#!/bin/bash

function prepare_log_file {
  local log_file="/logs/authenticated.csv"
  > "$log_file"
  mkdir -p $(dirname "$log_file")
  touch "$log_file"
}

function run_apache_bench_and_check_ttfb {
  local urls=(${URLS//,/ })
  local username=$USERNAME
  local password=$PASSWORD
  local requests=$REQUESTS
  local concurrency=$CONCURRENCY
  local log_file="/logs/authenticated.csv"
  local ab_summary
  local total_ttfb=0
  local ttfb=0
  
  echo "URL, Average TTFB, AB Mean Time per Request" | tee "$log_file"
  
  for url in "${urls[@]}"; do
    total_ttfb=0
    
    ab_summary=$(ab -n "$requests" -c "$concurrency" -A "$username:$password" "$url" 2>&1 | grep "Time per request" | head -1)
    ab_mean_time_per_request=$(echo "$ab_summary" | awk '{print $4 " " $5}')
    
    for i in {1..5}; do
      ttfb=$(curl -o /dev/null -s -w "%{time_starttransfer}\n" -u "$username:$password" "$url")
      total_ttfb=$(echo "$total_ttfb + $ttfb" | bc)
    done
    local mean_ttfb=$(echo "scale=3; $total_ttfb / 5" | bc)
    
    echo "$url, $mean_ttfb, $ab_mean_time_per_request" | tee -a "$log_file"
  done
}

prepare_log_file
run_apache_bench_and_check_ttfb