# -*- encoding: utf-8 -*-
##############################################################################
#
#    OpenERP, Open Source Management Solution
#    Copyright (C) 2004-2009 Tiny SPRL (<http://tiny.be>). All Rights Reserved
#    $Id$
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU 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 General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
##############################################################################

from osv import fields,osv
from lxml import etree
import tools
import netsvc
import os

def _check_xml(self, cr, uid, ids, context={}):
    for view in self.browse(cr, uid, ids, context):
        eview = etree.fromstring(view.arch.encode('utf8'))
        frng = tools.file_open(os.path.join('base','rng','view.rng'))
        relaxng = etree.RelaxNG(file=frng)
        if not relaxng.validate(eview):
            logger = netsvc.Logger()
            logger.notifyChannel('init', netsvc.LOG_ERROR, 'The view does not fit the required schema !')
            logger.notifyChannel('init', netsvc.LOG_ERROR, relaxng.error_log.last_error)
            return False
    return True

class view_custom(osv.osv):
    _name = 'ir.ui.view.custom'
    _columns = {
        'ref_id': fields.many2one('ir.ui.view', 'Orignal View'),
        'user_id': fields.many2one('res.users', 'User'),
        'arch': fields.text('View Architecture', required=True),
    }
view_custom()

class view(osv.osv):
    _name = 'ir.ui.view'
    _columns = {
        'name': fields.char('View Name',size=64,  required=True),
        'model': fields.char('Object', size=64, required=True),
        'priority': fields.integer('Priority', required=True),
        'type': fields.selection((
            ('tree','Tree'),
            ('form','Form'),
            ('graph', 'Graph'),
            ('calendar', 'Calendar'),
            ('gantt', 'Gantt')), 'View Type', required=True),
        'arch': fields.text('View Architecture', required=True),
        'inherit_id': fields.many2one('ir.ui.view', 'Inherited View', ondelete='cascade'),
        'field_parent': fields.char('Childs Field',size=64),
    }
    _defaults = {
        'arch': lambda *a: '<?xml version="1.0"?>\n<tree title="Unknwown">\n\t<field name="name"/>\n</tree>',
        'priority': lambda *a: 16
    }
    _order = "priority"
    _constraints = [
        (_check_xml, 'Invalid XML for View Architecture!', ['arch'])
    ]

    def create(self, cr, uid, vals, context={}):
       if 'inherit_id' in vals:
           obj=self.browse(cr,uid,vals['inherit_id'])
           child=self.pool.get(vals['model'])
           error="Inherited view model [%s] and \
                                 \n\n base view model [%s] do not match \
                                 \n\n It should be same as base view model " \
                                 %(vals['model'],obj.model)
           try:
               if obj.model==child._inherit:
                pass
           except:
               if not obj.model==vals['model']:
                raise Exception(error)

       return super(view,self).create(cr, uid, vals, context={})

    def read(self, cr, uid, ids, fields=None, context={}, load='_classic_read'):

        if not isinstance(ids, (list, tuple)):
            ids = [ids]

        result = super(view, self).read(cr, uid, ids, fields, context, load)

        for rs in result:
            if rs.get('model') == 'board.board':
                cr.execute("select id,arch,ref_id from ir_ui_view_custom where user_id=%s and ref_id=%s", (uid, rs['id']))
                oview = cr.dictfetchall()
                if oview:
                    rs['arch'] = oview[0]['arch']


        return result

    def write(self, cr, uid, ids, vals, context={}):

        if not isinstance(ids, (list, tuple)):
            ids = [ids]

        exist = self.pool.get('ir.ui.view').browse(cr, uid, ids[0])
        if exist.model == 'board.board' and 'arch' in vals:
            vids = self.pool.get('ir.ui.view.custom').search(cr, uid, [('user_id','=',uid), ('ref_id','=',ids[0])])
            vals2 = {'user_id': uid, 'ref_id': ids[0], 'arch': vals.pop('arch')}

            # write fields except arch to the `ir.ui.view`
            result = super(view, self).write(cr, uid, ids, vals, context)

            if not vids:
                self.pool.get('ir.ui.view.custom').create(cr, uid, vals2)
            else:
                self.pool.get('ir.ui.view.custom').write(cr, uid, vids, vals2)

            return result

        return super(view, self).write(cr, uid, ids, vals, context)
view()

class view_sc(osv.osv):
    _name = 'ir.ui.view_sc'
    _columns = {
        'name': fields.char('Shortcut Name', size=64, required=True),
        'res_id': fields.many2one('ir.ui.menu','Resource Ref.', ondelete='cascade'),
        'sequence': fields.integer('Sequence'),
        'user_id': fields.many2one('res.users', 'User Ref.', required=True, ondelete='cascade'),
        'resource': fields.char('Resource Name', size=64, required=True)
    }

    def get_sc(self, cr, uid, user_id, model='ir.ui.menu', context={}):
        ids = self.search(cr, uid, [('user_id','=',user_id),('resource','=',model)], context=context)
        return self.read(cr, uid, ids, ['res_id','name'], context=context)

    _order = 'sequence'
    _defaults = {
        'resource': lambda *a: 'ir.ui.menu',
        'user_id': lambda obj, cr, uid, context: uid,
    }
view_sc()

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