{ config, lib, pkgs, ... }:
let tide_conf = builtins.readFile ./tide_config.fish; in
{
  programs.zoxide.enableFishIntegration = true;
  programs.kitty.shellIntegration.enableFishIntegration = true;
  programs.fzf = {
    enable = true;
    enableFishIntegration = false;
  };

  programs.fish = {
    enable = true;

    plugins = [
      {
        # https://github.com/lilyball/nix-env.fish
        name = "nix-env";
        src = pkgs.fetchFromGitHub {
          owner = "lilyball";
          repo = "nix-env.fish";
          rev = "7b65bd228429e852c8fdfa07601159130a818cfa";
          sha256 = "sha256-RG/0rfhgq6aEKNZ0XwIqOaZ6K5S4+/Y5EEMnIdtfPhk=";
        };

      }
      {
        # https://github.com/IlanCosman/tide
        name = "tide";
        src = pkgs.fetchFromGitHub {
          owner = "IlanCosman";
          repo = "tide";
          rev = "13fa55ef109009e04e6e5fabda0d0e662b4e6315";
          sha256 = "sha256-+6LdcFLqDzUcCmBoKO4LDH5+5odqVqUb1NmEVNMEMjs=";
        };
      }
      {
        # https://github.com/PatrickF1/fzf.fish
        name = "fzf";
        src = pkgs.fishPlugins.fzf-fish.src;
      }
    ];

    shellInit = ''
      set --universal fish_greeting
      set -g -x EDITOR "emacsclient -a \"emacs -nw\""
      set -g -x ALTERNATE_EDITOR "vim"
      set -g -x TERMINAL "kitty"
      set -g -x LESS "--ignore-case --QUIET --RAW-CONTROL-CHARS"
      set -g -x MANPAGER "sh -c 'col -bx | bat -l man -p'"
      set -g -x MANROFFOPT "-c"
      set -g -x BAT_THEME "ansi"

      fish_add_path --path ~/.dotfiles/bin ~/.local/bin ~/bin

      # If running under kitty, fake the term for ssh to avoid
      # having to install terminfo on remote machine
      function ssh --wraps ssh
        if test $TERM = xterm-kitty
          set --function --export TERM xterm-256color
        end
        command ssh $argv
      end

      function mkenv --description "Initialize a devenv environment or configure its .envrc"
          argparse --name=mkenv h/here -- $argv
          or return 1 # Exit if parsing fails

          # Default target directory is the current directory.
          set -l target_dir "."

          # Check if we are inside a Git repository's working tree.
          if git rev-parse --is-inside-work-tree >/dev/null 2>&1
              if not set -q _flag_here; and not test -f devenv.nix
                  set target_dir (git rev-parse --show-toplevel)
              end
          end

          pushd "$target_dir"

          # Check for the existence of the primary devenv configuration file.
          if not test -f "devenv.nix"
              devenv init
          else
              # If devenv.nix exists, check for the direnv configuration file.
              if not test -f ".envrc"
                  echo 'eval "$(devenv direnvrc)"' > .envrc
                  direnv allow
              end
          end

          if test -f "devenv.nix"
              emacsclient devenv.nix
          else
              echo -e "\e[31mCould not open devenv.nix as it was not created.\e[0m"
          end
      end

      if test -f $HOME/.cargo/env.fish
        source "$HOME/.cargo/env.fish"
      end

      if test -f $HOME/.local.fish
        source $HOME/.local.fish
      end

      ${builtins.readFile ./tide_config.fish}
      '';

    shellAliases = {
      ec = "emacsclient -n --alternate-editor=\"emacs -nw\"";
      pubip = "curl icanhazip.com";
    };
  };
}