⚡ Version > Only send differences line index

lib/file.js

@@ -42,22 +42,28 @@ class File
         version.date = new Date()
         version.content = content
 
+        // First version
         if(!lastVersion)
         {
-            version.diff = false
+            version.addedLines = []
+            version.removedLines = []
         }
+        // No content
         else if(version.content === '')
         {
-            version.diff = [{ count: 1, added: true, removed: undefined, value: 'a' }]
+            version.addedLines = []
+            version.removedLines = []
 
+            // Don't save if last version had no content too
             if(lastVersion.content === '')
             {
                 return false
             }
         }
+        // Content
         else
         {
-            version.diff = diff.diffLines(
+            const differences = diff.diffLines(
                 lastVersion.content,
                 version.content,
                 {
@@ -65,8 +71,68 @@ class File
                 }
             )
 
+            // Set added lines
+            version.addedLines = []
+
+            let lineProgress = 0
+
+            // Added lines and unchanged lines
+            for(const differenceKey in differences)
+            {
+                const difference = differences[differenceKey]
+                let lineBreaks = (difference.value.match(/\n/g) || []).length
+
+                if(parseInt(differenceKey) === differences.length - 1)
+                {
+                    lineBreaks += 1
+                }
+
+                if(difference.added)
+                {
+                    for(let i = 0; i < lineBreaks; i++)
+                    {
+                        version.addedLines.push(lineProgress + i)
+                    }
+                }
+
+                if(!difference.removed)
+                {
+                    lineProgress += lineBreaks
+                }
+            }
+
+            // Set removed lines
+            version.removedLines = []
+
+            lineProgress = 0
+
+            // Removed lines
+            for(const differenceKey in differences)
+            {
+                const difference = differences[differenceKey]
+                let lineBreaks = (difference.value.match(/\n/g) || []).length
+
+                if(parseInt(differenceKey) === differences.length - 1)
+                {
+                    lineBreaks += 1
+                }
+
+                if(difference.removed)
+                {
+                    if(version.addedLines.indexOf(lineProgress) === -1 && version.addedLines.indexOf(lineProgress + 1) === -1)
+                    {
+                        version.removedLines.push(lineProgress)
+                    }
+                }
+
+                if(!difference.removed)
+                {
+                    lineProgress += lineBreaks
+                }
+            }
+
             // No changed
-            if(version.diff.length === 1 && lastVersion.content !== '')
+            if(differences.length === 1 && lastVersion.content !== '')
             {
                 return false
             }