Slack üzenetet küld, ha egy új étteremnek van Boldog Órája a Netpincéren

netpincer-boldogora.sh

#!/bin/bash
#
# Send notification on new Netpincér Boldog Óra restaurants.
#
# DEPENDS       :pip3 install slack-webhook-cli

# Boldog Óra page
NETPINCER_BOLDOGORA="https://www.netpincer.hu/budapest_iii/hazhozszallitas/happy/1"
# Cache file
NETPINCER_BOLDOGORA_CACHE="${HOME}/.cache/netpincer-boldogora"
# Slack webhook
export SLACK_WEBHOOK_URL="https://hooks.slack.com/services/GET-A-Slack-WEBHOOK-URL-FOR-YOURSELF"
# User name
export SLACK_USERNAME="NetpincérMOST"
# User icon URL
export SLACK_ICON_URL="https://www.netpincer.hu/apple-touch-icon.png"

Restaurants()
{
    # Fetch HTML
    #   Parse names
    #   Exclude some
    #   Join lines
    wget -q -O- "$NETPINCER_BOLDOGORA" \
        | sed -n -e 's#.*itemprop="name">\([^<]\+\)<.*#\1#p' \
        | grep -E -x -v '(Nemo Fish & Chips & Salad Házhozszállítás|Theo Papa Konyhája)' \
        | paste -s -d ","
}

# Store current list
CURRENT="$(Restaurants)"
# If cached and current differ
if ! diff -q "$NETPINCER_BOLDOGORA_CACHE" <(echo "$CURRENT") >/dev/null; then
    # Update cache
    echo "$CURRENT" >"$NETPINCER_BOLDOGORA_CACHE"
    # Send notification if not empty
    if [ -n "$CURRENT" ]; then
        ~/.local/bin/slack "$CURRENT"
    fi
fi

exit 0