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from typing import List
import gradio as gr
import threading
import civitai.lib as civitai
from modules import script_callbacks, shared
previewable_types = ['LORA', 'LoCon', 'Hypernetwork', 'TextualInversion', 'Checkpoint']
def load_previews():
download_missing_previews = shared.opts.data.get('civitai_download_previews', True)
if not download_missing_previews: return
nsfw_previews = shared.opts.data.get('civitai_nsfw_previews', True)
civitai.log(f"Check resources for missing preview images")
resources = civitai.load_resource_list()
resources = [r for r in resources if r['type'] in previewable_types]
# get all resources that are missing previews
missing_previews = [r for r in resources if r['hasPreview'] is False]
civitai.log(f"Found {len(missing_previews)} resources missing preview images")
hashes = [r['hash'] for r in missing_previews]
# split hashes into batches of 100 and fetch into results
results = []
try:
for i in range(0, len(hashes), 100):
batch = hashes[i:i + 100]
results.extend(civitai.get_all_by_hash(batch))
except:
civitai.log("Failed to fetch preview images from Civitai")
return
if len(results) == 0:
civitai.log("No preview images found on Civitai")
return
civitai.log(f"Found {len(results)} hash matches")
# update the resources with the new preview
updated = 0
for r in results:
if (r is None): continue
for file in r['files']:
if not 'hashes' in file or not 'SHA256' in file['hashes']: continue
hash = file['hashes']['SHA256']
if hash.lower() not in hashes: continue
images = r['images']
if (nsfw_previews is False): images = [i for i in images if i['nsfw'] is False]
if (len(images) == 0): continue
image_url = images[0]['url']
civitai.update_resource_preview(hash, image_url)
updated += 1
civitai.log(f"Updated {updated} preview images")
# Automatically pull model with corresponding hash from Civitai
def start_load_previews(demo: gr.Blocks, app):
thread = threading.Thread(target=load_previews)
thread.start()
script_callbacks.on_app_started(start_load_previews)
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