

from __future__ import print_function, unicode_literals, absolute_import, division

from sqlalchemy import Column, Integer, UnicodeText
from reahl.sqlalchemysupport import Session, Base

from reahl.web.fw import UserInterface, Widget
from reahl.web.ui import HTML5Page, Form, TextInput, LabelledBlockInput, Button, Panel, P, H, InputGroup
from reahl.component.modelinterface import exposed, EmailField, Field, Event, Action


class AddressBookUI(UserInterface):
    def assemble(self):
        self.define_view('/', title='Addresses', page=AddressBookPage.factory())


class AddressBookPage(HTML5Page):
    def __init__(self, view):
        super(AddressBookPage, self).__init__(view, style='basic')
        self.body.add_child(AddressBookPanel(view))


class AddressBookPanel(Panel):
    def __init__(self, view):
        super(AddressBookPanel, self).__init__(view)

        self.add_child(H(view, 1, text='Addresses'))
        
        for address in Session.query(Address).all():
            self.add_child(AddressBox(view, address))

        self.add_child(AddAddressForm(view))


class AddAddressForm(Form):
    def __init__(self, view):
        super(AddAddressForm, self).__init__(view, 'add_form')

        new_address = Address()

        grouped_inputs = self.add_child(InputGroup(view, label_text='Add an address'))
        grouped_inputs.add_child( LabelledBlockInput(TextInput(self, new_address.fields.name)) )
        grouped_inputs.add_child( LabelledBlockInput(TextInput(self, new_address.fields.email_address)) )

        self.define_event_handler(new_address.events.save)
        grouped_inputs.add_child(Button(self, new_address.events.save))


class AddressBox(Widget):
    def __init__(self, view, address):
        super(AddressBox, self).__init__(view)
        self.add_child(P(view, text='%s: %s' % (address.name, address.email_address)))


class Address(Base):
    __tablename__ = 'addressbook2_address'

    id            = Column(Integer, primary_key=True)
    email_address = Column(UnicodeText)
    name          = Column(UnicodeText)

    @exposed
    def fields(self, fields):
        fields.name = Field(label='Name', required=True)
        fields.email_address = EmailField(label='Email', required=True)

    def save(self):
        Session.add(self)
        
    @exposed
    def events(self, events):
        events.save = Event(label='Save', action=Action(self.save))

