# -*- coding: utf-8 -*-
##############################################################################
#
#    OpenERP, Open Source Management Solution
#    Copyright (C) 2004-today OpenERP SA (<http://www.openerp.com>)
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU Affero General Public License as
#    published by the Free Software Foundation, either version 3 of the
#    License, or (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU Affero General Public License for more details.
#
#    You should have received a copy of the GNU Affero General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
##############################################################################

from openerp.addons.base_status.base_state import base_state
import crm
from datetime import datetime
from openerp.osv import fields, osv
from openerp.tools import DEFAULT_SERVER_DATETIME_FORMAT
from openerp.tools.translate import _

class crm_phonecall(base_state, osv.osv):
    """ Model for CRM phonecalls """
    _name = "crm.phonecall"
    _description = "Phonecall"
    _order = "id desc"
    _inherit = ['mail.thread']
    _columns = {
        # base_state required fields
        'date_action_last': fields.datetime('Last Action', readonly=1),
        'date_action_next': fields.datetime('Next Action', readonly=1),
        'create_date': fields.datetime('Creation Date' , readonly=True),
        'section_id': fields.many2one('crm.case.section', 'Sales Team', \
                        select=True, help='Sales team to which Case belongs to.'),
        'user_id': fields.many2one('res.users', 'Responsible'),
        'partner_id': fields.many2one('res.partner', 'Contact'),
        'company_id': fields.many2one('res.company', 'Company'),
        'description': fields.text('Description'),
        'state': fields.selection([ ('draft', 'Draft'),
                                    ('open', 'Confirmed'),
                                    ('pending', 'Not Held'),
                                    ('cancel', 'Cancelled'),
                                    ('done', 'Held'),],
                        string='Status', size=16, readonly=True, track_visibility='onchange',
                        help='The status is set to \'Todo\', when a case is created.\
                                If the case is in progress the status is set to \'Open\'.\
                                When the call is over, the status is set to \'Held\'.\
                                If the call needs to be done then the status is set to \'Not Held\'.'),
        'email_from': fields.char('Email', size=128, help="These people will receive email."),
        'date_open': fields.datetime('Opened', readonly=True),
        # phonecall fields
        'name': fields.char('Call Summary', size=64, required=True),
        'active': fields.boolean('Active', required=False),
        'duration': fields.float('Duration', help="Duration in Minutes"),
        'categ_id': fields.many2one('crm.case.categ', 'Category', \
                        domain="['|',('section_id','=',section_id),('section_id','=',False),\
                        ('object_id.model', '=', 'crm.phonecall')]"),
        'partner_phone': fields.char('Phone', size=32),
        'partner_mobile': fields.char('Mobile', size=32),
        'priority': fields.selection(crm.AVAILABLE_PRIORITIES, 'Priority'),
        'date_closed': fields.datetime('Closed', readonly=True),
        'date': fields.datetime('Date'),
        'opportunity_id': fields.many2one ('crm.lead', 'Lead/Opportunity'),
    }

    def _get_default_state(self, cr, uid, context=None):
        if context and context.get('default_state', False):
            return context.get('default_state')
        return 'open'

    _defaults = {
        'date': fields.datetime.now,
        'priority': crm.AVAILABLE_PRIORITIES[2][0],
        'state':  _get_default_state,
        'user_id': lambda self,cr,uid,ctx: uid,
        'active': 1
    }

    def case_close(self, cr, uid, ids, context=None):
        """ Overrides close for crm_case for setting duration """
        res = True
        for phone in self.browse(cr, uid, ids, context=context):
            phone_id = phone.id
            data = {}
            if phone.duration <=0:
                duration = datetime.now() - datetime.strptime(phone.date, DEFAULT_SERVER_DATETIME_FORMAT)
                data['duration'] = duration.seconds/float(60)
            res = super(crm_phonecall, self).case_close(cr, uid, [phone_id], context=context)
            self.write(cr, uid, [phone_id], data, context=context)
        return res

    def case_reset(self, cr, uid, ids, context=None):
        """Resets case as Todo
        """
        res = super(crm_phonecall, self).case_reset(cr, uid, ids, context)
        self.write(cr, uid, ids, {'duration': 0.0, 'state':'open'}, context=context)
        return res

    def schedule_another_phonecall(self, cr, uid, ids, schedule_time, call_summary, \
                    user_id=False, section_id=False, categ_id=False, action='schedule', context=None):
        """
        action :('schedule','Schedule a call'), ('log','Log a call')
        """
        model_data = self.pool.get('ir.model.data')
        phonecall_dict = {}
        if not categ_id:
            try:
                res_id = model_data._get_id(cr, uid, 'crm', 'categ_phone2')
                categ_id = model_data.browse(cr, uid, res_id, context=context).res_id
            except ValueError:
                pass
        for call in self.browse(cr, uid, ids, context=context):
            if not section_id:
                section_id = call.section_id and call.section_id.id or False
            if not user_id:
                user_id = call.user_id and call.user_id.id or False
            if not schedule_time:
                schedule_time = call.date
            vals = {
                    'name' : call_summary,
                    'user_id' : user_id or False,
                    'categ_id' : categ_id or False,
                    'description' : call.description or False,
                    'date' : schedule_time,
                    'section_id' : section_id or False,
                    'partner_id': call.partner_id and call.partner_id.id or False,
                    'partner_phone' : call.partner_phone,
                    'partner_mobile' : call.partner_mobile,
                    'priority': call.priority,
                    'opportunity_id': call.opportunity_id and call.opportunity_id.id or False,
            }
            new_id = self.create(cr, uid, vals, context=context)
            if action == 'log':
                self.case_close(cr, uid, [new_id])
            phonecall_dict[call.id] = new_id
        return phonecall_dict

    def _call_create_partner(self, cr, uid, phonecall, context=None):
        partner = self.pool.get('res.partner')
        partner_id = partner.create(cr, uid, {
                    'name': phonecall.name,
                    'user_id': phonecall.user_id.id,
                    'comment': phonecall.description,
                    'address': []
        })
        return partner_id

    def on_change_opportunity(self, cr, uid, ids, opportunity_id, context=None):
        values = {}
        if opportunity_id:
            opportunity = self.pool.get('crm.lead').browse(cr, uid, opportunity_id, context=context)
            values = {
                'section_id' : opportunity.section_id and opportunity.section_id.id or False,
                'partner_phone' : opportunity.phone,
                'partner_mobile' : opportunity.mobile,
                'partner_id' : opportunity.partner_id and opportunity.partner_id.id or False,
            }
        return {'value' : values}

    def _call_set_partner(self, cr, uid, ids, partner_id, context=None):
        write_res = self.write(cr, uid, ids, {'partner_id' : partner_id}, context=context)
        self._call_set_partner_send_note(cr, uid, ids, context)
        return write_res

    def _call_create_partner_address(self, cr, uid, phonecall, partner_id, context=None):
        address = self.pool.get('res.partner')
        return address.create(cr, uid, {
                    'parent_id': partner_id,
                    'name': phonecall.name,
                    'phone': phonecall.partner_phone,
        })

    def handle_partner_assignation(self, cr, uid, ids, action='create', partner_id=False, context=None):
        """
        Handle partner assignation during a lead conversion.
        if action is 'create', create new partner with contact and assign lead to new partner_id.
        otherwise assign lead to specified partner_id

        :param list ids: phonecalls ids to process
        :param string action: what has to be done regarding partners (create it, assign an existing one, or nothing)
        :param int partner_id: partner to assign if any
        :return dict: dictionary organized as followed: {lead_id: partner_assigned_id}
        """
        #TODO this is a duplication of the handle_partner_assignation method of crm_lead
        partner_ids = {}
        # If a partner_id is given, force this partner for all elements
        force_partner_id = partner_id
        for call in self.browse(cr, uid, ids, context=context):
            # If the action is set to 'create' and no partner_id is set, create a new one
            if action == 'create':
                partner_id = force_partner_id or self._call_create_partner(cr, uid, call, context=context)
                self._call_create_partner_address(cr, uid, call, partner_id, context=context)
            self._call_set_partner(cr, uid, [call.id], partner_id, context=context)
            partner_ids[call.id] = partner_id
        return partner_ids


    def redirect_phonecall_view(self, cr, uid, phonecall_id, context=None):
        model_data = self.pool.get('ir.model.data')
        # Select the view
        tree_view = model_data.get_object_reference(cr, uid, 'crm', 'crm_case_phone_tree_view')
        form_view = model_data.get_object_reference(cr, uid, 'crm', 'crm_case_phone_form_view')
        search_view = model_data.get_object_reference(cr, uid, 'crm', 'view_crm_case_phonecalls_filter')
        value = {
                'name': _('Phone Call'),
                'view_type': 'form',
                'view_mode': 'tree,form',
                'res_model': 'crm.phonecall',
                'res_id' : int(phonecall_id),
                'views': [(form_view and form_view[1] or False, 'form'), (tree_view and tree_view[1] or False, 'tree'), (False, 'calendar')],
                'type': 'ir.actions.act_window',
                'search_view_id': search_view and search_view[1] or False,
        }
        return value

    def convert_opportunity(self, cr, uid, ids, opportunity_summary=False, partner_id=False, planned_revenue=0.0, probability=0.0, context=None):
        partner = self.pool.get('res.partner')
        opportunity = self.pool.get('crm.lead')
        opportunity_dict = {}
        default_contact = False
        for call in self.browse(cr, uid, ids, context=context):
            if not partner_id:
                partner_id = call.partner_id and call.partner_id.id or False
            if partner_id:
                address_id = partner.address_get(cr, uid, [partner_id])['default']
                if address_id:
                    default_contact = partner.browse(cr, uid, address_id, context=context)
            opportunity_id = opportunity.create(cr, uid, {
                            'name': opportunity_summary or call.name,
                            'planned_revenue': planned_revenue,
                            'probability': probability,
                            'partner_id': partner_id or False,
                            'mobile': default_contact and default_contact.mobile,
                            'section_id': call.section_id and call.section_id.id or False,
                            'description': call.description or False,
                            'priority': call.priority,
                            'type': 'opportunity',
                            'phone': call.partner_phone or False,
                            'email_from': default_contact and default_contact.email,
                        })
            vals = {
                    'partner_id': partner_id,
                    'opportunity_id' : opportunity_id,
            }
            self.write(cr, uid, [call.id], vals)
            self.case_close(cr, uid, [call.id])
            opportunity.case_open(cr, uid, [opportunity_id])
            opportunity_dict[call.id] = opportunity_id
        return opportunity_dict

    def action_make_meeting(self, cr, uid, ids, context=None):
        """
        Open meeting's calendar view to schedule a meeting on current phonecall.
        :return dict: dictionary value for created meeting view
        """
        phonecall = self.browse(cr, uid, ids[0], context)
        res = self.pool.get('ir.actions.act_window').for_xml_id(cr, uid, 'base_calendar', 'action_crm_meeting', context)
        res['context'] = {
            'default_phonecall_id': phonecall.id,
            'default_partner_id': phonecall.partner_id and phonecall.partner_id.id or False,
            'default_user_id': uid,
            'default_email_from': phonecall.email_from,
            'default_state': 'open',
            'default_name': phonecall.name,
        }
        return res

    def action_button_convert2opportunity(self, cr, uid, ids, context=None):
        """
        Convert a phonecall into an opp and then redirect to the opp view.

        :param list ids: list of calls ids to convert (typically contains a single id)
        :return dict: containing view information
        """
        if len(ids) != 1:
            raise osv.except_osv(_('Warning!'),_('It\'s only possible to convert one phonecall at a time.'))

        opportunity_dict = self.convert_opportunity(cr, uid, ids, context=context)
        return self.pool.get('crm.lead').redirect_opportunity_view(cr, uid, opportunity_dict[ids[0]], context)

    # ----------------------------------------
    # OpenChatter
    # ----------------------------------------

    def _call_set_partner_send_note(self, cr, uid, ids, context=None):
        return self.message_post(cr, uid, ids, body=_("Partner has been <b>created</b>."), context=context)

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