from odoo import api, models, _, fields
from odoo.exceptions import ValidationError
from odoo.tools.misc import format_date
from datetime import datetime

class HRLeave(models.Model):
    _inherit = "hr.leave"

    def flutter_check_overlap_constrain(self,employee_id, to_date, from_date):
        if self.env.context.get('leave_skip_date_check', False):
            return
        date_from = datetime.fromisoformat(from_date).replace(hour=0, minute=0, second=0)
        date_to = datetime.fromisoformat(to_date).replace(hour=23, minute=59, second=59)
        employee_id = int(employee_id)
        all_leaves = self.search([
            ('date_from', '<', date_to),
            ('date_to', '>', date_from),
            ('employee_id', 'in', [employee_id]),
            ('state', 'not in', ['cancel', 'refuse']),
        ])
        domain = [
            ('employee_id', '=', employee_id),
            ('date_from', '<', date_to),
            ('date_to', '>', date_from),
            ('state', 'not in', ['cancel', 'refuse']),
        ]
        conflicting_holidays = all_leaves.filtered_domain(domain)

        if conflicting_holidays:
            conflicting_holidays_list = []
            # Do not display the name of the employee if the conflicting holidays have an employee_id.user_id equivalent to the user id
            holidays_only_have_uid = bool(employee_id)
            holiday_states = dict(conflicting_holidays.fields_get(allfields=['state'])['state']['selection'])
            for conflicting_holiday in conflicting_holidays:
                conflicting_holiday_data = {}
                conflicting_holiday_data['employee_name'] = conflicting_holiday.employee_id.name
                conflicting_holiday_data['date_from'] = format_date(self.env,
                                                                    min(conflicting_holiday.mapped('date_from')))
                conflicting_holiday_data['date_to'] = format_date(self.env,
                                                                  min(conflicting_holiday.mapped('date_to')))
                conflicting_holiday_data['state'] = holiday_states[conflicting_holiday.state]
                if conflicting_holiday.employee_id.user_id.id != self.env.uid:
                    holidays_only_have_uid = False
                if conflicting_holiday_data not in conflicting_holidays_list:
                    conflicting_holidays_list.append(conflicting_holiday_data)
            if not conflicting_holidays_list:
                return
            conflicting_holidays_strings = []
            if holidays_only_have_uid:
                for conflicting_holiday_data in conflicting_holidays_list:
                    conflicting_holidays_string = _('from %(date_from)s to %(date_to)s - %(state)s',
                                                    date_from=conflicting_holiday_data['date_from'],
                                                    date_to=conflicting_holiday_data['date_to'],
                                                    state=conflicting_holiday_data['state'])
                    conflicting_holidays_strings.append(conflicting_holidays_string)
                error = """\
You've already booked time off which overlaps with this period:
%s
Attempting to double-book your time off won't magically make your vacation 2x better!
""".join(conflicting_holidays_strings)
                return error
            for conflicting_holiday_data in conflicting_holidays_list:
                conflicting_holidays_string = "\n" + _(
                    '%(employee_name)s - from %(date_from)s to %(date_to)s - %(state)s',
                    employee_name=conflicting_holiday_data['employee_name'],
                    date_from=conflicting_holiday_data['date_from'],
                    date_to=conflicting_holiday_data['date_to'],
                    state=conflicting_holiday_data['state'])
                conflicting_holidays_strings.append(conflicting_holidays_string)
            error = "An employee already booked time off which overlaps with this period:%s","".join(conflicting_holidays_strings)
            return error

    @api.model
    def calculate_leave_duration(self, date_from, date_to, employee_id):
        """
        Calculate the number of days and hours for the given date range and employee.
        """
        employee = self.env['hr.employee'].browse(employee_id)
        if not employee:
            return {'error': 'Employee not found'}

        from_date = datetime.fromisoformat(date_from).replace(hour=0, minute=0, second=0)
        to_date = datetime.fromisoformat(date_to).replace(hour=23, minute=59, second=59)

        # Define a fake leave record to use _get_durations
        leave_values = {
            'employee_id': employee.id,
            'date_from': fields.Datetime.from_string(from_date),
            'date_to': fields.Datetime.from_string(to_date),
            'holiday_status_id': self.env['hr.leave.type'].search([], limit=1).id,
            # Replace with appropriate leave type ID
            'resource_calendar_id': employee.resource_calendar_id.id,
        }
        leave = self.new(leave_values)
        durations = leave._get_durations()
        leave_id = list(durations.keys())[0]
        days, hours = durations[leave_id]

        return {
            'days': float(days),
            'hours': float(hours),
        }

    @api.model
    def submit_leave_flutter_odoo(self,leave_request_data):
        print(leave_request_data)
        pass