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#!/usr/bin/env bash
# Run sfeed
# shellcheck disable=2016
# set -euo pipefail
main() {
NOFETCH=false
[ "x$1" = "x-n" ] && {
NOFETCH=true
shift
}
[ -n "$1" ] && SFEED_OUTPUT="$1" || SFEED_OUTPUT="$HOME/.sfeed"
export SFEED_OUTPUT
export NOFETCH
export SFEED_CONFIG="$HOME/.sfeed"
# SFEED_CONFIG="${XDG_CONFIG_HOME:-$HOME/.config}/sfeed"
export SFEED_DATA="$HOME/.sfeed"
# SFEED_DATA="${XDG_DATA_HOME:-$HOME/.local/share}/sfeed"
# SFEED_OUTPUT=/var/www/sfeed
export sfeedrc="$SFEED_CONFIG/sfeedrc"
export sfeedpath="$SFEED_DATA/feeds"
test -d "$(dirname "$sfeedrc")" || mkdir -p "$(dirname "$sfeedrc")"
test -d "$sfeedpath" || mkdir -p "$sfeedpath"
touch /tmp/runsfeed.ok
# if ! $NOFETCH; then
# logok "Finding Invidious host" \
# get_invidious_url "https://api.invidious.io/instances.json?sort_by=health"
# fi
logok "Removing unsubscribed feeds" \
remove_unsubs "$sfeedrc"
logok -n "Updating feeds" \
update "$sfeedrc"
logok "Updating urls" \
update_urls "$sfeedrc"
logok "Generating HTML" '{
html "$sfeedpath"/* >/tmp/sfeed-index.html &&
mv /tmp/sfeed-index.html "$SFEED_OUTPUT/index.html";
html -v LIMIT=-1 "$sfeedpath"/* >/tmp/sfeed-feeds.html &&
mv /tmp/sfeed-feeds.html "$SFEED_OUTPUT/feeds.html";
}'
logok "Generating RSS" '{
atom "$sfeedpath" >/tmp/feeds.xml &&
mv /tmp/feeds.xml "$SFEED_OUTPUT/feeds.xml";
atom "$sfeedpath" 7 >/tmp/feeds-short.xml &&
mv /tmp/feeds-short.xml "$SFEED_OUTPUT/feeds-short.xml";
}'
logok "Generating OPML" '{
opml "$sfeedrc" >/tmp/feeds.opml &&
mv /tmp/feeds.opml "$SFEED_OUTPUT/feeds.opml";
}'
logok "Generating twtxt" '{
twtxt "$sfeedpath" >/tmp/feeds.txt &&
mv /tmp/feeds.txt "$SFEED_OUTPUT/feeds.txt";
}'
logok "Generating ass" '{
ass "$sfeedpath" >/tmp/feed.ass &&
mv /tmp/feed.ass "$SFEED_OUTPUT/feed.ass";
}'
logok "Archiving old feeds" \
'archive 60 "$sfeedpath"/*'
logok "Weeding" '{
echo
mkdir -p "$SFEED_OUTPUT/weeds";
weed > /tmp/weeds.html &&
mv /tmp/weeds.html "$SFEED_OUTPUT/weeds/index.html";
}'
robotstxt >"$SFEED_OUTPUT/robots.txt"
if [ -f /tmp/runsfeed.ok ]; then
echo >&2 'Done.'
else
echo >&2 'Done (some errors).'
fi
}
runcmd() {
cmd="$(command -v "$1" || echo "./$1")"
shift
"$cmd" "$@"
}
remove_unsubs() {
runcmd sfeed_unsubscribe.sh "$@"
}
update_urls() {
runcmd sfeed_update_urls.sh "$@"
}
get_invidious_url() {
"${NOFETCH:-false}" && return
curl -sL "$1" |
jq -r .[][1].uri |
grep -v onion |
head -n1 | tee /tmp/invidious.host
}
logok() {
newline=''
if [ "x$1" = x-n ]; then
newline='\n'
shift
fi
printf "%s...$newline" "$1" >&2
shift
if output="$(eval "$@" | tee /dev/stderr)"; then
printf '%s\n' "${output:-ok}"
return 0
else
rm /tmp/runsfeed.ok
printf 'ERROR\n'
return 1
fi
}
update() {
runcmd sfeed_update_xargs "$@"
}
aggregate() {
curd="$PWD"
cd "$1" || return 1
if [ -n "$2" ]; then
old="$(($(date +%s) - ($2 * 24 * 3600)))"
else
old=0
fi
awk -v old="$old" \
'BEGIN{FS="\t";OFS="\t";} int($1)>=old{$2="["FILENAME"] "$2;print}' \
* | sort -k1,1rn
cd "$curd" || return
}
ass() {
aggregate "$1" "$2" | runcmd sfeed_ass.awk
}
twtxt() {
aggregate "$1" "$2" | sfeed_twtxt
}
opml() {
sfeed_opml_export "$@"
}
html() {
runcmd sfeed_html.awk "$@"
}
atom() ( # atom DIRECTORY [DAYS]
aggregate "$1" "$2" | sfeed_atom
)
weed() (
# Generate a page for weeds.
runcmd sfeed_update_xargs weedrc >&2
. weedrc
aggregate "$sfeedpath" | runcmd sfeed_weed.awk
)
archive() ( # sfeed_archive AGE FEED ...
age="$1"
shift
# shellcheck disable=2031
old="$sfeedpath/../sfeed.old.d"
mkdir -p "$old"
for feed; do
awk -v old="$(($(date +%s) - (age * 24 * 3600)))" \
-F '\t' 'int($1) > old' <"$feed" >"$feed.new"
mv "$feed" "$old/${feed##*/}" 2>/dev/null &&
mv "$feed.new" "$feed" 2>/dev/null
done
)
robotstxt() {
echo "User-Agent: *"
echo "Disallow: /"
}
if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
main "$@"
fi
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