#!/bin/sh

echo ""
echo "Welcome to ngxproxy utility."
echo "We're about to create a new vhost."
echo ""

while [ "$NAME" == "" ]; do
    read -p "Name: " NAME
    if [ -f "/sites-enabled/$NAME.conf" ]; then
        echo "ERROR: /sites-enabled/$NAME.conf already exists."
        exit 1
    fi
done

while [ "$DOMAIN" == "" ]; do
    read -p "Domain: " DOMAIN
    if [ "$(dig +short $DOMAIN)" == "" ]; then
        echo "WARNING: $DOMAIN couldn't be resolved. It may not work!"
        echo "HINT: Is this domain correct? Did you update your DNS zone?"
    fi
done

while [ "$CONTAINER" == "" ]; do
    read -p "Container: " CONTAINER
    ping -c 1 $CONTAINER >/dev/null 2>&1
    if [ "$?" != "0" ]; then
        echo "WARNING: $CONTAINER seems to be unavailable. It may not work!"
        echo "HINT: Did you correctly link the container?"
    fi
done

read -p "Port (default is 80): " PORT

if [ "$PORT" == "" ]; then
    PORT="80"
fi

while [[ "$HTTPS" !=  "y" && "$HTTPS" != "n" ]]; do
    read -p "HTTPS [y/n]: " HTTPS
done

if [ "$HTTPS" == "y" ]; then
    while [ ! -f "$CERTIFICATE_PATH" ]; do
        read -p "Certificate path: " CERTIFICATE_PATH
    done
    
    while [ ! -f "$KEY_PATH" ]; do
        read -p "Certificate key path: " KEY_PATH
    done
    
    cp /etc/nginx/conf/vhost_https.conf /sites-enabled/${NAME}.conf
    
    sed -i \
        -e "s|<CERTIFICATE_PATH>|$CERTIFICATE_PATH|g" \
        -e "s|<KEY_PATH>|$KEY_PATH|g" \
        /sites-enabled/$NAME.conf

    while [[ "$HEADERS" !=  "y" && "$HEADERS" != "n" ]]; do
        read -p "Secure headers [y/n]: " HEADERS
    done

    if [ "$HEADERS" == "y" ]; then
        sed -i 's|#include /etc/nginx/conf/headers_params|include /etc/nginx/conf/headers_params|g' \
            /sites-enabled/$NAME.conf
    fi
else
    cp /etc/nginx/conf/vhost_http.conf /sites-enabled/${NAME}.conf
fi

while [ "$MAX_BODY_SIZE" == "" ]; do
    read -p "Max body size (value in MB, or n): " MAX_BODY_SIZE
    if ! [ "$MAX_BODY_SIZE" -eq "$MAX_BODY_SIZE" ] 2>/dev/null; then
        if [ "$MAX_BODY_SIZE" != "n" ]; then
            echo "ERROR: Incorrect value. Not an integer value."
            exit 1
        fi
    fi
done

if [ "$MAX_BODY_SIZE" != "n" ]; then
    sed -i "s|<MAX_BODY_SIZE>|$MAX_BODY_SIZE|g" /sites-enabled/$NAME.conf
else
    sed -i '/client_max_body_size/d' /sites-enabled/$NAME.conf
fi

sed -i \
    -e "s|<DOMAIN>|$DOMAIN|g" \
    -e "s|<CONTAINER>|$CONTAINER|g" \
    -e "s|<PORT>|$PORT|g" \
    /sites-enabled/$NAME.conf

echo ""
echo "It's done : $NAME.conf has been generated."

while [[ "$RELOAD" !=  "y" && "$RELOAD" != "n" ]]; do
    read -p "Reload nginx now? [y/n]: " RELOAD
done

if [ "$RELOAD" == "y" ]; then
    su-exec $UID:$GID nginx -s reload
    echo "nginx successfully reloaded."
else
    echo "Restart manually nginx to enable this new vhost."
fi

echo ""
exit 0