Implemented Optimized File Transfer Using Checksums

Optimized File Transfer Using Checksums.py

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+import hashlib
+import os
+import shutil
+
+class OptimizedFileTransfer:
+    def __init__(self):
+        self.transferred_files = []
+
+    def hash_file(self, filepath):
+        """Generate SHA-256 hash for a given file."""
+        try:
+            hasher = hashlib.sha256()
+            with open(filepath, 'rb') as f:
+                while chunk := f.read(8192):
+                    hasher.update(chunk)
+            return hasher.hexdigest()
+        except FileNotFoundError:
+            print(f"File not found: {filepath}")
+            return None
+
+    def transfer_files(self, source_dir, dest_dir):
+        """Transfer files from source to destination based on hash comparison."""
+
+        # Check if source directory exists
+        if not os.path.exists(source_dir):
+            print(f"Source directory not found: {source_dir}")
+            return
+
+        # Create destination directory if it doesn't exist
+        if not os.path.exists(dest_dir):
+            os.makedirs(dest_dir)
+            print(f"Destination directory created: {dest_dir}")
+
+        # Loop through files in source directory
+        for filename in os.listdir(source_dir):
+            src_file = os.path.join(source_dir, filename)
+            dest_file = os.path.join(dest_dir, filename)
+
+            print(f"Processing file: {src_file}")  # Debug statement
+
+            src_hash = self.hash_file(src_file)
+            dest_hash = self.hash_file(dest_file) if os.path.exists(dest_file) else None
+
+            print(f"Source hash: {src_hash}, Destination hash: {dest_hash}")  # Debug statement
+
+            if src_hash and src_hash != dest_hash:
+                shutil.copy2(src_file, dest_file)
+                self.transferred_files.append(filename)
+                print(f"Transferred file: {filename}")
+            else:
+                print(f"File unchanged: {filename}")
+
+    def get_transferred_files(self):
+        """Return the list of transferred files."""
+        return self.transferred_files
+
+# Test Cases
+file_transfer = OptimizedFileTransfer()
+
+# Use the absolute paths for your directories here
+source_directory = "C:/Users/ASUS/Desktop/Rsp/AI-ML-DL-Hacktoberfest2024-WB/source_folder"
+destination_directory = "C:/Users/ASUS/Desktop/Rsp/AI-ML-DL-Hacktoberfest2024-WB/destination_folder"
+
+# Transfer files and handle directories
+file_transfer.transfer_files(source_directory, destination_directory)
+
+# List transferred files
+print("Transferred Files:", file_transfer.get_transferred_files())