#!/bin/sh

# This script is based on sfeed (https://codemadness.org/sfeed.html), but
# it allows you organize your feeds in directories and subdirectories.
# In your $sfd directory (see below) you should have two folders:
#	urls: it can contain more subfolders and files. Each file should contain
#		only one line with the url to the feed. The name of the file is the
#		name of the feed (it can contains spaces and such).
#	files: this one can be empty, it will be filled with the feed files
# An older version of this script also marked viewed items and removed
# them before displaying the choice of feeds. Contact me if you are interested
# in using it.

# Usage: sfeed-browser [-m menu]
# Requires: sfeed, dmenu-file-picker (or similar), open-url (or similar)

filepicker="dmenu-filepicker" # Try "nnn -p -"
menu="dmenu -l 35 -i"
urlopener=open-url
sfd="$HOME/box/sfeed"
showlast=10

while getopts "m:" opt; do
	case "$opt" in
		m)
			menu="$OPTARG"
			;;
	esac
done

# Might add more stuff later
fixurl() {
	sed 's/old\.reddit\.com/reddit\.com/'
}

dirtofeedpaths() {
	while read line; do
		find "$line" | while read fname; do
			[ -f "$fname" ] && echo "$fname"
		done
	done
}

pathstosfeedrc() {
	printf "sfeedpath=\"$sfd/files\"\n\nfeeds() {\n"
	while read line; do
		feedname=$(echo "$line" | sed 's/.*\///')
		read feedurl <"$line"
		printf "\tfeed \"$feedname\" \"$feedurl\"\n"
	done
	printf "}\n"
}

feedmenu() {
	while read line; do
		feedname=$(echo "$line" | sed 's/.*\///')
		sfeed_plain "$sfd/files/$feedname" | head -$showlast
	done | $menu
}

openfeeds() {
	while read line; do
		url=$(echo "$line" | sed 's/.*[\t ]//' | fixurl)
		[ -n "$url" ] && echo $url
	done | xargs $urlopener
}

$filepicker "$@" "$sfd/urls" | dirtofeedpaths > "$sfd/last"
pathstosfeedrc < "$sfd/last" > "$sfd/sfeedrc"
sfeed_update "$sfd/sfeedrc"
feedmenu < "$sfd/last" | openfeeds