Refactor readFiles method to handle file content processing and return structured response with serial numbers and remaining rows

app/Http/Controllers/SapFileController.php

@@ -125,16 +125,18 @@ class SapFileController extends Controller
         $filePath = $path . '/' . $fileName;
 
         $lines = file($filePath, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
+        $headerLine = array_shift($lines); // removes first line
+
         if (!$lines) {
             return response()->json(['status' => 'ERROR', 'message' => 'File is empty'], 400);
         }
 
         // Debug: return first 5 lines to check reading
-        return response()->json([
+        // return response()->json([
-            'status' => 'DEBUG_LINES',
+        //     'status' => 'DEBUG_LINES',
-            'file' => $fileName,
+        //     'file' => $fileName,
-            'lines_sample' => array_slice($lines, 0, 5) // first 5 lines
+        //     'lines_sample' => array_slice($lines, 0, 5) // first 5 lines
-        ]);
+        // ]);
 
         if (!file_exists($filePath) || !is_readable($filePath)) {
             return response()->json([
@@ -143,31 +145,62 @@ class SapFileController extends Controller
             ], 500);
         }
 
-        $table = 'class_characteristics';
+        // $table = 'class_characteristics';
-        $columns = Schema::getColumnListing($table); // returns lowercase column names
+        // $columns = Schema::getColumnListing($table); // returns lowercase column names
 
-        $rows = [];
+        // $rows = [];
-        foreach ($lines as $line) {
+        // foreach ($lines as $line) {
-            $values = str_getcsv($line); // split by comma
+        //     $values = str_getcsv($line); // split by comma
 
-            $row = [];
+        //     $row = [];
-            foreach ($columns as $index => $column) {
+        //     foreach ($columns as $index => $column) {
-                $value = $values[$index] ?? null;  // if missing, set null
+        //         $value = $values[$index] ?? null;  // if missing, set null
-                if ($value === '') $value = null;   // empty string -> null
+        //         if ($value === '') $value = null;   // empty string -> null
-                $row[$column] = $value;
+        //         $row[$column] = $value;
-            }
+        //     }
+
+        //     $rows[] = $row;
+        // }
+
+        // return response()->json([
+        //     'status' => 'DEBUG_ROWS',
+        //     'rows_sample' => array_slice($rows, 0, 5),
+        // ]);
 
-            $rows[] = $row;
-        }
 
           // Insert into database
-        foreach ($rows as $row) {
+        // foreach ($rows as $row) {
-            \App\Models\ClassCharacteristic::create($row);
+        //     \App\Models\ClassCharacteristic::create($row);
+        // }
+
+        // return response()->json([
+        //     'status' => 'SUCCESS',
+        //     'rows_imported' => count($rows),
+        // ]);
+        // Remove header row
+        $headerLine = array_shift($lines);
+
+        // Prepare arrays
+        $serialNumbers = [];
+        $remainingRows = [];
+
+        foreach ($lines as $line) {
+            $values = str_getcsv($line);
+
+            // Serial number is 6th column (index 5)
+            $serialNumbers[] = $values[5] ?? null;
+
+            // Remove the serial number column and keep remaining
+            $remainingRow = $values;
+            unset($remainingRow[5]);
+            $remainingRow = array_values($remainingRow); // reindex array
+            $remainingRows[] = $remainingRow;
         }
 
         return response()->json([
             'status' => 'SUCCESS',
-            'rows_imported' => count($rows),
+            'serial_numbers' => $serialNumbers,
+            'remaining_rows' => $remainingRows,
         ]);
     }