#!/bin/bash

CACHE_DIR=${XDG_CACHE_DIR:-${HOME}/.cache}/lf
[ -d "$CACHE_DIR" ] || mkdir -p "$CACHE_DIR"

cat() {
	f=$1
	shift
	if command -v bat >/dev/null 2>&1; then
		bat --color=always --style=numbers --pager=never "$f" $@
	else
		cat "$f"
	fi
}

image() {
	if [ -n "$WT_SESSION" ] || [ -n "$TMUX" ]; then
		chafa -f symbols -s "$2x$3" --animate off --polite on "$1"
	else
		chafa -f sixels -s "$2x$3" --animate off --polite on "$1"
	fi
}

case "$(file -Lb --mime-type -- "$1")" in
	image/*)
		image "$1" "$2" "$3" "$4" "$5"
		exit 1
		;;
	application/pdf)
		CACHE="${CACHE_DIR}/thumbnail.$(sha256sum "$1" | awk '{print $1}')"
		[ ! -f "${CACHE}.jpg" ] && pdftoppm -jpeg -f 1 -singlefile "$1" "$CACHE"
		image "${CACHE}.jpg" "$2" "$3" "$4" "$5"
		;;
	text/*|application/json)
		cat "$1"
		;;
	*)
		lesspipe.sh "$1" || cat "$1" || "Could not preview file."
		;;
esac