import json, re, pathlib, unicodedata, itertools

# helper regexes
AR = re.compile(r'[\u0600-\u06FF]')                          # Arabic block
EMOJI = re.compile('['
    '\U0001F600-\U0001F64F'  # emoticons
    '\U0001F300-\U0001F5FF'  # symbols & pictographs
    '\U0001F680-\U0001F6FF'  # transport & map symbols
    '\U0001F1E0-\U0001F1FF'  # flags
']', flags=re.UNICODE)

def is_flagged(txt):
    if EMOJI.search(txt) or any(c in '@#' for c in txt):
        return True
    non_ar = sum(1 for c in txt if not AR.match(c))
    return len(txt) and non_ar / len(txt) >= 0.8

files = ['train.jsonl', 'validation.jsonl', 'test.jsonl']
tot = flagged = 0
examples = []

for fn in files:
    for row in map(json.loads, pathlib.Path(fn).read_text().splitlines()):
        for sp in row['spans']:
            txt = sp.get('text') or row['text'][sp['start']:sp['end']]
            tot += 1
            if is_flagged(txt):
                flagged += 1
                if len(examples) < 2000:
                    examples.append(txt)

print(f"{flagged}/{tot} spans flagged ({flagged/tot:.2%})")
print("sample:", examples)