mirror of
https://github.com/willmiao/ComfyUI-Lora-Manager.git
synced 2026-03-25 15:15:44 -03:00
Refactor and optimize code for improved readability and maintainability
This commit is contained in:
Will Miao
228
routes/api_routes.py
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228
routes/api_routes.py
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import os
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import json
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import logging
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from aiohttp import web
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from typing import Dict, List
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from ..services.civitai_client import CivitaiClient
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from ..utils.file_utils import update_civitai_metadata, load_metadata
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from ..config import config
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logger = logging.getLogger(__name__)
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class ApiRoutes:
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"""API route handlers for LoRA management"""
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@classmethod
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def setup_routes(cls, app: web.Application):
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"""Register API routes"""
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routes = cls()
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app.router.add_post('/api/delete_model', routes.delete_model)
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app.router.add_post('/api/fetch-civitai', routes.fetch_civitai)
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app.router.add_post('/api/replace_preview', routes.replace_preview)
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async def delete_model(self, request: web.Request) -> web.Response:
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"""Handle model deletion request"""
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try:
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data = await request.json()
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file_path = data.get('file_path')
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if not file_path:
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return web.Response(text='Model path is required', status=400)
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target_dir = os.path.dirname(file_path)
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file_name = os.path.splitext(os.path.basename(file_path))[0]
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deleted_files = await self._delete_model_files(target_dir, file_name)
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return web.json_response({
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'success': True,
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'deleted_files': deleted_files
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})
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except Exception as e:
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logger.error(f"Error deleting model: {e}", exc_info=True)
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return web.Response(text=str(e), status=500)
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async def fetch_civitai(self, request: web.Request) -> web.Response:
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"""Handle CivitAI metadata fetch request"""
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client = CivitaiClient()
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try:
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data = await request.json()
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metadata_path = os.path.splitext(data['file_path'])[0] + '.metadata.json'
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# Check if model is from CivitAI
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local_metadata = await self._load_local_metadata(metadata_path)
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if not local_metadata.get('from_civitai', True):
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return web.json_response({"success": True, "notice": "Not from CivitAI"})
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# Fetch and update metadata
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civitai_metadata = await client.get_model_by_hash(data["sha256"])
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if not civitai_metadata:
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return await self._handle_not_found_on_civitai(metadata_path, local_metadata)
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await self._update_model_metadata(metadata_path, local_metadata, civitai_metadata, client)
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return web.json_response({"success": True})
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except Exception as e:
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logger.error(f"Error fetching from CivitAI: {e}", exc_info=True)
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return web.json_response({"success": False, "error": str(e)}, status=500)
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finally:
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await client.close()
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async def replace_preview(self, request: web.Request) -> web.Response:
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"""Handle preview image replacement request"""
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try:
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reader = await request.multipart()
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preview_data, content_type = await self._read_preview_file(reader)
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model_path = await self._read_model_path(reader)
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preview_path = await self._save_preview_file(model_path, preview_data, content_type)
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await self._update_preview_metadata(model_path, preview_path)
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return web.json_response({
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"success": True,
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"preview_url": config.get_preview_static_url(preview_path)
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})
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except Exception as e:
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logger.error(f"Error replacing preview: {e}", exc_info=True)
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return web.Response(text=str(e), status=500)
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# Private helper methods
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async def _delete_model_files(self, target_dir: str, file_name: str) -> List[str]:
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"""Delete model and associated files"""
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patterns = [
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f"{file_name}.safetensors", # Required
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f"{file_name}.metadata.json",
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f"{file_name}.preview.png",
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f"{file_name}.preview.jpg",
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f"{file_name}.preview.jpeg",
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f"{file_name}.preview.webp",
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f"{file_name}.preview.mp4",
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f"{file_name}.png",
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f"{file_name}.jpg",
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f"{file_name}.jpeg",
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f"{file_name}.webp",
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f"{file_name}.mp4"
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]
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deleted = []
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main_file = patterns[0]
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main_path = os.path.join(target_dir, main_file)
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if not os.path.exists(main_path):
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raise web.HTTPNotFound(text=f"Model file not found: {main_file}")
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# Delete main file first
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os.remove(main_path)
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deleted.append(main_file)
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# Delete optional files
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for pattern in patterns[1:]:
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path = os.path.join(target_dir, pattern)
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if os.path.exists(path):
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try:
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os.remove(path)
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deleted.append(pattern)
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except Exception as e:
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logger.warning(f"Failed to delete {pattern}: {e}")
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return deleted
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async def _read_preview_file(self, reader) -> tuple[bytes, str]:
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"""Read preview file and content type from multipart request"""
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field = await reader.next()
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if field.name != 'preview_file':
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raise ValueError("Expected 'preview_file' field")
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content_type = field.headers.get('Content-Type', 'image/png')
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return await field.read(), content_type
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async def _read_model_path(self, reader) -> str:
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"""Read model path from multipart request"""
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field = await reader.next()
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if field.name != 'model_path':
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raise ValueError("Expected 'model_path' field")
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return (await field.read()).decode()
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async def _save_preview_file(self, model_path: str, preview_data: bytes, content_type: str) -> str:
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"""Save preview file and return its path"""
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# Determine file extension based on content type
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if content_type.startswith('video/'):
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extension = '.preview.mp4'
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else:
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extension = '.preview.png'
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base_name = os.path.splitext(os.path.basename(model_path))[0]
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folder = os.path.dirname(model_path)
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preview_path = os.path.join(folder, base_name + extension).replace(os.sep, '/')
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with open(preview_path, 'wb') as f:
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f.write(preview_data)
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return preview_path
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async def _update_preview_metadata(self, model_path: str, preview_path: str):
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"""Update preview path in metadata"""
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metadata_path = os.path.splitext(model_path)[0] + '.metadata.json'
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if os.path.exists(metadata_path):
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try:
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with open(metadata_path, 'r', encoding='utf-8') as f:
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metadata = json.load(f)
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# Update preview_url directly in the metadata dict
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metadata['preview_url'] = preview_path
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with open(metadata_path, 'w', encoding='utf-8') as f:
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json.dump(metadata, f, indent=2, ensure_ascii=False)
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except Exception as e:
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logger.error(f"Error updating metadata: {e}")
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async def _load_local_metadata(self, metadata_path: str) -> Dict:
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"""Load local metadata file"""
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if os.path.exists(metadata_path):
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try:
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with open(metadata_path, 'r', encoding='utf-8') as f:
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return json.load(f)
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except Exception as e:
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logger.error(f"Error loading metadata from {metadata_path}: {e}")
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return {}
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async def _handle_not_found_on_civitai(self, metadata_path: str, local_metadata: Dict) -> web.Response:
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"""Handle case when model is not found on CivitAI"""
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local_metadata['from_civitai'] = False
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with open(metadata_path, 'w', encoding='utf-8') as f:
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json.dump(local_metadata, f, indent=2, ensure_ascii=False)
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return web.json_response(
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{"success": False, "error": "Not found on CivitAI"},
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status=404
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)
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async def _update_model_metadata(self, metadata_path: str, local_metadata: Dict,
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civitai_metadata: Dict, client: CivitaiClient) -> None:
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"""Update local metadata with CivitAI data"""
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local_metadata['civitai'] = civitai_metadata
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# Update model name if available
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if 'model' in civitai_metadata:
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local_metadata['model_name'] = civitai_metadata['model'].get('name',
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local_metadata.get('model_name'))
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# Update base model
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local_metadata['base_model'] = civitai_metadata.get('baseModel')
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# Update preview if needed
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if not local_metadata.get('preview_url') or not os.path.exists(local_metadata['preview_url']):
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first_preview = next((img for img in civitai_metadata.get('images', [])), None)
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if first_preview:
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preview_ext = '.mp4' if first_preview['type'] == 'video' else os.path.splitext(first_preview['url'])[-1]
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# Fix: Get base name without .metadata.json
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base_name = os.path.splitext(os.path.splitext(os.path.basename(metadata_path))[0])[0]
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preview_filename = base_name + '.preview' + preview_ext
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preview_path = os.path.join(os.path.dirname(metadata_path), preview_filename)
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if await client.download_preview_image(first_preview['url'], preview_path):
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local_metadata['preview_url'] = preview_path.replace(os.sep, '/')
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# Save updated metadata
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with open(metadata_path, 'w', encoding='utf-8') as f:
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json.dump(local_metadata, f, indent=2, ensure_ascii=False)
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