#!/bin/bash
# Collect all websites and social media for MEPs based on https://www.europarl.europa.eu/meps/en/full-list/all
# Writes to several file descriptors:
# - Info about what it's doing to stderr
# - Extracted URLs to FD 3
# - Warnings about EP Newshub links to FD 4

# https://unix.stackexchange.com/a/206848
if ! { >&3; } 2>/dev/null
then
	echo "Error: FD 3 not open" >&1
	exit 1
fi
if ! { >&4; } 2>/dev/null
then
	echo "Error: FD 4 not open" >&1
	exit 1
fi

scriptpath="$(cd "$(dirname "$0")"; pwd -P)"
export PATH="${scriptpath}:${PATH}"
echo "Fetching MEP list" >&1
curl-archivebot-ua -s "https://www.europarl.europa.eu/meps/en/full-list/all" | \
	grep -Po '<a class="ep_content" href="\K/meps/en/\d+(?=")' | \
	while read -r profileUrl
	do
		profileUrl="https://www.europarl.europa.eu${profileUrl}"
		echo "Fetching ${profileUrl}" >&1
		profilePage="$(curl-archivebot-ua -sL "${profileUrl}")"
		mapfile -t urls < <(tr -d '\r\n' <<< "${profilePage}" | \
			grep -Po '<div class="ep-a_share ep-layout_socialnetwok">.*?</ul>' | \
			grep -Po '<a\s+([^>]*\s+)?href="\K(?!mailto:)[^"]+')

		# Classification
		for url in "${urls[@]}"
		do
			if [[ "${url}" =~ //((www|[a-z][a-z]-[a-z][a-z])\.)?facebook\.com/ ]]
			then
				echo "Facebook: ${url}"
			elif [[ "${url}" =~ //(www\.)?instagram\.com/ ]]
			then
				echo "Instagram: ${url}"
			elif [[ "${url}" =~ //(www\.)?twitter\.com/ ]]
			then
				echo "Twitter: ${url}"
			elif [[ "${url}" =~ //([^/]+\.)?youtube\.com/ || "${url}" =~ //youtu\.be/ ]]
			then
				echo "YouTube: ${url}"
			else
				echo "Other: ${url}"
			fi
		done >&3

		# Check if there's a newshub mention and print a warning about that if necessary
		if grep -q 'container_header_newshub' <<< "${profilePage}"
		then
			echo "Has EP Newshub link: ${profileUrl}" >&4
		fi
	done