// ==UserScript==
// @name         KamTape Downloader
// @namespace    kamtape
// @version      7.0
// @match        https://www.kamtape.com/watch?v=*
// @match        https://www.kamtape.com/results*
// @grant        none
// @run-at       document-end
// ==/UserScript==

(function() {
    'use strict';

    function sanitize(name) {
        return name.replace(/[\/\\?%*:|"<>]/g, "_");
    }

    function createDownloadButton(videoId, title) {
        const button = document.createElement("button");
        button.textContent = "Download Video";
        button.style.marginLeft = "6px";

        button.onclick = function() {
            let filename = sanitize(title || "video") + ".webm";

            const link = document.createElement("a");
            link.href = "https://www.kamtape.com/get_video.php?video_id=" + videoId + "&webm=1";
            link.download = filename;

            document.body.appendChild(link);
            link.click();
            document.body.removeChild(link);
        };

        return button;
    }

    function insertWatchButton() {
        const videoId = new URLSearchParams(window.location.search).get("v");
        if (!videoId) return;

        if (document.getElementById("kamtape-download-row")) return;

        const firstActionsDiv = document.querySelector("#actionsAndStatsDiv .actionsDiv");
        if (!firstActionsDiv) return;

        const actionRow = document.createElement("div");
        actionRow.className = "actionRow";
        actionRow.id = "kamtape-download-row";
        actionRow.style.marginTop = "10px";

        const h1 = document.querySelector("h1");
        const title = h1 ? h1.textContent.trim() : "video";

        actionRow.appendChild(createDownloadButton(videoId, title));
        firstActionsDiv.appendChild(actionRow);
    }

    function insertSearchButtons() {

        const infos = document.querySelectorAll(".vinfo");

        infos.forEach(function(info) {

            if (info.querySelector(".kamtape-download")) return;

            const link = info.querySelector(".vtitle a");
            if (!link) return;

            const match = link.href.match(/v=([^&]+)/);
            if (!match) return;

            const videoId = match[1];
            const title = link.textContent.trim();

            const button = createDownloadButton(videoId, title);
            button.className = "kamtape-download";
            button.style.display = "block";

            const ratings = info.querySelectorAll(".rating");
            const rating = ratings[ratings.length - 1];

            if (rating && rating.parentNode) {
                rating.parentNode.insertBefore(button, rating.nextSibling);
            } else {
                info.appendChild(button);
            }
        });
    }

    function run() {
        insertWatchButton();
        insertSearchButtons();
    }

    run();
    setTimeout(run, 500);

})();