1 files changed, 54 insertions, 0 deletions
diff --git a/src/main/scala/com/getbootstrap/rorschach/auditing/ModifiedFilesAuditor.scala b/src/main/scala/com/getbootstrap/rorschach/auditing/ModifiedFilesAuditor.scala
new file mode 100644
index 0000000..03dc9fd
--- /dev/null
+++ b/src/main/scala/com/getbootstrap/rorschach/auditing/ModifiedFilesAuditor.scala
@@ -0,0 +1,54 @@
+package com.getbootstrap.rorschach.auditing
+
+object ModifiedFilesAuditor {
+  private implicit class PathString(filepath: String) {
+    def isDist: Boolean = filepath.startsWith("dist/")
+    def isNonMinifiedCss: Boolean = filepath.endsWith(".css") && !filepath.endsWith(".min.css")
+    def isSourceLess: Boolean = filepath.startsWith("less/") && filepath.endsWith(".less")
+    def isNonMinifiedJs: Boolean = filepath.endsWith(".js") && !filepath.endsWith(".min.js")
+    def isDistCss: Boolean = filepath.isDist && filepath.isNonMinifiedCss
+    def isDistJs: Boolean = filepath.isDist && filepath.isNonMinifiedJs
+    def isSourceJs: Boolean = filepath.startsWith("js/") && filepath.isNonMinifiedJs
+  }
+
+  def audit(filepaths: Set[String]): Seq[String] = {
+    Seq(auditCname(filepaths), auditCss(filepaths), auditJs(filepaths)).flatten
+  }
+
+  /**
+   * If dist/bootstrap.css etc. is modified, then less/<*>.less must also have been modified.
+   */
+  private def auditCss(filepaths: Set[String]): Option[String] = {
+    val cssModified = filepaths.exists{ _.isDistCss }
+    val lessModified = filepaths.exists{ _.isSourceLess }
+    if (cssModified && !lessModified) {
+      Some("Changes must be made to the original Less source code, not just the compiled CSS.")
+    }
+    else {
+      None
+    }
+  }
+
+  /**
+   * If dist/js/bootstrap.js etc. is modified, then js/<*>.js must also have been modified.
+   */
+  private def auditJs(filepaths: Set[String]): Option[String] = {
+    val distJsModified = filepaths.exists{ _.isDistJs }
+    val sourceJsModified = filepaths.exists{ _.isSourceJs }
+    if (distJsModified && !sourceJsModified) {
+      Some("Changes must be made to the original JS source code, not just the generated concatenated JS.")
+    }
+    else {
+      None
+    }
+  }
+
+  private def auditCname(filepaths: Set[String]): Option[String] = {
+    if (filepaths.contains("CNAME")) {
+      Some("The CNAME file should never be modified (except in extremely unlikely circumstances).")
+    }
+    else {
+      None
+    }
+  }
+}