import os
from scripts import loggorilla

schema_instruction_use = {
    "type": "function",
    "function": {
        "name": "instruction_use",
        "description": "Reads a specific instruction file from the 'instruction' directory and returns its content. This is typically used to load specific guidelines or system prompt extensions.",
        "parameters": {
            "type": "object",
            "properties": {
                "directory": {
                    "type": "string",
                    "description": "The subdirectory within the 'instruction' folder (e.g., 'test', 'costapy', 'costapy/template')."
                },
                "filename": {
                    "type": "string",
                    "description": "The name of the instruction file to read (e.g., 'test.md', 'costapy.md')."
                }
            },
            "required": ["directory", "filename"]
        }
    }
}

def instruction_use(directory, filename):
    loggorilla.fyinf("tools.smart", f"Calling instruction_use with directory='{directory}', filename='{filename}'")
    current_file_dir  = os.path.dirname(os.path.abspath(__file__))
    project_root      = os.path.dirname(current_file_dir)
    base_dir          = os.path.join(project_root, "instruction")
    safe_directory    = directory.lstrip('/').replace('..', '')
    safe_filename     = os.path.basename(filename)
    file_path         = os.path.join(base_dir, safe_directory, safe_filename)
    
    if not os.path.exists(file_path):
        res = f"Error: Instruction file not found at {file_path}"
        loggorilla.fyinf("tools.smart", f"File not found: {res}")
        return res
    
    try:
        with open(file_path, 'r', encoding='utf-8') as f:
            content = f.read()
        loggorilla.fyinf("tools.smart", f"Successfully read file. Content snippet: {content[:100]}...")
        return content
    except Exception as e:
        res = f"Error reading file: {str(e)}"
        loggorilla.fyinf("tools.smart", f"Exception occurred: {res}")
        return res