Custom material library HELP

[lav...@gmail.com]

Hello everyone, I'm still new to Python. I'm currently working on a material library where materials (aistandard) are created when a folder with textures with correct naming convention are loaded via a file dialog. Tumbnails Appear in the menu ui when created and you can apply them to objects ofcourse.
I don't understand how I can check if the files have the correct name, load them all in with file dialog and apply them to the correct shading node of 1 material. I would appreciate the help a lot!

[Lavux]

This is what I have so far:

import maya.cmds as cmds

from os import listdir

class Material_library():

    def __init__(self):

        UI=cmds.window(title="Material Library", widthHeight =(300,150), s=True)

        cmds.rowColumnLayout(numberOfColumns = 1)

        cmds.button(label= "Select texture folder", command= self.select_folder)

        cmds.separator(h=20)

        

        cmds.showWindow()

                

        

    def select_folder(self, *args):          

        myFilter= "Image Files (*.jpg *.jpeg *.tga *.png *.tiff *.bmp *.psd)"

        self.myDirectory = cmds.fileDialog2(fileFilter=myFilter, dialogStyle=1, fm=3)

        myFiles= listdir(self.myDirectory[0])

                    

        for textures in myFiles:

            fileEndings = ('.psd','.PSD','.jpg','JPG','.jpeg','.JPEG','.tga','.TGA','.png','.PNG','.tiff','.TIFF','.bmp','.BMP')

            if textures.endswith(fileEndings):

                myTexture = textures

                

                shader=cmds.shadingNode("AiStandardSurface",asShader=True)

            else:

                cmds.warning(textures + 'This is not a valid image type')

        print myFiles

        

Material_library()