/**
 * Myext handling of page actions in content scripts
 *
 * Copyright (C) 2021 Wojtek Kosior
 * Redistribution terms are gathered in the `copyright' file.
 */

"use strict";

(() => {
    const CONNECTION_TYPE = window.CONNECTION_TYPE;
    const browser = window.browser;

    var port;
    var loaded = false;
    var scripts_awaiting = [];
    var nonce;

    function handle_message(message)
    {
	console.log(["message", message]);

	if (message.inject === undefined)
	    return;

	for (let script_text of message.inject) {
	    if (loaded)
		add_script(script_text);
	    else
		scripts_awaiting.push(script_text);
	}
    }

    function document_loaded(event)
    {
	console.log("loaded");

	loaded = true;

	for (let script_text of scripts_awaiting)
	    add_script(script_text);

	scripts_awaiting = undefined;
    }

    function add_script(script_text)
    {
	let script = document.createElement("script");
	script.textContent = script_text;
	script.setAttribute("nonce", nonce);
	document.body.appendChild(script);
    }

    function handle_page_actions(script_nonce) {
	document.addEventListener("DOMContentLoaded", document_loaded);
	port = browser.runtime.connect({name : CONNECTION_TYPE.PAGE_ACTIONS});
	port.onMessage.addListener(handle_message);
	port.postMessage({url: document.URL});

	nonce = script_nonce;
    }

    window.handle_page_actions = handle_page_actions;
})();