# Basic rule to detect robots

def hook(hits):
    for k in hits.keys():
        super_hit = hits[k]

        if super_hit['robot']: continue

        isRobot = False
        referers = 0

# 1) no pages view --> robot
        # if not super_hit['viewed_pages']:
        #     super_hit['robot'] = 1
        #     continue

# 2) pages without hit --> robot
        if not super_hit['viewed_hits']:
            super_hit['robot'] = 1
            continue

        for hit in super_hit['pages']:
# 3) /robots.txt read
            if hit['extract_request']['http_uri'] == '/robots.txt':
                isRobot = True
                break

# 4) Any referer for hits
            if not hit['is_page'] and hit['http_referer']:
                referers += 1

        if isRobot:
            super_hit['robot'] = 1
            continue

        if super_hit['viewed_hits'] and not referers:
            super_hit['robot'] = 1
            continue