#!/bin/bash

GITEA_FULL_DOMAIN=${GITEA_SERVER_NAME}.${GITEA_DOMAIN}

# set LDAP password from secret
if [ ! -z $LDAP_BIND_PWD_FILE -a -f $LDAP_BIND_PWD_FILE ]; then
    LDAP_BIND_PWD=`cat $LDAP_BIND_PWD_FILE`;
fi

GITEA_DB_PWD=`openssl rand -base64 20`

# set Admin password from secret
if [ ! -z $GITEA_ADMIN_PWD_FILE -a -f $GITEA_ADMIN_PWD_FILE ]; then
    GITEA_ADMIN_PWD=`cat $GITEA_ADMIN_PWD_FILE`;
fi

# check needed variables
if [[ -z ${DB_HOST} || -z ${GITEA_DB_NAME} \
          || -z ${GITEA_DB_USER}  || -z ${GITEA_DB_PWD} \
          || -z ${GITEA_ADMIN_PWD} || -z ${ADMIN_EMAIL} \
          || -z ${LDAP_SERVER_HOST} || -z ${LDAP_BIND_DN} \
          || -z ${LDAP_BIND_PWD} || -z ${LDAP_SEARCH_BASE} \
    ]];
then
    echo "Missing variable! You must provide: DB_HOST, GITEA_DB_NAME, \
GITEA_DB_USER, GITEA_DB_PWD, GITEA_ADMIN_PWD, ADMIN_EMAIL and LDAP stuff";
    echo $DB_HOST, $GITEA_DB_NAME, $GITEA_DB_USER, ${#GITEA_DB_PWD}
    echo ${#GITEA_ADMIN_PWD}, ${ADMIN_EMAIL},
    echo ${LDAP_SERVER_HOST}, ${LDAP_BIND_DN}, ${#LDAP_BIND_PWD}, ${LDAP_SEARCH_BASE}
    #env;
    exit 1;
fi

function check_result {
    if [ $1 != 0 ]; then
        echo "Error: $2";
        exit 1;
    fi
}

# ### DB setup ###

# wait for DB to be ready
sleep 60 # to avoid hitting it while the first start for setting root pwd
R=111
while [ $R -eq 111 ]; do
    mysql -u root -p${MYSQL_ROOT_PWD} -h ${DB_HOST} -e "SHOW DATABASES"  2> /dev/null;
    R=$?;
done

# check if DB exists
DB_EXISTS=$(mysql -u root -p${MYSQL_ROOT_PWD} -h ${DB_HOST} -e "SHOW DATABASES" 2> /dev/null | grep ${GITEA_DB_NAME})
echo DB exists: ${DB_EXISTS}

if [ -z "${DB_EXISTS}" ]; then
    echo Creating Database
    #mysql -u root -p${MYSQL_ROOT_PWD} -h ${DB_HOST} -e "DROP DATABASE IF EXISTS ${GITEA_DB_NAME};"
    #check_result $? "Dropping DB"
    mysql -u root -p${MYSQL_ROOT_PWD} -h ${DB_HOST} -e "CREATE DATABASE ${GITEA_DB_NAME};"
    check_result $? "Creating DB"
fi

echo Creating User
# 'IF EXISTS' for DROP USER is available from MariaDB 10.1.3 only
mysql -u root -p${MYSQL_ROOT_PWD} -h ${DB_HOST} -e "DROP USER ${GITEA_DB_USER};" || echo "It seems it didn't exist"
mysql -u root -p${MYSQL_ROOT_PWD} -h ${DB_HOST} -e "CREATE USER ${GITEA_DB_USER} IDENTIFIED BY '${GITEA_DB_PWD}';"
check_result $? "Creating User"
mysql -u root -p${MYSQL_ROOT_PWD} -h ${DB_HOST} -e "GRANT ALL ON ${GITEA_DB_NAME}.* TO ${GITEA_DB_USER};"
check_result $? "Granting permissions"
mysql -u root -p${MYSQL_ROOT_PWD} -h ${DB_HOST} -e "FLUSH PRIVILEGES;"
check_result $? "Flushing privileges"

unset MYSQL_ROOT_PWD


# ### Conf file ###

echo Tweaking config files
CONF_FILE=${GITEA_CUSTOM}/conf/app.ini

# We need to re-generate conf file because we are changing DB pwd
#if [[ ! -e ${CONF_FILE} ]]; then
mkdir -p ${GITEA_CUSTOM}/conf
mv /home/${USER}/app.ini ${CONF_FILE}
chown -R ${USER} ${GITEA_CUSTOM}

echo Setting domain
sed -i "s/GITEA_FULL_DOMAIN/${GITEA_FULL_DOMAIN}/g" ${CONF_FILE}

# DB conf
echo Setting DB conf
sed -i "s/DB_HOST/${DB_HOST}/g" ${CONF_FILE}
sed -i "s/GITEA_DB_NAME/${GITEA_DB_NAME}/g" ${CONF_FILE}
sed -i "s/GITEA_DB_USER/${GITEA_DB_USER}/g" ${CONF_FILE}
sed -i "s/GITEA_DB_PWD/${GITEA_DB_PWD//\//\\/}/g" ${CONF_FILE}
#fi


# Create admin user if DB was new
if [ -z "${DB_EXISTS}" ]; then
    su git -c "gitea admin create-user --username admin --password ${GITEA_ADMIN_PWD} --admin --email ${ADMIN_EMAIL}"
fi

# LDAP
su git -c "gitea admin auth add-ldap \
      --name ldap \
      --security-protocol unencrypted \
      --host ${LDAP_SERVER_HOST} \
      --port 389 \
      --bind-dn ${LDAP_BIND_DN} \
      --bind-password ${LDAP_BIND_PWD} \
      --user-search-base ${LDAP_SEARCH_BASE} \
      --user-filter \"(&(objectclass=*)(|(uniqueIdentifier=%s)(mail=%s)))\" \
      --username-attribute uniqueIdentifier \
      --firstname-attribute givenName \
      --surname-attribute sn \
      --email-attribute mail"

exec /bin/s6-svscan /etc/s6