# -*- 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 addons
import io
import logging
from osv import fields, osv
from PIL import Image
import StringIO

class hr_employee_category(osv.osv):

    def name_get(self, cr, uid, ids, context=None):
        if not ids:
            return []
        reads = self.read(cr, uid, ids, ['name','parent_id'], context=context)
        res = []
        for record in reads:
            name = record['name']
            if record['parent_id']:
                name = record['parent_id'][1]+' / '+name
            res.append((record['id'], name))
        return res

    def _name_get_fnc(self, cr, uid, ids, prop, unknow_none, context=None):
        res = self.name_get(cr, uid, ids, context=context)
        return dict(res)

    _name = "hr.employee.category"
    _description = "Employee Category"
    _columns = {
        'name': fields.char("Category", size=64, required=True),
        'complete_name': fields.function(_name_get_fnc, type="char", string='Name'),
        'parent_id': fields.many2one('hr.employee.category', 'Parent Category', select=True),
        'child_ids': fields.one2many('hr.employee.category', 'parent_id', 'Child Categories'),
        'employee_ids': fields.many2many('hr.employee', 'employee_category_rel', 'category_id', 'emp_id', 'Employees'),
    }

    def _check_recursion(self, cr, uid, ids, context=None):
        level = 100
        while len(ids):
            cr.execute('select distinct parent_id from hr_employee_category where id IN %s', (tuple(ids), ))
            ids = filter(None, map(lambda x:x[0], cr.fetchall()))
            if not level:
                return False
            level -= 1
        return True

    _constraints = [
        (_check_recursion, 'Error ! You cannot create recursive Categories.', ['parent_id'])
    ]

hr_employee_category()

class hr_job(osv.osv):

    def _no_of_employee(self, cr, uid, ids, name, args, context=None):
        res = {}
        for job in self.browse(cr, uid, ids, context=context):
            nb_employees = len(job.employee_ids or [])
            res[job.id] = {
                'no_of_employee': nb_employees,
                'expected_employees': nb_employees + job.no_of_recruitment,
            }
        return res

    def _get_job_position(self, cr, uid, ids, context=None):
        res = []
        for employee in self.pool.get('hr.employee').browse(cr, uid, ids, context=context):
            if employee.job_id:
                res.append(employee.job_id.id)
        return res

    _name = "hr.job"
    _description = "Job Description"
    _columns = {
        'name': fields.char('Job Name', size=128, required=True, select=True),
        'expected_employees': fields.function(_no_of_employee, string='Expected Employees', help='Required number of employees in total for that job.',
            store = {
                'hr.job': (lambda self,cr,uid,ids,c=None: ids, ['no_of_recruitment'], 10),
                'hr.employee': (_get_job_position, ['job_id'], 10),
            },
            multi='no_of_employee'),
        'no_of_employee': fields.function(_no_of_employee, string="Number of Employees", help='Number of employees with that job.',
            store = {
                'hr.employee': (_get_job_position, ['job_id'], 10),
            },
            multi='no_of_employee'),
        'no_of_recruitment': fields.float('Expected in Recruitment'),
        'employee_ids': fields.one2many('hr.employee', 'job_id', 'Employees'),
        'description': fields.text('Job Description'),
        'requirements': fields.text('Requirements'),
        'department_id': fields.many2one('hr.department', 'Department'),
        'company_id': fields.many2one('res.company', 'Company'),
        'state': fields.selection([('open', 'In Position'),('old', 'Old'),('recruit', 'In Recruitement')], 'Status', readonly=True, required=True),
    }
    _defaults = {
        'expected_employees': 1,
        'company_id': lambda self,cr,uid,c: self.pool.get('res.company')._company_default_get(cr, uid, 'hr.job', context=c),
        'state': 'open',
    }

    _sql_constraints = [
        ('name_company_uniq', 'unique(name, company_id)', 'The name of the job position must be unique per company!'),
    ]


    def on_change_expected_employee(self, cr, uid, ids, no_of_recruitment, no_of_employee, context=None):
        if context is None:
            context = {}
        return {'value': {'expected_employees': no_of_recruitment + no_of_employee}}

    def job_old(self, cr, uid, ids, *args):
        self.write(cr, uid, ids, {'state': 'old', 'no_of_recruitment': 0})
        return True

    def job_recruitement(self, cr, uid, ids, *args):
        for job in self.browse(cr, uid, ids):
            no_of_recruitment = job.no_of_recruitment == 0 and 1 or job.no_of_recruitment
            self.write(cr, uid, [job.id], {'state': 'recruit', 'no_of_recruitment': no_of_recruitment})
        return True

    def job_open(self, cr, uid, ids, *args):
        self.write(cr, uid, ids, {'state': 'open', 'no_of_recruitment': 0})
        return True

hr_job()

class hr_employee(osv.osv):
    _name = "hr.employee"
    _description = "Employee"
    _inherits = {'resource.resource': "resource_id"}

    def onchange_photo(self, cr, uid, ids, value, context=None):
        if not value:
            return {'value': {'photo_big': value, 'photo': value} }
        return {'value': {'photo_big': self._photo_resize(cr, uid, value, 540, 450, context=context), 'photo': self._photo_resize(cr, uid, value, context=context)} }
    
    def _set_photo(self, cr, uid, id, name, value, args, context=None):
        if not value:
            vals = {'photo_big': value}
        else:
            vals = {'photo_big': self._photo_resize(cr, uid, value, 540, 450, context=context)}
        return self.write(cr, uid, [id], vals, context=context)
    
    def _photo_resize(self, cr, uid, photo, heigth=180, width=150, context=None):
        image_stream = io.BytesIO(photo.decode('base64'))
        img = Image.open(image_stream)
        img.thumbnail((heigth, width), Image.ANTIALIAS)
        img_stream = StringIO.StringIO()
        img.save(img_stream, "JPEG")
        return img_stream.getvalue().encode('base64')
    
    def _get_photo(self, cr, uid, ids, name, args, context=None):
        result = dict.fromkeys(ids, False)
        for hr_empl in self.browse(cr, uid, ids, context=context):
            if hr_empl.photo_big:
                result[hr_empl.id] = self._photo_resize(cr, uid, hr_empl.photo_big, context=context)
        return result
    
    _columns = {
        'country_id': fields.many2one('res.country', 'Nationality'),
        'birthday': fields.date("Date of Birth"),
        'ssnid': fields.char('SSN No', size=32, help='Social Security Number'),
        'sinid': fields.char('SIN No', size=32, help="Social Insurance Number"),
        'identification_id': fields.char('Identification No', size=32),
        'otherid': fields.char('Other Id', size=64),
        'gender': fields.selection([('male', 'Male'),('female', 'Female')], 'Gender'),
        'marital': fields.selection([('single', 'Single'), ('married', 'Married'), ('widower', 'Widower'), ('divorced', 'Divorced')], 'Marital Status'),
        'department_id':fields.many2one('hr.department', 'Department'),
        'address_id': fields.many2one('res.partner', 'Working Address'),
        'address_home_id': fields.many2one('res.partner', 'Home Address'),
        'bank_account_id':fields.many2one('res.partner.bank', 'Bank Account Number', domain="[('partner_id','=',address_home_id)]", help="Employee bank salary account"),
        'work_phone': fields.char('Work Phone', size=32, readonly=False),
        'mobile_phone': fields.char('Work Mobile', size=32, readonly=False),
        'work_email': fields.char('Work E-mail', size=240),
        'work_location': fields.char('Office Location', size=32),
        'notes': fields.text('Notes'),
        'parent_id': fields.many2one('hr.employee', 'Manager'),
        'category_ids': fields.many2many('hr.employee.category', 'employee_category_rel', 'emp_id', 'category_id', 'Categories'),
        'child_ids': fields.one2many('hr.employee', 'parent_id', 'Subordinates'),
        'resource_id': fields.many2one('resource.resource', 'Resource', ondelete='cascade', required=True),
        'coach_id': fields.many2one('hr.employee', 'Coach'),
        'job_id': fields.many2one('hr.job', 'Job'),
        'photo_big': fields.binary('Big-sized employee photo', help="This field holds the photo of the employee. The photo field is used as an interface to access this field. The image is base64 encoded, and PIL-supported. Full-sized photo are however resized to 540x450 px."),
        'photo': fields.function(_get_photo, fnct_inv=_set_photo, string='Employee photo', type="binary",
            store = {
                'hr.employee': (lambda self, cr, uid, ids, c={}: ids, ['photo_big'], 10),
            }, help="Image used as photo for the employee. It is automatically resized as a 180x150 px image. A larger photo is stored inside the photo_big field."),
        'passport_id':fields.char('Passport No', size=64),
        'color': fields.integer('Color Index'),
        'city': fields.related('address_id', 'city', type='char', string='City'),
        'login': fields.related('user_id', 'login', type='char', string='Login', readonly=1),
    }

    def unlink(self, cr, uid, ids, context=None):
        resource_obj = self.pool.get('resource.resource')
        resource_ids = []
        for employee in self.browse(cr, uid, ids, context=context):
            resource = employee.resource_id
            if resource:
                resource_ids.append(resource.id)
        if resource_ids:
            resource_obj.unlink(cr, uid, resource_ids, context=context)
        return super(hr_employee, self).unlink(cr, uid, ids, context=context)

    def onchange_address_id(self, cr, uid, ids, address, context=None):
        if address:
            address = self.pool.get('res.partner').browse(cr, uid, address, context=context)
            return {'value': {'work_email': address.email, 'work_phone': address.phone, 'mobile_phone': address.mobile}}
        return {'value': {}}

    def onchange_company(self, cr, uid, ids, company, context=None):
        address_id = False
        if company:
            company_id = self.pool.get('res.company').browse(cr, uid, company, context=context)
            address = self.pool.get('res.partner').address_get(cr, uid, [company_id.partner_id.id], ['default'])
            address_id = address and address['default'] or False
        return {'value': {'address_id' : address_id}}

    def onchange_department_id(self, cr, uid, ids, department_id, context=None):
        value = {'parent_id': False}
        if department_id:
            department = self.pool.get('hr.department').browse(cr, uid, department_id)
            value['parent_id'] = department.manager_id.id
        return {'value': value}

    def onchange_user(self, cr, uid, ids, user_id, context=None):
        work_email = False
        if user_id:
            work_email = self.pool.get('res.users').browse(cr, uid, user_id, context=context).user_email
        return {'value': {'work_email' : work_email}}

    def _get_photo(self, cr, uid, context=None):
        photo_path = addons.get_module_resource('hr','images','photo.png')
        return self._photo_resize(cr, uid, open(photo_path, 'rb').read().encode('base64'), context=context)

    _defaults = {
        'active': 1,
        'photo': _get_photo,
        'marital': 'single',
        'color': 0,
    }

    def _check_recursion(self, cr, uid, ids, context=None):
        level = 100
        while len(ids):
            cr.execute('SELECT DISTINCT parent_id FROM hr_employee WHERE id IN %s AND parent_id!=id',(tuple(ids),))
            ids = filter(None, map(lambda x:x[0], cr.fetchall()))
            if not level:
                return False
            level -= 1
        return True

    _constraints = [
        (_check_recursion, 'Error ! You cannot create recursive Hierarchy of Employees.', ['parent_id']),
    ]

hr_employee()

class hr_department(osv.osv):
    _description = "Department"
    _inherit = 'hr.department'
    _columns = {
        'manager_id': fields.many2one('hr.employee', 'Manager'),
        'member_ids': fields.one2many('hr.employee', 'department_id', 'Members', readonly=True),
    }

hr_department()


class res_users(osv.osv):
    _name = 'res.users'
    _inherit = 'res.users'

    def create(self, cr, uid, data, context=None):
        user_id = super(res_users, self).create(cr, uid, data, context=context)

        # add shortcut unless 'noshortcut' is True in context
        if not(context and context.get('noshortcut', False)):
            data_obj = self.pool.get('ir.model.data')
            try:
                data_id = data_obj._get_id(cr, uid, 'hr', 'ir_ui_view_sc_employee')
                view_id  = data_obj.browse(cr, uid, data_id, context=context).res_id
                self.pool.get('ir.ui.view_sc').copy(cr, uid, view_id, default = {
                                            'user_id': user_id}, context=context)
            except:
                # Tolerate a missing shortcut. See product/product.py for similar code.
                logging.getLogger('orm').debug('Skipped meetings shortcut for user "%s"', data.get('name','<new'))

        return user_id

res_users()


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