feat(waybar): Added left side bar

user/kirill/modules/waybar.nix

@@ -1,4 +1,157 @@
-{ osConfig, config, pkgs, lib, ... }: {
+{ osConfig, config, pkgs, lib, ... }: let
+  c = config.lib.stylix.colors.withHashtag;
+
+  # ---- Left edge power bar (separate waybar instance) ----
+  leftWidth = 50;
+
+  networkSpeed = pkgs.writeShellApplication {
+    name = "network-speed";
+    runtimeInputs = [ pkgs.coreutils pkgs.gawk pkgs.iproute2 ];
+    text = ''
+      set -euo pipefail
+      state=/tmp/waybar-network-speed
+
+      iface=$(ip route show default | awk '{print $5; exit}')
+      if [ -z "$iface" ]; then
+        iface=$(awk 'NR > 2 && $1 != "lo:" { sub(":", "", $1); print $1; exit }' /proc/net/dev)
+      fi
+      [ -z "$iface" ] && exit 0
+
+      read -r rx tx < <(awk -v i="$iface" '$1 ~ i":" { print $2, $10 }' /proc/net/dev)
+      if [ -f "$state" ]; then
+        read -r prx ptx ts < "$state"
+        now=$(date +%s)
+        dt=$((now - ts)); [ "$dt" -lt 1 ] && dt=1
+        down=$(((rx - prx) / dt)); [ "$down" -lt 0 ] && down=0
+        up=$(((tx - ptx) / dt)); [ "$up" -lt 0 ] && up=0
+        echo " $(numfmt --to=iec --suffix=B/s "$down") $(numfmt --to=iec --suffix=B/s "$up")"
+      fi
+      printf '%s %s %s\n' "$rx" "$tx" "$(date +%s)" > "$state"
+    '';
+  };
+
+  leftbarJson = {
+    collapsed = pkgs.writeText "leftbar-collapsed.json" (builtins.toJSON {
+      layer = "top";
+      exclusive = false;
+      position = "left";
+      width = 1;
+      spacing = 0;
+      modules-left = [ "custom/hidden" ];
+      modules-center = [ ];
+      modules-right = [ ];
+      "custom/hidden" = {
+        format = "";
+      };
+    });
+
+    expanded = pkgs.writeText "leftbar-expanded.json" (builtins.toJSON {
+      layer = "top";
+      exclusive = false;
+      position = "left";
+      width = leftWidth;
+      spacing = 0;
+      modules-left = [ "custom/network-speed" "disk" ];
+      modules-center = [ ];
+      modules-right = [ "custom/restart" "custom/power" ];
+      "custom/power" = {
+        format = "";
+        on-click = "systemctl poweroff";
+        tooltip = false;
+      };
+      "custom/restart" = {
+        format = "";
+        on-click = "systemctl reboot";
+        tooltip = false;
+      };
+      "custom/network-speed" = {
+        exec = "${lib.getExe networkSpeed}";
+        interval = 2;
+        rotate = 90;
+        tooltip = false;
+      };
+      disk = {
+        interval = 30;
+        rotate = 90;
+        format = "{percentage_free}%";
+        paths = [ "/" ];
+      };
+    });
+  };
+
+  leftbarCss = {
+    collapsed = pkgs.writeText "leftbar-collapsed.css" ''
+      window#waybar {
+        background: ${c.base0B};
+        min-width: 1px;
+      }
+    '';
+
+    expanded = pkgs.writeText "leftbar-expanded.css" ''
+      window#waybar {
+        background: transparent;
+        min-width: ${toString leftWidth}px;
+        font-family: "Symbols Nerd Font Mono", "Monocraft", "Font Awesome 7 Free";
+        font-weight: bold;
+        font-size: 1.3em;
+      }
+
+      #custom-power,
+      #custom-restart,
+      #custom-network-speed,
+      #disk {
+        background: ${c.base00};
+        color: ${c.base05};
+        border-radius: 6px;
+        min-height: 34px;
+        margin: 4px;
+      }
+
+      #custom-power:hover,
+      #custom-restart:hover,
+      #custom-network-speed:hover,
+      #disk:hover {
+        background: ${c.base0B};
+        color: ${c.base00};
+      }
+    '';
+  };
+
+  leftbarHover = pkgs.writeShellApplication {
+    name = "leftbar-hover";
+    runtimeInputs = [ pkgs.coreutils pkgs.systemd ];
+    text = ''
+      set -euo pipefail
+      hyprctl="${(config.wayland.windowManager.hyprland.package or pkgs.hyprland)}/bin/hyprctl"
+      rt="''${XDG_RUNTIME_DIR:-/run/user/$(id -u)}"
+      json="$rt/leftbar.json"
+      css="$rt/leftbar.css"
+      state=collapsed
+
+      cp -f "${leftbarJson.collapsed}" "$json"
+      cp -f "${leftbarCss.collapsed}" "$css"
+
+      while true; do
+        pos="$($hyprctl cursorpos 2>/dev/null)" || pos=""
+        x="''${pos%%,*}"
+        if [ -n "$x" ]; then
+          if [ "$state" != expanded ] && [ "$x" -ge 0 ] && [ "$x" -le 1 ]; then
+            state=expanded
+            cp -f "${leftbarJson.expanded}" "$json"
+            cp -f "${leftbarCss.expanded}" "$css"
+            systemctl --user restart waybar-left || true
+          elif [ "$state" != collapsed ] && [ "$x" -gt ${toString leftWidth} ]; then
+            state=collapsed
+            cp -f "${leftbarJson.collapsed}" "$json"
+            cp -f "${leftbarCss.collapsed}" "$css"
+            systemctl --user restart waybar-left || true
+          fi
+        fi
+        sleep 0.05
+      done
+    '';
+  };
+in {
   home.packages = with pkgs; [
     #Fonts
     font-awesome
@@ -323,4 +476,35 @@
     in builtins.readFile cssFile;
   };
 
+  # Left edge bar: own waybar instance with its own config/style,
+  # toggled between 1px accent strip and 8px button bar by the hover daemon.
+  xdg.configFile."waybar/leftbar-collapsed.json".source = leftbarJson.collapsed;
+  xdg.configFile."waybar/leftbar-expanded.json".source = leftbarJson.expanded;
+  xdg.configFile."waybar/leftbar-collapsed.css".source = leftbarCss.collapsed;
+  xdg.configFile."waybar/leftbar-expanded.css".source = leftbarCss.expanded;
+
+  systemd.user.services.waybar-left = {
+    Unit = {
+      Description = "Waybar left edge bar";
+      After = [ "waybar-left-hover.service" ];
+      Wants = [ "waybar-left-hover.service" ];
+    };
+    Service = {
+      ExecStart = "${lib.getExe pkgs.waybar} -c %t/leftbar.json -s %t/leftbar.css";
+      Restart = "on-failure";
+      RestartSec = 2;
+    };
+    Install.WantedBy = [ "default.target" ];
+  };
+
+  systemd.user.services.waybar-left-hover = {
+    Unit.Description = "Waybar left edge bar hover daemon";
+    Service = {
+      ExecStart = "${lib.getExe leftbarHover}";
+      Restart = "on-failure";
+      RestartSec = 2;
+    };
+    Install.WantedBy = [ "default.target" ];
+  };
+
 }