#!/bin/sh

RED="\033[31m"
RESET="\033[0m"

set -C -f

image() {
	f=$1
	w=$2
	h=$3
	x=$4
	y=$5
	if [ -f "$1" ] && [ -n "$DISPLAY" ] && [ -z "$WAYLAND_DISPLAY" ] && command -V ueberzug >/dev/null 2>&1; then
		printf '{"action": "add", "identifier": "PREVIEW", "x": "%s", "y": "%s", "width": "%s", "height": "%s", "scaler": "contain", "path": "%s"}\n' "$(($4 + 3))" "$(($5 + 1))" "$(($2 - 6))" "$(($3 - 2))" "$1" >"$FIFO_UEBERZUG"
	fi
	exit 1
}

video() {
	f=$1
	w=$2
	h=$3
	x=$4
	y=$5
	thumb="$(vidthumb "$f")" || (
		printf "%b" "\033[31mvidthumb script not in path\033[0m"
		return 1
	)
	image "$thumb" "$w" "$h" "$x" "$y"
}

batorcat() {
	f=$1
	w=$2
	command -v bat >/dev/null 2>&1 && bat --color=always --style=plain --pager=never --terminal-width "$((w - 2))" "$f" && exit 0
	command -v batcat >/dev/null 2>&1 && batcat --color=always --style=plain --pager=never --terminal-width "$((w - 2))" "$f" && exit 0
	cat "$f" && exit 0
	exit 1
}

run() {
    #shellcheck disable=SC2068
	if ! command -v "$1" >/dev/null 2>&1; then
		printf "%b" "${RED}Cannot execute $1${RESET}"
		exit 1
	elif $@; then
		exit 0
	else
		printf "%b" "${RED}Failed to run command: $*${RESET}"
		exit 1
	fi
}

CACHE="$HOME/.cache/lf/thumbnail-$(stat --printf '%n\0%i\0%F\0%s\0%W\0%Y' -- "$(readlink -f "$1")" | sha256sum | awk '{print $1}')"

# We set the desktop to gnome to force usage of `gio` over `file` for better detection
case "$(env XDG_CURRENT_DESKTOP=GNOME xdg-mime query filetype "$1")" in
*/x-bzip-compressed-tar | */x-compressed-tar | */x-xz-compressed-tar) run als -- "$1" ;;
*/x-7z-compressed | */vnd.rar | */x-tar | */zip | */x-java-archive | */x-xz) run 7z l "$1" | sed 1,11d ;;
*/x-cd-image) run iso-info --no-header -l "$1" ;;
*/x-bittorrent) run transmission-show "$1" ;;
*/vnd.sun.xml.writer) run odt2txt "$1" ;;
*/msword) run catdoc "$1" ;;
*/vnd.openxmlformats-officedocument.wordprocessingml.document) run docx2txt <"$1" ;;
*/vnd.ms-excel) run ssconvert --export-type=Gnumeric_stf:stf_csv "$1" "fd://1" | batorcat --language=csv ;;
*/vnd.openxmlformats-officedocument.spreadsheetml.sheet) run ssconvert --export-type=Gnumeric_stf:stf_csv "$1" "fd://1" | batorcat --language=csv ;;
*/epub+zip)
	[ ! -f "$CACHE" ] && run epub-thumbnailer "$1" "$CACHE" 1024
	image "$CACHE" "$2" "$3" "$4" "$5"
	;;
*/pgp-encrypted) run gpg -d -- "$1" ;;
*/pkix-cert) run openssl x509 -text -noout -in "$1" ;;
image/svg+xml)
	[ ! -f "$CACHE" ] && run inkscape --convert-dpi-method=none -o "$CACHE" --export-overwrite -D --export-png-color-mode=RGBA_16 "$1"
	image $CACHE "$2" "$3" "$4" "$5"
	;;
image/*) image "$1" "$2" "$3" "$4" "$5" ;;
video/*) video "$1" "$2" "$3" "$4" "$5" ;;
*opendocument*) run odt2txt "$1" ;;
*/markdown) run lowdown -Tterm "$1" ;;
*/html) run lynx -dump "$1" ;;
text/* | */json | */schema+json | */xml | */javascript) batorcat "$1" "$2" ;;
*/pdf)
	[ ! -f "${CACHE}.jpg" ] && run pdftoppm -jpeg -f 1 -singlefile "$1" "$CACHE"
	image "${CACHE}.jpg" "$2" "$3" "$4" "$5"
	;;
esac

xdg-mime query filetype "$1"
mediainfo "$1"

exit 1