Refine the parsing to work with various situations

vars/addVersionFromNexusRepo.groovy

@@ -36,17 +36,20 @@ Map call(Map config = [:], Map queryParams = [:]) {
     body = response.content
     assets = readJSON text: body
     latest = assets.items.last()
-    version = latest.version
-    build = 0
-    buildNumFromQuery = '1'
-    if ((latest.version ?: null) == null) {
-        matches = (latest.name =~ /.*-([0-9\.]+)-([0-9]+)\.)[0]/)[0]
-        version = matches[1]
-        build = matches[2]
+    version = latest.version ?: (latest.name =~ /.*-([0-9\.]+)-([0-9]+)\..*/)[0][1]
+    build = latest.version ?: (latest.name =~ /.*-([0-9\.]+)-([0-9]+)\..*/)[0][2]
+
+    if (version == null) {
+        // Call the error method and pass a string indicating version was null and name is not parseable
+        error('Version was null and name is not parseable')
     }
-    runConfig.nexusQuery = nexusSearch
-    runConfig.latestVersion = version
-    runConfig.latestBuild = build
+
+    if (build == null) {
+        unstable("Build number could not be found in latest asset match (${latest.name})")
+    }
+    build = build ?: env.BUILD_NUMBER
+    runConfig.version = version
+    runConfig.build = build
     return runConfig
 }