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path: root/content/activity_info_server.js
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/**
 * part of Hachette
 * Informing about activities performed by content script (script injection,
 * script blocking).
 *
 * Copyright (C) 2021 Wojtek Kosior
 * Redistribution terms are gathered in the `copyright' file.
 */

/*
 * IMPORTS_START
 * IMPORT listen_for_connection
 * IMPORT CONNECTION_TYPE
 * IMPORT set_repo_query_repos
 * IMPORT set_repo_query_callback
 * IMPORTS_END
 */

var activities = [];
var ports = new Set();

function report_activity(name, data)
{
    const activity = [name, data];
    activities.push(activity);

    for (const port of ports)
	port.postMessage(activity);
}

function report_script(script_data)
{
    report_activity("script", script_data);
}

function report_settings(settings)
{
    const [pattern, settings_data, repos] = settings;
    set_repo_query_repos(repos);

    report_activity("settings", settings);
}

function report_repo_query_result(result)
{
    report_activity("repo_query_result", result);
}

function trigger_repo_query()
{
    set_repo_query_callback(report_repo_query_result);
}

function new_connection(port)
{
    console.log("new activity info connection!");

    ports.add(port);

    for (const activity of activities)
	port.postMessage(activity);

    /*
     * So far the only thing we expect to receive is repo query order. Once more
     * possibilities arrive, we will need to complicate this listener.
     */
    port.onMessage.addListener(trigger_repo_query);

    port.onDisconnect.addListener(() => ports.delete(port));
}

function start_activity_info_server()
{
    listen_for_connection(CONNECTION_TYPE.ACTIVITY_INFO, new_connection);
}

/*
 * EXPORTS_START
 * EXPORT start_activity_info_server
 * EXPORT report_script
 * EXPORT report_settings
 * EXPORTS_END
 */