# -*- coding: utf-8 -*-
# Part of Odoo. See LICENSE file for full copyright and licens

from odoo import http, fields, _
from odoo.http import request
from odoo.osv import expression

import pytz
from werkzeug.utils import redirect
import babel
from werkzeug.exceptions import Forbidden

from odoo import tools


class ShiftController(http.Controller):

    @http.route(['/planning/<string:planning_token>/<string:employee_token>'], type='http', auth="public", website=True)
    def planning(self, planning_token, employee_token, message=False, **kwargs):
        """ Displays an employee's calendar and the current list of open shifts """
        employee_sudo = request.env['hr.employee'].sudo().search([('employee_token', '=', employee_token)], limit=1)
        if not employee_sudo:
            return request.not_found()

        planning_sudo = request.env['planning.planning'].sudo().search([('access_token', '=', planning_token)], limit=1)
        if not planning_sudo:
            return request.not_found()

        employee_tz = pytz.timezone(employee_sudo.tz or 'UTC')
        employee_fullcalendar_data = []
        open_slots = []
        planning_slots = []

        # domain of slots to display
        domain = planning_sudo._get_domain_slots()[planning_sudo.id]
        if planning_sudo.include_unassigned:
            domain = expression.AND([domain, ['|', ('employee_id', '=', employee_sudo.id), ('employee_id', '=', False)]])
        else:
            domain = expression.AND([domain, [('employee_id', '=', employee_sudo.id)]])

        planning_slots = request.env['planning.slot'].sudo().search(domain)

        # filter and format slots
        for slot in planning_slots:
            if slot.employee_id:
                employee_fullcalendar_data.append({
                    'title': '%s%s' % (slot.role_id.name, u' \U0001F4AC' if slot.name else ''),
                    'start': str(pytz.utc.localize(slot.start_datetime).astimezone(employee_tz).replace(tzinfo=None)),
                    'end': str(pytz.utc.localize(slot.end_datetime).astimezone(employee_tz).replace(tzinfo=None)),
                    'color': self._format_planning_shifts(slot.role_id.color),
                    'alloc_hours': slot.allocated_hours,
                    'slot_id': slot.id,
                    'note': slot.name,
                    'allow_self_unassign': slot.allow_self_unassign
                })
            else:
                open_slots.append(slot)

        return request.render('planning.period_report_template', {
            'employee_slots_fullcalendar_data': employee_fullcalendar_data,
            'open_slots_ids': open_slots,
            'planning_slots_ids': planning_slots,
            'planning_planning_id': planning_sudo,
            'employee': employee_sudo,
            'format_datetime': lambda dt, dt_format: tools.format_datetime(request.env, dt, dt_format=dt_format),
            'message_slug': message,
        })

    @http.route('/planning/<string:token_planning>/<string:token_employee>/assign/<int:slot_id>', type="http", auth="public", methods=['post'], website=True)
    def planning_self_assign(self, token_planning, token_employee, slot_id, **kwargs):
        slot_sudo = request.env['planning.slot'].sudo().browse(slot_id)
        if not slot_sudo.exists():
            return request.not_found()

        if slot_sudo.employee_id:
            raise Forbidden(_('You can not assign yourself to this shift.'))

        employee_sudo = request.env['hr.employee'].sudo().search([('employee_token', '=', token_employee)], limit=1)
        if not employee_sudo:
            return request.not_found()

        planning_sudo = request.env['planning.planning'].sudo().search([('access_token', '=', token_planning)], limit=1)
        if not planning_sudo or slot_sudo.id not in planning_sudo.slot_ids._ids:
            return request.not_found()

        slot_sudo.write({'employee_id': employee_sudo.id})
        return redirect('/planning/%s/%s?message=%s' % (token_planning, token_employee, 'assign'))

    @http.route('/planning/<string:token_planning>/<string:token_employee>/unassign/<int:shift_id>', type="http", auth="public", methods=['post'], website=True)
    def planning_self_unassign(self, token_planning, token_employee, shift_id, **kwargs):
        slot_sudo = request.env['planning.slot'].sudo().search([('id', '=', shift_id)], limit=1)
        if not slot_sudo or not slot_sudo.allow_self_unassign:
            return request.not_found()

        employee_sudo = request.env['hr.employee'].sudo().search([('employee_token', '=', token_employee)], limit=1)
        if not employee_sudo or employee_sudo.id != slot_sudo.employee_id.id:
            return request.not_found()

        planning_sudo = request.env['planning.planning'].sudo().search([('access_token', '=', token_planning)], limit=1)
        if not planning_sudo or slot_sudo.id not in planning_sudo.slot_ids._ids:
            return request.not_found()

        slot_sudo.write({'employee_id': False})

        return redirect('/planning/%s/%s?message=%s' % (token_planning, token_employee, 'unassign'))

    @staticmethod
    def _format_planning_shifts(color_code):
        """Take a color code from Odoo's Kanban view and returns an hex code compatible with the fullcalendar library"""

        switch_color = {
            0: '#008784',   # No color (doesn't work actually...)
            1: '#EE4B39',   # Red
            2: '#F29648',   # Orange
            3: '#F4C609',   # Yellow
            4: '#55B7EA',   # Light blue
            5: '#71405B',   # Dark purple
            6: '#E86869',   # Salmon pink
            7: '#008784',   # Medium blue
            8: '#267283',   # Dark blue
            9: '#BF1255',   # Fushia
            10: '#2BAF73',  # Green
            11: '#8754B0'   # Purple
        }

        return switch_color[color_code]