Develop a program for searching for certain words in the photo and in the text

It is necessary to write a program that would perform the following functionality:
There is a directory in which files are written all the time, these files are sorted into folders, the names of which mean the type of file inside. In the program window there should be the ability to select the directory from which you want to view (I attach an approximate interface of the program).
The program should search among all files for images and text documents and search in them for words and small templates that the user sets. If a word is found, the file in which it was found should open on top of all windows.
You must use OpenCV to work with images, you can tesseract ocr to extract, you can use any other program.