{ config, pkgs, ... }: with import <stockholm/lib>; let name = "radio"; mainUser = config.users.extraUsers.mainUser; inherit (import <stockholm/lib>) genid; admin-password = import <secrets/icecast-admin-pw>; source-password = import <secrets/icecast-source-pw>; add_random = pkgs.writeDashBin "add_random" '' ${pkgs.mpc_cli}/bin/mpc add "$(${pkgs.mpc_cli}/bin/mpc ls | shuf -n1)" ''; skip_track = pkgs.writeDashBin "skip_track" '' ${add_random}/bin/add_random echo skipping: "$(${print_current}/bin/print_current)" ${pkgs.mpc_cli}/bin/mpc -q next ''; print_current = pkgs.writeDashBin "print_current" '' echo "$(${pkgs.mpc_cli}/bin/mpc current -f %file%) \ $(${pkgs.mpc_cli}/bin/mpc current -f %file% \ | ${pkgs.gnused}/bin/sed 's@.*\(.\{11\}\)\.ogg@http://www.youtube.com/watch?v=\1@')" ''; in { users.users = { "${name}" = rec { inherit name; group = name; uid = genid name; description = "radio manager"; home = "/home/${name}"; useDefaultShell = true; createHome = true; openssh.authorizedKeys.keys = [ config.krebs.users.lass.pubkey ]; }; }; users.groups = { "radio" = {}; }; krebs.per-user.${name}.packages = with pkgs; [ add_random skip_track print_current ncmpcpp mpc_cli ]; services.mpd = { enable = true; group = "radio"; musicDirectory = "/home/radio/the_playlist/music"; extraConfig = '' audio_output { type "shout" encoding "ogg" name "the_playlist" host "localhost" port "8000" mount "/radio.ogg" password "${source-password}" bitrate "128" format "44100:16:2" user "source" genre "good music" } ''; }; services.icecast = { enable = true; hostname = "config.krebs.build.host.name"; admin.password = admin-password; extraConf = '' <authentication> <source-password>${source-password}</source-password> </authentication> ''; }; krebs.iptables = { tables = { filter.INPUT.rules = [ { predicate = "-p tcp --dport 8000"; target = "ACCEPT"; } ]; }; }; systemd.timers.radio = { description = "radio autoadder timer"; wantedBy = [ "timers.target" ]; timerConfig = { OnCalendar = "*:0/1"; }; }; systemd.services.radio = let autoAdd = pkgs.writeDash "autoAdd" '' LIMIT=$1 #in secconds timeLeft () { playlistDuration=$(${pkgs.mpc_cli}/bin/mpc --format '%time%' playlist | ${pkgs.gawk}/bin/awk -F ':' 'BEGIN{t=0} {t+=$1*60+$2} END{print t}') currentTime=$(${pkgs.mpc_cli}/bin/mpc status | ${pkgs.gawk}/bin/awk '/^\[playing\]/ { sub(/\/.+/,"",$3); split($3,a,/:/); print a[1]*60+a[2] }') expr ''${playlistDuration:-0} - ''${currentTime:-0} } if test $(timeLeft) -le $LIMIT; then ${add_random}/bin/add_random fi ''; in { description = "radio playlist autoadder"; after = [ "network.target" ]; restartIfChanged = true; serviceConfig = { ExecStart = "${autoAdd} 150"; }; }; krebs.Reaktor.playlist = { nickname = "the_playlist|r"; channels = [ "#the_playlist" ]; extraEnviron = { REAKTOR_HOST = "irc.freenode.org"; }; plugins = with pkgs.ReaktorPlugins; [ (buildSimpleReaktorPlugin "skip" { script = "${skip_track}/bin/skip_track"; pattern = "^skip$"; }) (buildSimpleReaktorPlugin "current" { script = "${print_current}/bin/print_current"; pattern = "^current$"; }) ]; }; services.nginx.virtualHosts."lassul.us".locations."/the_playlist".extraConfig = let html = pkgs.writeText "index.html" '' <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>lassulus playlist</title> </head> <body> <div style="display:inline-block;margin:0px;padding:0px;overflow:hidden"> <iframe src="https://kiwiirc.com/client/irc.freenode.org/?nick=kiwi_test|?&theme=cli#the_playlist" frameborder="0" style="overflow:hidden;overflow-x:hidden;overflow-y:hidden;height:95%;width:100%;position:absolute;top:0px;left:0px;right:0px;bottom:0px" height="95%" width="100%"></iframe> </div> <div style="position:absolute;bottom:1px;display:inline-block;background-color:red;"> <audio controls autoplay="autoplay"><source src="http://lassul.us:8000/radio.ogg" type="audio/ogg">Your browser does not support the audio element.</audio> </div> <!-- page content --> </body> </html> ''; in '' default_type "text/html"; alias ${html}; ''; }