# This file is part of Tryton.  The COPYRIGHT file at the top level of
# this repository contains the full copyright notices and license terms.
from trytond.wizard import Wizard, StateView, Button, StateTransition
from trytond.model import ModelSQL, ModelView, fields
from trytond.pyson import Eval, If
from trytond.pool import Pool


class Prospect(ModelSQL, ModelView):
    'Prospecto'
    __name__ = 'sale.prospect'
    _rec_name = 'name'

    name = fields.Char('Name', required=True)

    business_unit = fields.Selection(
        [('brigade', 'Brigade'),
         ('optics', 'Optics'),
         ('equipment', 'Equipment')],
        'Business unit'
    )

    contact_methods = fields.One2Many(
        'prospect.contact_method',
        'prospect', 'Contact methods', required=True)

    department = fields.Many2One('sale.department', 'Department')
    city = fields.Many2One('sale.city', 'City',
                           domain=[If(Eval('department'),
                                    ('parent', '=', Eval('department')))])

    assigned_operator = fields.Many2One(
        'res.user', "Assigned operator", readonly=True)

    state = fields.Selection([
        ('unassigned', 'Unsassigned'),
        ('assigned', 'Assigned')], "State", readonly=True)

    @classmethod
    def default_state(cls):
        return 'unassigned'

    @fields.depends('city', 'department')
    def on_change_city(self):
        if self.city:
            self.department = self.city.parent


class ContactMethod(ModelSQL, ModelView):
    'Mecanismo de contacto'
    __name__ = 'prospect.contact_method'

    contact_type = fields.Selection([
        ('phone', 'Phone'),
        ('mobile', 'Mobile'),
        ('mail', 'Mail')
        ], 'Contact type', required=True)

    value = fields.Char('Value', required=True)
    name = fields.Char('Name')
    job = fields.Char('job')

    prospect = fields.Many2One('sale.prospect', 'Prospect', required=True)

    @classmethod
    def default_contact_type(cls):
        return 'mobile'

    def get_rec_name(self, name):
        fields = [self.name, self.job, self.value]
        contact_rec_name = ''

        for field in fields:
            if field:
                contact_rec_name += ' [' + str(field) + '] '

        return contact_rec_name


class AssignOperatorStart(ModelView):
    'Inicio de asignación de operador'
    __name__ = 'sale.prospect.assign.start'

    prospects_chunk = fields.Integer('Prospects chunk', required=True)
    operator = fields.Many2One('res.user', 'Operator', required=True)
    prospects = fields.One2Many(
        'sale.prospect', None, 'Prospects')

    @classmethod
    def default_prospects_chunk(cls):
        return 0

    @fields.depends('prospects_chunk', 'prospects')
    def on_change_prospects_chunk(self):
        pool = Pool()
        Prospect = pool.get('sale.prospect')

        if self.prospects_chunk >= 1:
            self.prospects = []
            self.prospects = Prospect.search(
                [('state', '=', 'unassigned')],
                limit=self.prospects_chunk)


class AssignOperator(Wizard):
    'Asignar operador a prospecto'
    __name__ = 'sale.prospect.assign'

    start = StateView(
        'sale.prospect.assign.start',
        'sale_opportunity_management.assign_start_view_form', [
            Button("Cancel", 'end', 'tryton-cancel'),
            Button("Assign", 'assign', 'tryton-ok', default=True)])

    assign = StateTransition()

    def transition_assign(self):
        for prospect in self.start.prospects:
            prospect.assigned_operator = self.start.operator
            prospect.state = 'assigned'
            prospect.save()

        return 'end'