scan-website.sh

website_url=$1
scan_text=$2
max_attempts=$3
backoff_multiplier=$4
json_checks=$5

for (( i=1; i<=$max_attempts; i++ )); do
    sleep_duration=$(($i * $backoff_multiplier))

    body=$(curl --silent --location --fail "${website_url}")
    if [ $? -ne 0 ]; then
        echo "Website is unreachable" >&2
        sleep $sleep_duration
        continue
    fi

    failed=false

    if [ -n "${scan_text}" ]; then
        if ! echo "$body" | grep --quiet --ignore-case "${scan_text}"; then
            echo "Text '${scan_text}' was not found on website" >&2
            failed=true
        fi
    fi

    if [ -n "${json_checks}" ]; then
        while IFS= read -r check; do
            [ -z "$check" ] && continue
            key="${check%%=*}"
            expected="${check#*=}"
            actual=$(echo "$body" | jq -r ".${key}")
            if [ "$actual" != "$expected" ]; then
                echo "Check failed: ${key} expected '${expected}', got '${actual}'" >&2
                failed=true
            fi
        done <<< "$json_checks"
    fi

    if [ "$failed" = false ]; then
        exit 0
    fi

    sleep $sleep_duration
done

exit 1