# BAKE MATERIAL TO TEXTURE SCRIPT
#  Bakes all materials of an object into image textures (to use in other programs)
#  Will only bake a material if an image node is present in the green texture group
#  If no image is present, a low resolution failsafe image will be baked to account for 
#      fully opaque or transparent materials that don't rely on a texture file
#  If there are multiple image resolutions, only the highest resolution be baked
#  Materials are baked to an 8-bit PNG with an alpha channel.
#  (optional) Creates a copy of the model and generates a material atlas to the copy

# Notes:
# - This script deletes all camera objects in the scene
# - fillerplane driver + shader code taken from https://blenderartists.org/t/scripts-create-camera-image-plane/580839
# - material combiner code taken from https://github.com/Grim-es/material-combiner-addon/


import bpy, os, traceback, time, pathlib, subprocess
from .. import common as c
from ..interface.dictionary_en import t

def print_memory_usage(stri):
    run = subprocess.run('wmic OS get FreePhysicalMemory', capture_output=True)
    c.kklog((stri, '\n   mem usage ', 16000 - int(run.stdout.split(b'\r')[2].split(b'\n')[1])/1000))

#setup and return a camera
def setup_camera():
    #Delete all cameras in the scene
    for obj in bpy.context.scene.objects:
        if obj.type == 'CAMERA':
            obj.select_set(True)
        else:
            obj.select_set(False)
    bpy.ops.object.delete()
    for block in bpy.data.cameras:
        if block.users == 0:
            bpy.data.cameras.remove(block)
   
    #Add a new camera
    bpy.ops.object.camera_add(enter_editmode=False, align='VIEW', location=(0, 0, 1), rotation=(0, 0, 0))
    #save it for later
    camera = bpy.context.active_object
    #and set it as the active one
    bpy.context.scene.camera=camera
    #Set camera to orthographic
    bpy.data.cameras[camera.name].type='ORTHO'
    bpy.data.cameras[camera.name].ortho_scale=6
    bpy.context.scene.render.pixel_aspect_y=1
    bpy.context.scene.render.pixel_aspect_x=1
    return camera

def setup_geometry_nodes_and_fillerplane(camera: bpy.types.Object):
    object_to_bake = bpy.context.active_object

    #create fillerplane
    bpy.ops.mesh.primitive_plane_add()
    bpy.ops.object.material_slot_add()
    fillerplane = bpy.context.active_object
    fillerplane.data.uv_layers[0].name = 'uv_main'
    fillerplane.name = "fillerplane"
    bpy.ops.object.editmode_toggle()
    bpy.ops.mesh.select_all(action='SELECT')
    bpy.ops.transform.resize(value=(0.5,0.5,0.5))
    bpy.ops.uv.reset()
    bpy.ops.object.editmode_toggle()

    fillerplane.location = (0,0,-0.0001)

    def setup_driver_variables(driver, camera):
        cam_ortho_scale = driver.variables.new()
        cam_ortho_scale.name = 'cOS'
        cam_ortho_scale.type = 'SINGLE_PROP'
        cam_ortho_scale.targets[0].id_type = 'CAMERA'
        cam_ortho_scale.targets[0].id = bpy.data.cameras[camera.name]
        cam_ortho_scale.targets[0].data_path = 'ortho_scale'
        resolution_x = driver.variables.new()
        resolution_x.name = 'r_x'
        resolution_x.type = 'SINGLE_PROP'
        resolution_x.targets[0].id_type = 'SCENE'
        resolution_x.targets[0].id = bpy.context.scene
        resolution_x.targets[0].data_path = 'render.resolution_x'
        resolution_y = driver.variables.new()
        resolution_y.name = 'r_y'
        resolution_y.type = 'SINGLE_PROP'
        resolution_y.targets[0].id_type = 'SCENE'
        resolution_y.targets[0].id = bpy.context.scene
        resolution_y.targets[0].data_path = 'render.resolution_y'
    
    #setup X scale for bake object and plane
    driver = object_to_bake.driver_add('scale',0).driver
    driver.type = 'SCRIPTED'
    setup_driver_variables(driver, camera)
    driver.expression = "((r_x)/(r_y)*(cOS)) if (((r_x)/(r_y)) < 1) else (cOS)"

    driver = fillerplane.driver_add('scale',0).driver
    driver.type = 'SCRIPTED'
    setup_driver_variables(driver, camera)
    driver.expression = "((r_x)/(r_y)*(cOS)) if (((r_x)/(r_y)) < 1) else (cOS)"

    #setup drivers for object's Y scale
    driver = object_to_bake.driver_add('scale',1).driver
    driver.type = 'SCRIPTED'
    setup_driver_variables(driver, camera)
    driver.expression = "((r_y)/(r_x)*(cOS)) if (((r_y)/(r_x)) < 1) else (cOS)"

    driver = fillerplane.driver_add('scale',1).driver
    driver.type = 'SCRIPTED'
    setup_driver_variables(driver, camera)
    driver.expression = "((r_y)/(r_x)*(cOS)) if (((r_y)/(r_x)) < 1) else (cOS)"

    ###########################
    #import the premade flattener node to unwrap the mesh into the UV structure
    c.import_from_library_file('NodeTree', ['.Geometry Nodes'])

    #give the object a geometry node modifier
    geonodes_mod = object_to_bake.modifiers.new('Flattener', 'NODES')
    geonodes_mod.node_group = bpy.data.node_groups['.Geometry Nodes']
    identifier = [str(i) for i in geonodes_mod.keys()][0]
    geonodes_mod[identifier+'_attribute_name'] = 'uv_main'
    geonodes_mod[identifier+'_use_attribute'] = True

    #Make the originally selected object active again
    c.switch(object_to_bake, 'OBJECT')

##############################
#Changes the material of the image plane to the material of the object,
# and then puts a render of the image plane into the specified folder

def sanitizeMaterialName(text: str) -> str:
    '''Mat names need to be sanitized else you can't delete the files with windows explorer'''
    for ch in ['\\','`','*','<','>','.',':','?','|','/','\"']:
        if ch in text:
            text = text.replace(ch,'')
    return text

def bake_pass(folderpath: str, bake_type: str):
    '''Folds the body / clothes / hair down to a UV rectangle
    Places a filler plane right below it to fill in the rest of the image
    Bakes all materials on this object down to an image using the orthographic camera
    '''
    #get the currently selected object as the active object
    object_to_bake = bpy.context.active_object
    #remember what order the materials are in for later
    original_material_order = []
    for matslot in object_to_bake.material_slots:
        original_material_order.append(matslot.name)

    #if this is a light or dark pass, make sure the color output is a constant light or dark
    combine = bpy.data.node_groups['.Combine colors']
    combine.links.remove(combine.nodes['mix'].inputs[0].links[0])
    combine.nodes['mix'].inputs[0].default_value = 1 if bake_type == 'light' else 0

    #go through each material slot
    for index, current_material in enumerate(object_to_bake.data.materials):
        #Don't bake this material if it doesn't have the bake tag
        if not current_material.get('bake'):
            c.kklog(f'Detected material that cannot be finalized. Skipping: {current_material.name}')
            continue

        nodes = current_material.node_tree.nodes
        links = current_material.node_tree.links
        
        #Turn off the normals for the toon_shading shading node group input if this isn't a normal pass
        if nodes.get('textures') and bake_type != 'normal':
            toon_shading = nodes.get('textures').node_tree.nodes.get('shade')
            if toon_shading:
                original_normal_state = toon_shading.inputs[1].default_value
                toon_shading.inputs[1].default_value = 0

        #if this is a normal pass, attach the normal passthrough to the output
        elif nodes.get('textures') and bake_type == 'normal':
            if len(nodes['textures'].outputs):
                links.remove(nodes['out'].inputs[0].links[0])
                links.new(nodes['textures'].outputs[-1], nodes['out'].inputs[0])
        
        if nodes.get('textures'):
            #Go through each of the textures loaded into the textures group and get the highest resolution one
            highest_resolution = [0, 0]
            for image_node in nodes['textures'].node_tree.nodes:
                if image_node.type == 'TEX_IMAGE' and image_node.image:
                    image_size = image_node.image.size[0] * image_node.image.size[1]
                    largest_so_far = highest_resolution[0] * highest_resolution[1]
                    if image_size > largest_so_far:
                        highest_resolution = image_node.image.size
            
            resolution_multiplier = bpy.context.scene.kkbp.bake_mult
            #Render an image using the highest dimensions
            if highest_resolution:
                bpy.context.scene.render.resolution_x=highest_resolution[0] * resolution_multiplier
                bpy.context.scene.render.resolution_y=highest_resolution[1] * resolution_multiplier
            else:
                #if no images were found, render a 64px failsafe image anyway to catch 
                # materials that are a solid color, don't rely on textures, or are completely transparent
                bpy.context.scene.render.resolution_x=64
                bpy.context.scene.render.resolution_y=64

            #set every material slot except the current material to be transparent
            for matslot in object_to_bake.material_slots:
                if matslot.material != current_material:
                    matslot.material = bpy.data.materials['KK Eyeline kage ' + c.get_name()]
            
            #set the filler plane to the current material
            bpy.data.objects['fillerplane'].material_slots[0].material = current_material

            #then render it
            matname = sanitizeMaterialName(current_material.name)
            matname = matname[:-4] if matname[-4:] == '-ORG' else matname
            bpy.context.scene.render.filepath = folderpath + matname + ' ' + bake_type
            bpy.context.scene.render.image_settings.file_format='PNG'
            bpy.context.scene.render.image_settings.color_mode='RGBA'
            
            print('Rendering {} / {}'.format(index+1, len(object_to_bake.data.materials)))
            bpy.ops.render.render(write_still = True)

            #reset folderpath after render
            bpy.context.scene.render.filepath = folderpath
            
        #Restore the value in the toon_shading shading node group for the normals
        if nodes.get('textures') and bake_type != 'normal':
            toon_shading = nodes.get('textures').node_tree.nodes.get('shade')
            if toon_shading:
                toon_shading.inputs[1].default_value = original_normal_state
        
        #Restore the links if they were edited for the normal pass
        elif nodes.get('textures') and bake_type == 'normal':
            if len(nodes['textures'].outputs):
                links.remove(nodes['out'].inputs[0].links[0])
                links.new(nodes['combine'].outputs[0], nodes['out'].inputs[0])

        #reset material slots to their original order
        for material_index in range(len(original_material_order)):
            object_to_bake.material_slots[material_index].material = bpy.data.materials[original_material_order[material_index]]
    
    #reset the color output group link
    combine = bpy.data.node_groups['.Combine colors']
    combine.links.new(combine.nodes['input'].outputs[2], combine.nodes['mix'].inputs[0])

def cleanup():
    # Deselect all objects
    bpy.ops.object.select_all(action='DESELECT')
    #Select the camera
    for camera in [o for o in bpy.data.objects if o.type == 'CAMERA']:
        bpy.data.objects.remove(camera)
    #Select fillerplane
    for fillerplane in [o for o in bpy.data.objects if 'fillerplane' in o.name]:
        bpy.data.objects.remove(fillerplane)
    #delete orphan data
    for block in bpy.data.meshes:
        if block.users == 0:
            bpy.data.meshes.remove(block)
    for block in bpy.data.cameras:
        if block.users == 0:
            bpy.data.cameras.remove(block)
    for ob in [obj for obj in bpy.context.view_layer.objects if obj and obj.type == 'MESH']:
        #delete the geometry modifier
        if ob.modifiers.get('Flattener'):
            ob.modifiers.remove(ob.modifiers['Flattener'])
            #delete the two scale drivers
            ob.animation_data.drivers.remove(ob.animation_data.drivers[0])
            ob.animation_data.drivers.remove(ob.animation_data.drivers[0])
            ob.scale = (1,1,1)
    bpy.data.node_groups.remove(bpy.data.node_groups['.Geometry Nodes'])

def replace_all_baked_materials(folderpath: str, bake_object: bpy.types.Object):
    #load all baked images into blender
    fileList = pathlib.Path(folderpath).glob('*.png')
    files = [file for file in fileList if file.is_file()]
    for file in files:
        try:
            image = bpy.data.images.load(filepath=str(file))
            image.pack()
            #if there was an older version of this image, get rid of it
            if image.name[-4:] == '.001':
                if bpy.data.images.get(image.name[:-4]):
                    bpy.data.images[image.name[:-4]].user_remap(image)
                    bpy.data.images.remove(bpy.data.images[image.name[:-4]])
                    image.name = image.name[:-4]
        except:
            c.kklog(f'Could not load in file because the name exceeds 64 characters: {file}')
    
    #now all needed images are loaded into the file. Match each material to it's image textures
    for bake_type in ['light', 'dark', 'normal']:
        for mat in bake_object.material_slots:
            image = bpy.data.images.get(mat.material.name.replace('-ORG', '') + f' {bake_type}.png', '')
            if image:
                #the simplified material already exists and is loaded into the material slot, so just load in the image
                if mat.material.get('simple'):
                    simple = mat.material
                    textures_group = simple.node_tree.nodes['textures'].node_tree
                    textures_group.nodes[bake_type].image = image

                #the simplified material already exists, but the user swapped it back to the -ORG version to rebake it, 
                # so load the material back into the material slot and load in the image
                elif mat.material.get('bake') and '-ORG' in mat.material.name and bpy.data.materials.get(mat.material.name.replace('-ORG','')):
                    simple = bpy.data.materials[mat.material.name.replace('-ORG','')]
                    mat.material = simple
                    textures_group = simple.node_tree.nodes['textures'].node_tree
                    print(mat.material.name)
                    textures_group.nodes[bake_type].image = image

                #check if a simplified version of this material exists yet. If it doesn't, create it
                elif mat.material.get('bake'):
                    #rename the original material to "material_name-ORG" and create the simplified material
                    mat.material.name += '-ORG'
                    try:
                        simple = bpy.data.materials['KK Simple'].copy()
                    except:
                        c.import_from_library_file('Material', ['KK Simple'], use_fake_user = False)
                        simple = bpy.data.materials['KK Simple'].copy()
                    simple.name = mat.material.name.replace('-ORG', '')
                    textures_group = simple.node_tree.nodes['textures'].node_tree.copy()
                    textures_group.name = simple.name
                    simple.node_tree.nodes['textures'].node_tree = textures_group
                    textures_group.nodes[bake_type].image = image
                    # you have the ability to only bake the light textures, but it looks weird if there is no dark texture to go along with it, 
                    # put the light image into the dark slot. it will be overwritten if the dark texture exists on the next loop
                    if bake_type == 'light':
                        textures_group.nodes['dark'].image = image

                    #and then replace the original material with this new simplified one
                    mat.material.use_fake_user = True
                    def replace_mat():
                        if bpy.app.version[0] > 3:
                            blend_method = mat.material.surface_render_method
                            mat.material = simple
                            mat.material.surface_render_method = blend_method
                            mat.material.use_transparency_overlap = True if ('KK Eyewhites (sirome) ' + c.get_name() in mat.name) else False
                        else:
                            blend_method = mat.material.blend_method
                            mat.material = simple
                            mat.material.blend_method = blend_method
                            mat.material.show_transparent_back = False
                        simple['simple'] = True
                    replace_mat()

                    #load the Eevee Mod simple shader if using Eevee Mod
                    if bpy.context.scene.kkbp.shader_dropdown == 'C':
                        try:
                            simple = bpy.data.node_groups['.Simple Shader (Eevee Mod)'].copy()
                        except:
                            c.import_from_library_file('NodeTree', ['.Simple Shader (Eevee Mod)'], use_fake_user = False)
                            simple = bpy.data.node_groups['.Simple Shader (Eevee Mod)'].copy()
                        #and then replace the original material with this new simplified one
                        mat.material.use_fake_user = True
                        replace_mat()

def create_material_atlas(folderpath: str):
    '''Merges all the finalized material png files into a single atlas file, copies the current model and applies the atlas to the copy'''
    # https://blender.stackexchange.com/questions/127403/change-active-collection
    #Recursivly transverse layer_collection for a particular name
    def recurLayerCollection(layerColl, collName):
        found = None
        if (layerColl.name == collName):
            return layerColl
        for layer in layerColl.children:
            found = recurLayerCollection(layer, collName)
            if found:
                return found
    
    def remove_orphan_data():
        #revert the image back from the atlas file to the baked file   
        for mat in bpy.data.materials:
            if mat.name[-4:] == '-ORG':
                simplified_name = mat.name[:-4]
                if bpy.data.materials.get(simplified_name):
                    simplified_mat = bpy.data.materials[simplified_name]
                    for bake_type in ['light', 'dark', 'normal']:
                        simplified_mat.node_tree.nodes['textures'].node_tree.nodes[bake_type].image = bpy.data.images.get(simplified_name + ' ' + bake_type + '.png')
        #delete orphan data
        for cat in [bpy.data.armatures, bpy.data.objects, bpy.data.meshes, bpy.data.materials, bpy.data.images, bpy.data.node_groups]:
            for block in cat:
                if block.users == 0:
                    cat.remove(block)

    if bpy.data.collections.get(c.get_name() + ' atlas'):
        c.kklog(f'deleting previous collection "{c.get_name()} atlas" and regenerating atlas model...')
        def del_collection(coll):
            for c in coll.children:
                del_collection(c)
            bpy.data.collections.remove(coll,do_unlink=True)
        del_collection(bpy.data.collections[c.get_name() + ' atlas'])
        remove_orphan_data()
        #show the original collection again
        c.show_layer_collection(c.get_name(), False)

    #Change the Active LayerCollection to the character collection
    layer_collection = bpy.context.view_layer.layer_collection
    layerColl = recurLayerCollection(layer_collection, c.get_name())
    bpy.context.view_layer.active_layer_collection = layerColl

    # https://blender.stackexchange.com/questions/157828/how-to-duplicate-a-certain-collection-using-python
    from collections import  defaultdict
    def copy_objects(from_col, to_col, linked, dupe_lut):
        for o in from_col.objects:
            dupe = o.copy()
            if not linked and o.data:
                dupe.data = dupe.data.copy()
            to_col.objects.link(dupe)
            dupe_lut[o] = dupe
    def copy(parent, collection, linked=False):
        dupe_lut = defaultdict(lambda : None)
        def _copy(parent, collection, linked=False):
            cc = bpy.data.collections.new(collection.name)
            copy_objects(collection, cc, linked, dupe_lut)
            for c in collection.children:
                _copy(cc, c, linked)
            parent.children.link(cc)
            return cc
        the_copy = _copy(parent, collection, linked)
        for o, dupe in tuple(dupe_lut.items()):
            parent = dupe_lut[o.parent]
            if parent:
                dupe.parent = parent
        return the_copy
    context = bpy.context
    scene = context.scene
    col = context.collection
    assert(col is not scene.collection)
    copied_collection = copy(scene.collection, col)
    copied_collection.name = c.get_name() + ' atlas'

    #setup materials for the combiner script
    for obj in [o for o in bpy.data.collections[c.get_name() + ' atlas'].all_objects if o.type == 'MESH']:
        for mat in [mat_slot.material for mat_slot in obj.material_slots if mat_slot.material.get('simple')]:
            nodes = mat.node_tree.nodes
            links = mat.node_tree.links
            emissive_node = nodes.new('ShaderNodeEmission')
            emissive_node.name = 'Emission'
            image_node = nodes.new('ShaderNodeTexImage')
            image_node.name = 'Image Texture'
            links.new(emissive_node.inputs[0], image_node.outputs[0])
            image_node.image = nodes['textures'].node_tree.nodes['light'].image
        context.view_layer.objects.active = obj
        bpy.ops.object.material_slot_remove_unused()

    #call the material combiner script
    bpy.ops.kkbp.combiner()

    #replace all images with the atlas in a new atlas material
    bake_types = []
    if scene.kkbp.bake_light_bool:
        bake_types.append('light')
    if scene.kkbp.bake_dark_bool:
        bake_types.append('dark')
    if scene.kkbp.bake_norm_bool:
        bake_types.append('normal')
    for index, obj in enumerate([o for o in bpy.data.collections[c.get_name() + ' atlas'].all_objects if o.type == 'MESH']):
        #fix modifiers for all objects in this collection
        for mod in obj.modifiers:
            if mod.type == 'ARMATURE':
                #fix the armature modifier to use the copied aramture
                copied_armature = [o for o in bpy.data.collections[c.get_name() + ' atlas'].all_objects if o.type == 'ARMATURE'][0]
                mod.object = copied_armature
            elif mod.type == 'SOLIDIFY':
                #disable the outline on the atlased object because I don't feel like fixing it
                obj.modifiers['Outline Modifier'].show_render = False
                obj.modifiers['Outline Modifier'].show_viewport = False
            elif mod.type == 'UV_WARP':
                #fix the UV warp modifier to use the copied armature
                copied_armature = [o for o in bpy.data.collections[c.get_name() + ' atlas'].all_objects if o.type == 'ARMATURE'][0]
                mod.object_from = copied_armature
                mod.object_to = copied_armature
        
        #check if this object had any atlas-able materials to begin with. If not, skip
        if not [mat_slot.material for mat_slot in obj.material_slots if mat_slot.material.get('simple')]:
            continue

        for bake_type in bake_types:
            #check for atlas dupes
            atlas_image_name = f'{sanitizeMaterialName(obj.name).replace("001","")}_{bake_type}.png'
            if bpy.data.images.get(atlas_image_name):
                bpy.data.images.remove(bpy.data.images.get(atlas_image_name))
            #the atlas image is originally named after the index of the object. Rename it to the object name
            original_image_path = os.path.join(context.scene.kkbp.import_dir, 'atlas_files', f'{index}_{bake_type}.png')
            new_image_path = os.path.join(context.scene.kkbp.import_dir, 'atlas_files', atlas_image_name)
            if os.path.exists(original_image_path):
                try:
                    os.rename(original_image_path, new_image_path)
                except:
                    #rename failed because the file already exists. Delete the old one and try again
                    os.remove(new_image_path)
                    os.rename(original_image_path, new_image_path)
            #then load it into blender
            atlas_image = bpy.data.images.load(new_image_path)
            bpy.data.images.remove(bpy.data.images.get(f'{index}_{bake_type}.png'))
            for material in [mat_slot.material for mat_slot in obj.material_slots if mat_slot.material.get('simple')]:
                image = material.node_tree.nodes['textures'].node_tree.nodes[bake_type].image
                if image:
                    if image.name == 'Template: Pattern Placeholder':
                        image = None
                if not image:
                    print(image)
                    continue
                else:
                    if not bpy.data.materials.get('{} Atlas'.format(material.name)):
                        #remove the emission nodes from earlier
                        if material.node_tree.nodes.get('Emission'):
                            material.node_tree.nodes.remove(material.node_tree.nodes['Image Texture'])
                            material.node_tree.nodes.remove(material.node_tree.nodes['Emission'])
                        atlas_material = material.copy()
                        atlas_material['simple'] = False
                        atlas_material['atlas'] = True
                        atlas_material.name = '{} Atlas'.format(material.name)
                        new_group = atlas_material.node_tree.nodes['textures'].node_tree.copy()
                        new_group.name = '{} Atlas'.format(material.name)
                    else:
                        atlas_material =  bpy.data.materials.get('{} Atlas'.format(material.name))
                        new_group = bpy.data.node_groups.get('{} Atlas'.format(material.name))
                    atlas_material.node_tree.nodes['textures'].node_tree = new_group
                    new_group.nodes[bake_type].image = atlas_image
                    #load in the light image to the dark slot to make it look better when only the light colors are baked.
                    # This will be overwritten with the dark image in the next loop if the user baked it
                    if bake_type == 'light':
                        new_group.nodes['dark'].image = atlas_image

        #replace all images with the atlas in a new atlas material
        for mat_slot in [m for m in obj.material_slots if m.material.get('simple')]:
            material = mat_slot.material
            atlas_material = bpy.data.materials.get('{} Atlas'.format(material.name))
            mat_slot.material = atlas_material

    #setup the new collection for exporting
    if bpy.app.version[0] > 3:
        layer_collection = bpy.context.view_layer.layer_collection
        layerColl = recurLayerCollection(layer_collection, c.get_name() + ' atlas')
        bpy.context.view_layer.active_layer_collection = layerColl
        bpy.ops.collection.exporter_add(name="IO_FH_fbx")
        bpy.data.collections[c.get_name() + ' atlas'].exporters[0].export_properties.object_types = {'EMPTY', 'ARMATURE', 'MESH', 'OTHER'}
        bpy.data.collections[c.get_name() + ' atlas'].exporters[0].export_properties.use_mesh_modifiers = False
        bpy.data.collections[c.get_name() + ' atlas'].exporters[0].export_properties.add_leaf_bones = False
        bpy.data.collections[c.get_name() + ' atlas'].exporters[0].export_properties.bake_anim = False
        bpy.data.collections[c.get_name() + ' atlas'].exporters[0].export_properties.apply_scale_options = 'FBX_SCALE_ALL'
        bpy.data.collections[c.get_name() + ' atlas'].exporters[0].export_properties.path_mode = 'COPY'
        bpy.data.collections[c.get_name() + ' atlas'].exporters[0].export_properties.embed_textures = False
        bpy.data.collections[c.get_name() + ' atlas'].exporters[0].export_properties.mesh_smooth_type = 'OFF'
        bpy.data.collections[c.get_name() + ' atlas'].exporters[0].export_properties.filepath = os.path.join(folderpath.replace('baked_files', 'atlas_files'), f'{sanitizeMaterialName(c.get_name())} exported model atlas.fbx')

    #hide the new collection
    c.show_layer_collection('Bone Widgets', True)
    c.show_layer_collection('Rigged tongue ' + c.get_name(), True)
    c.show_layer_collection('Rigged tongue ' + c.get_name() + '.001', True)
    c.show_layer_collection('Bone Widgets.001', True)
    c.show_layer_collection(c.get_name() + ' atlas', True)
    remove_orphan_data()

class bake_materials(bpy.types.Operator):
    bl_idname = "kkbp.bakematerials"
    bl_label = "Bake and generate atlased model"
    bl_description = t('bake_mats_tt')
    bl_options = {'REGISTER', 'UNDO'}
        
    def execute(self, context):
        try:
            #just use the pmx folder for the baked files
            scene = context.scene.kkbp
            folderpath = os.path.join(context.scene.kkbp.import_dir, 'baked_files', '')
            last_step = time.time()
            c.toggle_console()
            c.reset_timer()
            c.kklog('Switching to EEVEE for material baking...')
            bpy.context.scene.render.engine = 'BLENDER_EEVEE_NEXT' if bpy.app.version[0] > 3 else 'BLENDER_EEVEE'
            c.switch(c.get_body(), 'OBJECT')
            c.set_viewport_shading('SOLID')
            
            #enable transparency
            bpy.context.scene.render.film_transparent = True
            bpy.context.scene.render.filter_size = 0.50

            for bake_object in c.get_all_bakeable_objects():
                #do a quick check to make sure this object has any materials that can be baked
                worth_baking = [m for m in bake_object.material_slots if m.material.get('bake')]
                if not worth_baking:
                    c.kklog(f'Not finalizing object because there were no materials worth baking: {bake_object.name}')
                    continue

                #make sure the collection for this object is enabled in the outliner if it is a clothing item
                if bake_object != c.get_body():
                    original_collection_state = c.get_layer_collection_state(bake_object.users_collection[0].name)
                    c.show_layer_collection(bake_object.users_collection[0].name, False)

                #hide all objects except this one
                for obj in [o for o in bpy.context.view_layer.objects if o]:
                    obj.hide_render = True
                #unhide the object to bake (but only if the old baking system is not used)
                if not bpy.context.scene.kkbp.old_bake_bool:
                    bake_object.hide_render = False
                camera = setup_camera()
                c.switch(bake_object)
                setup_geometry_nodes_and_fillerplane(camera)
                bpy.ops.wm.redraw_timer(type='DRAW_WIN_SWAP', iterations=1)                

                #perform the baking operation
                bake_types = []
                if scene.bake_light_bool:
                    bake_types.append('light')
                if scene.bake_dark_bool:
                    bake_types.append('dark')
                if scene.bake_norm_bool:
                    bake_types.append('normal')
                for bake_type in bake_types:
                    bake_pass(folderpath, bake_type)
                cleanup()

                #restore the original collection state 
                if bake_object != c.get_body():
                    c.show_layer_collection(bake_object.users_collection[0].name, original_collection_state)
            
            #disable transparency
            bpy.context.scene.render.film_transparent = False
            bpy.context.scene.render.filter_size = 1.5
            for bake_object in c.get_all_bakeable_objects():
                replace_all_baked_materials(folderpath, bake_object)
            
            #show all objects again
            for obj in bpy.context.view_layer.objects:
                obj.hide_render = False
            
            if scene.use_atlas:
                create_material_atlas(folderpath)
            
            #setup the original collection for exporting
            # https://blender.stackexchange.com/questions/127403/change-active-collection
            #Recursively transverse layer_collection for a particular name
            def recurLayerCollection(layerColl, collName):
                found = None
                if (layerColl.name == collName):
                    return layerColl
                for layer in layerColl.children:
                    found = recurLayerCollection(layer, collName)
                    if found:
                        return found

            layer_collection = bpy.context.view_layer.layer_collection
            layerColl = recurLayerCollection(layer_collection, c.get_name())
            bpy.context.view_layer.active_layer_collection = layerColl
            if bpy.app.version[0] != 3:
                if not bpy.data.collections[c.get_name()].exporters:
                    bpy.ops.collection.exporter_add(name="IO_FH_fbx")
                    bpy.data.collections[c.get_name()].exporters[0].export_properties.object_types = {'EMPTY', 'ARMATURE', 'MESH', 'OTHER'}
                    bpy.data.collections[c.get_name()].exporters[0].export_properties.use_mesh_modifiers = False
                    bpy.data.collections[c.get_name()].exporters[0].export_properties.add_leaf_bones = False
                    bpy.data.collections[c.get_name()].exporters[0].export_properties.bake_anim = False
                    bpy.data.collections[c.get_name()].exporters[0].export_properties.apply_scale_options = 'FBX_SCALE_ALL'
                    bpy.data.collections[c.get_name()].exporters[0].export_properties.path_mode = 'COPY'
                    bpy.data.collections[c.get_name()].exporters[0].export_properties.embed_textures = False
                    bpy.data.collections[c.get_name()].exporters[0].export_properties.mesh_smooth_type = 'OFF'
                    bpy.data.collections[c.get_name()].exporters[0].export_properties.filepath = os.path.join(folderpath.replace('baked_files', 'atlas_files'), f'{sanitizeMaterialName(c.get_name())} exported model.fbx')
            c.toggle_console()

            c.kklog('Finished in ' + str(time.time() - last_step)[0:4] + 's')
            c.set_viewport_shading('SOLID')
            return {'FINISHED'}
        except:
            c.kklog('Unknown python error occurred', type = 'error')
            c.kklog(traceback.format_exc())
            c.set_viewport_shading('SOLID')
            self.report({'ERROR'}, traceback.format_exc())
            return {"CANCELLED"}