# -*- coding: utf-8 -*-
##############################################################################
#
#    OpenERP, Open Source Management Solution
#    Copyright (C) 2004-2010 Tiny SPRL (<http://tiny.be>).
#
#    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/>.
#
##############################################################################
import time

from osv import osv, fields
from tools.translate import _

class account_partner_reconcile_process(osv.osv_memory):
    _name = 'account.partner.reconcile.process'
    _description = 'Reconcilation Process partner by partner'

    def _get_to_reconcile(self, cr, uid, context=None):
        cr.execute(
                "SELECT l.partner_id " \
                "FROM account_move_line AS l LEFT JOIN res_partner p ON (p.id = l.partner_id) " \
                "WHERE l.reconcile_id IS NULL " \
                "AND (%s >  to_char(p.last_reconciliation_date, 'YYYY-MM-DD') " \
                    "OR  p.last_reconciliation_date IS NULL ) " \
                "AND l.state <> 'draft' " \
                "GROUP BY l.partner_id ",(time.strftime('%Y-%m-%d'),)
        )
        return len(map(lambda x: x[0], cr.fetchall())) - 1

    def _get_today_reconciled(self, cr, uid, context=None):
        cr.execute(
                "SELECT l.partner_id " \
                "FROM account_move_line AS l LEFT JOIN res_partner p ON (p.id = l.partner_id) " \
                "WHERE l.reconcile_id IS NULL " \
                "AND %s =  to_char(p.last_reconciliation_date, 'YYYY-MM-DD') " \
                "AND l.state <> 'draft' " \
                "GROUP BY l.partner_id ",(time.strftime('%Y-%m-%d'),)
        )
        return len(map(lambda x: x[0], cr.fetchall())) + 1

    def _get_partner(self, cr, uid, context=None):
        partner = self.pool.get('account.move.line').get_next_partner_only(cr, uid, offset=1, context=context)
        if not partner:
            return False
        return partner[0]

    def data_get(self, cr, uid, to_reconcile, today_reconciled, context=None):
        return {'progress': (100 / float(to_reconcile + today_reconciled)) * today_reconciled}

    def default_get(self, cr, uid, fields, context=None):
        res = super(account_partner_reconcile_process, self).default_get(cr, uid, fields, context=context)
        if 'to_reconcile' in res and 'today_reconciled' in res:
            data = self.data_get(cr, uid, res['to_reconcile'], res['today_reconciled'], context)
            res.update(data)
        return res

    def next_partner(self, cr, uid, ids, context=None):
        partner_id = self.pool.get('account.move.line').read(cr, uid, context['active_id'], ['partner_id'])['partner_id'][0]
        self.pool.get('res.partner').write(cr, uid, partner_id, {'last_reconciliation_date': time.strftime('%Y-%m-%d')}, context)
        #TODO: we have to find a way to update the context of the current tab (we could open a new tab with the context but it's not really handy)
        #TODO: remove that comments when the client side dev is done
        #context.update({'partner_id': self.browse(cr, uid, ids, context)[0].next_partner_id})
        #return {'context': context,
        #        'target': 'opener',
        #        'name': 'reconciliation process',
        #        'view_type': 'form',
        #        'view_mode': 'tree,form',
        #        'res_model': 'account.move.line',
        #        'type': 'ir.actions.act_window'
        #}
        return {}

    _columns = {
        'to_reconcile': fields.float('Remaining Partners', readonly=True, help='This is the remaining partners for who you should check if there is something to reconcile or not. This figure already count the current partner as reconciled.'),
        'today_reconciled': fields.float('Partners Reconciled Today', readonly=True, help='This figure depicts the total number of partners that have gone throught the reconciliation process today. The current partner is counted as already processed.'),
        'progress': fields.float('Progress', readonly=True, help='Shows you the progress made today on the reconciliation process. Given by \nPartners Reconciled Today \ (Remaining Partners + Partners Reconciled Today)'),
        'next_partner_id': fields.many2one('res.partner', 'Next Partner to Reconcile', readonly=True, help='This field shows you the next partner that will be automatically chosen by the system to go through the reconciliation process, based on the latest day it have been reconciled.'), # TODO: remove the readonly=True when teh client side will allow to update the context of existing tab, so that the user can change this value if he doesn't want to follow openerp proposal
    }

    _defaults = {
        'to_reconcile': _get_to_reconcile,
        'today_reconciled': _get_today_reconciled,
        'next_partner_id': _get_partner,
    }

account_partner_reconcile_process()

# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4: