meta: Move terminal files to modules

Since all of these files do roughly the same thing (that is, configure
the system in a specific way that a separate file seems necessary), this
should reduce the overall complexity of the project tree.

modules/ncmpcpp/default.nix

@@ -0,0 +1,151 @@
+{ pkgs, ... }:
+
+{
+  home-manager.sharedModules = [{
+    services.mpd = {
+      enable = true;
+      musicDirectory = "/home/user/Music";
+    };
+
+    xdg.configFile."mpd/mpd.conf".text = ''
+      auto_update "yes"
+    '';
+
+    xdg.configFile."ncmpcpp/on-song-change.sh".source = ./on-song-change.sh;
+
+    programs.ncmpcpp = {
+      enable = true;
+
+      bindings = [
+        {
+          key = "mouse";
+          command = "dummy";
+        }
+        {
+          key = "h";
+          command = [ "previous_column" "jump_to_parent_directory" ];
+        }
+        {
+          key = "j";
+          command = "scroll_down";
+        }
+        {
+          key = "k";
+          command = "scroll_up";
+        }
+        {
+          key = "l";
+          command = [ "next_column" "enter_directory" "play_item" ];
+        }
+        {
+          key = "H";
+          command = [ "select_item" "scroll_down" ];
+        }
+        {
+          key = "J";
+          command = [ "move_sort_order_down" "move_selected_items_down" ];
+        }
+        {
+          key = "K";
+          command = [ "move_sort_order_up" "move_selected_items_up" ];
+        }
+        {
+          key = "L";
+          command = [ "select_item" "scroll_up" ];
+        }
+        {
+          key = "'";
+          command = "remove_selection";
+        }
+        {
+          key = "ctrl-u";
+          command = "page_up";
+        }
+        {
+          key = "ctrl-d";
+          command = "page_down";
+        }
+        {
+          key = "u";
+          command = "page_up";
+        }
+        {
+          key = "d";
+          command = "page_down";
+        }
+        {
+          key = "n";
+          command = "next_found_item";
+        }
+        {
+          key = "N";
+          command = "previous_found_item";
+        }
+        {
+          key = "t";
+          command = "next_screen";
+        }
+        {
+          key = "g";
+          command = "move_home";
+        }
+        {
+          key = "G";
+          command = "move_end";
+        }
+        {
+          key = "w";
+          command = "next";
+        }
+        {
+          key = "b";
+          command = "previous";
+        }
+        {
+          key = ";";
+          command = "seek_forward";
+        }
+        {
+          key = ",";
+          command = "seek_backward";
+        }
+        {
+          key = "f";
+          command = "apply_filter";
+        }
+        {
+          key = "i";
+          command = "select_item";
+        }
+        {
+          key = "x";
+          command = [
+            "delete_playlist_items"
+            "delete_browser_items"
+            "delete_stored_playlist"
+          ];
+        }
+        {
+          key = "U";
+          command = "update_database";
+        }
+        {
+          key = "m";
+          command = "add_random_items";
+        }
+      ];
+
+      settings = {
+        ncmpcpp_directory = "~/.config/ncmpcpp";
+        user_interface = "alternative";
+        autocenter_mode = "yes";
+        allow_for_physical_item_deletion = "no";
+        mouse_support = "no";
+        execute_on_song_change = "~/.config/ncmpcpp/on-song-change.sh";
+        mpd_crossfade_time = 3;
+      };
+    };
+  }];
+
+  environment.systemPackages = with pkgs; [ mpc-cli ];
+}

modules/ncmpcpp/on-song-change.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+
+music_dir="$HOME/Music"
+fallback_image="$HOME/a.jpg"
+
+main () {
+    find_cover 2>/dev/null
+    send       2>/dev/null
+}
+
+find_cover () {
+    ext="$(mpc --format %file% current | sed 's/^.*\.//')"
+    if [ "$ext" != "flac" ]; then
+        ffmpeg -y -i "$(mpc --format "$music_dir"/%file% | head -n 1)" \
+        /tmp/cover.jpg && cover_path="/tmp/cover.jpg" && return
+    else
+        # ffmpeg doesn't work for flacs
+        metaflac --export-picture-to=/tmp/cover.jpg \
+        "$(mpc --format "$music_dir"/%file% current)" && cover_path="/tmp/cover.jpg" && return
+    fi
+    #without embedded images this is used as a fallback
+    file="$music_dir/$(mpc --format %file% current)"
+    album="${file%/*}"
+    #search for cover image
+    cover_path=$(find "$album"  -maxdepth 1 | grep -m 1 ".*\.\(jpg\|png\|gif\|bmp\)")
+}
+
+send () {
+    notify-send -i "${cover_path:-$fallback_image}" "Now Playing" "$(mpc current)"
+}
+
+main