
         passthroughBehavior: "when_no_templates"
         responses:
           "200":

templates/app/linkId/put-request.json

@@ -1,23 +1,27 @@
 {
-  "TableName": "SlipLink-LinkTable-A2SD9C321JCE",
+  "TableName": "Shortie",
   "Key": {
     "id": {
       "S": $input.json('$.id')
     }
   },
   "ExpressionAttributeNames": {
     "#u": "url",
-    "#owner": "owner"
+    "#owner": "owner",
+    "#id":"id"
   },
   "ExpressionAttributeValues": {
     ":u": {
       "S": $input.json('$.url')
     },
     ":owner": {
-      "S": "$context.authorizer.claims.email"
+      "S": "[email protected]"
+    },
+    ":linkId": {
+        "S": "$input.params().path.linkId"
     }
   },
   "UpdateExpression": "SET #u = :u",
   "ReturnValues": "ALL_NEW",
-  "ConditionExpression": "#owner = :owner"
+  "ConditionExpression": "#owner = :owner AND #id = :linkId"
 }

templates/app/post-response-200.json

@@ -0,0 +1,7 @@
+#set($inputRoot = $input.path('$'))
+{
+  "id": "$inputRoot.Attributes.id.S",
+  "url": "$inputRoot.Attributes.url.S",
+  "timestamp": "$inputRoot.Attributes.timestamp.S",
+  "owner": "$inputRoot.Attributes.owner.S"
+}

templates/app/post-response-400.json

@@ -0,0 +1,5 @@
+#set($inputRoot = $input.path('$'))
+#if($inputRoot.toString().contains("ConditionalCheckFailedException"))
+  #set($context.responseOverride.status = 200)
+  {"error": true,"message": "URL link already exists"}
+#end