{ config, pkgs, ... }:

# usage: bemenu [options]
# Options
#  -h, --help            display this help and exit.
#  -v, --version         display version.
#  -i, --ignorecase      match items case insensitively.
#  -F, --filter          filter entries for a given string.
#  -w, --wrap            wraps cursor selection.
#  -l, --list            list items vertically with the given number of lines.
#  -p, --prompt          defines the prompt text to be displayed.
#  -P, --prefix          text to show before highlighted item.
#  -I, --index           select item at index automatically.
#  -x, --password        hide input.
#  -s, --no-spacing      disable the title spacing on entries.
#  --scrollbar           display scrollbar. (none (default), always, autohide)
#  --ifne                only display menu if there are items.
#  --fork                always fork. (bemenu-run)
#  --no-exec             do not execute command. (bemenu-run)
# 
# Use BEMENU_BACKEND env variable to force backend:
#  curses               ncurses based terminal backend
#  wayland              wayland backend
#  x11                  x11 backend
# 
# If BEMENU_BACKEND is empty, one of the GUI backends is selected automatically.
# 
# Backend specific options
#    c = ncurses, w == wayland, x == x11
#    (...) At end of help indicates the backend support for option.
# 
#  -b, --bottom          appears at the bottom of the screen. (wx)
#  -c, --center          appears at the center of the screen. (wx)
#  -f, --grab            show the menu before reading stdin. (wx)
#  -n, --no-overlap      adjust geometry to not overlap with panels. (w)
#  -m, --monitor         index of monitor where menu will appear. (wx)
#  -H, --line-height     defines the height to make each menu line (0 = default height). (wx)
#  -M, --margin          defines the empty space on either side of the menu. (wx)
#  -W, --width-factor    defines the relative width factor of the menu (from 0 to 1). (wx)
#  -B, --border          defines the width of the border in pixels around the menu. (wx)
#  --ch                  defines the height of the cursor (0 = scales with line height). (wx)
#  --cw                  defines the width of the cursor. (wx)
#  --hp                  defines the horizontal padding for the entries in single line mode. (wx)
#  --fn                  defines the font to be used ('name [size]'). (wx)
#  --tb                  defines the title background color. (wx)
#  --tf                  defines the title foreground color. (wx)
#  --fb                  defines the filter background color. (wx)
#  --ff                  defines the filter foreground color. (wx)
#  --nb                  defines the normal background color. (wx)
#  --nf                  defines the normal foreground color. (wx)
#  --hb                  defines the highlighted background color. (wx)
#  --hf                  defines the highlighted foreground color. (wx)
#  --fbb                 defines the feedback background color. (wx)
#  --fbf                 defines the feedback foreground color. (wx)
#  --sb                  defines the selected background color. (wx)
#  --sf                  defines the selected foreground color. (wx)
#  --ab                  defines the alternating background color. (wx)
#  --af                  defines the alternating foreground color. (wx)
#  --scb                 defines the scrollbar background color. (wx)
#  --scf                 defines the scrollbar foreground color. (wx)
#  --bdr                 defines the border color. (wx)

let
  bemenuColors = {
    titleBackground = "#282828E0";
    titleForeground = "#fbf1c7";
    filterBackground = "#282828E0";
    filterForeground = "#ebdbb2";
    normalBackground = "#282828E0";
    normalForeground = "#ebdbb2";
    highlightedBackground = "#458588E0";
    highlightedForeground = "#fbf1c7";
    scrollbarBackground = "#282828E0";
    scrollbarForeground = "#458588E0";
  };
in {
  home.packages = [ pkgs.bemenu ];
  home.sessionVariables.BEMENU_OPTS = ''
    --ignorecase \
    --list 20 \
    --prompt '❯' \
    --scrollbar none \
    --wrap \
    --scrollbar autohide \
    --no-overlap \
    --monitor all \
    --fn 'Inter 13px' \
    --tb '${bemenuColors.titleBackground}' \
    --tf '${bemenuColors.titleForeground}' \
    --fb '${bemenuColors.filterBackground}' \
    --ff '${bemenuColors.filterForeground}' \
    --nb '${bemenuColors.normalBackground}' \
    --ab '${bemenuColors.normalBackground}' \
    --nf '${bemenuColors.normalForeground}' \
    --af '${bemenuColors.normalForeground}' \
    --hb '${bemenuColors.highlightedBackground}' \
    --hf '${bemenuColors.highlightedForeground}' \
    --scb '${bemenuColors.scrollbarBackground}' \
    --scf '${bemenuColors.scrollbarForeground}'
  '';
}