Add versions to build (#3)

* Add build.gradle versions

* Create versions.gradle

* Update appveyor.yml

Author: ThadHouse

appveyor.yml

@@ -19,7 +19,7 @@ install:
 cache: C:\Users\appveyor\.gradle
 build_script:
 - ps: >-
-    ./gradlew build --continue --no-daemon
+    ./gradlew build updateVersions --continue --no-daemon
 
     if ($lastexitcode -ne 0) {
         throw ("Exec: " + $errorMessage)

build.gradle

@@ -1,11 +1,31 @@
 plugins {
     id 'java-gradle-plugin'
     id 'maven-publish'
+    id "edu.wpi.first.wpilib.versioning.WPILibVersioningPlugin" version "2.0"
     id "com.gradle.plugin-publish" version "0.9.10"
 }
 
+// Ensure that the WPILibVersioningPlugin is setup by setting the release type, if releaseType wasn't
+// already specified on the command line
+if (!hasProperty('releaseType')) {
+    WPILibVersion {
+        releaseType = 'dev'
+    }
+}
+
+ext.pubVersion = ''
+if (project.hasProperty("publishVersion")) {
+    pubVersion = project.publishVersion
+} else {
+    pubVersion = WPILibVersion.version
+}
+
+if (pubVersion == '') {
+    pubVersion = '0.0.1-unknown'
+}
+
 group 'edu.wpi.first'
-version '0.0.4'
+version pubVersion
 
 repositories {
     maven {
@@ -59,6 +79,8 @@ gradlePlugin {
     }
 }
 
+apply from: 'versions.gradle'
+
 task wrapper(type: Wrapper) {
     gradleVersion = '4.7'
 }

versions.gradle

@@ -0,0 +1,55 @@
+def versionFiles = [new File('extension/package.json')]
+def oldVersionFile = new File("$buildDir/existingVersions.json")
+
+task updateVersions(type: Task) {
+    doLast {
+        def existingVersions = []
+
+        versionFiles.each {
+            def file = it
+
+            def parsedJson = new groovy.json.JsonSlurper().parseText(file.text)
+
+            def existingVersion = new Expando();
+            existingVersion.version = parsedJson.version
+
+            existingVersion.file = file.toString()
+
+            existingVersions << existingVersion
+
+            parsedJson.version = pubVersion
+
+            def converted = groovy.json.JsonOutput.prettyPrint(groovy.json.JsonOutput.toJson(parsedJson))
+
+            file.text = converted
+        }
+        if (oldVersionFile.exists()) {
+            return
+        }
+
+            oldVersionFile.parentFile.mkdirs()
+
+            oldVersionFile.text = groovy.json.JsonOutput.prettyPrint(groovy.json.JsonOutput.toJson(existingVersions))
+    }
+}
+
+task resetVersions(type: Task) {
+    doLast {
+        def oldVersions = new groovy.json.JsonSlurper().parseText(oldVersionFile.text)
+        versionFiles.each {
+            def file = it
+
+            def parsedJson = new groovy.json.JsonSlurper().parseText(file.text)
+            for (Object oldv : oldVersions) {
+                if (file.toString().equals(oldv.file)) {
+                    parsedJson.version = oldv.version
+                    break
+                }
+            }
+            def converted = groovy.json.JsonOutput.prettyPrint(groovy.json.JsonOutput.toJson(parsedJson))
+
+            file.text = converted
+        }
+        oldVersionFile.delete()
+    }
+}