#!/bin/bash
# Script: Installing Base sys and CLI Dev Toolkit
# Description: Performs various system operations and logs the results
# Author: Hector Agosto 2024
# Version: 0.0.1b5
# License under Apache 2

# Check for required commands
for cmd in jq curl; do
    command -v "$cmd" &> /dev/null || { echo "Error: $cmd is missing. Please install it."; exit 1; }
done

# Configuration
log_file="script_execution_$(date +%Y%m%d_%H%M%S).log"
step_definitions=(
  '{ "step": "Fetching system kernel info", "command": "uname -a", "description": "Retrieves the current system kernel information" }'
  '{ "step": "Updating package lists", "command": "sudo apt update", "description": "Updates the list of available software packages" }'
  '{ "step": "Upgrading packages", "command": "sudo apt upgrade -y", "description": "Upgrading installed software packages to the latest versions" }'
  '{ "step": "Downloading remote file", "command": "curl -f https://example.com/remote-file -o remote-file.txt", "description": "Downloads a file from a given URL and saves it locally" }'
  '{ "step": "Reading log file", "command": "cat info.log", "description": "Reads and displays the contents of a specified log file" }'
)

# Utility functions
print_color() { echo -e "\033[${1}m${2}\033[0m"; }
clear_lines() { for ((i=0; i<$1; i++)); do tput cuu1; tput el; done; }

# Logging function
log() {
  local step="$1"
  local command="$2"
  local status="$3"
  local details="$4"
  echo "$(date '+%Y-%m-%d %H:%M:%S')  | $step | $command | $status ${details:+| $details}" >> /tmp/"$log_file"
}

# Initialize log file
{
  echo "Script Execution Log"
  echo "===================="
  echo "Date: $(date)"
  echo "User: $(whoami)"
  echo "Hostname: $(hostname)"
  echo "===================="
} > /tmp/"$log_file"

# Execute a single step
execute_step() {
  local step=$(echo "$1" | jq -r '.step')
  local command=$(echo "$1" | jq -r '.command')
  local description=$(echo "$1" | jq -r '.description')
  local temp_output=$(mktemp)
  local status
  
  echo -n "$step (${description})... "
  print_color 33 "[INFO]"

  if sh -c "$command" > "$temp_output" 2>&1; then
    echo; cat "$temp_output"; sleep 2
    clear_lines $(($(wc -l < "$temp_output") + 1))
    echo -n "$step... "
    print_color 32 "Success"
    status="Success"
  else
    echo; cat "$temp_output"
    print_color 31 "Failed"
    status="Failed"
    local retry
    read -p "Retry this step? (y/n): " retry
    if [[ "$retry" =~ ^[Yy]$ ]]; then
      execute_step "$1"
      status="Success" 
      return
    fi
  fi

  log "$step" "$command" "$status" "$(cat $temp_output)"
  rm "$temp_output"
}

# Main execution
for step in "${step_definitions[@]}"; do
  execute_step "$step"
   echo "----------------------------------------"
done

print_color 32 "\nAll done! Check the log: /tmp/$log_file\n"