#derived from https://github.com/wu4f/cs410g-src/blob/main/05_CodeSummarize/01_python_parser.py
from langchain_community.document_loaders.generic import GenericLoader
from langchain_community.document_loaders.parsers import LanguageParser
from langchain_text_splitters import Language
from langchain_openai import ChatOpenAI
from langchain_core.runnables import RunnablePassthrough
from langchain_core.prompts import PromptTemplate
from langchain_core.output_parsers import StrOutputParser
from dotenv import load_dotenv
import readline
load_dotenv()

llm = ChatOpenAI(model_name="gpt-4-turbo", temperature=0)

def deobfuscate(path):
    loader = GenericLoader.from_filesystem(
            path,
            glob="*",
            suffixes=[".js"],
            parser=LanguageParser(),
    )
    docs = loader.load()
    prompt1 = PromptTemplate.from_template(
        """You are an expert javascript de-obfuscater. Carefully analyze the following code and de-obduscate, by applying proper formatting, commenting, and re-naming as necessary.

        Along with this response, make a note of the changes made. If the input is anything other than obfuscated javascript, respond with "Invalid Input:" follwed by the reason why.

        {text}
        """
    )

    chain = (
      {"text": RunnablePassthrough()} 
      | prompt1
      | llm
      | StrOutputParser()
    )
    output = "\n".join([d.page_content for d in docs])
    result = chain.invoke(output)
    return(result)

print("Welcome to my javascript code de-obfuscator. Supply a local or web path to an obfuscated javascript file and I will attempt to de-obfuscate it.")

while True:
    try:
        line = input("llm>> ")
        if line:
            result = deobfuscate(line)
            print(result)
        else:
            break
    except Exception as e:
        print(e)
        break