#!/bin/bash

if [ -f "include/startup.sh" ]; then
    . include/startup.sh
elif [ -f "../include/startup.sh" ]; then
    . ../include/startup.sh
fi

checkTagExist php.success
checkTagExist httpd.success
checkTagExist mysqld.success

rootDir=$(rootDir)

echo "Installing php ldap" | log
installPackage php7.4-ldap
waitOrStop 0 "Failed to install ldap"

echo "Downloading Zabbix from official repo" | log
curlDownload https://repo.zabbix.com/zabbix/5.4/ubuntu/pool/main/z/zabbix-release/zabbix-release_5.4-1+ubuntu20.04_all.deb
waitOrStop 0 "File not downloaded from official source"

echo "Extracting Zabbix" | log
dpkg -i zabbix-release_5.4-1+ubuntu20.04_all.deb
waitOrStop 0 "Failed to extract application archive"
apt update | log

echo "Installing Zabbix" | log
installPackage zabbix-server-mysql zabbix-frontend-php zabbix-apache-conf zabbix-sql-scripts zabbix-agent
waitOrStop 0 "Failed to install Zabbix"

echo "Creating Zabbix Database" | log
mysql --defaults-file=/root/.my.cnf -h localhost <<EOF
CREATE DATABASE zabbix CHARACTER SET utf8 COLLATE utf8_bin;
CREATE USER 'zabbixuser'@'localhost' identified with mysql_native_password by '${ADMINPASSWORD}';
GRANT all privileges on zabbix.* to zabbixuser@localhost;
FLUSH PRIVILEGES;
EOF

echo "Tweaking Zabbix & PHP configuration" | log
sed -i "s/DBName=zabbix_db/DBName=zabbix/g" /etc/zabbix/zabbix_server.conf
sed -i "s/DBUser=zabbix/DBUser=zabbixuser/g" /etc/zabbix/zabbix_server.conf
sed -i "s/#\sDBPassword=/DBPassword=${ADMINPASSWORD}/g" /etc/zabbix/zabbix_server.conf
sed -i "s/post_max_size = 8M/post_max_size = 32M/g" /etc/php/7.4/fpm/php.ini
sed -i "s/max_input_time = 60/max_input_time = 360/g" /etc/php/7.4/fpm/php.ini
sed -i "s/max_execution_time = 30/max_execution_time = 360/g" /etc/php/7.4/fpm/php.ini
sed -i "s/post_max_size = 8M/post_max_size = 32M/g" /etc/php/8.0/apache2/php.ini
sed -i "s/max_input_time = 60/max_input_time = 360/g" /etc/php/8.0/apache2/php.ini
sed -i "s/max_execution_time = 30/max_execution_time = 360/g" /etc/8.0/apache2/php.ini
sed -i "s/127.0.0.1/0.0.0.0/g" /etc/mysql/mysql.conf.d/mysqld.cnf

echo "Adding FW rules" | log
ufw allow 10050
ufw allow 10051
ufw allow 3306
ufw reload

rm -rf /usr/share/zabbix/conf/zabbix.conf.php
cp $rootDir/tweaks/extras/zabbix/zabbix.conf.php /usr/share/zabbix/conf/
sed -i "s/PASSWORDVAR/${ADMINPASSWORD}/g" /usr/share/zabbix/conf/zabbix.conf.php
unlink /etc/apache2/sites-enabled/default-ssl.conf
cp $rootDir/tweaks/extras/zabbix/zabbix.conf /etc/apache2/sites-available/
sed -i "s/CWMDOMAIN/${CWM_DOMAIN}/g" /etc/apache2/sites-available/zabbix.conf
ln -s /etc/apache2/sites-available/zabbix.conf /etc/apache2/sites-enabled/

echo "Extracting database content" | log
gunzip /usr/share/doc/zabbix-sql-scripts/mysql/create.sql.gz

echo "Enabling and starting SQL" | log
systemctl enable mysql.service
systemctl stop mysql.service
sleep 2
systemctl start mysql.service
sleep 5
waitOrStop 0 "Failed to start SQL"

echo "Importing Zabbix databse" | log
mysql --defaults-file=/root/.my.cnf -h localhost <<EOF
USE zabbix;
source /usr/share/doc/zabbix-sql-scripts/mysql/create.sql;
EOF

systemctl enable zabbix-server
sleep 1
systemctl stop zabbix-server
sleep 1
systemctl start zabbix-server
waitOrStop 0 "Failed to restart Zabbix"
sleep 3
systemctl restart apache2
waitOrStop 0 "Failed to restart Apache"
sleep 3
systemctl restart php7.4-fpm
waitOrStop 0 "Failed to restart php7.4-fpm"
sleep 3

echo "Adding descriptions" | log
descriptionAppend " "
descriptionAppend "Database = zabbix"
descriptionAppend "DBUser = zabbixuser"
descriptionAppend "Zabbix Admin Web UI: https://${CWM_DOMAIN}/zabbix"
descriptionAppend "Zabbix default credentials: User=Admin | Pass=zabbix"
descriptionAppend " "

tagScript success

exit 0