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backend/app/core/config.py

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+"""
+Tool_OCR - Configuration Management
+Loads environment variables and provides centralized configuration
+"""
+
+from typing import List
+from pydantic_settings import BaseSettings
+from pydantic import Field
+from pathlib import Path
+
+
+class Settings(BaseSettings):
+    """Application settings loaded from environment variables"""
+
+    # ===== Database Configuration =====
+    mysql_host: str = Field(default="mysql.theaken.com")
+    mysql_port: int = Field(default=33306)
+    mysql_user: str = Field(default="A060")
+    mysql_password: str = Field(default="")
+    mysql_database: str = Field(default="db_A060")
+
+    @property
+    def database_url(self) -> str:
+        """Construct SQLAlchemy database URL"""
+        return (
+            f"mysql+pymysql://{self.mysql_user}:{self.mysql_password}"
+            f"@{self.mysql_host}:{self.mysql_port}/{self.mysql_database}"
+        )
+
+    # ===== Application Configuration =====
+    backend_port: int = Field(default=12010)
+    frontend_port: int = Field(default=12011)
+    secret_key: str = Field(default="your-secret-key-change-this")
+    algorithm: str = Field(default="HS256")
+    access_token_expire_minutes: int = Field(default=1440)  # 24 hours
+
+    # ===== OCR Configuration =====
+    paddleocr_model_dir: str = Field(default="./models/paddleocr")
+    ocr_languages: str = Field(default="ch,en,japan,korean")
+    ocr_confidence_threshold: float = Field(default=0.5)
+    max_ocr_workers: int = Field(default=4)
+
+    @property
+    def ocr_languages_list(self) -> List[str]:
+        """Get OCR languages as list"""
+        return [lang.strip() for lang in self.ocr_languages.split(",")]
+
+    # ===== File Upload Configuration =====
+    max_upload_size: int = Field(default=52428800)  # 50MB
+    allowed_extensions: str = Field(default="png,jpg,jpeg,pdf,bmp,tiff,doc,docx,ppt,pptx")
+    upload_dir: str = Field(default="./uploads")
+    temp_dir: str = Field(default="./uploads/temp")
+    processed_dir: str = Field(default="./uploads/processed")
+    images_dir: str = Field(default="./uploads/images")
+
+    @property
+    def allowed_extensions_list(self) -> List[str]:
+        """Get allowed extensions as list"""
+        return [ext.strip() for ext in self.allowed_extensions.split(",")]
+
+    # ===== Export Configuration =====
+    storage_dir: str = Field(default="./storage")
+    markdown_dir: str = Field(default="./storage/markdown")
+    json_dir: str = Field(default="./storage/json")
+    exports_dir: str = Field(default="./storage/exports")
+
+    # ===== PDF Generation Configuration =====
+    pandoc_path: str = Field(default="/opt/homebrew/bin/pandoc")
+    font_dir: str = Field(default="/System/Library/Fonts")
+    pdf_page_size: str = Field(default="A4")
+    pdf_margin_top: int = Field(default=20)
+    pdf_margin_bottom: int = Field(default=20)
+    pdf_margin_left: int = Field(default=20)
+    pdf_margin_right: int = Field(default=20)
+
+    # ===== Translation Configuration (Reserved) =====
+    enable_translation: bool = Field(default=False)
+    translation_engine: str = Field(default="offline")
+    argostranslate_models_dir: str = Field(default="./models/argostranslate")
+
+    # ===== Background Tasks Configuration =====
+    task_queue_type: str = Field(default="memory")
+    redis_url: str = Field(default="redis://localhost:6379/0")
+
+    # ===== CORS Configuration =====
+    cors_origins: str = Field(default="http://localhost:12011,http://127.0.0.1:12011")
+
+    @property
+    def cors_origins_list(self) -> List[str]:
+        """Get CORS origins as list"""
+        return [origin.strip() for origin in self.cors_origins.split(",")]
+
+    # ===== Logging Configuration =====
+    log_level: str = Field(default="INFO")
+    log_file: str = Field(default="./logs/app.log")
+
+    class Config:
+        # Look for .env in project root (one level up from backend/)
+        env_file = str(Path(__file__).resolve().parent.parent.parent.parent / ".env")
+        env_file_encoding = "utf-8"
+        case_sensitive = False
+
+    def ensure_directories(self):
+        """Create all necessary directories if they don't exist"""
+        dirs = [
+            self.upload_dir,
+            self.temp_dir,
+            self.processed_dir,
+            self.images_dir,
+            self.storage_dir,
+            self.markdown_dir,
+            self.json_dir,
+            self.exports_dir,
+            self.paddleocr_model_dir,
+            Path(self.log_file).parent,
+        ]
+
+        if self.enable_translation and self.translation_engine == "offline":
+            dirs.append(self.argostranslate_models_dir)
+
+        for dir_path in dirs:
+            Path(dir_path).mkdir(parents=True, exist_ok=True)
+
+
+# Global settings instance
+settings = Settings()