feat(connector): add VDM type data class for ProcedureItem and enums for ItemType objects

connector/shared/src/commonMain/kotlin/io/anthonyberg/connector/shared/vdmj/type/Aircraft.kt

@@ -5,7 +5,7 @@ package io.anthonyberg.connector.shared.vdmj.type
  */
 data class Aircraft(
     val items: Map<String, Switch>, // TODO value should be ItemObject type
-    val procedure: MutableList<String> // TODO change String to a ProcedureItem type
+    val procedure: MutableList<ProcedureItem>
 ) {
     /**
      * Converts variables in object to a String that can be passed into VDM
@@ -52,9 +52,8 @@ data class Aircraft(
     private fun procedureToVDMString(): String {
         var output = "["
 
-        // TODO change item type to Procedure type
-        for (item: String in procedure) {
-            output += item
+        for (item: ProcedureItem in procedure) {
+            output += item.toVDMString()
             output += ","
         }
 

connector/shared/src/commonMain/kotlin/io/anthonyberg/connector/shared/vdmj/type/ItemType.kt

@@ -0,0 +1,21 @@
+package io.anthonyberg.connector.shared.vdmj.type
+
+/**
+ * Item type to identify what an Item is in an aircraft
+ * and therefore used to change the logic for testing the item
+ */
+enum class ItemType {
+    SWITCH,
+    KNOB,
+    BUTTON,
+    THROTTLE;
+
+    /**
+     * Returns a VDM Object as a string
+     *
+     * @return String that is a VDM representation, for example `<SWITCH>`
+     */
+    fun toVDMString(): String {
+        return "<$name>"
+    }
+}

connector/shared/src/commonMain/kotlin/io/anthonyberg/connector/shared/vdmj/type/ProcedureItem.kt

@@ -0,0 +1,17 @@
+package io.anthonyberg.connector.shared.vdmj.type
+
+data class ProcedureItem(
+    val dref: String,
+    val type: ItemType,
+    val goal: Int, // TODO add checks for goal
+    val complete: Boolean,
+) {
+    /**
+     * Converts to a String for a VDM representation of a ChecklistItem record
+     *
+     * @return String record for VDM ChecklistItem
+     */
+    fun toVDMString(): String {
+        return "mk_ChecklistItem(\"$dref\", ${type.toVDMString()}, $goal, $complete)"
+    }
+}