nix-config/modules/tmux/extra-config.nix

{
  flake.modules.homeManager.base.programs.tmux.extraConfig = ''
    set-option -g status-keys "vi"
    set-option -sa terminal-features "''${TERM}:RGB"

    bind -n S-Left resize-pane -L 2
    bind -n S-Right resize-pane -R 2
    bind -n S-Down resize-pane -D 1
    bind -n S-Up resize-pane -U 1

    bind -n C-Left resize-pane -L 10
    bind -n C-Right resize-pane -R 10
    bind -n C-Down resize-pane -D 5
    bind -n C-Up resize-pane -U 5

    # Status line customisation
    set-option -g status-position top
    set-option -g status-left ""
    set-option -g status-right " #{session_name}"
    set-option -g status-right-length 100
    set-option -g status-style "fg=#7C7D83 bg=default"
    set-option -g window-status-activity-style none

    bind c new-window -c "#{pane_current_path}"

    set -g base-index 1
    set -g pane-base-index 1
    set -g renumber-windows on

    # Break a pane into a new window.
    bind-key b break-pane -d
    bind-key J command-prompt -p "join pane from: "  "join-pane -h -s '%%'"

    bind-key C-j choose-tree

    set-window-option -g mode-keys vi
    bind -T copy-mode-vi v send-keys -X begin-selection
    bind -T copy-mode-vi y send-keys -X copy-pipe-and-cancel 'xclip -in -selection clipboard'

    bind C-j split-window -v "tmux list-sessions | sed -E 's/:.*$//' | grep -v \"^$(tmux display-message -p '#S')\$\" | fzf --reverse | xargs tmux switch-client -t"

    bind-key K run-shell 'tmux switch-client -n \; kill-session -t "$(tmux display-message -p "#S")" || tmux kill-session'

    # Allow clearing screen with ctrl-l by using <prefix> C-l
    bind C-l send-keys "C-l"
    bind C-k send-keys "C-k"

    # Enable mouse support.
    setw -g mouse on

    # Remove delay when switching Vim modes.
    set -sg escape-time 0

    set-option -g pane-active-border-style "fg=#1f2335"
    set-option -g pane-border-style "fg=#1f2335"

    # Vim-like pane navigation.
    bind ^ last-window
    bind h select-pane -L
    bind j select-pane -D
    bind k select-pane -U
    bind l select-pane -R

    bind-key -r f run-shell "tmux new-window tmux-sessionizer"

    bind-key -r D new-window -c "#{pane_current_path}" "[[ -e TODO.md ]] && nvim TODO.md || nvim ~/Documents/notes/todo.txt"
    bind-key -r W split-window -h -c ~/Documents/notes "nvim '+Telescope find_files'"
  '';
}