from google.oauth2.service_account import Credentials
from googleapiclient.discovery import build
SCOPES = ['https://www.googleapis.com/auth/spreadsheets.readonly']

def get_spreatsheed_service(credentials):
    return build('sheets', 'v4', credentials=credentials, cache_discovery=False)

def get_google_creds():
    creds = None
    creds = Credentials.from_service_account_file('credentials.json', scopes=SCOPES)
    return creds

def process_spreadsheet_data(rows):
    processed_data = []
    for row in rows:
        processed_row = convert_spreadsheet_data(row)
        processed_data.append(processed_row) if processed_row else None
    return processed_data
from datetime import datetime
from datetime import datetime

def convert_spreadsheet_data(data, default_year=None):
    if not data.get('day') or not data['day'].isdigit():
        return None
    result = {}
    result['day'] = int(data['day'])
    if default_year is None:
        default_year = datetime.now().year
    date_str = data.get('date', '').strip()
    parsed_date = None
    if date_str:
        try:
            parsed_date = datetime.strptime(f'{date_str} {default_year}', '%b %d %Y')
        except ValueError:
            try:
                parsed_date = datetime.strptime(f'{date_str} {default_year}', '%B %d %Y')
            except:
                parsed_date = None
    if parsed_date and parsed_date.month == 1 and ('Dec' in data.get('date', '')):
        parsed_date = parsed_date.replace(year=default_year + 1)
    result['date'] = parsed_date

    def parse_percent(value):
        if not value:
            return 0.0
        v = value.strip().replace(',', '.').replace('%', '')
        try:
            return float(v) / 100.0
        except:
            return 0.0
    result['plan'] = parse_percent(data.get('plan', '0'))
    result['actual'] = parse_percent(data.get('actual', '0'))
    result['gap'] = result['actual'] - result['plan']
    return result

def fetch_all_sections(service, spreadsheet_id, sheet_name):
    result = service.spreadsheets().values().get(spreadsheetId=spreadsheet_id, range=f'{sheet_name}!A5:M5000').execute()
    values = result.get('values', [])
    if not values:
        raise ValueError('No data found in sheet')
    data = []
    current_section = None
    current_subsystem = None
    for row in values:
        row += [''] * (13 - len(row))
        colA, colB, colC, colD, colE, colF, colG, colH, colI, colJ, colK, colL, colM = row
        if colC and (not colD) and (not colE):
            current_section = colC.strip()
            current_subsystem = None
            continue
        if colD and (not colE):
            current_subsystem = colD.strip()
            continue
        if colE:
            task = colE.strip()
            pic = colF.strip()
            start_date = indo_formatted_date(colG.strip())
            finish_date = indo_formatted_date(colH.strip())
            duration = colI.strip()
            plan = colK.strip()
            actual = colL.strip()
            gap = colM.strip()
            data.append({'system': current_section, 'subsystem': current_subsystem, 'task': task, 'PIC': pic, 'start_date': start_date, 'end_date': finish_date, 'duration': int(duration), 'plan': plan, 'actual': actual, 'gap': gap})
    return data

def indo_formatted_date(date_str, base_year=2025):
    eng_to_indo_month = {'Jan': 'Januari', 'Feb': 'Februari', 'Mar': 'Maret', 'Apr': 'April', 'May': 'Mei', 'Jun': 'Juni', 'Jul': 'Juli', 'Aug': 'Agustus', 'Sep': 'September', 'Oct': 'Oktober', 'Nov': 'November', 'Dec': 'Desember'}
    indo_days = {0: 'Senin', 1: 'Selasa', 2: 'Rabu', 3: 'Kamis', 4: 'Jumat', 5: 'Sabtu', 6: 'Minggu'}
    if '-' in date_str:
        d, m = date_str.split('-')
        date_str = f'{m} {d}'
    try:
        dt = datetime.strptime(f'{date_str} {base_year}', '%b %d %Y')
    except:
        return None
    if dt.month == 1:
        dt = dt.replace(year=base_year + 1)
    day_name = indo_days[dt.weekday()]
    month_name = eng_to_indo_month[dt.strftime('%b')]
    return f'{day_name}, {month_name} {dt.day}, {dt.year}'