/* ~/.config/pentadactyl/plugins/launchv.js

    From Earnestly.

    Quick function to help reduce duplication in my config, thanks mostly to
    holomorph who started pretty much all of this.

    Requires: livestreamer, mpv, youtube-dl.

    Command:
    * :launchv  Attempts to start the current buffer URL as a video.

    Hint:
    * ;q        Likewise but for the selected hint.
*/

function launchv(target){
    // Escape anything which could be used to inject shell commands before
    // passing it to the commands.
    var uri = target.replace(/([$`"\\])/g, "\\$1");
    var mpv = "mpv --loop-file --cache-file=TMP";

    function exec(launcher, uri){
        // If we're using pentadactyl then echo the action as io.system won't.
        if(typeof dactyl !== "undefined")
            dactyl.echomsg("Executing: " + launcher + " \"" + uri + "\"");

        return io.system(launcher + ' "' + uri + '" &');
    }

    // Filter certain urls to more appropriate programs
    if(uri.match(/twitch\.tv\/.*\/[bc]\/[0-9]+/))
        exec(mpv, uri);

    else if(uri.match(/hitbox\.tv\/video\/[0-9]+/))
        exec(mpv, uri);

    else if(uri.match(/(hitbox|twitch)\.tv/))
        exec("livestreamer", uri);

    // For everything else.
    else
        exec(mpv, uri);
}

hints.addMode("q", "Launch video from hint", function(elem, loc) launchv(loc));
commands.add(["launchv", "lv"], "Launches current buffer video", function(args){launchv(buffer.URL);});