video downloader

background.js

// Video Infos holen
var jsonString = $(".player_viewport").find("DIV:nth-child(4)").attr("data-jsb");
var videoObj = $.parseJSON(jsonString);

if (videoObj.playlist.videos.length == 1) {
    var sources = videoObj.selected_video.sources;

    // Download-Menü erstellen
    createDownloadMenu(".mod_player > .service_footer", "Sendung herunterladen");

    // Video-Quelle mit bester Auflösung suchen
    $.each(sources, function(index, source) {
	if (source.delivery == "progressive" &&
		source.protocol == "http"
		) {
	    source.name = videoObj.selected_video.title;
	    addSourceToDownloadMenu(".mod_player > .service_footer", source);
	}
    });
} else if (videoObj.playlist.videos.length > 1) {
    var playListItems = $(".base_list_item");
    $.each(playListItems, function(index, item) {
	var jsonString = $(item).find(".service_link_play").attr("data-jsb");
	var itemObj = $.parseJSON(jsonString);
	var sources = itemObj.video.sources;
	createDownloadMenu($(item).find(".service_footer"), "herunterladen");
	$.each(sources, function(index, source) {
	    if (source.delivery == "progressive" &&
		    source.protocol == "http"
		    ) {
		source.name = itemObj.video.title;
		addSourceToDownloadMenu($(item).find(".service_footer"), source);
	    }
	});
    });
}

// DropdownMenü schließen
$(document).click(function(event) {
    if ($(event.target).closest(".downloadBox").size() == 0) {
	$(".downloadSources").slideUp();
    }
});


function createDownloadMenu(target, title) {
    // Vorhandenen Service-Button laden und kopieren
    var serviceLinkTemplate = $(target).find("A").first();
    var downloadServiceLink = $(serviceLinkTemplate).clone();
    // und danach anpassen und einfügen
    $(downloadServiceLink).attr("href", "#");
    $(downloadServiceLink).find(".icon_wrapper").contents().last()[0].textContent = title;
    $(downloadServiceLink).addClass("service_link_download");
    $(downloadServiceLink).removeClass("service_link_send");
    $(downloadServiceLink).removeClass("service_link_play");
    $(target).append("<span class='downloadBox'></span>");
    $(target).find(".downloadBox").prepend(downloadServiceLink);
    $(target).find(".downloadBox").append("<ul class='downloadSources' style='display: none;'></ul>");
    $(target).find(".service_link_download").on("click", function(event) {
	event.preventDefault();
	$(target).find(".downloadSources").slideToggle();
    });
}

function addSourceToDownloadMenu(target, source) {
    // Anpassen und einfügen
    var sourceElement = $("<li><a href=''></a></li>");
    $(sourceElement).find("A").attr("href", source.src);

    var sourceName = source.quality_string.toLowerCase().replace(/\b[a-z]/g, function(letter) {
	return letter.toUpperCase();
    });

    var fileExtension = getFileExtension(source.src);
    $(sourceElement).find("A").append('Qualität: ' + sourceName + " (" + fileExtension + ")");
    $(sourceElement).find("A").attr("download", source.name);

    $(target).find(".downloadSources").prepend(sourceElement);
}

function getFileExtension(filename) {
    return (/[.]/.exec(filename)) ? /[^.]+$/.exec(filename) : undefined;
}