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import base64
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import os
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import mimetypes
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from typing import Optional, Dict, Any
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import logging
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logging.basicConfig(level=logging.INFO)
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logger = logging.getLogger(__name__)
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def encode_image_to_base64(image_path: str) -> str:
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"""Convert image file to base64 encoding"""
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try:
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with open(image_path, "rb") as image_file:
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encoded = base64.b64encode(image_file.read()).decode('utf-8')
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return encoded
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except Exception as e:
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logger.error(f"Error encoding image {image_path}: {str(e)}")
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raise
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def get_mime_type(file_path: str) -> str:
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"""Get MIME type for file"""
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mime_type, _ = mimetypes.guess_type(file_path)
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return mime_type or 'application/octet-stream'
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def validate_file_exists(file_path: str) -> bool:
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"""Validate that file exists and is readable"""
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return os.path.exists(file_path) and os.path.isfile(file_path)
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def get_env_var(var_name: str, default: Optional[str] = None) -> str:
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"""Get environment variable with optional default"""
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value = os.getenv(var_name, default)
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if value is None:
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raise ValueError(f"Environment variable {var_name} is required")
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return value
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