fix: wrong video path (#162)

rewrite extrapolateBaseFolder function

lib/enhanceReport.js

@@ -158,19 +158,24 @@ function encodeMediaPath(p) {
 }
 
 function extrapolateBaseFolder(results) {
-  //Snatched from https://rosettacode.org/wiki/Find_common_directory_path#JavaScript
-  const splitStrings = (a, sep = path.sep) => a.map((i) => i.split(sep));
-  const elAt = (i) => (a) => a[i];
-  const rotate = (a) => a[0].map((e, i) => a.map(elAt(i)));
   const allElementsEqual = (arr) => arr.every((e) => e === arr[0]);
-  const commonPath = (input, sep = path.sep) =>
-    rotate(splitStrings(input, sep)).filter(allElementsEqual).map(elAt(0)).join(sep);
+  const directoryArrays = results.map((result) =>
+      path.dirname(result.fullFile).split(path.sep)
+  );
+  const minLength = Math.min(...directoryArrays.map((arr) => arr.length));
+  let commonPathArray = [];
 
-  let directoryArray = [];
-  results.forEach((result) => {
-    directoryArray = directoryArray.concat(path.dirname(result.fullFile));
-  });
-  const baseFolder = commonPath(directoryArray);
+  for (let i = 0; i < minLength; i++) {
+    const elementsAtCurrentIndex = directoryArrays.map((arr) => arr[i]);
+
+    if (allElementsEqual(elementsAtCurrentIndex)) {
+      commonPathArray.push(elementsAtCurrentIndex[0]);
+    } else {
+      break;
+    }
+  }
+
+  const baseFolder = commonPathArray.join(path.sep);
   debugLog(`baseFolder: ${baseFolder}`);
   return baseFolder;
 }