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

/*
 * IMPORTS_START
 * IMPORT CONNECTION_TYPE
 * IMPORT browser
 * IMPORT report_script
 * IMPORT report_settings
 * IMPORTS_END
 */

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

function handle_message(message)
{
    const [action, data] = message;

    if (action === "inject") {
	for (let script_text of data) {
	    if (loaded)
		add_script(script_text);
	    else
		scripts_awaiting.push(script_text);
	}
    }
    if (action === "settings")
	report_settings(data);
}

function document_loaded(event)
{
    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);

    report_script(script_text);
}

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;
}

/*
 * EXPORTS_START
 * EXPORT handle_page_actions
 * EXPORTS_END
 */