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refactor: Improve download handling for previews and optimize image conversion in DownloadManager

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Will Miao
2025-04-11 09:00:58 +08:00
parent b0a5b48fb2
commit 297ff0dd25
2 changed files with 54 additions and 8 deletions
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60
py/services/download_manager.py
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@@ -5,6 +5,11 @@ from typing import Optional, Dict
from .civitai_client import CivitaiClient
from .file_monitor import LoraFileMonitor
from ..utils.models import LoraMetadata
from ..utils.constants import CARD_PREVIEW_WIDTH
from ..utils.exif_utils import ExifUtils
# Download to temporary file first
import tempfile
logger = logging.getLogger(__name__)
@@ -128,13 +133,54 @@ class DownloadManager:
if progress_callback:
await progress_callback(1) # 1% progress for starting preview download
preview_ext = '.mp4' if images[0].get('type') == 'video' else '.png'
preview_path = os.path.splitext(save_path)[0] + '.preview' + preview_ext
if await self.civitai_client.download_preview_image(images[0]['url'], preview_path):
metadata.preview_url = preview_path.replace(os.sep, '/')
metadata.preview_nsfw_level = images[0].get('nsfwLevel', 0)
with open(metadata_path, 'w', encoding='utf-8') as f:
json.dump(metadata.to_dict(), f, indent=2, ensure_ascii=False)
# Check if it's a video or an image
is_video = images[0].get('type') == 'video'
if is_video:
# For videos, use .mp4 extension
preview_ext = '.mp4'
preview_path = os.path.splitext(save_path)[0] + preview_ext
# Download video directly
if await self.civitai_client.download_preview_image(images[0]['url'], preview_path):
metadata.preview_url = preview_path.replace(os.sep, '/')
metadata.preview_nsfw_level = images[0].get('nsfwLevel', 0)
with open(metadata_path, 'w', encoding='utf-8') as f:
json.dump(metadata.to_dict(), f, indent=2, ensure_ascii=False)
else:
# For images, use WebP format for better performance
with tempfile.NamedTemporaryFile(suffix='.png', delete=False) as temp_file:
temp_path = temp_file.name
# Download the original image to temp path
if await self.civitai_client.download_preview_image(images[0]['url'], temp_path):
# Optimize and convert to WebP
preview_path = os.path.splitext(save_path)[0] + '.webp'
# Use ExifUtils to optimize and convert the image
optimized_data, _ = ExifUtils.optimize_image(
image_data=temp_path,
target_width=CARD_PREVIEW_WIDTH,
format='webp',
quality=85,
preserve_metadata=True
)
# Save the optimized image
with open(preview_path, 'wb') as f:
f.write(optimized_data)
# Update metadata
metadata.preview_url = preview_path.replace(os.sep, '/')
metadata.preview_nsfw_level = images[0].get('nsfwLevel', 0)
with open(metadata_path, 'w', encoding='utf-8') as f:
json.dump(metadata.to_dict(), f, indent=2, ensure_ascii=False)
# Remove temporary file
try:
os.unlink(temp_path)
except Exception as e:
logger.warning(f"Failed to delete temp file: {e}")
# Report preview download completion
if progress_callback:

2
static/js/components/LoraCard.js
View File

@@ -3,7 +3,7 @@ import { state } from '../state/index.js';
import { showLoraModal } from './loraModal/index.js';
import { bulkManager } from '../managers/BulkManager.js';
import { NSFW_LEVELS } from '../utils/constants.js';
import { replacePreview } from '../api/loraApi.js'
import { replacePreview, deleteModel } from '../api/loraApi.js'
export function createLoraCard(lora) {
const card = document.createElement('div');