#!/bin/bash

# System Inspection Script
# Creates a detailed but sanitized report of system configuration

OUTPUT_DIR="system_inspection_$(date +%Y%m%d_%H%M%S)"
REPORT_FILE="$OUTPUT_DIR/system_report.txt"

# Create output directory
mkdir -p "$OUTPUT_DIR"

# Helper function for section headers
print_section() {
    echo -e "\n=== $1 ===" | tee -a "$REPORT_FILE"
}

# Helper function to safely execute commands
safe_exec() {
    local cmd="$1"
    local desc="$2"
    
    print_section "$desc"
    echo "$ $cmd" >> "$REPORT_FILE"
    if ! eval "$cmd" >> "$REPORT_FILE" 2>&1; then
        echo "Command failed or not available" >> "$REPORT_FILE"
    fi
}

# Start report
echo "System Inspection Report" > "$REPORT_FILE"
echo "Generated on: $(date)" >> "$REPORT_FILE"
echo "----------------------------------------" >> "$REPORT_FILE"

# Basic System Information
safe_exec "uname -a" "Kernel Information"
safe_exec "lsb_release -a" "OS Information"
safe_exec "cat /proc/cpuinfo | grep 'model name' | uniq" "CPU Model"
safe_exec "free -h" "Memory Information"
safe_exec "df -h" "Disk Usage"
safe_exec "uptime" "System Uptime"

# Network Configuration
print_section "Network Configuration"
safe_exec "ip addr | grep -v ether" "Network Interfaces"
safe_exec "netstat -tulpn | grep LISTEN" "Listening Ports"
safe_exec "cat /etc/hosts" "Hosts File"

# Installed Packages
print_section "Package Information"
safe_exec "dpkg -l | grep -E 'kubernetes|docker|containerd|kubelet|kubeadm|kubectl'" "Relevant Packages"

# Service Status
print_section "Service Status"
safe_exec "systemctl list-units --type=service --state=running" "Running Services"

# Docker Status (if installed)
print_section "Docker Status"
safe_exec "which docker && docker info" "Docker Information"
safe_exec "docker ps" "Running Containers"

# Kubernetes Status (if installed)
print_section "Kubernetes Status"
safe_exec "which kubectl && kubectl version" "Kubernetes Version"
safe_exec "kubectl get nodes" "Kubernetes Nodes"
safe_exec "kubectl get pods --all-namespaces" "Kubernetes Pods"
safe_exec "kubectl get services --all-namespaces" "Kubernetes Services"

# Security Configuration
print_section "Security Configuration"
safe_exec "ufw status" "Firewall Status"
safe_exec "systemctl status fail2ban" "Fail2ban Status"

# Process Information
print_section "Process Information"
safe_exec "ps aux | grep -E 'docker|kube|containerd'" "Relevant Processes"

# System Logs Overview
print_section "Recent System Events"
safe_exec "journalctl -n 50 --no-pager" "Last 50 System Log Entries"

# Resource Usage
print_section "Resource Usage"
safe_exec "top -b -n 1" "Current Resource Usage"

# Mounted Volumes
print_section "Mounted Volumes"
safe_exec "mount | grep -E 'ext4|xfs'" "Mounted Filesystems"

# Network Routes
print_section "Network Routes"
safe_exec "ip route" "IP Routes"

# Create a compressed archive of the report
tar -czf "$OUTPUT_DIR.tar.gz" "$OUTPUT_DIR"

echo "Inspection complete. Results are in $OUTPUT_DIR/"
echo "Compressed archive created: $OUTPUT_DIR.tar.gz"


Save it to a file (e.g., `inspect_system.sh`)
2. Make it executable: `chmod +x inspect_system.sh`
3. Run it: `sudo ./inspect_system.sh`

The script will:
- Create a detailed report of your system
- Organize information into clear sections
- Save everything to a timestamped directory
- Create a compressed archive for easy sharing