Format query

src/main/kotlin/com/cosmotech/api/utils/StringExtensions.kt

@@ -40,3 +40,17 @@ fun String.shaHash(): String {
 }
 
 fun String.toRedisMetaDataKey() = "${this}MetaData"
+
+fun String.formatQuery(map: Map<String, String>): String {
+  var newValue = this
+  map.forEach { (key, value) ->
+    var sanitizedValue =
+        if (value.isNullOrBlank()) {
+          "null"
+        } else {
+          "\"${value.replace("\"","\\\"")}\""
+        }
+    newValue = newValue.replace("$$key", sanitizedValue)
+  }
+  return newValue
+}

src/test/kotlin/com/cosmotech/api/utils/StringExtensionsTests.kt

@@ -40,4 +40,27 @@ class StringExtensionsTests {
     val actual = input.toRedisMetaDataKey()
     assertEquals(expected, actual)
   }
+
+  @Test
+  fun `should format Cypher Query with variables`() {
+    val map =
+        mapOf(
+            "name" to "Joe Doe",
+            "id" to "100",
+            "object" to "{id:\"id\"}",
+            "array" to "{id:['one', 'two']}")
+    val actual = "CREATE (:Person {name: \$name, id: \$id, object: \$object, array: \$array)"
+    val expected =
+        "CREATE (:Person {name: \"Joe Doe\", id: \"100\", object: \"{id:\\\"id\\\"}\", " +
+            "array: \"{id:['one', 'two']}\")"
+    assertEquals(expected, actual.formatQuery(map))
+  }
+
+  @Test
+  fun `should format Cypher Query & replace empty value with null`() {
+    val map = mapOf("name" to "Joe Doe", "id" to " ")
+    val actual = "CREATE (:Person {name: \$name, id: \$id})"
+    val expected = "CREATE (:Person {name: \"Joe Doe\", id: null})"
+    assertEquals(expected, actual.formatQuery(map))
+  }
 }