#!/usr/bin/env bash
set -euo pipefail

if [[ ! -f .env ]]; then
  echo "Warning: .env file not found. Exiting without running Docker steps."
  exit 0
fi

cpuCount=$(nproc)
if (( cpuCount < 4 )); then
  echo "Error: Insufficient CPU cores: $cpuCount detected. Minimum 4 required." >&2
  exit 1
fi

mem_kb=$(awk '/MemTotal:/ {print $2}' /proc/meminfo)
totalMemGB=$(awk "BEGIN {printf \"%.2f\", $mem_kb/1024/1024}")
if (( mem_kb < 6*1024*1024 )); then
  echo "Error: Insufficient RAM: ${totalMemGB} GB detected. Minimum 6 GB required." >&2
  exit 1
fi

avail_kb=$(df --output=avail . | tail -n1)
freeGB=$(awk "BEGIN {printf \"%.2f\", $avail_kb/1024/1024}")
if (( avail_kb < 20*1024*1024 )); then
  echo "Error: Insufficient free disk space: ${freeGB} GB available. Minimum 20 GB required." >&2
  exit 1
fi

echo "System requirements met: CPU cores=${cpuCount}, RAM=${totalMemGB}GB, FreeDisk=${freeGB}GB"

echo "Pulling related images..."
docker compose pull

echo "Building the project's images..."
docker compose build