from csv import DictReader
from datetime import datetime

from weasyprint import HTML


# https://dokodu.it/zapisy/


class PdfReport:
    def __init__(self):
        self.rows = []

    def add_row(self, employee: str, hours:int, minutes:int):
        self.rows.append(
            f'<tr><td>{employee}</td><td>{hours} godzin {minutes} minut</td></tr>'
        )

    def save(self, filename: str):
        content = f'''<table>
            <thead>
                <tr>
                    <th>Pracownik</th>
                    <th>Czas pracy</th>
                </tr>
            </thead>
            <tbody>
                {''.join(self.rows)}
            </tbody>
        </table>'''

        html = HTML(string=content)
        html.write_pdf(filename)


def read_file(filename: str):
    employee_report = {}

    with open(filename, 'r', encoding='utf8') as file:
        reader = DictReader(file)
        for row in reader:
            start_date = datetime.strptime(row['Start Date'], '%Y-%m-%d %H:%M:%S')
            end_date = datetime.strptime(row['End Date'], '%Y-%m-%d %H:%M:%S')
            employee = row['Employee']
            customer = row['Client Name']
            time_delta = end_date - start_date

            if employee in employee_report:
                employee_report[employee] += time_delta
            else:
                employee_report[employee] = time_delta

    return employee_report


report = read_file('logs.txt')

for employee, duration in report.items():
    hours, remainder = divmod(duration.total_seconds(), 3600)
    minutes, _ = divmod(remainder, 60)
    # print('Czas pracy', employee, int(hours), 'godzin', int(minutes), 'minut')
    print(f'Pracownik: {employee}, Czas pracy: {hours} godzin i {minutes} minut.')

    # https://doc.courtbouillon.org/weasyprint/stable/first_steps.html