#!/bin/bash
source config-file

echo "Stop minetestsrv service"
systemctl stop minetestsrv

echo "Drop and recreate all databases"
sudo -u postgres dropdb minetest
sudo -u postgres dropdb minetest_players
sudo -u postgres dropdb minetest_auth
sudo -u postgres createdb minetest
sudo -u postgres createdb minetest_players
sudo -u postgres createdb minetest_auth
sudo -u postgres psql -U postgres -d postgres -c "alter user postgres with password '$psql_postgres_user_password';"
sudo -u postgres psql -U postgres -d postgres -c "alter user minetest with password '$psql_minetest_user_password';"

sudo -u postgres psql -U postgres -d postgres -c "grant all privileges on database "minetest" to minetest;"
sudo -u postgres psql -U postgres -d postgres -c "grant all privileges on database "minetest_players" to minetest;"
sudo -u postgres psql -U postgres -d postgres -c "grant all privileges on database "minetest_auth" to minetest;"

echo "Backup minetest.conf"
mv -f /home/minetest/.minetest/minetest.conf /tmp/minetest.conf

echo "Remove /home/minetest"
rm -rf /home/minetest

echo "Clone minetest_game $mt_version"
mkdir -p /home/minetest/.minetest/games/
rm -rf /home/minetest/.minetest/games/minetest
git clone --depth 1 --branch "$mt_version" https://github.com/minetest/minetest_game.git /home/minetest/.minetest/games/minetest

echo "Restore minetest.conf and regenerate world.mt"
mkdir -p /home/minetest/.minetest/worlds/world/
mv -f /tmp/minetest.conf /home/minetest/.minetest/minetest.conf

echo "gameid = minetest" > /home/minetest/.minetest/worlds/world/world.mt
echo "backend = postgresql" >> /home/minetest/.minetest/worlds/world/world.mt
echo "creative_mode = false" >> /home/minetest/.minetest/worlds/world/world.mt
echo "enable_damage = true" >> /home/minetest/.minetest/worlds/world/world.mt
echo "player_backend = postgresql" >> /home/minetest/.minetest/worlds/world/world.mt
echo "auth_backend = postgresql" >> /home/minetest/.minetest/worlds/world/world.mt
echo "pgsql_connection = host=127.0.0.1 user=minetest password=$psql_minetest_user_password dbname=minetest" >> /home/minetest/.minetest/worlds/world/world.mt
echo "pgsql_player_connection = host=127.0.0.1 user=minetest password=$psql_minetest_user_password dbname=minetest_players" >> /home/minetest/.minetest/worlds/world/world.mt
echo "pgsql_auth_connection = host=127.0.0.1 user=minetest password=$psql_minetest_user_password dbname=minetest_auth" >> /home/minetest/.minetest/worlds/world/world.mt

echo "Fix privileges on /home/minetest"
chown minetest:minetest /home/minetest/ -cR

echo "Start minetestsrv service"
systemctl start minetestsrv