#!/bin/sh -e

set -e
. /usr/share/debconf/confmodule

if [ "$1" = configure ]; then
    mkdir -p /etc/loki
    datadir=/var/lib/lokinet/router
    tn_datadir=/var/lib/lokinet/testnet-router
    mkdir -p $datadir $tn_datadir /var/lib/lokinet/testnet
    for d in $datadir $tn_datadir /var/lib/lokinet/testnet; do
        su -s /bin/sh _lokinet -c "test -O $d && test -G $d" || \
            chown _lokinet:_loki $d
    done

    tmpdir=$(mktemp --tmpdir -d lokinet.XXXXXXXXXX)
    /usr/bin/lokinet -r -g $tmpdir/lokinet.ini
    perl -pi -e "
        s#$tmpdir#$datadir#;
        if (/^\[lokid/ ... /^\[/) {
            s{^#?enabled=.*}{enabled=1};
            s{^#?rpc=.*}{rpc=ipc:///var/lib/oxen/oxend.sock};
        }" $tmpdir/lokinet.ini
    chmod 640 $tmpdir/lokinet.ini
    chgrp _loki $tmpdir/lokinet.ini
    ucf --debconf-ok $tmpdir/lokinet.ini /etc/loki/lokinet-router.ini
    ucfr lokinet /etc/loki/lokinet-router.ini

    tmpdir=$(mktemp --tmpdir -d lokinet.XXXXXXXXXX)
    /usr/bin/lokinet -r -g $tmpdir/lokinet.ini
    perl -pi -e "
        s#$tmpdir#$tn_datadir#;
        if (/^\[router/ ... /^\[/) {
            s{^#?netid=.*}{netid=gamma};
        }
        if (/^\[lokid/ ... /^\[/) {
            s{^#?enabled=.*}{enabled=1};
            s{^#?rpc=.*}{rpc=ipc:///var/lib/oxen/testnet/oxend.sock};
        }" $tmpdir/lokinet.ini
    chmod 640 $tmpdir/lokinet.ini
    chgrp _loki $tmpdir/lokinet.ini
    ucf --debconf-ok $tmpdir/lokinet.ini /etc/loki/lokinet-testnet-router.ini
    ucfr lokinet /etc/loki/lokinet-testnet-router.ini

    # If this system has only private IPs and warn the user that they need to update the config file
    if ! grep -q '^public-\(ip\|address\)=' /etc/loki/lokinet-router.ini; then
        if ! ip -4 addr show | perl -le '
            while (<>) {
                next if !m{^ +inet +(\d+)\.(\d+)\.(\d+)\.(\d+)/};
                exit 0 if not ($1 == 0 or $1 == 10 or ($1 == 100 and ($2 >= 64 and $2 <= 127)) or $1 == 127 or
                    ($1 == 169 and $1 == 254) or ($1 == 172 and $2 >= 16 and $2 <= 31) or ($1 == 192 and $2 == 168) or $1 >= 224);
            }
            exit 1'; then

            db_reset lokinet-router/no-public-ip || true
            db_input critical lokinet-router/no-public-ip || true
            db_go || true
        fi
    fi
fi

#DEBHELPER#