#!/bin/sh

vars="gitd_ip gitd_basepath git_name git_email tinydns_config tinydns__rootsrvrname tinydns__rootsrvrip tinydns__tldsrvrname tinydns__tldsrvrip tinydns__srvrip tinydns__srvrname"

echo "Welcome to the resdb configurator!" >&2
echo >&2

if ! $(echo "$var=${!var}" >/dev/null 2>&1)
then
 echo "Your shell sucks.  If you're using a stupid OS like Ubuntu that doesn't" >&2
 echo "give a damn about backwards compatibility, I'd suggest fixing your" >&2
 echo "default shell, which you can do by typing \"ln -s bash /bin/sh\" at a" >&2
 echo "root shell prompt." >&2
 echo "If you have some ancient Unix system, I'd suggest installing bash." >&2
 echo "If you have questions, you can always bother SRN :-)" >&2
 echo >&2
 echo "dpkg-reconfigure dash -- d3v11" >&2

 exit 1
fi

for var in $vars ; do
 export "$var"="$(cat conf/$var 2>/dev/null)"
done
if [ x"$gitd_basepath" = x ]; then
 gitd_basepath="$(pwd)/"
fi
if [ x"$git_name" = x ]; then
 git_name="Anonymous Coward"
fi
if [ x"$git_email" = x ]; then
 git_email="nobody@nowhere"
fi
if [ x"$tinydns_config" = x ]; then
 tinydns_config=n
fi
if [ x"$tinydns__rootsrvrname" = x ]; then
 tinydns__rootsrvrname="uz5hn5hz5x5bp09p5z2806x4gngcw1k5j2wk88fuvkth5pp2hw4t2d.rootns.somerandomnick.ano"
fi
if [ x"$tinydns__rootsrvrip" = x ]; then
 tinydns__rootsrvrip="1.0.27.39"
fi
if [ x"$tinydns__tldsrvrname" = x ]; then
 tinydns__tldsrvrname="uz5fvb7zdqyuz4q8ysjdfuf04kzd2lrt0l6fp4uyguxdg5tfut06ck.anons.somerandomnick.ano"
fi
if [ x"$tinydns__tldsrvrip" = x ]; then
 tinydns__tldsrvrip="1.0.27.37"
fi
if [ x"$tinydns__srvrname" = x ]; then
 tinydns__srvrname="uz5z6spsd4jsd2k984wuzknr13gwjc630gmvtcv4bmpsrb04c179h1.ns.somerandomnick.ano"
fi
if [ x"$tinydns__srvrip" = x ]; then
 tinydns__srvrip="1.0.27.86"
fi

echo "Please enter the IP address you'd like gitd to listen on." >&2
echo "(Default: $gitd_ip)" >&2
echo -n "IP? " >&2
read new_gitd_ip
if [ x"$new_gitd_ip" != x ]; then
 gitd_ip="$new_gitd_ip"
fi

echo "Please enter the full path to resdb." >&2
echo "(Default: $gitd_basepath)" >&2
echo -n "BasePath? " >&2
read new_gitd_basepath
if [ x"$new_gitd_basepath" != x ]; then
 gitd_basepath="$new_gitd_basepath"
fi

echo "Please enter your name." >&2
echo "(Default: $git_name)" >&2
echo -n "Name? " >&2
read new_git_name
if [ x"$new_git_name" != x ]; then
 git_name="$new_git_name"
fi

echo "Please enter your email." >&2
echo "(Default: $git_email)" >&2
echo -n "Email? " >&2
read new_git_email
if [ x"$new_git_email" != x ]; then
 git_email="$new_git_email"
fi

echo -n "Would you like to configure the tinydns datafile generator? " >&2
read new_tinydns_config
if [ x"$new_tinydns_config" != x ]; then
 tinydns_config="$new_tinydns_config"
fi
if [ x"$tinydns_config" = xy ]; then
 echo "Please enter the hostname of your root nameserver." >&2
 echo "(Default: $tinydns__rootsrvrname)" >&2
 echo -n "RootSrvName? " >&2
 read new_tinydns__rootsrvrname
 if [ x"$new_tinydns__rootsrvrname" != x ]; then
  tinydns__rootsrvrname="$new_tinydns__rootsrvrname"
 fi

 echo "Please enter the IP address of your root nameserver." >&2
 echo "(Default: $tinydns__rootsrvrip)" >&2
 echo -n "RootSrvIP? " >&2
 read new_tinydns__rootsrvrip
 if [ x"$new_tinydns__rootsrvrip" != x ]; then
  tinydns__rootsrvrip="$new_tinydns__rootsrvrip"
 fi

 echo "Please enter the hostname of your .ano TLD server." >&2
 echo "(Default: $tinydns__tldsrvrname)" >&2
 echo -n "TLDSrvName? " >&2
 read new_tinydns__tldsrvrname
 if [ x"$new_tinydns__tldsrvrname" != x ]; then
  tinydns__tldsrvrname="$new_tinydns__tldsrvrname"
 fi

 echo "Please enter the IP address of your .ano TLD server." >&2
 echo "(Default: $tinydns__tldsrvrip)" >&2
 echo -n "TLDSrvIP? " >&2
 read new_tinydns__tldsrvrip
 if [ x"$new_tinydns__tldsrvrip" != x ]; then
  tinydns__tldsrvrip="$new_tinydns__tldsrvrip"
 fi

 echo "Please enter the hostname of your nameserver." >&2
 echo "(Default: $tinydns__srvrname)" >&2
 echo -n "SrvName? " >&2
 read new_tinydns__srvrname
 if [ x"$new_tinydns__srvrname" != x ]; then
  tinydns__srvrname="$new_tinydns__srvrname"
 fi

 echo "Please enter the IP address of your nameserver." >&2
 echo "(Default: $tinydns__srvrip)" >&2
 echo -n "SrvIP? " >&2
 read new_tinydns__srvrip
 if [ x"$new_tinydns__srvrip" != x ]; then
  tinydns__srvrip="$new_tinydns__srvrip"
 fi
fi

echo "Proposed configuration:" >&2
for var in $vars ; do
 echo "$var=${!var}" >&2
done
echo -n "To write the configuration, hit RETURN.  To abort, hit ^C: " >&2
read write_config

echo -n "Writing configuration... " >&2
mkdir -p conf || exit 1
for var in $vars ; do
 echo "${!var}" > conf/"$var" || exit 1
done
echo "Done" >&2

echo -n "Updating git configuration... " >&2
cd "$(cat ./conf/gitd_basepath)" || exit 1
git config user.name "$(cat ./conf/git_name)" || exit 1
git config user.email "$(cat ./conf/git_email)" || exit 1
echo "Done" >&2