import json
import base64
import time
import urllib.request
import subprocess
import os

def base64url_encode(data):
    return base64.urlsafe_b64encode(data).decode('utf-8').replace('=', '')

def get_access_token():
    with open('/home/openclaw/.openclaw/workspace/google_service_account.json') as f:
        creds = json.load(f)
    private_key_str = creds['private_key']
    client_email = creds['client_email']
    token_uri = creds['token_uri']
    header = {"alg": "RS256", "typ": "JWT"}
    header_b64 = base64url_encode(json.dumps(header).encode())
    now = int(time.time())
    payload = {
        "iss": client_email,
        "scope": "https://www.googleapis.com/auth/documents",
        "aud": token_uri,
        "iat": now,
        "exp": now + 3600
    }
    payload_b64 = base64url_encode(json.dumps(payload).encode())
    content = f"{header_b64}.{payload_b64}"
    key_file = '/tmp/priv_pali_unbold.pem'
    with open(key_file, 'w') as f:
        f.write(private_key_str)
    try:
        process = subprocess.Popen(
            ['openssl', 'dgst', '-sha256', '-sign', key_file],
            stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE
        )
        signature, err = process.communicate(input=content.encode())
        if process.returncode != 0:
            raise Exception(f"OpenSSL error: {err.decode()}")
    finally:
        if os.path.exists(key_file):
            os.remove(key_file)
    signature_b64 = base64url_encode(signature)
    jwt = f"{content}.{signature_b64}"
    data = urllib.parse.urlencode({
        "grant_type": "urn:ietf:params:oauth:grant-type:jwt-bearer",
        "assertion": jwt
    }).encode()
    req = urllib.request.Request(token_uri, data=data)
    with urllib.request.urlopen(req) as f:
        res = json.loads(f.read().decode())
    return res['access_token']

def is_mixed_pali_vn(text):
    clean_text = text.strip().lower()
    if not clean_text:
        return False
    
    # Common Pali diacritics
    pali_chars = "āīūṭḍṇḷṃñ"
    has_pali = any(char in pali_chars for char in clean_text)
    
    # Common Vietnamese specific diacritics/chars
    vn_chars = "đáàảãạăắằẳẵặâấầẩẫậéèẻẽẹêếềểễệíìỉĩịóòỏõọôốồổỗộơớờởỡợúùủũụưứừửữựýỳỷỹỵ"
    has_vn_diacritics = any(char in vn_chars for char in clean_text)
    
    # Also check for common VN words as a fallback
    vn_common_words = {"là", "của", "và", "trong", "cho", "cũng", "được", "với", "như", "này", "một", "có"}
    words = set(clean_text.split())
    has_vn_words = any(word in words for word in vn_common_words)
    
    return has_pali and (has_vn_diacritics or has_vn_words)

def unbold_mixed():
    access_token = get_access_token()
    doc_id = "1Ymh60_Qe2yX6TgfznwOHwlphv8YMoz3SscJNg_HZtO0"
    
    get_uri = f"https://docs.googleapis.com/v1/documents/{doc_id}"
    req = urllib.request.Request(get_uri, headers={"Authorization": f"Bearer {access_token}"})
    with urllib.request.urlopen(req) as f:
        doc = json.loads(f.read().decode())
    
    content = doc.get('body', {}).get('content', [])
    requests = []
    
    for element in content:
        if 'paragraph' in element:
            para = element['paragraph']
            full_text = "".join([el.get('textRun', {}).get('content', '') for el in para.get('elements', [])])
            
            if is_mixed_pali_vn(full_text):
                requests.append({
                    "updateTextStyle": {
                        "range": {
                            "startIndex": element['startIndex'],
                            "endIndex": element['endIndex']
                        },
                        "textStyle": {
                            "bold": False
                        },
                        "fields": "bold"
                    }
                })

    if requests:
        update_uri = f"https://docs.googleapis.com/v1/documents/{doc_id}:batchUpdate"
        req = urllib.request.Request(
            update_uri, 
            data=json.dumps({"requests": requests}).encode(),
            headers={
                "Authorization": f"Bearer {access_token}",
                "Content-Type": "application/json"
            },
            method='POST'
        )
        with urllib.request.urlopen(req) as f:
            final_res = json.loads(f.read().decode())
        print(f"Unbolded {len(requests)} mixed Pali/Vietnamese paragraphs.")
    else:
        print("No mixed paragraphs found.")

if __name__ == "__main__":
    try:
        unbold_mixed()
    except Exception as e:
        print(f"Error: {e}")