#!/bin/bash
# info: synchronize dns domains
#
# The function synchronize all dns domains.


#----------------------------------------------------------#
#                    Variable&Function                     #
#----------------------------------------------------------#

# Argument defenition
verbose=$1

# Includes
source $VESTA/conf/vesta.conf
source $VESTA/func/main.sh
source $VESTA/func/remote.sh


#----------------------------------------------------------#
#                    Verifications                         #
#----------------------------------------------------------#

is_system_enabled "$DNS_CLUSTER"

if [ ! -e "$VESTA/conf/dns-cluster.conf" ]; then
    echo "Error: dns-cluster.conf doesn't exist"
    log_event "$E_NOTEXIST $EVENT"
    exit $E_NOTEXIST
fi

number_of_proc=$(ps auxf | grep -v grep | grep $VESTA/bin/$SCRIPT | wc -l)
if [ "$number_of_proc" -gt 2 ]; then
    echo "Error: another sync process already exists"
    log_event "$E_EXISTS $EVENT"
    exit $E_EXISTS
fi


#----------------------------------------------------------#
#                       Action                             #
#----------------------------------------------------------#

old_ifs="$IFS"
IFS=$'\n'

# Starting cluster loop
for cluster_str in $(cat $VESTA/conf/dns-cluster.conf); do

    # Get host values
    eval $cluster_str

    # Check connection type
    if [ -z "TYPE" ]; then
        TYPE='api'
    fi

    # Print hostname
    if [ ! -z "$verbose" ]; then
        echo "HOSTNAME: $HOSTNAME"
        echo "TYPE: $TYPE"
    fi

    # Switch on connection type
    case $TYPE in
        ssh) send_cmd="send_ssh_cmd" ;;
        *)  send_cmd="send_api_cmd" ;;
    esac

    # Check host connection
    $send_cmd v-list-sys-config
    if [ $? -ne 0 ]; then
        echo "Error: $TYPE connection to $HOST failed"
        log_event "$E_CONNECT $EVENT"
        exit $E_CONNECT
    fi

    # Check recipient dns user
    if [ -z "$DNS_USER" ]; then
        DNS_USER='dns-cluster'
    fi
    if [ ! -z "$verbose" ]; then
        echo "DNS_USER: $DNS_USER"
    fi
    $send_cmd v-list-user $DNS_USER
    if [ $? -ne 0 ]; then
        echo "Error: dns user $DNS_USER doesn't exist"
        log_event "$E_NOTEXIST $EVENT"
        exit $E_NOTEXIST
    fi

    # Check dns exceptions
    if [ -z "$DNS_CLUSTER_IGNORE" ]; then
        DNS_CLUSTER_IGNORE='dns-cluster'
    fi

    # Create userlist
    user_list=$(ls $VESTA/data/users)
    for exception in $(echo -e "${DNS_CLUSTER_IGNORE//,/\n}"); do 
        user_list=$(echo "$user_list" | grep -v "^$exception$")
    done

    # Clean source records
    $send_cmd v-delete-dns-domains-src $DNS_USER $HOSTNAME no
    if [ $? -ne 0 ]; then
        echo "Error: $TYPE connection to $HOST failed (cleanup)"
        log_event "$E_CONNECT $EVENT"
        exit $E_CONNECT
    fi

    # Clean queue
    rm -f $VESTA/data/queue/dns-cluster.pipe
    touch $VESTA/data/queue/dns-cluster.pipe
    chmod 660 $VESTA/data/queue/dns-cluster.pipe

    # Start user loop
    for user in $user_list; do

        # Sync domain
        for str in $(cat $VESTA/data/users/$user/dns.conf); do
            eval $str
            if [ ! -z "$verbose" ]; then
                echo "DOMAIN: $DOMAIN"
            fi
            $send_cmd v-insert-dns-domain $DNS_USER "$str" $HOSTNAME

            # Sync record
            if [ "$TYPE" = 'ssh' ]; then
                tmp=$(mktemp -u)
                scp_cmd $USER_DATA/$user/dns/$DOMAIN.conf $tmp
                $send_cmd v-insert-dns-records $DNS_USER $DOMAIN $tmp
            else
                for str in $(cat $USER_DATA/$user/dns/$DOMAIN.conf); do
                    str=$(echo "$str" | sed 's/"/\\"/g')
                    $send_cmd v-insert-dns-record \
                        $DNS_USER $DOMAIN "$str"
                done
            fi
        done
    done

    # Rebuild dns zones
    $send_cmd v-rebuild-dns-domains $DNS_USER
    if [ $? -ne 0 ]; then
        echo "Error: $TYPE connection to $HOST failed (rebuild)"
        log_event "$E_CONNECT $EVENT"
        exit $E_CONNECT
    fi

done


#----------------------------------------------------------#
#                       Vesta                              #
#----------------------------------------------------------#

exit