// ==UserScript==
// @name        Compass QoL Enhancer
// @namespace   blankie-scripts
// @match       http*://*.compass.education/*
// @version     1.0.0
// @author      blankie
// @description A userscript that adds small but useful features for Compass, such as the ability to close windows by clicking on the background
// @inject-into page
// @run-at      document-end
// ==/UserScript==

"use strict";

let observer = new MutationObserver(function(mutations) {
    for (let mutation of mutations) {
        if (mutation.type !== "childList") {
            continue;
        }
        for (let node of mutation.addedNodes) {
            handleNewNode(node);
        }
    }
});
observer.observe(document.body, {childList: true, subtree: true});

function handleNewNode(node) {
    if (node.nodeType !== 1) {
        return;
    }

    if (node.localName === "div" && node.classList.contains("ext-cal-evt")) {
        handleNewCalendarEvent(node);
    } else if (node.classList.contains("ext-cal-hd-ct")) {
        // learning tasks need to be handled seperately for some reason
        for (let element of node.querySelectorAll("div.ext-cal-evt")) {
            handleNewCalendarEvent(element);
        }
    } else if (window.location.pathname === "/Organise/Activities/Activity.aspx" && node.classList.contains("activityPage__tabPanel")) {
        for (let tab of node.querySelectorAll(".x-tab")) {
            tab.addEventListener("click", function() {
                handleActivityTabClick(tab);
            }, {passive: true});
        }
    }
}

document.body.addEventListener("click", function(event) {
    // Add the ability to close windows by clicking on the background
    // 0px check to make sure that the mask is masking the entire background and not just a small subsection (e.g. a calendar)
    if (event.target.classList.contains("x-mask") && event.target.style.left === "0px") {
        document.querySelector(".x-window-closable.x-window-active .x-tool-close").click();
    }
}, {passive: true});

function handleNewCalendarEvent(element) {
    // Turn each calendar event into a link so that Link Hints can recognize it
    let a = document.createElement("a");
    for (let attr of element.attributes) {
        a.setAttribute(attr.name, attr.value);
    }
    // fix learning tasks shrinking for some reason
    a.style.display = "block";
    a.replaceChildren(...element.childNodes);
    let preventCompassHandler = false;

    if (a.classList.contains("activity-type-1")) {
        // Add a link for activities/"standard classes"
        // missing targetUserId parameter, shouldn't matter too much if you're a student
        let eventId = / calendar-event-(\d+) /.exec(a.className)[1];
        a.href = `/Organise/Activities/Activity.aspx#session/${eventId}`;
        preventCompassHandler = true;
    } else if (a.classList.contains("activity-type-10")) {
        // Add a link for learning tasks
        // missing userId parameter, shouldn't matter too much if you're a student
        a.href = "/Records/User.aspx#learningTasks";
        preventCompassHandler = true;
    }

    // prevent ctrl-clicking from changing the current tab
    // it seems like the link thing actually effectively killed the default handler anyway
    if (preventCompassHandler) {
        a.addEventListener("click", function(event) {
            event.stopImmediatePropagation();
        }, {passive: true});
    }

    element.replaceWith(a);
}

function handleActivityTabClick(element) {
    // Automatically add or remove &openLearningTaskTab when a tab is clicked
    let matches = /^(#(?:session|activity)\/\d+)(?:&openLearningTaskTab)?$/.exec(window.location.hash);
    if (!matches) {
        return;
    }

    let newHash = matches[1];
    if (element.classList.contains("sel-learning-tasks-tab")) {
        newHash += "&openLearningTaskTab";
    }

    if (newHash !== window.location.hash) {
        history.pushState("", "", newHash);
    }
}

// Suppress that annoying barebones context menu that only has Copy
// why is it not obvious that you can just hold ctrl or shift to suppress it???
// i know it's compass' fault but i'm still frustrated
// https://stackoverflow.com/a/10815581
let originalOn = unsafeWindow.CKEDITOR.dom.domObject.prototype.on;
unsafeWindow.CKEDITOR.dom.domObject.prototype.on = function(type, listener) {
    if (type !== "contextmenu") {
        return originalOn.apply(this, arguments);
    }
};