Add drawu's spotify widgets

config/default.nix

@@ -186,6 +186,7 @@
       networkmanagerapplet
       libsForQt5.ark
       libsForQt5.plasma-nm
+      playerctl
 
       git
       htop

home/default.nix

@@ -1,16 +1,16 @@
-{ pkgs, conf, ecsls, qtile, ... }:
+{ pkgs, conf, ecsls, ... }:
 {
   nixpkgs.config.allowUnfree = true;
 
   imports = [
     (import ./nvim { inherit ecsls pkgs conf; })
-    (import ./qtile { inherit qtile; })
 
     ./btop
     ./neofetch
     ./picom
     ./dunst
     ./firefox
+    ./qtile
     ./thunar
     ./tmux
     ./zsh

home/qtile/default.nix

@@ -1,7 +1,7 @@
-{ qtile, ... }:
+{ ... }:
 {
   home.file.qtile_configs = {
-    source = "${qtile}/src";
+    source = ./src;
     target = ".config/qtile";
     recursive = true;
   };

home/qtile/src/core/bar.py

@@ -12,6 +12,7 @@
     Prompt,
     QuickExit,
     Separator,
+    SpotifyNowPlaying,
     TaskList,
     Wakatime,
 )
@@ -30,6 +31,7 @@ class Bar(bar.Bar):
         TaskList,
         Separator,
         Prompt,
+        SpotifyNowPlaying,
         Wakatime,
         Battery,
         Memory,

home/qtile/src/widgets/__init__.py

@@ -10,6 +10,8 @@
     Separator,
     TaskList,
 )
+
+from .spotify import SpotifyNowPlaying
 from .wakatime import Wakatime
 
 __all__ = (
@@ -22,6 +24,7 @@
     "Prompt",
     "QuickExit",
     "Separator",
+    "SpotifyNowPlaying",
     "TaskList",
     "Wakatime",
 )

home/qtile/src/widgets/spotify.py

@@ -0,0 +1,76 @@
+"""Wakatime widget inspired by drawbu."""
+from typing import List, Optional
+import subprocess
+import urllib.request
+
+from libqtile import qtile, widget
+from libqtile.widget import base
+
+
+COVER_PATH = "/tmp/spotify-now-playing.png"
+
+
+def get_stdout(cmd: List[str]) -> str:
+    try:
+        sub = subprocess.Popen(cmd, stdout=subprocess.PIPE)
+    except FileNotFoundError:
+        return ""
+    return sub.communicate()[0].decode("utf-8").strip()
+
+
+class SpotifyCover(widget.Image):
+    def __init__(self, **config):
+        super().__init__(filename=COVER_PATH, **config)
+        self.name = "Spotify cover"
+        self.filename: Optional[str] = None
+        self.__last_cover: Optional[str] = None
+
+    def update_cover(self) -> None:
+        if self.filename is None:
+            self.img = None
+            self.bar.draw()
+            return
+
+        cover_url = get_stdout(["playerctl", "--player=spotify", "metadata", "mpris:artUrl"])
+        if cover_url == "":
+            self.__cover.remove_cover()
+            return
+        if cover_url == self.__last_cover:
+            return
+        self.__last_cover = cover_url
+        urllib.request.urlretrieve(cover_url, self.filename)
+
+        old_length = self.calculate_length()
+        self._update_image()
+
+        if self.calculate_length() == old_length:
+            self.draw()
+        else:
+            self.bar.draw()
+
+    def remove_cover(self) -> None:
+        self.filename = None
+        self.__last_cover = None
+        self.update_cover()
+
+
+class SpotifyNowPlaying(base.InLoopPollText):
+    def __init__(self, cover: SpotifyCover, **config):
+        super().__init__("", update_interval=5, qtile=qtile, **config)
+        self.name = "Spotify now playing"
+        self.__cover = cover
+
+    def poll(self) -> str:
+        is_playing = get_stdout(["playerctl", "--player=spotify", "status"])
+        if is_playing != "Playing":
+            self.__cover.remove_cover()
+            return ""
+        artist = get_stdout(["playerctl", "--player=spotify", "metadata", "artist"])
+        title = get_stdout(["playerctl", "--player=spotify", "metadata", "title"])
+        if artist == "" or title == "":
+            self.__cover.remove_cover()
+            return ""
+        if self.__cover.filename is None:
+            self.__cover.filename = COVER_PATH
+        self.__cover.update_cover()
+        return f" {artist} - {title}"