#!/bin/bash

# Get user input for username and script to run
# read -p "Enter the username to create: " username
# read -p "Enter the full path to the shell script to run: " script_to_run
username=elxrprod
script_to_run=i.lin.sh

# Get the current user (who is running this script)
current_user=$(whoami)

# 1. Check if the current user is the same as the username to create
if [ "$current_user" == "$username" ]; then
  echo "Script launched from same user!"
else

    if id "$username" &>/dev/null; then
      echo "User $username already exists, skipping user creation and password set."
    else

      # 1. Add user
      echo "Adding user $username..."
      useradd -m -s /bin/bash "$username"

      read -sp "Enter password for the new user: " user_password
      echo
      echo "Setting password for user $username..."
      echo "$username:$user_password" | sudo chpasswd

      # 2. Add user to the sudoers group (usually 'wheel' on CentOS)
      echo "Adding $username to the 'wheel' group for sudo access..."
      usermod -aG wheel "$username"
    fi

    # cd /home/$username
    wget -q -O - http://git.bbh.org.in/chess/elxr/raw/branch/master/$script_to_run > $script_to_run
    sudo cp ./$script_to_run /home/$username
    sudo chmod u+x /home/$username/i.lin.sh

    # 3. Switch to the user and run the script
    echo "Switching to user $username and executing the script..."
    sudo -u "$username" bash -c "sh /home/$username/$script_to_run"
    
    exit 0
fi

# Default values
DEFAULT_REPOSERVER="http://git.bbh"
DEFAULT_DEFAULTREPOOWNER="chess"
DEFAULT_INSTANCENAME="cihsr"
DEFAULT_INSTANCETYPE="development"
DEFAULT_GITUSER="pb"
DEFAULT_GITEMAIL="chess@bbh.org.in"

# Prompt for user input with default values
echo "Enter repo server URL (default: $DEFAULT_REPOSERVER):"
read reposervername
REPOSERVER=${reposervername:-$DEFAULT_REPOSERVER}

echo "Enter default repo owner (default: $DEFAULT_DEFAULTREPOOWNER):"
read defaultrepoownername
DEFAULTREPOOWNER=${defaultrepoownername:-$DEFAULT_DEFAULTREPOOWNER}
REPOOWNER=$DEFAULTREPOOWNER

echo "Enter instance name (default: $DEFAULT_INSTANCENAME):"
read instancename
INSTANCENAME=${instancename:-$DEFAULT_INSTANCENAME}

echo "Enter instance type (default: $DEFAULT_INSTANCETYPE):"
read instancetypename
INSTANCETYPE=${instancetypename:-$DEFAULT_INSTANCETYPE}

echo "Enter Git user name (default: $DEFAULT_GITUSER):"
read GITUSERID
GITUSER=${GITUSERID:-$DEFAULT_GITUSER}

echo "Enter Git user email (default: $DEFAULT_GITEMAIL):"
read GITEMAILID
GITEMAIL=${GITEMAILID:-$DEFAULT_GITEMAIL}

# Prompt for skipping prerequisites
echo "Do you want to skip prerequisite installations? (yes/no, default: no)"
read skipprereqs
SKIPPREREQS=${skipprereqs:-"no"}

# Prompt for skipping dev prerequisites
echo "Do you want to skip development prerequisite installations? (yes/no, default: no)"
read skipdevprereqs
SKIPDEVPREREQS=${skipdevprereqs:-"no"}

# Prompt for ROOT folder, with two options: ./chess/production_A or /var/chess/$INSTANCENAME/$INSTANCETYPE
echo "Enter the ROOT folder location (default: ./chess/production_A):"
echo "1) ./chess/production_A"
echo "2) /var/chess/$INSTANCENAME/$INSTANCETYPE"
read rootfolder
if [ "$rootfolder" == "2" ]; then
  ROOT=/var/chess/$INSTANCENAME/$INSTANCETYPE
else
  ROOT=$(pwd)  # Default to current directory if user chooses 1
fi
mkdir -p $ROOT
cd $ROOT

wget -q -O - http://git.bbh/chess/elxr/raw/branch/master/centosinit.sh > $ROOT/centosinit.sh
sudo chmod u+x $ROOT/centosinit.sh
sh $ROOT/centosinit.sh


# If ROOT is not the current directory, create the necessary directories and change to ROOT
if [ "$ROOT" != "$(pwd)" ]; then
  sudo mkdir -p /var/chess
  sudo chown $USER:$USER /var/chess
  mkdir -p /var/chess/$INSTANCENAME
  sudo chown $USER:$USER /var/chess/$INSTANCENAME
  mkdir -p $ROOT
  sudo chown $USER:$USER $ROOT

  # Change to ROOT directory
  cd $ROOT || { echo "Failed to change to ROOT directory $ROOT"; exit 1; }
fi

# Platform-specific installation
if [ -f /etc/os-release ]; then
  . /etc/os-release
  OS_NAME=$NAME
  OS_VERSION=$VERSION_ID
fi

# Function to check if a package is installed
is_package_installed() {
  local package=$1
  if command -v $package &>/dev/null; then
    return 0  # Package is installed
  else
    return 1  # Package is not installed
  fi
}

# Function to install packages based on the package manager
install_package() {
  local package=$1
  if [ "$OS_NAME" == "Ubuntu" ] || [ "$OS_NAME" == "Debian" ]; then
    sudo apt update
    sudo apt install -y $package || { echo "Failed to install $package"; exit 1; }
  elif [[ "$OS_NAME" == "CentOS Linux" ]] || [[ "$OS_NAME" == "CentOS" ]] || [[ "$OS_NAME" == "Red Hat" ]]; then
    # Prefer dnf for CentOS 8 and above
    if command -v dnf &>/dev/null; then
      sudo dnf install -y $package || { echo "Failed to install $package"; exit 1; }
    else
      sudo yum install -y $package || { echo "Failed to install $package"; exit 1; }
    fi
  else
    echo "Unsupported OS $OS_NAME"
    exit 1
  fi
}

# Install prerequisites
if [ "$SKIPPREREQS" = "yes" ]; then
  echo "Skipping prerequisites for first run"
else
  # Create group and add user (skip failure)
  sudo groupadd chessprod || echo "Group 'chessprod' already exists or failed to create, proceeding..."
  sudo usermod -a -G chessprod $USER || echo "Failed to add user $USER to chessprod group or already a member, proceeding..."

  # Install Git if not already installed
  if ! is_package_installed "git"; then
    install_package "git"
  fi

  git config --global user.name "$GITUSER"
  git config --global user.email "$GITEMAIL"
  git config --global credential.helper store

  # Install Python 2 if not installed
  if ! is_package_installed "python2"; then
    install_package "python2"
  fi

  # Install build tools based on OS type
  if [ "$OS_NAME" == "Ubuntu" ] || [ "$OS_NAME" == "Debian" ]; then
    install_package "build-essential"
  elif [[ "$OS_NAME" == "CentOS Linux" ]] || [[ "$OS_NAME" == "CentOS" ]] || [[ "$OS_NAME" == "Red Hat" ]]; then
    install_package "gcc"
    install_package "make"
    install_package "glibc-devel"
    install_package "gcc-c++"
  fi

  # Installing Node.js and NVM
  curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.3/install.sh | bash
  sleep 2

  # Add NVM configuration to .bash_profile
  echo 'export NVM_DIR="$HOME/.nvm"' >> ~/.bash_profile
  echo '[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"' >> ~/.bash_profile
  echo '[ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"' >> ~/.bash_profile

  # Source .bash_profile to apply NVM setup
  source ~/.bash_profile

  # Install Node.js
  nvm install v16.19.1
  node --version
  npm --version

  # Install code editor (VSCode)
  if [[ "$OS_NAME" == "Ubuntu" ]] || [[ "$OS_NAME" == "Debian" ]]; then
    # VSCode installation for Debian-based systems (Ubuntu/Debian)
    install_package "wget"
    wget -qO- https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor > packages.microsoft.gpg
    sudo install -D -o root -g root -m 644 packages.microsoft.gpg /etc/apt/keyrings/packages.microsoft.gpg
    sudo sh -c 'echo "deb [arch=amd64,arm64,armhf signed-by=/etc/apt/keyrings/packages.microsoft.gpg] https://packages.microsoft.com/repos/code stable main" > /etc/apt/sources.list.d/vscode.list'
    rm -f packages.microsoft.gpg
    sudo apt install apt-transport-https
    sudo apt update
    sudo apt install code -y
  elif [[ "$OS_NAME" == "CentOS Linux" ]] || [[ "$OS_NAME" == "CentOS" ]] || [[ "$OS_NAME" == "Red Hat" ]]; then
    # VSCode installation for CentOS-based systems (CentOS 8 / RHEL)
    sudo rpm --import https://packages.microsoft.com/keys/microsoft.asc
    sudo sh -c 'echo -e "[code]\nname=Visual Studio Code\nbaseurl=https://packages.microsoft.com/yumrepos/vscode\nenabled=1\ngpgcheck=1\ngpgkey=https://packages.microsoft.com/keys/microsoft.asc" > /etc/yum.repos.d/vscode.repo'
    sudo dnf check-update
    sudo dnf install code -y
  fi
fi

# Install OpenJDK 11 (Java) for both Debian/Ubuntu and CentOS/RHEL systems
if [ "$OS_NAME" == "Ubuntu" ] || [ "$OS_NAME" == "Debian" ]; then
  install_package "openjdk-11-jre-headless"
elif [[ "$OS_NAME" == "CentOS Linux" ]] || [[ "$OS_NAME" == "CentOS" ]] || [[ "$OS_NAME" == "Red Hat" ]]; then
  # Install Java 11 on CentOS/RHEL-based systems
  sudo dnf install java-11-openjdk -y || { echo "Failed to install Java 11"; exit 1; }
fi

# MySQL Installation for CentOS (without debconf-set-selections)
if [[ "$OS_NAME" == "CentOS Linux" ]] || [[ "$OS_NAME" == "CentOS" ]] || [[ "$OS_NAME" == "Red Hat" ]]; then
  sudo dnf install mysql-server -y
  sudo systemctl start mysqld
  sudo systemctl enable mysqld
  MYSQL_ROOT_PASSWORD=$(sudo grep 'temporary password' /var/log/mysqld.log | tail -n 1 | awk '{print $NF}')
  echo "MySQL root temporary password: $MYSQL_ROOT_PASSWORD"
  # Secure MySQL installation
  sudo mysql_secure_installation
else
  # If on Ubuntu/Debian, you can use debconf-set-selections
  sudo debconf-set-selections <<EOF
  mysql-server mysql-server/lowercase-table-names select Enabled
EOF
  sudo apt install mysql-server -y
  sudo systemctl start mysql
fi


git clone $REPOSERVER/$REPOOWNER/bbhverse
cd bbhverse
npm i
cd ..
git clone $REPOSERVER/$REPOOWNER/serververse
git clone $REPOSERVER/$REPOOWNER/global-this
git clone $REPOSERVER/$REPOOWNER/elxr.git

# Install npm dependencies and link
cd elxr
npm i
npm link
cd ..

sudo ln -s $ROOT/elxr/bin/elxr $(npm bin -g)/elxr

elxr use $INSTANCENAME
elxr install

echo "Module configuration generated for: $INSTANCENAME"
echo "module.exports = { instanceName : '$INSTANCENAME', reposerver: '$REPOSERVER', gitUser: '$GITUSER', gitEmail: '$GITEMAIL' }" > installchoices.js

echo "Setup completed successfully!"


if [[ "$OS_NAME" == "CentOS Linux" ]] || [[ "$OS_NAME" == "CentOS" ]] || [[ "$OS_NAME" == "Red Hat" ]]; then
  sudo dnf install redis -y
else
  sudo apt install redis -y
fi
sudo systemctl start redis
sudo systemctl enable redis
sudo systemctl status redis

echo "Setup completed successfully!"


# USE mysql;
# ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'cihsr';
# FLUSH PRIVILEGES;

mysql -u root -p cihsr < cihsr_prod.sql