aboutsummaryrefslogtreecommitdiff
path: root/tmux.nix
blob: 9ed5ae74fabc83676e397e7f9d2d71cefe678008 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
{
  lib,
  config,
  pkgs,
  ...
}: let
  cfg = config.collinux.terminal.programs.tmux;

  scriptsDir = "~/.config/tmux/scripts";

  scripts.battery = ''
    energy_now=$(cat /sys/class/power_supply/BAT0/energy_now)
    energy_full=$(cat /sys/class/power_supply/BAT0/energy_full)
    percentage=$((energy_now * 100 / energy_full))
    printf "%.0f%%" "$percentage"
  '';

  broot_sessionizer_config = {
    imports = ["~/.config/broot/conf.toml"];
    quit_on_last_cancel = true;
    verbs = [
      {
        invocation = "sessionizer";
        external = ''bash -c -- "${scriptsDir}/sessionizer.sh '{file}'"'';
        key = "enter";
        apply_to = "directory";
        leave_broot = true;
      }
    ];
  };

  scripts.sessionizer = ''
    selected="$1"

    session_name="$(basename "$selected" | tr '.' '_')"

    # if the session doesn't exist, create it
    if tmux list-sessions -F '#{session_name}' | grep -vqx "$session_name"; then
      tmux new-session -ds "$session_name" -c "$selected"
      tmux set-option -t "$session_name" @default-path "$selected"
    fi

    # switch to it
    tmux switch -t "$session_name"
  '';

  scripts.cleanSessions = ''
    current="$(tmux display -p '#{session_name}')"

    tmux list-sessions -F '#{session_name}' | while read -r line; do
      if [[ "$line" != "$current" && "$line" =~ ^[[:digit:]]+$ ]]; then
        tmux kill-session -t "$line"
      fi
    done
  '';

  scripts.bar = ''
    text="#c6d0f5"
    text_dark="#7F849C"
    blue="#b3befe"
    green="#a6d189"
    red="#f38ba8"
    bg_dark="#181825"
    bg_light="#1E1E2E"

    tset() {
      tmux set -gq "$@"
    }

    tset status on

    tset status-position bottom
    tset status-justify absolute-centre
    tset status-bg $bg_light

    tset status-left-style fg=$green,bold
    tset status-left " #{client_session}"

    tset window-status-style fg=$text_dark
    tset window-status-format " #I "
    tset window-status-current-style fg=$blue,bold
    tset window-status-current-format " #I "
    tset window-status-separator ""

    tset status-right "#[fg=$text_dark]%l:%M  #[fg=$red]#(${scriptsDir}/battery.sh) "

    ## pane borders
    tset pane-border-style fg=$bg_dark,bg=$bg_dark
    tset pane-active-border-style fg=$bg_dark,bg=$bg_dark

    ## pane backgrounds
    # Set the foreground/background color for the active window
    tset window-active-style bg=$bg_light

    # Set the foreground/background color for all other windows
    tset window-style bg=$bg_dark
  '';

  scripts.paneSplit = ''
    #!/usr/bin/env bash
    width=$(tmux display -p "#{pane_width}")
    height=$(tmux display -p "#{pane_height}")

    if (( $(echo "$width / $height > 2.5" | bc -l) )); then
      tmux split-window -h "$@"
    else
      tmux split-window -v "$@"
    fi
  '';

  # pull up the docs for a specific tmux command
  scripts.tmuxDoc = ''
    usage=$(tmux list-commands -F "#{command_list_name} #{command_list_usage}" "$1")

    man tmux  | awk -v usage="$usage" '
      index($0, usage) > 0 { found=1 }
      found {
        print
        if ($0 == "") exit
      }
    '
  '';

  # replaces `C-b :` with a fancy fzf popup menu with completion and history
  scripts.fzfExec = ''
    all_cmds() {
      tmux list-commands -F $'#{command_list_name}#{?command_list_alias,\n#{command_list_alias},}'
    }

    selected_cmd=$(all_cmds | fzf --bind 'enter:accept-or-print-query,tab:replace-query,alt-backspace:clear-query' --prompt : --preview "~/.config/tmux/scripts/tmux-doc.sh $(printf '{}' | cut -d' ' -f1)")
    test -z "$selected_cmd" && exit

    tmux $(echo "$selected_cmd" | sed "s@~@$HOME@g")
  '';

  plugins.fuzzback = builtins.fetchGit {
    url = "https://github.com/roosta/tmux-fuzzback";
    rev = "0aafeeec4555d7b44a5a2a8252f29c238d954d59";
  };

  tmux-conf = ''
    set -g mouse on

    # bell
    set -g visual-activity off
    set -g visual-bell off
    set -g visual-silence off
    setw -g monitor-activity off
    set -g bell-action none

    # Panes
    bind-key -n C-w kill-pane

    bind -n C-Enter run-shell "${scriptsDir}/split.sh -c '#{?@default-path,#{@default-path},#{pane_current_path}}'"

    unbind -n MouseDown3Pane ## disable right click menu
    bind-key -n M-z resize-pane -Z ## Pane zoom
    set -g allow-rename on

    # Windows
    bind-key -n C-t     new-window -c '#{?@default-path,#{@default-path},#{pane_current_path}}'
    bind-key -n C-Tab   next-window
    bind-key -n C-S-Tab previous-window # doesn't work in foot :(
    set -g renumber-windows on
    set -g base-index 1

    # Sessions
    bind-key -n C-f run-shell "${scriptsDir}/minibuffer.sh -d '$HOME' 'broot --conf ~/.config/tmux/broot/sessionizer.toml'"

    # Statusbar
    run-shell "${scriptsDir}/bar.sh"

    set-hook -ag client-detached 'run-shell ${scriptsDir}/clean-sessions.sh'
    set-hook -ag client-session-changed 'run-shell ${scriptsDir}/clean-sessions.sh'

    bind-key -n C-g display-popup -E -w 80% -h 80% -x C -y C -d "#{?@default-path,#{@default-path},#{pane_current_path}}" "${pkgs.lazygit}/bin/lazygit"
    bind-key o display-popup -E -w 70% -h 70% -x C -y C "hx ~/Documents/todo.txt"

    # Scrollback
    set -g @fuzzback-popup 1
    bind-key -T copy-mode -n / run-shell "${plugins.fuzzback}/scripts/fuzzback.sh"

    # Replace command prompt with fzf
    bind-key -T prefix : run-shell "${scriptsDir}/minibuffer.sh -h 10 '${scriptsDir}/fzf-exec.sh'"
  '';

  scripts.minibuffer = ''
    window_height="$(tmux display -p '#{window_height}')"
    tmux display-popup -EB \
      -w 100% -h 16 \
      -x 0 -y "$(($window_height + 1))" \
      "$@"
  '';
in
  lib.mkIf cfg.enable {
    hjem.users."${config.collinux.user.name}" = {
      files = let
        e = text: {
          inherit text;
          executable = true;
        };
      in {
        ".config/tmux/scripts/battery.sh" = e scripts.battery;
        ".config/tmux/scripts/sessionizer.sh" = e scripts.sessionizer;
        ".config/tmux/scripts/clean-sessions.sh" = e scripts.cleanSessions;
        ".config/tmux/scripts/bar.sh" = e scripts.bar;
        ".config/tmux/scripts/split.sh" = e scripts.paneSplit;
        ".config/tmux/scripts/minibuffer.sh" = e scripts.minibuffer;
        ".config/tmux/scripts/tmux-doc.sh" = e scripts.tmuxDoc;
        ".config/tmux/scripts/fzf-exec.sh" = e scripts.fzfExec;

        ".config/tmux/broot/sessionizer.toml" = {
          generator = (pkgs.formats.toml {}).generate "sessionizer.toml";
          value = broot_sessionizer_config;
        };

        ".config/tmux/tmux.conf".text = tmux-conf;
      };

      packages = [pkgs.tmux];
    };
  }