#!/bin/bash
# FILE:       	dashboard/peer/list
# DESCRIPTION:	List a user's peers
# USAGE:      	list $remote_ip

source /etc/wagon/config
ip="${1}"
printf '%s requested peer listing...\n' "${ip}" >&2

# Create token if needed
token="$(grep "${ip}" /var/local/wagon/tokens | cut -f2)"
if [ "${token}" == "" ]; then
	printf 'Creating token for %s...\n' "${ip}" >&2
	token="$(</dev/urandom tr -dc '[:alnum:]' | fold -w 64 | head -n 1)"
	printf '%s\t%s\n' "${ip}" "${token}" >>/var/local/wagon/tokens
fi

# Get peer IP list
if ! wg_output="$(sudo /usr/bin/wg show "${TLD}" allowed-ips)"; then
	printf 'ERROR! Wireguard failed!\n' >&2
	/usr/lib/wagon/http_res 500; exit
fi

# Filter out this user's
user_peers="$(grep "${ip%[.:]*}" <<<"${wg_output}" 2>/dev/null)"
if [ "${user_peers}" == '' ]; then
	printf "ERROR! %s accessed the dashboard but isn't on the network!\n" "${ip}" >&2
	printf 'User not found!\n' | /usr/lib/wagon/http_res 403; exit
fi

# Get domains for each one
if peers="[$(/usr/lib/wagon/ips_to_peers json <<<"${user_peers}")]"; then
	printf '{"token":"%s","peers":%s}' "${token}" "${peers}" | /usr/lib/wagon/http_res 200 'application/json'
	printf 'Sent peers to user %s\n' "${ip}" >&2
else
	printf 'ERROR: Failed to lookup domains for user: %s\n' "${ip}" >&2
	/usr/lib/wagon/http_res 500; exit
fi