# My shell configuration
{ pkgs, lib, config, ... }:
let fetch = config.theme.fetch; # neofetch, nerdfetch, pfetch
in {

  home.packages = with pkgs; [ bat ripgrep tldr sesh ];

  home.sessionPath = [ "$HOME/go/bin" ];

  programs.zsh = {
    enable = true;
    enableCompletion = true;
    autosuggestion.enable = true;
    syntaxHighlighting = {
      enable = true;
      highlighters = [ "main" "brackets" "pattern" "regexp" "root" "line" ];
    };
    historySubstringSearch.enable = true;

    initExtraFirst = ''
      bindkey -e
      ${if fetch == "neofetch" then
        pkgs.neofetch + "/bin/neofetch"
      else if fetch == "nerdfetch" then
        "nerdfetch"
      else if fetch == "pfetch" then
        "echo; ${pkgs.pfetch}/bin/pfetch"
      else
        ""}

      function sesh-sessions() {
        session=$(sesh list -t -c | fzf --height 70% --reverse)
        [[ -z "$session" ]] && return
        sesh connect $session
      }

      zle     -N             sesh-sessions
      bindkey -M emacs '\es' sesh-sessions
      bindkey -M vicmd '\es' sesh-sessions
      bindkey -M viins '\es' sesh-sessions
    '';

    history = {
      ignoreDups = true;
      save = 10000;
      size = 10000;
    };

    profileExtra = lib.optionalString (config.home.sessionPath != [ ]) ''
      export PATH="$PATH''${PATH:+:}${
        lib.concatStringsSep ":" config.home.sessionPath
      }"
    '';

    #NOTE- for btop to show gpu usage 
    #may want to check the driver version with:
    #nix path-info -r /run/current-system | grep nvidia-x11
    #and 
    #nix search nixpkgs nvidia_x11
    sessionVariables = {
      LD_LIBRARY_PATH = lib.concatStringsSep ":" [
        "${pkgs.linuxPackages_latest.nvidia_x11_beta}/lib" # change the package name according to nix search result
        "$LD_LIBRARY_PATH"
      ];
    };

    shellAliases = {
      vim = "nvim";
      vi = "nvim";
      v = "nvim";
      c = "clear";
      clera = "clear";
      celar = "clear";
      e = "exit";
      cd = "z";
      ls = "eza --icons=always --no-quotes";
      tree = "eza --icons=always --tree --no-quotes";
      sl = "ls";
      open = "${pkgs.xdg-utils}/bin/xdg-open";
      icat = "${pkgs.kitty}/bin/kitty +kitten icat";
      ssh = "kitty +kitten ssh";
      cat =
        "bat --theme=base16 --color=always --paging=never --tabs=2 --wrap=never --plain";

      wireguard-import = "nmcli connection import type wireguard file";

      notes =
        "nvim ~/nextcloud/notes/index.md --cmd 'cd ~/nextcloud/notes' -c ':Telescope find_files'";
      note = "notes";

      # git
      g = "lazygit";
      ga = "git add";
      gc = "git commit";
      gcu = "git add . && git commit -m 'Update'";
      gp = "git push";
      gpl = "git pull";
      gs = "git status";
      gd = "git diff";
      gco = "git checkout";
      gcb = "git checkout -b";
      gbr = "git branch";
      grs = "git reset HEAD~1";
      grh = "git reset --hard HEAD~1";

      gaa = "git add .";
      gcm = "git commit -m";
    };

    initExtra = ''
      # search history based on what's typed in the prompt
      autoload -U history-search-end
      zle -N history-beginning-search-backward-end history-search-end
      zle -N history-beginning-search-forward-end history-search-end
      bindkey "^[OA" history-beginning-search-backward-end
      bindkey "^[OB" history-beginning-search-forward-end

      # General completion behavior
      zstyle ':completion:*' completer _extensions _complete _approximate

      # Use cache
      zstyle ':completion:*' use-cache on
      zstyle ':completion:*' cache-path "$XDG_CACHE_HOME/zsh/.zcompcache"

      # Complete the alias
      zstyle ':completion:*' complete true

      # Autocomplete options
      zstyle ':completion:*' complete-options true

      # Completion matching control
      zstyle ':completion:*' matcher-list 'm:{a-zA-Z}={A-Za-z}' 'r:|[._-]=* r:|=*' 'l:|=* r:|=*'
      zstyle ':completion:*' keep-prefix true

      # Group matches and describe
      zstyle ':completion:*' menu select
      zstyle ':completion:*' list-grouped false
      zstyle ':completion:*' list-separator '''
      zstyle ':completion:*' group-name '''
      zstyle ':completion:*' verbose yes
      zstyle ':completion:*:matches' group 'yes'
      zstyle ':completion:*:warnings' format '%F{red}%B-- No match for: %d --%b%f'
      zstyle ':completion:*:messages' format '%d'
      zstyle ':completion:*:corrections' format '%B%d (errors: %e)%b'
      zstyle ':completion:*:descriptions' format '[%d]'

      # Colors
      zstyle ':completion:*' list-colors ''${(s.:.)LS_COLORS}

      # case insensitive tab completion
      zstyle ':completion:*:*:cd:*' tag-order local-directories directory-stack path-directories
      zstyle ':completion:*:*:cd:*:directory-stack' menu yes select
      zstyle ':completion:*:-tilde-:*' group-order 'named-directories' 'path-directories' 'users' 'expand'
      zstyle ':completion:*:*:-command-:*:*' group-order aliases builtins functions commands
      zstyle ':completion:*' special-dirs true
      zstyle ':completion:*' squeeze-slashes true

      # Sort
      zstyle ':completion:*' sort false
      zstyle ":completion:*:git-checkout:*" sort false
      zstyle ':completion:*' file-sort modification
      zstyle ':completion:*:eza' sort false
      zstyle ':completion:complete:*:options' sort false
      zstyle ':completion:files' sort false

      ${lib.optionalString config.services.gpg-agent.enable ''
        gnupg_path=$(ls $XDG_RUNTIME_DIR/gnupg)
        export SSH_AUTH_SOCK="$XDG_RUNTIME_DIR/gnupg/$gnupg_path/S.gpg-agent.ssh"
      ''}

      # Allow foot to pipe command output
      function precmd {
        if ! builtin zle; then
            print -n "\e]133;D\e\\"
        fi
      }
      function preexec {
        print -n "\e]133;C\e\\"
      }

    '';
  };
}