#!/bin/bash
set -e

BASE_URL="${BASE_URL:?BASE_URL env not set}"
FILE_LIST="${FILE_LIST:?FILE_LIST env not set}"
CRON_EXPR="${CRON_EXPR:-0 */12 * * *}"
USER_AGENT="${USER_AGENT:-Mozilla/5.0}"
ACCEPT_ENCODING="${ACCEPT_ENCODING:-br,gzip}"

echo "$(date) - Starting cache warmer for $BASE_URL$FILE_LIST"
echo "Cron schedule: $CRON_EXPR"

cat << EOF > /app/warm_files.sh
#!/bin/sh
set -e

BASE_URL="$BASE_URL"
FILE_LIST="$FILE_LIST"
USER_AGENT="$USER_AGENT"
ACCEPT_ENCODING="$ACCEPT_ENCODING"

echo "\$(date) - Fetching file list from \$BASE_URL\$FILE_LIST"

# WAŻNE: --compressed automatycznie dekompresuje odpowiedź
FILES=\$(curl -s --compressed -A "\$USER_AGENT" "\$BASE_URL\$FILE_LIST")

if [ -z "\$FILES" ]; then
  echo "\$(date) - File list empty"
  exit 1
fi

echo "\$FILES" | while read -r url; do
  if [ -n "\$url" ]; then
    echo "\$(date) - Warming \$BASE_URL/\$url"
    curl -s -o /dev/null -A "\$USER_AGENT" -H "Accept-Encoding: \$ACCEPT_ENCODING" "\$BASE_URL/\$url"
  fi
done

echo "\$(date) - Warming completed"
EOF

chmod +x /app/warm_files.sh
touch /var/log/cron.log

echo "$(date) - Running initial warming..."
/app/warm_files.sh

echo "$CRON_EXPR /app/warm_files.sh >> /var/log/cron.log 2>&1" > /etc/crontabs/root

echo "$(date) - Starting crond..."
crond -f -l 2 &
tail -f /var/log/cron.log