#!/usr/bin/env sh

# include common definitions
# shellcheck source=scripts/core/sxmo_common.sh
. "$(dirname "$0")/sxmo_common.sh"

FETCHENABLED=1

if [ -f "$XDG_CONFIG_HOME/sxmo/sfeedrc" ]; then
	SFEEDCONF="$XDG_CONFIG_HOME/sxmo/sfeedrc"
elif [ -f "$HOME/.sfeed/sfeedrc" ]; then
	SFEEDCONF="$HOME/.sfeed/sfeedrc"
else
	SFEEDCONF=/usr/share/sxmo/appcfg/sxmo_sfeedrc
fi

die() {
	echo "Error: $1"
	exit 1
}

tflt() {
	# Date with feature like "1 day ago" etc main reason
	# coreutils is a dep...
	TIME=$(eval date -d \""$TIMESPAN"\" +%s)
	cat | gawk "\$1 > $TIME"
}

prep_temp_folder_with_items() {
	mkdir -p "$FOLDER"
	rm -rf "${FOLDER:?}/*"
	cd ~/.sfeed/feeds/ || die "Could cd to ~/.sfeed/feeds/"
	for f in ./*; do
		fclean="$(basename "$f")"
		tflt < "$fclean" > "$FOLDER/$fclean"
		[ -s "$FOLDER/$fclean" ] || rm "${FOLDER:?}/$fclean"
	done
}

list_items() {
	cd "$FOLDER" || die "Couldn't cd to $FOLDER"
	printf %b "Close Menu\nChange Timespan\n"
	gawk -F'\t' '{print $1 " " substr(FILENAME, 3) " | " $2 ": " $3}' ./* |\
	grep -E '^[0-9]{5}' |\
	sort -nk1 |\
	sort -r |\
	gawk -F' ' '{printf strftime("%y/%m/%d %H:%M",$1); $1=""; print $0}'
}


rsstimespanmenu() {
	CHOICE="Fetch"
	while echo "$CHOICE" | grep Fetch; do
		# Dmenu prompt for timespan
		CHOICES="
			Close Menu
			1 hour ago
			3 hours ago
			12 hours ago
			1 day ago
			2 day ago
			1970-01-01
			Fetch $([ "$FETCHENABLED" = "1" ] && echo "enabled $icon_chk" || echo "disabled (use cache)")
		"
		CHOICE="$(
			echo "$CHOICES" |
			sed '/^[[:space:]]*$/d' |
			awk '{$1=$1};1' |
			dmenu -p "RSS Timespan" -c -l 10
		)"

		if echo "$CHOICE" | grep "Fetch"; then
			[ "$FETCHENABLED" = 0 ] && FETCHENABLED=1 || FETCHENABLED=0
		else
			TIMESPAN="$CHOICE"
		fi
	done

	# Update Sfeed via sfeed_update (as long as user didn't request cached)
	[ $FETCHENABLED = 1 ] &&
		sxmo_terminal.sh sh -c "echo Fetching Feeds && sfeed_update $SFEEDCONF"

	rssreadmenu
}

rssreadmenu() {
	# Make folder like /tmp/sfeed_1_day_ago
	FOLDER="/tmp/sfeed_$(echo "$TIMESPAN" | sed 's/ /_/g')"
	prep_temp_folder_with_items
	TIMESPANABBR="$(
		echo "$TIMESPAN" |
		sed 's/ago//' |
		sed 's/hours/h/' |
		sed 's/hour/h/' |
		sed 's/days/d/' |
		sed 's/day/d/' |
		tr -d ' '
	)"

	CHOICES="$(list_items)"
	DMENUIDX=1
	while true; do
		# Show list of items
		PICKED="$(printf %b "$CHOICES" | dmenu -idx $DMENUIDX -p "RSS ($TIMESPANABBR)" -c -l 20 -fn Terminus-15)"
		DMENUIDX="$(echo "$CHOICES" | grep -m1 -F -n "$PICKED" | cut -d ':' -f1)"
		if [ "$PICKED" = "Close Menu" ]; then
			die Closed Menu
		elif [ "$PICKED" = "Change Timespan" ]; then
			rsstimespanmenu
			CHOICES="$(list_items)"
			DMENUIDX=1
		else
			URL="$(echo "$PICKED" | gawk -F " " '{print $NF}')"
			sxmo_urlhandler.sh "$URL" fork
		fi
	done
}

rsstimespanmenu