bash script to help out starting server

runapp.sh

@@ -0,0 +1,173 @@
+#!/bin/bash
+
+install_nginx_if_not_installed() {
+    # Check if Nginx is installed by checking the exit status of dpkg-query
+    if ! dpkg -l | grep -qw nginx; then
+        echo "Nginx is not installed. Installing Nginx."
+
+        # Update package lists
+        sudo apt-get update
+
+        # Install Nginx
+        sudo apt-get install -y nginx
+
+        # Check if Nginx service is running
+        if sudo systemctl status nginx | grep -qw "active (running)"; then
+            echo "Nginx has been installed and is running."
+        else
+            echo "Nginx has been installed but is not running. Starting Nginx."
+            sudo systemctl start nginx
+        fi
+    else
+        echo "Nginx is already installed."
+    fi
+}
+
+install_nvm() {
+    # NVM's loading script is usually in the home directory, or XDG_CONFIG_HOME if set.
+    NVM_DIR="${XDG_CONFIG_HOME:-$HOME}/.nvm"
+
+    # Check if the NVM directory exists
+    if [ -d "$NVM_DIR" ]; then
+        echo "NVM directory found. Assuming NVM is installed."
+        # Source the NVM script to make it available in the current session
+        [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
+        [ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"
+    else
+        echo "NVM is not installed. Installing NVM."
+        # Install NVM. Be sure to check the latest version from the official repository.
+        curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.1/install.sh | bash
+
+        # Source the NVM script to make it available in the current session
+        export NVM_DIR="$HOME/.nvm"
+        [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
+        [ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"
+    fi
+}
+
+
+install_node_version_20() {
+    # Ensure NVM is installed
+    install_nvm
+
+    # Check if the specific version of Node is installed
+    if ! nvm list 20 &> /dev/null; then
+        echo "Node version 20 is not installed. Installing Node version 20."
+
+        # Install Node version 20
+        nvm install 20
+
+        # Use the installed version
+        nvm use 20
+    else
+        echo "Node version 20 is already installed."
+    fi
+}
+
+setup_nginx_files() {
+    # Define the source and target directories
+    SOURCE_DIR="app/dist"
+    TARGET_DIR="/var/www/html"
+    NGINX_CONF="config/nginx.config" # Replace this with the path to your nginx.config if it's not in the current directory
+    NGINX_CONF_DIR="/etc/nginx/sites-available"
+    NGINX_CONF_ENABLED_DIR="/etc/nginx/sites-enabled"
+
+    # Check if SOURCE_DIR exists
+    if [ ! -d "$SOURCE_DIR" ]; then
+        echo "The source directory '$SOURCE_DIR' does not exist. Cannot copy files."
+        return 1
+    fi
+
+    # Check if NGINX_CONF exists
+    if [ ! -f "$NGINX_CONF" ]; then
+        echo "The Nginx configuration file '$NGINX_CONF' does not exist. Cannot copy file."
+        return 1
+    fi
+
+    # Copy the SPA distribution files to the target directory
+    echo "Copying files from $SOURCE_DIR to $TARGET_DIR..."
+    sudo cp -R "$SOURCE_DIR"/* "$TARGET_DIR"
+
+    # Backup the original default configuration if it exists
+    if [ -f "$NGINX_CONF_DIR/default" ]; then
+        echo "Backing up the original default Nginx configuration..."
+        sudo mv "$NGINX_CONF_DIR/default" "$NGINX_CONF_DIR/default.backup"
+    fi
+
+    # Copy the custom Nginx configuration file to the sites-available directory
+    echo "Copying Nginx configuration to $NGINX_CONF_DIR..."
+    sudo cp "$NGINX_CONF" "$NGINX_CONF_DIR/default"
+
+    # Create a symlink in sites-enabled to enable the configuration if it doesn't already exist
+    if [ ! -f "$NGINX_CONF_ENABLED_DIR/default" ]; then
+        echo "Creating symlink for Nginx configuration in $NGINX_CONF_ENABLED_DIR..."
+        sudo ln -s "$NGINX_CONF_DIR/default" "$NGINX_CONF_ENABLED_DIR/default"
+    fi
+
+    # Test the configuration
+    echo "Testing Nginx configuration..."
+    sudo nginx -t
+
+    # Restart Nginx to apply the changes
+    echo "Restarting Nginx..."
+    sudo systemctl restart nginx
+
+    echo "Nginx has been setup with the new configuration and files."
+}
+
+run_npm_install_and_build() {
+    # Save the current directory
+    local CURRENT_DIR=$(pwd)
+
+    # Define the app directory
+    local APP_DIR="app"
+
+    # Check if APP_DIR exists
+    if [ ! -d "$APP_DIR" ]; then
+        echo "The application directory '$APP_DIR' does not exist. Cannot run 'npm install' or 'npm run build'."
+        return 1
+    fi
+
+    # Change to the app directory
+    cd "$APP_DIR"
+
+    # Install dependencies
+    echo "Installing dependencies in the $APP_DIR directory..."
+    if npm install; then
+        echo "Dependencies installed successfully."
+    else
+        echo "Failed to install dependencies."
+        # Change back to the original directory before returning
+        cd "$CURRENT_DIR"
+        return 1
+    fi
+
+    # Run npm build
+    echo "Running 'npm run build' in the $APP_DIR directory..."
+    if npm run build; then
+        echo "'npm run build' ran successfully."
+    else
+        echo "Failed to run 'npm run build'."
+        # Change back to the original directory before returning
+        cd "$CURRENT_DIR"
+        return 1
+    fi
+
+    # Change back to the original directory
+    cd "$CURRENT_DIR"
+    echo "Build process completed and returned to the original directory."
+}
+
+
+
+# Make sure everything is installed
+install_node_version_20
+install_nginx_if_not_installed
+
+# Build our files.
+run_npm_install_and_build
+
+
+# Update the files to the correct locations
+setup_nginx_files
+