| 1 | # Copyright (C) 2025 AIDC-AI |
| 2 | # |
| 3 | # Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | # you may not use this file except in compliance with the License. |
| 5 | # You may obtain a copy of the License at |
| 6 | # http://www.apache.org/licenses/LICENSE-2.0 |
| 7 | # Unless required by applicable law or agreed to in writing, software |
| 8 | # distributed under the License is distributed on an "AS IS" BASIS, |
| 9 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 10 | # See the License for the specific language governing permissions and |
| 11 | # limitations under the License. |
| 12 | |
| 13 | """ |
| 14 | Session state management for web UI |
| 15 | """ |
| 16 | |
| 17 | import streamlit as st |
| 18 | from loguru import logger |
| 19 | |
| 20 | from web.i18n import get_language, set_language |
| 21 | from web.utils.async_helpers import run_async |
| 22 | |
| 23 | |
| 24 | def init_session_state(): |
| 25 | """Initialize session state variables""" |
| 26 | if "language" not in st.session_state: |
| 27 | # Use auto-detected system language |
| 28 | st.session_state.language = get_language() |
| 29 | |
| 30 | |
| 31 | def init_i18n(): |
| 32 | """Initialize internationalization""" |
| 33 | # Locales are already loaded and system language detected on import |
| 34 | # Get language from session state or use auto-detected system language |
| 35 | if "language" not in st.session_state: |
| 36 | st.session_state.language = get_language() # Use auto-detected language |
| 37 | |
| 38 | # Set current language |
| 39 | set_language(st.session_state.language) |
| 40 | |
| 41 | |
| 42 | def get_pixelle_video(): |
| 43 | """ |
| 44 | Get initialized Pixelle-Video instance with proper caching and cleanup |
| 45 | |
| 46 | Uses st.session_state to cache the instance per user session. |
| 47 | ComfyKit is lazily initialized and automatically recreated on config changes. |
| 48 | """ |
| 49 | from pixelle_video.service import PixelleVideoCore |
| 50 | from pixelle_video.config import config_manager |
| 51 | |
| 52 | # Compute config hash for change detection |
| 53 | import hashlib |
| 54 | import json |
| 55 | config_dict = config_manager.config.to_dict() |
| 56 | # Only track ComfyUI config for hash (other config changes don't need core recreation) |
| 57 | comfyui_config = config_dict.get("comfyui", {}) |
| 58 | config_hash = hashlib.md5(json.dumps(comfyui_config, sort_keys=True).encode()).hexdigest() |
| 59 | |
| 60 | # Check if we need to create or recreate core instance |
| 61 | need_recreate = False |
| 62 | if 'pixelle_video' not in st.session_state: |
| 63 | need_recreate = True |
| 64 | logger.info("Creating new PixelleVideoCore instance (first time)") |
| 65 | elif st.session_state.get('pixelle_video_config_hash') != config_hash: |
| 66 | need_recreate = True |
| 67 | logger.info("Configuration changed, recreating PixelleVideoCore instance") |
| 68 | # Cleanup old instance |
| 69 | old_core = st.session_state.pixelle_video |
| 70 | try: |
| 71 | run_async(old_core.cleanup()) |
| 72 | except Exception as e: |
| 73 | logger.warning(f"Failed to cleanup old PixelleVideoCore: {e}") |
| 74 | |
| 75 | if need_recreate: |
| 76 | # Create and initialize new instance |
| 77 | pixelle_video = PixelleVideoCore() |
| 78 | run_async(pixelle_video.initialize()) |
| 79 | |
| 80 | # Cache in session state |
| 81 | st.session_state.pixelle_video = pixelle_video |
| 82 | st.session_state.pixelle_video_config_hash = config_hash |
| 83 | logger.info("✅ PixelleVideoCore initialized and cached") |
| 84 | else: |
| 85 | pixelle_video = st.session_state.pixelle_video |
| 86 | logger.debug("Reusing cached PixelleVideoCore instance") |
| 87 | |
| 88 | return pixelle_video |
| 89 | |
| 90 |