Simplify. We don't need to do everything

vars/addVersionFromNexusRepo.groovy

@@ -11,30 +11,23 @@ Jenkins Plugin dependencies:
 
 */
 
-// Define the enum
-enum BuildNumFlags {
-
-    IS_COMMITS_SINCE_TAG,
-    IS_JOB_BUILD_NUMBER,
-    IS_FROM_QUERY
-
-}
-
-Map call(Map config = [:]) {
-    def defaults = [
+Map call(Map config = [:], Map queryParams = [:]) {
+    Map defaults = [
         nexusBase: 'https://repo.thejimnicholson.com',
         searchAPI: 'service/rest/v1/search',
-        buildFlag: BuildNumFlags.IS_FROM_QUERY,
-        queryParams: [
+    ]
+
+    Map queryParamsDefaults: [
         repository: 'tools',
         sort: 'name',
         name: 'tests/test-something*'
     ]
-    ]
+
     Map runConfig = defaults + config
+    Map query = queryParamsDefaults + queryParams
 
     nexusURL = runConfig.nexusBase + '/' + runConfig.searchAPI
-    nexusSearch = buildUrlWithQueryParams(nexusURL, runConfig.queryParams)
+    nexusSearch = buildUrlWithQueryParams(nexusURL, query)
 
     response = httpRequest acceptType: 'APPLICATION_JSON',
       contentType: 'APPLICATION_JSON',
@@ -43,31 +36,13 @@ Map call(Map config = [:]) {
     body = response.content
     assets = readJSON text: body
     latest = assets.items.last()
-
     version = latest.version
     buildNumFromQuery = '1'
-    if (version == null) {
+    if ((latest.version ?: null) == null) {
         matches = (latest.name =~ /.*-([0-9\.]+)-([0-9]+)\.)[0]/)[0]
         version = matches[1]
         buildNumFromQuery = matches[2]
     }
-    switch (runConfig.buildFlag) {
-        case BuildNumFlags.IS_COMMITS_SINCE_TAG:
-            build = sh(
-              script: 'git rev-list $(git tag | tail -1).. --count',
-              returnStdout: true
-            ).trim()
-            break
-        case BuildNumFlags.IS_JOB_BUILD_NUMBER:
-            build = env.BUILD_NUMBER
-            break
-        case BuildNumFlags.IS_FROM_QUERY:
-            build = buildNumFromQuery
-            break
-        default:
-            build = buildNumFromQuery
-            break
-    }
     runConfig.nexusQuery = nexusSearch
     runConfig.latestVersion = version
     runConfig.latestBuild = build