#!/bin/bash

DATE=$(date)

declare -A HTTPS_DOMAINS
declare -A CONFIG_FILES
declare -A REVERSE_PROXIES

# Loop door alle config-bestanden
for conf in /etc/apache2/sites-enabled/*.conf; do
    conf_file=$(basename "$conf")
    in_vhost=0
    current_port=""
    current_domains=()

    while IFS= read -r line; do
        # VirtualHost start
        if [[ "$line" =~ \<VirtualHost ]]; then
            in_vhost=1
            current_domains=()
            current_port=$(echo "$line" | grep -oP ':[0-9]+' | tr -d ':')
            continue
        fi

        # VirtualHost einde
        if [[ "$line" =~ \</VirtualHost\> ]]; then
            in_vhost=0
            current_domains=()
            current_port=""
            continue
        fi

        if [[ $in_vhost -eq 1 ]]; then
            # ServerName
            if [[ "$line" =~ ^[[:space:]]*ServerName[[:space:]]+ ]]; then
                domain=$(echo "$line" | awk '{print $2}')
                CONFIG_FILES["$domain"]="$conf_file"
                current_domains+=("$domain")
                # Alleen HTTPS markeren
                [[ "$current_port" == "443" ]] && HTTPS_DOMAINS["$domain"]=1
            fi

            # ServerAlias
            if [[ "$line" =~ ^[[:space:]]*ServerAlias[[:space:]]+ ]]; then
                domain=$(echo "$line" | awk '{print $2}')
                CONFIG_FILES["$domain"]="$conf_file"
                current_domains+=("$domain")
                [[ "$current_port" == "443" ]] && HTTPS_DOMAINS["$domain"]=1
            fi

            # Reverse proxy: http(s) only
            if [[ "$line" =~ ^[[:space:]]*ProxyPass[[:space:]]+ ]]; then
                while [[ "$line" =~ ((https?|wss?)://[^[:space:]]+) ]]; do
                    url="${BASH_REMATCH[1]}"
                    for domain in "${current_domains[@]}"; do
                        if [[ -z "${REVERSE_PROXIES[$domain]}" ]]; then
                            REVERSE_PROXIES[$domain]="[[${url}|${url}]]"
                        else
                            # geen dubbele URLs
                            if [[ ! "${REVERSE_PROXIES[$domain]}" =~ "$url" ]]; then
                                REVERSE_PROXIES[$domain]+=", [[${url}|${url}]]"
                            fi
                        fi
                    done
                    # verwijder de eerste match uit line
                    line="${line#*${url}}"
                done
            fi
        fi
    done < "$conf"
done

# Output
{
echo "===== Apache websites overzicht ====="
echo
echo "Automatisch gegenereerd op $DATE"
echo
echo "^ URL ^ Reverse Proxy ^ Config File ^"

for domain in $(printf "%s\n" "${!CONFIG_FILES[@]}" | sort); do
    [[ -n "${HTTPS_DOMAINS[$domain]}" ]] || continue
    url="https://$domain"
    rp="${REVERSE_PROXIES[$domain]:--}"
    conf="${CONFIG_FILES[$domain]}"
    echo "| [[${url}|${url}]] | $rp | $conf |"
done
echo
echo \\\\
echo Hier aanpassen: https://git.de-roo.org/DEROO/ApacheOverzicht/_edit/main/ApacheOverzicht.sh
}