cantThinkOfName.py

import bpy
# make sure to append shader first or uncomment the following lines and change path

# with bpy.data.libraries.load(
#     "D:\Xodd\Blender-miHoYo-Shaders\miHoYo - Genshin Impact.blend"
# ) as (data_from, data_to):
#     data_to.materials = data_from.materials

def findDressMaterialName(matName):
    for material in bpy.data.materials:
        if matName in material.name:
            x = material.node_tree.nodes['Principled BSDF'].inputs['Base Color'].links[0].from_node.image.name_full
            #split reverse string ]
            #print(x)
            return x.replace('Tex_',"").split('_')[::-1][1]

        
    else:
        pass
    
# deselect all
bpy.ops.object.select_all(action='DESELECT')
# set body to active 
bpy.context.view_layer.objects.active = bpy.data.objects["Body"]
#select body
bpy.data.objects["Body"].select_set(state=True, view_layer=None)
meshes = ["Body", "EyeStar", "EffectMesh"]
# select anything thats not Body , EyeStar,EffectMesh
for object in bpy.context.scene.objects:
    if not object.name in meshes and object.type == "MESH":
        object.select_set(state=True, view_layer=None)
        #join mesh
bpy.ops.object.join()

    # link materials 
try:
    for object in bpy.data.objects:
        name = object.name
        if "Body" in name:
            for materialSlot in object.material_slots:
                if "Body" in materialSlot.name:
                    materialSlot.material = bpy.data.materials["miHoYo - Genshin Body"]
                elif "Face" in materialSlot.name:
                    materialSlot.material = bpy.data.materials["miHoYo - Genshin Face"]
                elif "Hair" in materialSlot.name:
                    materialSlot.material = bpy.data.materials["miHoYo - Genshin Hair"]
                elif "Dress" in materialSlot.name:#is it Body or Hair i have no idea
                    matName = materialSlot.name.split('_')[-1]
                    materialSlot.material = bpy.data.materials["miHoYo - Genshin " + findDressMaterialName(matName)]
        
        else:
            pass
except Exception as e:
     print("MAKE SURE TO APPEND FILE FIRST\n")
     raise
     # select all empty objects
bpy.ops.object.select_by_type(type="EMPTY")
if 'Face Light Direction' in bpy.data.objects:
     bpy.data.objects['Face Light Direction'].select_set(state=False,view_layer=None)
if 'Head Driver' in bpy.data.objects:
     bpy.data.objects['Head Driver'].select_set(state=False,view_layer=None)
if 'Main Light Direction' in bpy.data.objects:
     bpy.data.objects['Main Light Direction'].select_set(state=False,view_layer=None)
if 'Head Forward' in bpy.data.objects:
     bpy.data.objects['Head Forward'].select_set(state=False,view_layer=None)
if 'Head Up' in bpy.data.objects:
     bpy.data.objects['Head Up'].select_set(state=False,view_layer=None)
     
    
    
# delete them
bpy.ops.object.delete()

    #hides EyeStar and EffectMesh
if 'EffectMesh' in bpy.data.objects:
    bpy.data.objects['EffectMesh'].hide_set(True)
if 'EyeStar' in bpy.data.objects:
    bpy.data.objects['EyeStar'].hide_set(True)
    
#run genshin texture import script , uncomment the lines if u dont want to manually run file and change path
#bpy.ops.script.python_file_run(filepath="D:\Xodd\Blender-miHoYo-Shaders\scripts\genshin-import-linear.py")

#set view transform to standard
bpy.context.scene.view_settings.view_transform = 'Standard'
#rotate it (not sure about the values yet)
bpy.ops.object.select_all(action='DESELECT')
for object in bpy.data.objects:
    if object.type == 'ARMATURE':
        print(object.name)
        object.select_set(state=True)
bpy.ops.transform.rotate(value=1.5708, orient_axis='X', orient_type='GLOBAL', orient_matrix=((1, 0, 0), (0, 1, 0), (0, 0, 1)), orient_matrix_type='GLOBAL', constraint_axis=(True, False, False), mirror=False, use_proportional_edit=False, proportional_edit_falloff='SMOOTH', proportional_size=1, use_proportional_connected=False, use_proportional_projected=False)