#!/bin/bash

set -e

# Variables
POSTGRES_USER=alfresco
POSTGRES_PASSWORD=alfresco
POSTGRES_DB=alfresco

JAVA_HOME=/usr/lib/jvm/java-17-openjdk
TOMCAT_VERSION=10.1.26
TOMCAT_USER=rheluser
TOMCAT_GROUP=rheluser
TOMCAT_HOME=/home/rheluser/tomcat

ACTIVEMQ_VERSION=5.18.5
ACTIVEMQ_USER=rheluser
ACTIVEMQ_GROUP=rheluser
ACTIVEMQ_HOME=/home/rheluser/activemq

SOLR_VERSION=2.0.9.1
SOLR_USER=rheluser
SOLR_GROUP=rheluser
SOLR_HOME=/home/rheluser/alfresco-search-services

TRANSFORM_JAR=alfresco-transform-core-aio-5.1.0.jar
TRANSFORM_USER=rheluser
TRANSFORM_GROUP=rheluser
TRANSFORM_HOME=/home/rheluser/transform

NODEJS_SETUP_URL="/root/RHEL_full_install_alfresco_addon.sh"
CONTENT_APP_REPO=https://github.com/Alfresco/alfresco-content-app.git
CONTENT_APP_VERSION=4.4.1
NGINX_CONF_PATH=/etc/nginx/conf.d/alfresco-content-app.conf
NGINX_ROOT=/var/www/alfresco-content-app

# Helper function to print and execute commands
execute() {
    echo "$ $@"
    "$@"
}
# Anlegen des Users und Gruppe
user_add_and_group(){
    execute sudo groupadd rheluser
    execute sudo useradd -m -g rheluser rheluser
}

# Update and upgrade the system
00_update_system() {
    echo "Updating system..."
    execute sudo dnf update -y
}

# Install PostgreSQL and configure database
01_install_postgresql() {
    echo "Installing PostgreSQL..."
    execute sudo dnf install -y postgresql-server postgresql-contrib

    echo "Initializing PostgreSQL database..."
    execute sudo postgresql-setup --initdb

    echo "Configuring PostgreSQL..."
    execute sudo sed -i 's/local\s\+all\s\+postgres\s\+peer/local   all             postgres                                trust/' /var/lib/pgsql/data/pg_hba.conf
    execute sudo sed -i 's/local\s\+all\s\+all\s\+peer/local   all             all                                md5/' /var/lib/pgsql/data/pg_hba.conf

    echo "Starting PostgreSQL service..."
    execute sudo systemctl start postgresql
    execute sudo systemctl enable postgresql

    echo "Configuring Alfresco database..."
    execute sudo -u postgres psql -c "CREATE USER ${POSTGRES_USER} WITH PASSWORD '$POSTGRES_PASSWORD';"
    execute sudo -u postgres psql -c "CREATE DATABASE ${POSTGRES_DB} OWNER ${POSTGRES_USER} ENCODING 'UTF8';"
    execute sudo -u postgres psql -c "GRANT ALL PRIVILEGES ON DATABASE ${POSTGRES_DB} TO ${POSTGRES_USER};"
}

# Install Java JDK 17
02_install_java() {
    echo "Installing Java JDK 17..."
    execute sudo dnf install -y java-17-openjdk

    echo "Checking Java version..."
    execute java -version
}

# Install Apache Tomcat
03_install_tomcat() {
    echo "Downloading and installing Apache Tomcat..."
    execute wget https://dlcdn.apache.org/tomcat/tomcat-10/v$TOMCAT_VERSION/bin/apache-tomcat-$TOMCAT_VERSION.tar.gz -O /tmp/apache-tomcat-$TOMCAT_VERSION.tar.gz
    execute sudo mkdir -p $TOMCAT_HOME
    execute sudo tar xzvf /tmp/apache-tomcat-$TOMCAT_VERSION.tar.gz -C $TOMCAT_HOME --strip-components=1

    echo "Setting permissions for Tomcat directories..."
    execute sudo chown -R $TOMCAT_USER:$TOMCAT_GROUP $TOMCAT_HOME
    execute sudo chmod -R u+x $TOMCAT_HOME/bin

    echo "Creating Tomcat systemd service file..."
    cat <<EOL | sudo tee /etc/systemd/system/tomcat.service
[Unit]
Description=Apache Tomcat Web Application Container
After=network.target

[Service]
Type=forking

User=$TOMCAT_USER
Group=$TOMCAT_GROUP

Environment="JAVA_HOME=$JAVA_HOME"
Environment="CATALINA_PID=$TOMCAT_HOME/temp/tomcat.pid"
Environment="CATALINA_HOME=$TOMCAT_HOME"
Environment="CATALINA_BASE=$TOMCAT_HOME"
Environment="CATALINA_OPTS=-Xms2048M -Xmx3072M -server -XX:MinRAMPercentage=50 -XX:MaxRAMPercentage=80"
Environment="JAVA_OPTS=-Djava.awt.headless=true -Djava.security.egd=file:/dev/./urandom"
Environment="JAVA_TOOL_OPTIONS=-Dencryption.keystore.type=JCEKS -Dencryption.cipherAlgorithm=DESede/CBC/PKCS5Padding -Dencryption.keyAlgorithm=DESede -Dencryption.keystore.location=/home/rheluser/keystore/metadata-keystore/keystore -Dmetadata-keystore.password=mp6yc0UD9e -Dmetadata-keystore.aliases=metadata -Dmetadata-keystore.metadata.password=oKIWzVdEdA -Dmetadata-keystore.metadata.algorithm=DESede"

ExecStart=$TOMCAT_HOME/bin/startup.sh
ExecStop=$TOMCAT_HOME/bin/shutdown.sh

[Install]
WantedBy=multi-user.target
EOL

    echo "Reloading systemd daemon..."
    execute sudo systemctl daemon-reload

    echo "Starting Tomcat service..."
    execute sudo systemctl start tomcat

    echo "Stopping Tomcat service..."
    execute sudo systemctl stop tomcat

    echo "Enabling Tomcat service to start on boot..."
    execute sudo systemctl enable tomcat
}

# Install Apache ActiveMQ
04_install_activemq() {
    echo "Downloading and installing Apache ActiveMQ..."
    execute wget https://dlcdn.apache.org/activemq/$ACTIVEMQ_VERSION/apache-activemq-$ACTIVEMQ_VERSION-bin.tar.gz -O /tmp/apache-activemq-$ACTIVEMQ_VERSION-bin.tar.gz
    execute sudo mkdir -p $ACTIVEMQ_HOME
    execute sudo tar xzvf /tmp/apache-activemq-$ACTIVEMQ_VERSION-bin.tar.gz -C $ACTIVEMQ_HOME --strip-components=1

    echo "Setting permissions for ActiveMQ directories..."
    execute sudo chown -R $ACTIVEMQ_USER:$ACTIVEMQ_GROUP $ACTIVEMQ_HOME
    execute sudo chmod -R 755 $ACTIVEMQ_HOME

    echo "Creating ActiveMQ systemd service file..."
    cat <<EOL | sudo tee /etc/systemd/system/activemq.service
[Unit]
Description=Apache ActiveMQ
After=network.target

[Service]
Type=forking

User=$ACTIVEMQ_USER
Group=$ACTIVEMQ_GROUP

Environment="JAVA_HOME=$JAVA_HOME"
Environment="ACTIVEMQ_HOME=$ACTIVEMQ_HOME"
Environment="ACTIVEMQ_BASE=$ACTIVEMQ_HOME"
Environment="ACTIVEMQ_CONF=$ACTIVEMQ_HOME/conf"
Environment="ACTIVEMQ_DATA=$ACTIVEMQ_HOME/data"

ExecStart=$ACTIVEMQ_HOME/bin/activemq start
ExecStop=$ACTIVEMQ_HOME/bin/activemq stop

[Install]
WantedBy=multi-user.target
EOL

    echo "Reloading systemd daemon..."
    execute sudo systemctl daemon-reload

    echo "Starting ActiveMQ service..."
    execute sudo systemctl start activemq

    echo "Stopping ActiveMQ service..."
    execute sudo systemctl stop activemq

    echo "Enabling ActiveMQ service to start on boot..."
    execute sudo systemctl enable activemq
}
# Download Content
05_down_content(){

    # Ensure system is updated and curl is installed
    echo "Updating package list and installing curl..."
    sudo dnf update -y
    sudo dnf install -y curl

    # URLs of the resources to be downloaded
    URLS=(
    "https://nexus.alfresco.com/nexus/repository/releases/org/alfresco/alfresco-content-services-community-distribution/23.2.1/alfresco-content-services-community-distribution-23.2.1.zip"
    "https://nexus.alfresco.com/nexus/repository/releases/org/alfresco/alfresco-search-services/2.0.9.1/alfresco-search-services-2.0.9.1.zip"
    "https://nexus.alfresco.com/nexus/repository/releases/org/alfresco/alfresco-transform-core-aio/5.1.0/alfresco-transform-core-aio-5.1.0.jar"
    )

    # Directory to save the downloaded files
    DOWNLOAD_DIR="./downloads"

    # Create the download directory if it does not exist
    mkdir -p "$DOWNLOAD_DIR"

    # Function to download a file
    download_file() {
    local url=$1
    local dest_dir=$2
    local filename=$(basename "$url")

    echo "Downloading $filename..."
    curl -L -o "$dest_dir/$filename" -w "\nHTTP Status: %{http_code}\n" "$url"

    if [ $? -eq 0 ]; then
        echo "Downloaded $filename successfully."
    else
        echo "Failed to download $filename."
    fi

    # Check if the file size is greater than 0 bytes
    if [ ! -s "$dest_dir/$filename" ]; then
        echo "Warning: Downloaded file $filename is empty."
    fi
    }

    # Loop through each URL and download the file
    for url in "${URLS[@]}"; do
     download_file "$url" "$DOWNLOAD_DIR"
    done

    echo "All downloads are complete."

}

# Install Alfresco Community Edition
06_install_alfresco(){

    set -e

    echo "Install unzip command"
    execute sudo dnf -y install unzip

    echo "Create support folders and configuration in Tomcat"
    mkdir -p /home/rheluser/tomcat/shared/classes && mkdir -p /home/rheluser/tomcat/shared/lib
    sed -i 's|^shared.loader=$|shared.loader=${catalina.base}/shared/classes,${catalina.base}/shared/lib/*.jar|' /home/rheluser/tomcat/conf/catalina.properties

    echo "Unzip Alfresco ZIP Distribution File"
    mkdir /tmp/alfresco
    unzip downloads/alfresco-content-services-community-distribution-23.2.1.zip -d /tmp/alfresco

    echo "Copy JDBC driver"
    cp /tmp/alfresco/web-server/lib/postgresql-42.6.0.jar /home/rheluser/tomcat/shared/lib/

    echo "Configure JAR Addons deployment"
    mkdir -p /home/rheluser/modules/platform && mkdir -p /home/rheluser/modules/share && mkdir -p /home/rheluser/tomcat/conf/Catalina/localhost
    cp /tmp/alfresco/web-server/conf/Catalina/localhost/* /home/rheluser/tomcat/conf/Catalina/localhost/

    echo "Install Web Applications"
    cp /tmp/alfresco/web-server/webapps/* /home/rheluser/tomcat/webapps/

    echo "Apply configuration"
    cp -r /tmp/alfresco/web-server/shared/classes/* /home/rheluser/tomcat/shared/classes/
    mkdir /home/rheluser/keystore && cp -r /tmp/alfresco/keystore/* /home/rheluser/keystore/
    mkdir /home/rheluser/alf_data
cat <<EOL | tee /home/rheluser/tomcat/shared/classes/alfresco-global.properties
#
# Custom content and index data location
#
dir.root=/home/rheluser/alf_data
dir.keystore=/home/rheluser/keystore/

#
# Database connection properties
#
db.username=alfresco
db.password=alfresco
db.driver=org.postgresql.Driver
db.url=jdbc:postgresql://localhost:5432/alfresco

#
# Solr Configuration
#
solr.secureComms=secret
solr.sharedSecret=secret
solr.host=localhost
solr.port=8983
index.subsystem.name=solr6

#
# Transform Configuration
#
localTransform.core-aio.url=http://localhost:8090/

#
# Events Configuration
#
messaging.broker.url=failover:(nio://localhost:61616)?timeout=3000&jms.useCompression=true

#
# URL Generation Parameters
#-------------
alfresco.context=alfresco
alfresco.host=localhost
alfresco.port=8080
alfresco.protocol=http
share.context=share
share.host=localhost
share.port=8080
share.protocol=http
EOL

    echo "Apply AMPs"
    mkdir /home/rheluser/amps && cp -r /tmp/alfresco/amps/* /home/rheluser/amps/
    mkdir /home/rheluser/bin && cp -r /tmp/alfresco/bin/* /home/rheluser/bin/
    java -jar /home/rheluser/bin/alfresco-mmt.jar install /home/rheluser/amps /home/rheluser/tomcat/webapps/alfresco.war -directory
    java -jar /home/rheluser/bin/alfresco-mmt.jar list /home/rheluser/tomcat/webapps/alfresco.war

    echo "Modify alfresco and share logs directory"
    mkdir /home/rheluser/tomcat/webapps/alfresco && unzip /home/rheluser/tomcat/webapps/alfresco.war -d /home/rheluser/tomcat/webapps/alfresco
    mkdir /home/rheluser/tomcat/webapps/share && unzip /home/rheluser/tomcat/webapps/share.war -d /home/rheluser/tomcat/webapps/share
    sed -i 's|^appender\.rolling\.fileName=alfresco\.log|appender.rolling.fileName=/home/rheluser/tomcat/logs/alfresco.log|' /home/rheluser/tomcat/webapps/alfresco/WEB-INF/classes/log4j2.properties
    sed -i 's|^appender\.rolling\.fileName=share\.log|appender.rolling.fileName=/home/rheluser/tomcat/logs/share.log|' /home/rheluser/tomcat/webapps/share/WEB-INF/classes/log4j2.properties

    echo "Alfresco has been configured"

}
# Install Apache Solr
07_install_solr() {
    echo "Downloading and installing Apache Solr..."
    execute mkdir /tmp/solr
    execute unzip downloads/alfresco-search-services-$SOLR_VERSION.zip -d /tmp/solr
    execute mv /tmp/solr/alfresco-search-services /home/rheluser

    echo "Creating Solr systemd service file..."
    cat <<EOL | sudo tee /etc/systemd/system/solr.service
[Unit]
Description=Apache SOLR Web Application Container
After=network.target

[Service]
Type=forking

User=$SOLR_USER
Group=$SOLR_GROUP

Environment="JAVA_HOME=$JAVA_HOME"

ExecStart=/home/rheluser/alfresco-search-services/solr/bin/solr start -a "-Dcreate.alfresco.defaults=alfresco,archive -Dalfresco.secureComms=secret -Dalfresco.secureComms.secret=secret"
ExecStop=/home/rheluser/alfresco-search-services/solr/bin/solr stop

[Install]
WantedBy=multi-user.target
EOL

    echo "Reloading systemd daemon..."
    execute sudo systemctl daemon-reload

    echo "Starting Solr service..."
    execute sudo systemctl start solr

    echo "Stopping Solr service..."
    execute sudo systemctl stop solr

    echo "Enabling Solr service to start on boot..."
    execute sudo systemctl enable solr
}

# Install Transform dependencies
08_install_transform() {
    sudo subscription-manager repos --enable codeready-builder-for-rhel-8-$(arch)-rpms
    sudo dnf -y install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm

    echo "Install Transform dependencies"
    sudo dnf install -y GraphicsMagick libreoffice perl-Image-ExifTool

    echo "Downloading and installing Alfresco PDF Renderer..."
    execute curl -L -o /tmp/alfresco-pdf-renderer-1.2-linux.tgz https://nexus.alfresco.com/nexus/repository/releases/org/alfresco/alfresco-pdf-renderer/1.2/alfresco-pdf-renderer-1.2-linux.tgz
    execute sudo tar xf /tmp/alfresco-pdf-renderer-1.2-linux.tgz -C /usr/bin

    echo "Configuring Transform server..."
    execute mkdir /home/rheluser/transform
    execute cp downloads/alfresco-transform-core-aio-5.1.0.jar /home/rheluser/transform

    echo "Creating Transform systemd service file..."
    cat <<EOL | sudo tee /etc/systemd/system/transform.service
[Unit]
Description=Transform Application Container
After=network.target

[Service]
Type=simple

User=$TRANSFORM_USER
Group=$TRANSFORM_GROUP

Environment="JAVA_HOME=$JAVA_HOME"
Environment="LIBREOFFICE_HOME=/usr/lib/libreoffice"

ExecStart=java -jar /home/rheluser/transform/alfresco-transform-core-aio-5.1.0.jar
ExecStop=/bin/kill -15 $MAINPID

[Install]
WantedBy=multi-user.target
EOL

    echo "Reloading systemd daemon..."
    execute sudo systemctl daemon-reload

    echo "Starting Transform service..."
    execute sudo systemctl start transform

    echo "Stopping Transform service..."
    execute sudo systemctl stop transform

    echo "Enabling Transform service to start on boot..."
    execute sudo systemctl enable transform
}

# Install Node.js and build Alfresco Content App
09_install_nodejs() {
    echo "Installing Node.js and npm..."
    #execute curl -fsSL $NODEJS_SETUP_URL | sudo -E bash -
    bash $NODEJS_SETUP_UR
    execute sudo dnf install -y nodejs

    echo "Verifying Node.js and npm installation..."
    execute node -v
    execute npm -v

    echo "Cloning and building Alfresco Content App..."
    execute git clone $CONTENT_APP_REPO
    execute cd alfresco-content-app
    execute git checkout tags/$CONTENT_APP_VERSION -b $CONTENT_APP_VERSION
    execute npm install
    execute npm run build
}

# Install and configure Nginx
10_install_nginx() {
    echo "Installing Nginx..."
    execute sudo dnf install -y nginx

    echo "Creating directory for Alfresco Content App..."
    execute sudo mkdir -p $NGINX_ROOT
    execute sudo cp -r /home/rheluser/alfresco-content-app/dist/content-ce/* $NGINX_ROOT

    echo "Creating Nginx systemd service file..."
cat <<EOL | sudo tee /etc/systemd/system/nginx.service
[Unit]
Description=A high performance web server and a reverse proxy server
Documentation=man:nginx(8)
After=network.target remote-fs.target nss-lookup.target

[Service]
Type=forking
PIDFile=/run/nginx/nginx.pid
ExecStartPre=/usr/sbin/nginx -t -q -g 'daemon on; master_process on;'
ExecStart=/usr/sbin/nginx -g 'daemon on; master_process on;'
ExecReload=/usr/sbin/nginx -g 'daemon on; master_process on;' -s reload
ExecStop=/bin/kill -s QUIT $MAINPID
PrivateTmp=true

[Install]
WantedBy=multi-user.target
EOL

    echo "Reloading systemd daemon..."
    execute sudo systemctl daemon-reload

    echo "Enabling Nginx service to start on boot..."
    execute sudo systemctl enable nginx

    echo "Configuring Nginx..."
cat <<EOL | sudo tee $NGINX_CONF_PATH
server {
    listen 80;
    server_name localhost;

    client_max_body_size 0;

    set \$allowOriginSite *;
    proxy_pass_request_headers on;
    proxy_pass_header Set-Cookie;

    proxy_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504;
    proxy_redirect off;
    proxy_buffering off;
    proxy_set_header Host            \$host:\$server_port;
    proxy_set_header X-Real-IP       \$remote_addr;
    proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for;
    proxy_pass_header Set-Cookie;

    root $NGINX_ROOT;
    index index.html;

    location / {
        try_files \$uri \$uri/ /index.html;
    }

    location /alfresco/ {
        proxy_pass http://localhost:8080;
    }

    location /share/ {
        proxy_pass http://localhost:8080;
    }
}
EOL

    echo "Restarting Nginx..."
    execute sudo systemctl restart nginx
}
11_service_restart(){
    ## RECOMMENDATION: run this sequence of commands manually, waiting between one command and the next one to ensure service dependencies are met.

    echo "Starting postgresql"
    sudo systemctl start postgresql

    echo "Starting activemq"
    sudo systemctl start activemq

    echo "Starting transform"
    sudo systemctl start transform

    echo "Starting tomcat"
    sudo systemctl start tomcat

    echo "Starting solr"
    sudo systemctl start solr

    echo "Starting nginx"
    sudo systemctl start nginx


    echo "Services have been started successfully!"
}

# Main script execution
main() {
    user_add_and_group
    00_update_system
    01_install_postgresql
    02_install_java
    03_install_tomcat
    04_install_activemq
    05_down_content
    06_install_alfresco
    07_install_solr
    08_install_transform
    09_install_nodejs
    10_install_nginx
    11_servie_restart
    echo "Installation and configuration complete."
}

main