#!/bin/bash

set -C -f
IFS="$(printf '%b_' '\n')"
IFS="${IFS%_}"

# Called by lf to generate the preview.
#   $1 file path
#   $4 x offset in cell coordinates
#   $5 y offset in cell coordinates
#   $2 width of the display area in cell coordinates
#   $3 height of the display area in cell coordinates
THUMBNAIL_FPATH="$LF_KITTY_TEMPDIR/thumbnail.png"

# case "$(basename -- "$1" | tr '[:upper:]' '[:lower:]')" in
case "$(file --dereference --brief --mime-type -- "$1")" in
text/html)
  lynx -width="$4" -display_charset=utf-8 -dump "$1"
  ;;
text/troff)
  w=`expr "$2" - 2`
  MANWIDTH="$w" man ./ "$1"
  ;;
text/* | */xml)
  [ "${1##*.}" = "md" ] && glow -s dark -w "$2" "$1" && exit 0
  bat --terminal-width "$(($4 - 2))" -f "$1"
  ;;
application/json | application/x-ndjson)
  jq -C < "$1" ;;
audio/* | application/octet-stream)
  mediainfo "$1" || exit 1
  ;;
image/png)
	$XDG_CONFIG_HOME/lf/kitty.sh show "$1" $LF_KITTY_IMAGE_ID 1 $4 $5 $2 $3
	;;
image/gif)
	magick convert "${1}[0]" "$THUMBNAIL_FPATH"
	$XDG_CONFIG_HOME/lf/kitty.sh show "$THUMBNAIL_FPATH" $LF_KITTY_IMAGE_ID 1 $4 $5 $2 $3
	;;
image/*)
	magick convert "$1" "$THUMBNAIL_FPATH"
	$XDG_CONFIG_HOME/lf/kitty.sh show "$THUMBNAIL_FPATH" $LF_KITTY_IMAGE_ID 1 $4 $5 $2 $3
	;;
application/pdf)
	gs -o "$THUMBNAIL_FPATH" -sDEVICE=pngalpha -dLastPage=1 "$1" >/dev/null
	$XDG_CONFIG_HOME/lf/kitty.sh show "$THUMBNAIL_FPATH" $LF_KITTY_IMAGE_ID 1 $4 $5 $2 $3
	;;
font/* | application/vnd.ms-opentype)
  FONT_NAME=$(fc-query --format "%{family}\n" "$1" | head -n 1)

  PREVIEW_TEXT="${FONT_NAME}\nABCDEFGHIJKLMNOPQRSTUBWXYZ\n""\
abcdefghijklmnopqrstuvwxyz\n""\
1234567890\n""\
!@#$\%(){}[]-+=_\`~"

  magick convert -size "1920x1080" xc:'#ffffff' \
    -gravity center -pointsize 76 \
    -font "$1" \
    -fill '#000000' \
    -annotate +0+0 "$PREVIEW_TEXT" \
    "$THUMBNAIL_FPATH"
	$XDG_CONFIG_HOME/lf/kitty.sh show "$THUMBNAIL_FPATH" $LF_KITTY_IMAGE_ID 1 $4 $5 $2 $3
  ;;
*)
	cat "$1"
	;;
esac
exit 127