基础的切片和质量控制

app/__init__.py

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+import os
+import json
+from flask import Flask, request, session, current_app
+from flask_sqlalchemy import SQLAlchemy
+from flask_login import LoginManager
+from sqlalchemy import event
+from sqlalchemy.engine import Engine
+
+db = SQLAlchemy()
+login_manager = LoginManager()
+
+@event.listens_for(Engine, "connect")
+def set_sqlite_pragma(dbapi_connection, connection_record):
+    if dbapi_connection.__class__.__module__ == "sqlite3":
+        cursor = dbapi_connection.cursor()
+        cursor.execute("PRAGMA journal_mode=WAL")
+        cursor.execute("PRAGMA synchronous=NORMAL")
+        cursor.close()
+
+# Load all i18n jsons
+i18n_dict = {}
+
+def load_i18n(app):
+    global i18n_dict
+    i18n_dir = os.path.join(app.root_path, '..', 'assets', 'i18n')
+    if os.path.exists(i18n_dir):
+        for f in os.listdir(i18n_dir):
+            if f.endswith('.json'):
+                lang_code = f.replace('.json', '')
+                with open(os.path.join(i18n_dir, f), 'r', encoding='utf-8') as jf:
+                    i18n_dict[lang_code] = json.load(jf)
+
+def get_locale():
+    # 用户手动选择的语言保存在 cookie 中优先
+    lang = request.cookies.get('lang')
+    if lang in i18n_dict:
+        return lang
+    
+    # Check accept_languages with our available dict keys
+    best_match = request.accept_languages.best_match(list(i18n_dict.keys()))
+    return best_match if best_match else 'en'
+
+def _t(key):
+    lang = get_locale()
+    # Fallback to english if language missing or key missing
+    if lang in i18n_dict and key in i18n_dict[lang]:
+        return i18n_dict[lang][key]
+    if 'en' in i18n_dict and key in i18n_dict['en']:
+        return i18n_dict['en'][key]
+    return key # fallback to the key itself
+
+def create_app():
+    app = Flask(__name__, static_url_path='/assets', static_folder='../assets')
+    app.config['SECRET_KEY'] = 'your-secret-key-change-it-in-production'
+    app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///aio_3d.db'
+    app.config['SQLALCHEMY_ENGINE_OPTIONS'] = {'connect_args': {'timeout': 15}}
+    app.config['UPLOAD_FOLDER'] = os.path.abspath(os.path.join(app.root_path, '..', 'uploads'))
+    
+    os.makedirs(app.config['UPLOAD_FOLDER'], exist_ok=True)
+    
+    load_i18n(app)
+    
+    db.init_app(app)
+    login_manager.init_app(app)
+    
+    # Inject translation function into jinja
+    @app.context_processor
+    def inject_i18n():
+        return dict(_=_t)
+    
+    login_manager.login_view = 'auth.login'
+    
+    with app.app_context():
+        from . import models
+        db.create_all()
+        
+    from .routes import main_bp, auth_bp, admin_bp
+    app.register_blueprint(main_bp)
+    app.register_blueprint(auth_bp)
+    app.register_blueprint(admin_bp)
+
+    return app