{
  lib,
  pkgs,
  ...
}:
let
  zshSourceCommon = ./zsh/common;

  isDarwin = pkgs.stdenv.hostPlatform.isDarwin;
  isLinux = pkgs.stdenv.hostPlatform.isLinux;
in
{
  imports = [
    (import ./nix-init-scripts.nix {
      inherit lib pkgs;
    })
  ];

  home.packages = with pkgs; [
    awscli2
    kubectl
    nixd
    viu
  ];

  # Let Home Manager install and manage itself.
  programs.home-manager.enable = true;

  programs.bat = {
    enable = true;
  };

  programs.direnv = {
    enable = true;
    nix-direnv.enable = true;
  };

  programs.fzf = {
    enable = true;
    enableZshIntegration = true;
  };

  programs.htop = {
    enable = true;
  };

  programs.k9s = {
    enable = true;
    settings = {
      k9s = {
        refreshRate = 2;
        ui = {
          logoless = true;
          headless = true;
          skin = "darkerbg";
        };
        logger = {
          tail = 1000;
          sinceSeconds = 60 * 30;
          fullScreen = true;
          showtime = true;
        };
      };
    };

    skins = {
      darkerbg = {
        k9s = {
          body = {
            bgColor = "#333";
          };
          frame = {
            title = {
              bgColor = "#333";
            };
          };
          views = {
            table = {
              bgColor = "#333";

              header = {
                bgColor = "#333";
              };
            };
            logs = {
              bgColor = "#333";
            };
          };
        };
      };
    };
  };

  programs.jq = {
    enable = true;
  };

  programs.vim = {
    enable = true;
    settings = {
      number = lib.mkDefault true;
      relativenumber = lib.mkDefault true;
    };
  };

  programs.zsh = {
    enable = true;

    autocd = lib.mkDefault true;

    shellAliases =
      {
        # use eval $(aws-export-credentials) to expose them to environment
        aws-export-credentials = lib.mkDefault "${pkgs.awscli2}/bin/aws configure export-credentials --format env --profile";

        aws-s3-cp-public = lib.mkDefault ''
          ${pkgs.awscli2}/bin/aws s3 cp --acl "public-read" --expires "$(${pkgs.coreutils}/bin/date '+%a, %d %b %Y 00:00:00 GMT' -d "$(${pkgs.coreutils}/bin/date +%Y-%m-%d) + 365 day")" --cache-control "max-age=31536000" --metadata-directive REPLACE
        '';

        cat = lib.mkDefault "${pkgs.bat}/bin/bat --paging=never";

        # use curl-aws --aws-sigv4 "aws:amz:region:service"
        curl-aws = lib.mkDefault "${pkgs.curl}/bin/curl -H \"X-Amz-Security-Token: $AWS_SESSION_TOKEN\" --user \"$AWS_ACCESS_KEY_ID:$AWS_SECRET_ACCESS_KEY\"";

        curl-timing = lib.mkDefault "${pkgs.curl}/bin/curl -w \"     time_namelookup:  %{time_namelookup}s\n        time_connect:  %{time_connect}s\n     time_appconnect:  %{time_appconnect}s\n    time_pretransfer:  %{time_pretransfer}s\n       time_redirect:  %{time_redirect}s\n  time_starttransfer:  %{time_starttransfer}s\n                     ----------\n          time_total:  %{time_total}s\n\" -o /dev/null";

        dbase64 = lib.mkDefault "${pkgs.writeShellScript "dbase64" "echo -n \"$1\" | base64 -d"}";

        git-sync-remote = lib.mkDefault "git remote update origin --prune";

        klogs = lib.mkDefault "${pkgs.writeShellScript "klogs" ''
            local ctx="$1"
            local namespace="$2"
            local label="$3"

            if [[ "$ctx" == "" || "$namespace" == "" || "$label" == "" ]]; then
                    echo "Usage: klogs context namespace label"
                    echo "\nContexts:"
                    kubectl config get-contexts -o name | sed 's/^/\t/g'

                    echo "Label examples:"
                    echo "\tapp.kubernetes.io/name=..."
                    echo "\teks.amazonaws.com/component=..."
                    return 1
            fi

            kubectl --context "$ctx" logs -f -n "$namespace" -l "$label"
          ''}
        ";

        nixfix = lib.mkDefault "nix fmt ./**/*.nix";

        # Git
        a = "git add";
        c = "git commit -m";
        d = "git diff";
        d-s = "git diff --staged";
        gtag = "${pkgs.writeShellScript "gtag" "git tag -a $1 -m '$2'"}";
        gtag-replace = "${pkgs.writeShellScript "gtag" ''
          msg=$(git tag -l -n9 $1 | sed "s/$1\s\+//g")
          git tag -d $1 && \
          git push origin :refs/tags/$1 && \
          git tag -a $1 -m "$msg" && \
          git push origin $1
        ''}";
        gtagl = "git fetch --tags && git tag -l -n9 --sort=-v:refname";
        s = "git status";
      }
      // (
        if isDarwin then
          {
            hm-switch = lib.mkDefault "darwin-rebuild switch --flake ~/.config/nix";
          }
        else if isLinux then
          {
            hm-switch = lib.mkDefault "home-manager switch --impure --flake ~/.config/nix";
          }
        else
          { }
      );

    initExtra = lib.mkBefore ''
      for file in ${zshSourceCommon}/*.zsh; do
          source "$file"
      done

      # [Ctrl-RightArrow] - move forward one word
      bindkey '^[[1;3C' forward-word
      # [Ctrl-LeftArrow] - move backward one word
      bindkey '^[[1;3D' backward-word
    '';
  };

  programs.starship = {
    enable = true;
    enableZshIntegration = true;

    settings = {
      format = lib.concatStrings [
        "$username"
        "$hostname"
        "$directory"
        "$character"
      ];
      right_format = lib.concatStrings [
        "$git_branch"
        "$git_commit"
        "$git_state"
        "$git_metrics"
        "$git_status"
        "($cmd_duration)"
      ];
      scan_timeout = 25;
      add_newline = false;
      continuation_prompt = "[▸▹ ](dimmed white)";
      follow_symlinks = false;
      directory = {
        truncate_to_repo = false;
        truncation_length = 20;
        truncation_symbol = "…/";
      };

      cmd_duration = {
        min_time = 100;
        show_milliseconds = true;
        format = "took [$duration]($style) ";
        style = "bold yellow";
      };

      character = {
        success_symbol = "[›](bold green)";
        error_symbol = "[!](bold red)";
      };
    };
  };
}