# ./modules/users/psljr/fish.nix
# Configure fish for user psljr

{ config, pkgs, ... }:

{
  home-manager.users.psljr = { pkgs, ... }: {
    programs.fish = {
      enable = true;
      
      functions = {
        fish_prompt = {
          body = ''
            set -l last_pipestatus $pipestatus
            set -lx __fish_last_status $status # Export for __fish_print_pipestatus.
            set -l normal (set_color normal)
            set -q fish_color_status
            or set -g fish_color_status red

            # Color the prompt differently when we're root
            set -l color_cwd $fish_color_cwd
            set -l suffix '>'
            if functions -q fish_is_root_user; and fish_is_root_user
              if set -q fish_color_cwd_root
                set color_cwd $fish_color_cwd_root
              end
              set suffix '#'
            end

            # Change the prompt when inside a nix-shell
            set -l nix_shell_info (
              if test -n "$IN_NIX_SHELL"
                echo -n "<nix-shell> "
              end
            )

            # Write pipestatus
            # If the status was carried over (if no command is issued or if `set` leaves the status untouched), don't bold it.
            set -l bold_flag --bold
            set -q __fish_prompt_status_generation; or set -g __fish_prompt_status_generation $status_generation
            if test $__fish_prompt_status_generation = $status_generation
              set bold_flag
            end
            set __fish_prompt_status_generation $status_generation
            set -l status_color (set_color $fish_color_status)
            set -l statusb_color (set_color $bold_flag $fish_color_status)
            set -l prompt_status (__fish_print_pipestatus "[" "]" "|" "$status_color" "$statusb_color" $last_pipestatus)

            echo -n -s ' ' (prompt_login)' ' (set_color -o ff9955) $nix_shell_info (set_color $color_cwd) (prompt_pwd) $normal (fish_vcs_prompt) $normal " " $prompt_status $suffix " "
          '';
        };
      };
    };
  };
}