{ config, pkgs, ... }:

{
  programs.fish = {
    enable = true;

    functions = {
      dbui = ''
        nvim +"DBUI"
      '';
      ff = ''
        bash ${./ff.bash}
      '';
      envsource = ''
        for line in (cat $argv | grep -v '^#')
            set item (string split -m 1 '=' $line)
            set -gx $item[1] $item[2]
        end
      '';
      fish_greeting = "fortune -a";
      resize_images = ''
        # Resize all JPG images in the current directory and its subdirectories
        # Usage: resize_images [percentage]
        # Example: resize_images 20 - resizes all images to 20% of original size
        # If no percentage is provided, defaults to 40%

        set -l percentage $argv[1]
        if test -z "$percentage"
          set percentage 40
        end

        for img in (find . -type f -name "*.JPG")
          set original_size (stat -f %z "$img")
          magick convert "$img" -resize "$percentage%" "$img"
          set new_size (stat -f %z "$img")
          echo "Processed $img"
          echo "Original size: $original_size bytes"
          echo "New size: $new_size bytes"
          echo "---"
        end
      '';
      localip = "ifconfig | grep \"inet \" | grep -v 127.0.0.1 | awk '{print $2}' | head -n 1";
      publicip = "curl -4 ifconfig.me";
      fzf = ''
        set -Ux FZF_DEFAULT_OPTS "
                --color=fg:#ffffff,bg:#0d0e1c,hl:#ef8386
                --color=fg+:#ffffff,bg+:#1d2235,hl+:#ef8386
                --color=border:#61647a,header:#88ca9f,gutter:#0d0e1c
                --color=spinner:#fec43f,info:#00bcff
                --color=pointer:#feacd0,marker:#ff5f59,prompt:#9ac8e0"

        command fzf
      '';
      nn = ''
        # Require a title argument
        if test (count $argv) -lt 1
            echo "Usage: nn \"My Note\""
            return 1
        end

        # Join all arguments into single title (preserves spaces inside quotes)
        set -l title $argv[1]

        # Timestamp up to minutes, format: YYYY-MM-DD_HH-MM
        set -l ts (date "+%Y%m%d%H%M")

        # Normalize title: lowercase, replace spaces with hyphens, remove/replace
        # characters unsafe for filenames (keep a-z0-9- and replace others with -)
        set -l slug (string lower -- $title)
        # Replace any sequence of non-alphanumeric characters with single hyphen
        set -l slug (echo $slug | sed -E 's/[^a-z0-9]+/-/g' | sed -E 's/^-|-$//g')

        # Compose filename
        set -l filename "$ts"_"$slug.md"

        # Directory for notes (change if you prefer another path)
        set -l notes_dir ~/notes

        # Ensure directory exists
        test -d $notes_dir; or mkdir -p $notes_dir

        # Full path
        set -l fullpath "$notes_dir/$filename"

        # If file doesn't exist, create with timestamp and title at top
        if not test -f $fullpath
            # Human-friendly timestamp line (no seconds)
            set -l display_ts (date "+%Y-%m-%d %H:%M")
            printf "---\nCREATED_AT: %s\n---\n\n# %s\n\n" "$display_ts" "$title" > $fullpath
        end

        # Open file in neovim
        nvim $fullpath
      '';
      fish_mode_prompt = ''
        switch $fish_bind_mode
          case default
            set_color --bold brcyan
            echo '[N] '
          case insert
            set_color --bold brgreen
            echo '[I] '
          case replace_one
            set_color --bold yellow
            echo '[R] '
          case replace
            set_color --bold bryellow
            echo '[R] '
          case visual
            set_color --bold brmagenta
            echo '[V] '
          case '*'
            set_color --bold red
            echo '[?] '
        end
        set_color normal
      '';
    };

    interactiveShellInit = ''
      set hn (prompt_hostname)
      set fish_cursor_default     block      blink

      # Custom Colorscheme
      set --universal fish_color_autosuggestion brblack # autosuggestions
      set --universal fish_color_command        brwhite # commands
      set --universal fish_color_comment        brblack # code comments
      set --universal fish_color_cwd            brblack # current working directory in the default prompt
      set --universal fish_color_end            brblack # process separators like ';' and '&'
      set --universal fish_color_error          brwhite # highlight potential errors
      set --universal fish_color_escape         brblack # highlight character escapes like '\n' and '\x70'
      set --universal fish_color_match          yellow # highlight matching parenthesis
      set --universal fish_color_normal         brwhite # default color
      set --universal fish_color_operator       brblack # parameter expansion operators like '*' and '~'
      set --universal fish_color_param          bryellow # regular command parameters
      set --universal fish_color_quote          brmagenta # quoted blocks of text
      set --universal fish_color_redirection    brwhite # IO redirections
      set --universal fish_color_search         --bold --background=black --foreground=bryellow
      set --universal fish_color_search_match   --background black # highlight history search matches and the selected pager item (must be a background)
      set --universal fish_pager_color_selected_background  --background black --foreground brmagenta 
      set --universal fish_pager_color_progress --foreground=brwhite --background=black
      set --universal fish_color_selection      --background magenta  # when selecting text (in vi visual mode)
      set --universal fish_color_cancel         brblack # the '^C' indicator on a canceled command
      set --universal fish_color_host           brwhite # current host system in some of fish default prompts
      set --universal fish_color_host_remote    yellow #ayu:syntax.constant  current host system in some of fish default prompts, if fish is running remotely (via ssh or similar)
      set --universal fish_color_user           brwhite # current username in some of fish default prompts

      set -x GPG_TTY (tty)

      fish_add_path /run/current-system/sw/bin
      fish_add_path /opt/homebrew/bin

      envsource ~/.env

      zoxide init fish | source
      direnv hook fish | source
      fnm env --use-on-cd --shell fish | source

      # Temporary fix because of https://github.com/atuinsh/atuin/issues/2803
      atuin init fish | sed 's/-k up/up/' | source

      if test -d (brew --prefix)"/share/fish/completions"
          set -p fish_complete_path (brew --prefix)/share/fish/completions
      end

      if test -d (brew --prefix)"/share/fish/vendor_completions.d"
          set -p fish_complete_path (brew --prefix)/share/fish/vendor_completions.d
      end
    '';

    shellAbbrs = {
      lg = "nvim +Neogit";
      gg = "nvim +Neogit";
      g = "git";
      frc = "source ~/.config/fish/**/*.fish";
    };
  };
}