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import base64 import uvicorn from fastapi.staticfiles import StaticFiles from fastapi import FastAPI from fastapi.responses import FileResponse app = FastAPI() def add_base32_padding(encoded_text): padding_needed = 8 - (len(encoded_text) % 8) return encoded_text + '=' * padding_needed def remove_f4_prefix(encoded_text): prefix = "f410f" if encoded_text.startswith(prefix): return encoded_text[len(prefix):] else: return None @app.get("/", response_class=FileResponse) def read_root(): return "./static/index.html" @app.get("/convert_address_f4_0X") def convert_address_f4_0X(f4Address: str): print(f4Address) if f4Address is not None and len(f4Address) == 44: encoded_text = remove_f4_prefix(f4Address) encoded_text_with_padding = add_base32_padding(encoded_text.upper()) decoded_bytes = base64.b32decode(encoded_text_with_padding) # Discard the last 4 bytes decoded_bytes = decoded_bytes[:-4] hex_string = "0x" + decoded_bytes.hex() return {"fevm address": hex_string} else: return {"error": "Incorrect f4 address format"} app.mount("/", StaticFiles(directory="static"), name="static") if __name__ == "__main__": uvicorn.run(app, host="0.0.0.0", port=8000) |