class DuplicateImagesController:
""" Controller for 'Duplicate image finder' application.
Implements the 'Controller' from MVC design pattern.
"""
def __init__(self):
supported_image_formats = ('.png', '.jpg', '.jpeg', '.bmp', '.gif')
start_scan_callback = lambda scan_directories: self._start_scan_click_callback(
scan_directories)
delete_image_callback = lambda path_to_delete: self._delete_file(
path_to_delete)
delete_all_duplicates = lambda duplicates: self._delete_all_duplicated_keep_newest(
duplicates)
self._main_view = MainView(start_scan_callback, delete_image_callback,
delete_all_duplicates)
self._imageManager = DuplicateImagesManager(supported_image_formats)
def Start(self) -> None:
self._main_view.Init()
def _start_scan_click_callback(self, scan_directories: [str]) -> None:
""" Handler method for click on 'start scan' button.
"""
core.log_debug(
'DuplicateImagesController - starting scan on dirs [%s]' %
(scan_directories))
self._main_view.ShowScanInProgressWindow()
scan_start_time = datetime.now()
self._imageManager.CleanResults()
self._imageManager.ScanDirectories(scan_directories)
duplicates = self._imageManager.GetDuplicates()
scan_end_time = datetime.now()
scan_duration_in_secs = (scan_end_time -
scan_start_time).total_seconds()
core.log_debug(
'DuplicateImagesController - Scan duration in secs is [%d]' %
scan_duration_in_secs)
self._main_view.ShowResultsWindows(duplicates)
def _delete_file(self, file_path):
try:
core.log_debug('DuplicateImagesController - deleting file [%s]' %
(file_path))
os.remove(file_path)
except Exception as e:
core.log_error(
'DuplicateImagesController - delete file [%s] failed with exception [%s]'
% (file_path, e))
def _delete_all_duplicated_keep_newest(
self, duplicates: FileMetaDataList) -> FileMetaDataList:
updated_duplicate_list = []
for duplicate_file_list in duplicates:
newest_file = self._get_newest_file(duplicate_file_list)
for file in duplicate_file_list:
if file.GetPath() == newest_file.GetPath():
continue
else:
self._delete_file(file.GetPath())
updated_duplicate_list.append([newest_file])
return updated_duplicate_list
def _get_newest_file(self, files: FileMetaDataList):
return max(files, key=lambda file: file.GetLastEditTime())
