feat: apex full file diff

Author: shaurabh-tiwari-git

src/migration/related/ApexMigration.ts

@@ -155,7 +155,7 @@ export class ApexMigration extends BaseRelatedObjectMigration {
       } else {
         Logger.logger.info(assessMessages.getMessage('apexFileChangesIdentifiedNotApplied', [file.name]));
       }
-      difference = new FileDiffUtil().getFileDiff(file.name, fileContent, updatedContent);
+      difference = new FileDiffUtil().getFullFileDiff(file.name, fileContent, updatedContent);
     }
     if (updateMessages.length === 0) {
       Logger.info(assessMessages.getMessage('fileNoOmnistudioCalls', [file.name]));

src/styles/reportGenerator.css

@@ -256,28 +256,30 @@ html {
   background-color: #fff;
   margin: auto;
   padding: 20px;
+  padding-top: 20px;
   width: 60%;
-  height: 60%;
+  max-height: 80%;
   box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
   border-radius: 4px;
   text-align: left;
   position: relative;
+  overflow-y: auto;
+  overflow-x: auto;
 }
 
 .closeButton {
   color: #222121;
-  height: 30px;
-  width: 30px;
+  height: 40px;
+  width: 40px;
   position: absolute;
-  background-color: #fff;
-  top: -35px;
-  right: 0;
-  font-size: 25px;
+  top: 0px;
+  right: 0px;
+  font-size: 30px;
   cursor: pointer;
   display: flex;
   align-items: center;
   justify-content: center;
-  border-radius: 3px;
+  z-index: 1050;
 }
 
 .modalHeader {

src/utils/lwcparser/fileutils/FileDiffUtil.ts

@@ -116,6 +116,78 @@ export class FileDiffUtil {
     }
   }
 
+  public getFullFileDiff(filename: string, originalFileContent: string, modifiedFileContent: string): DiffPair[] {
+    const originalLines = originalFileContent.split('\n');
+    const modifiedLines = modifiedFileContent.split('\n');
+    const patch: string = createPatch('', originalFileContent, modifiedFileContent);
+    const patchLines = patch.split('\n');
+
+    let origIdx = 0;
+    let modIdx = 0;
+    const result: DiffPair[] = [];
+
+    // Skip the first line of the patch (the file header)
+    let i = 0;
+    while (i < patchLines.length) {
+      const line = patchLines[i];
+      const hunkHeader = /^@@ -(\d+),?(\d*) \+(\d+),?(\d*) @@/;
+      const match = hunkHeader.exec(line);
+
+      if (match) {
+        // Move to the start of the hunk
+        const origStart = parseInt(match[1], 10) - 1;
+        const modStart = parseInt(match[3], 10) - 1;
+
+        // Emit unchanged lines before the hunk
+        while (origIdx < origStart && modIdx < modStart) {
+          result.push({ old: originalLines[origIdx], new: modifiedLines[modIdx] });
+          origIdx++;
+          modIdx++;
+        }
+
+        i++;
+        // Now process the hunk lines
+        while (i < patchLines.length && !patchLines[i].startsWith('@@')) {
+          const hunkLine = patchLines[i];
+          if (hunkLine.startsWith('-')) {
+            result.push({ old: originalLines[origIdx], new: null });
+            origIdx++;
+          } else if (hunkLine.startsWith('+')) {
+            result.push({ old: null, new: modifiedLines[modIdx] });
+            modIdx++;
+          } else if (hunkLine.startsWith(' ')) {
+            result.push({ old: originalLines[origIdx], new: modifiedLines[modIdx] });
+            origIdx++;
+            modIdx++;
+          }
+          i++;
+        }
+      } else {
+        i++;
+      }
+    }
+
+    // Emit any remaining unchanged lines at the end
+    while (origIdx < originalLines.length && modIdx < modifiedLines.length) {
+      result.push({ old: originalLines[origIdx], new: modifiedLines[modIdx] });
+      origIdx++;
+      modIdx++;
+    }
+    // If there are trailing additions or deletions
+    while (origIdx < originalLines.length) {
+      result.push({ old: originalLines[origIdx], new: null });
+      origIdx++;
+    }
+    while (modIdx < modifiedLines.length) {
+      result.push({ old: null, new: modifiedLines[modIdx] });
+      modIdx++;
+    }
+
+    // Only return if there are any changes
+    const hasChanges = result.some((diff) => diff.old !== diff.new);
+    return hasChanges ? result : [];
+  }
+
   escapeHtml(text: string): string {
     return text.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/"/g, '&quot;').replace(/'/g, '&#039;');
   }