import base64
from pathlib import Path

import requests

from menus import MenuMessageFormatter, Menus


class SignalMessager:
    def __init__(self, api_url: str, user_number: str):
        self.api_url = api_url
        self.user_number = user_number

    @staticmethod
    def create_headers() -> dict[str, str]:
        return {"Content-Type": "application/json"}

    @staticmethod
    def create_attachment(pdf: Path):
        return base64.b64encode(pdf.read_bytes())

    def send_message(self, message: str, pdf_file: Path, recipients: list[str]):
        headers = self.create_headers()
        attachment = self.create_attachment(pdf_file)

        body = {
            "message": message,
            "text_mode": "styled",
            "number": self.user_number,
            "recipients": recipients,
            "base64_attachments": [
                f"data:application/pdf;filename=menu.pdf;base64,{attachment.decode()}"
            ],
        }

        requests.post(self.api_url, headers=headers, json=body)