##############################################################################
#
# Copyright (c) 2005 TINY SPRL. (http://tiny.be) All Rights Reserved.
#
# $Id: hr.py 2189 2006-01-22 19:26:30Z pinky $
#
# WARNING: This program as such is intended to be used by professional
# programmers who take the whole responsability of assessing all potential
# consequences resulting from its eventual inadequacies and bugs
# End users who are looking for a ready-to-use solution with commercial
# garantees and support are strongly adviced to contract a Free Software
# Service Company
#
# 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 2
# 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, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
#
##############################################################################

from mx import DateTime
import time

import netsvc
from osv import fields, osv, orm

class hr_timesheet_group(osv.osv):
	_name = "hr.timesheet.group"
	_description = "Timesheet"
	_columns = {
		'name' : fields.char("Group name", size=128),
		'timesheet_id' : fields.one2many('hr.timesheet', 'tgroup_id', 'Timesheet'),
		'manager' : fields.many2one('res.users', 'Workgroup manager'),
	}
	#
	# TODO: imrpove; very slow !
	#       bug if transition to another period
	#
	def interval_get(self, cr, uid, id, dt_from, hours, byday=True):
		if not id:
			return [(dt_from,dt_from+DateTime.RelativeDateTime(hours=int(hours)*3))]
		todo = hours
		cycle = 0
		result = []
		while todo>0:
			cr.execute('select hour_from,hour_to from hr_timesheet where dayofweek=%d and tgroup_id=%d order by hour_from', (dt_from.day_of_week,id))
			for (hour_from,hour_to) in cr.fetchall():
				h1,m1 = map(int,hour_from.split(':'))
				h2,m2 = map(int,hour_to.split(':'))
				d1 = DateTime.DateTime(dt_from.year,dt_from.month,dt_from.day,h1,m1)
				d2 = DateTime.DateTime(dt_from.year,dt_from.month,dt_from.day,h2,m2)
				if dt_from<d2:
					date1 = max(dt_from,d1)
					if date1+DateTime.RelativeDateTime(hours=todo)<=d2:
						result.append((date1, date1+DateTime.RelativeDateTime(hours=todo)))
						todo = 0
					else:
						todo -= (d2-date1).hours
						result.append((date1, d2))
			dt_from = DateTime.DateTime(dt_from.year,dt_from.month,dt_from.day)+DateTime.RelativeDateTime(days=1)
			cycle+=1
			if cycle>7 and todo==hours:
				return [(dt_from,dt_from+DateTime.RelativeDateTime(hours=hours*3))]
		if byday:
			i = 1
			while i<len(result):
				if (result[i][0]-result[i-1][1]).days<1:
					result[i-1]=(result[i-1][0],result[i][1])
					del result[i]
				else:
					i+=1
		return result
hr_timesheet_group()

class hr_employee(osv.osv):
	_name = "hr.employee"
	_description = "Employee"
	_columns = {
		'name' : fields.char("Employee's Full Name", size=128, required=True),
		'active' : fields.boolean('Active'),
		'partner_id': fields.many2one('res.partner', 'Enterprise'),
		'address_id': fields.many2one('res.partner.address', 'Contact address'),
		'state' : fields.selection([('absent', 'Absent'), ('present', 'Present')], 'Attendance', readonly=True),
		'started' : fields.date("Started on"),
		'notes': fields.text('Notes'),
		'attendances' : fields.one2many('hr.attendance', 'employee_id', "Employee's attendances"),
		'holidays' : fields.one2many('hr.holidays', 'employee_id', "Employee's holidays"),
		'expenses' : fields.one2many('hr.expense', 'employee_id', "Employee's expenses"),
		'workgroups' : fields.many2many('hr.timesheet.group', 'hr_timesheet_employee_rel', 'emp_id', 'tgroup_id', "Employee's work team"),
		'user_id' : fields.many2one('res.users', 'Tiny ERP User'),
		'regime' : fields.float('Workhours by week'),
		'holiday_max' : fields.integer("Number of holidays"),
	}
	_defaults = {
		'active' : lambda *a: True,
		'state' : lambda *a: 'absent',
	}
	
	def __checkSISOTime(self, cr, emp_id):
		sql = '''
		select name
		from hr_attendance as att
		where employee_id = %d
		order by name desc
		limit 2
		''' % emp_id
		cr.execute(sql)
		atts = cr.fetchall()
		return DateTime.strptime(atts[0][0], '%Y-%m-%d %H:%M:%S') - DateTime.strptime(atts[1][0], '%Y-%m-%d %H:%M:%S')

	def sign_out(self, cr, uid, ids,*args):
		for emp in self.browse(cr, uid, ids):
			att_id = self.pool.get('hr.attendance').create(cr, uid, {'action':'sign_out', 'employee_id':emp.id})
			self.write(cr, uid, [emp.id], {'state':'absent'})
			elapsed_time = self.__checkSISOTime(cr, emp.id)
			if elapsed_time.hours >= 16:
				yesterday = (now().day_of_week + 6) % 7
				cr.execute("select hour_to from hr_timesheet as ts, hr_timesheet_group as tsg, hr_employee as emp, hr_timesheet_employee_rel as rel where ts.dayofweek<=%d and ts.tgroup_id= tsg.id and emp.id=%d and tsg.id=rel.tgroup_id and emp.id=rel.emp_id order by ts.dayofweek desc, ts.date_from desc,ts.hour_to desc limit 1", (yesterday, emp.id))
				last = cr.dictfetchall()
				if last:
					self.pool.get('hr.attendance').write(cr, uid, [att_id], {'name' : last[0]['hour_to']})
				if emp.workgroups and emp.workgroups[0].manager:
					request = self.pool.get('res.request')
					request.create(cr, uid, 
						  {'name' : "%s's sign out time" % emp.name,
						   'req_ref' : 'hr:employee:%d' % emp.id,
						   'req_type' : 'info',
						   'req_priority' : str(0),
						   'state' : 'wait',
						   'req_summary' : "Too long sign out delay (%f hours) for %s" % (elapsed_time.hours, emp.name),
						   'act_from' : emp.id,
						   'act_to' : emp.workgroups[0].manager.id,
						   'act_title' : "Too long sign out delay",
						   })
		return True
	
	def sign_in(self, cr, uid, ids, *args):
		for emp in self.browse(cr, uid, ids):
			self.pool.get('hr.attendance').create(cr, uid, {'action':'sign_in', 'employee_id':emp.id})
			self.write(cr, uid, [emp.id], {'state':'present'})
		return True

hr_employee()

class hr_timesheet(osv.osv):
	_name = "hr.timesheet"
	_description = "Timesheet Line"
	_columns = {
		'name' : fields.char("Name", size=128),
		'dayofweek': fields.selection([('0','Monday'),('1','Tuesday'),('2','Wednesday'),('3','Thursday'),('4','Friday'),('5','Saturday'),('6','Sunday')], 'Day of week'),
		'date_from' : fields.date('Starting date'),
		'hour_from' : fields.char('Work from', size=8),
		'hour_to' : fields.char("Work to", size=8),
		'tgroup_id' : fields.many2one("hr.timesheet.group", "Employee's timesheet group"),
	}
	_order = 'hour_from desc,dayofweek desc'
hr_timesheet()

class hr_action_reason(osv.osv):
	_name = "hr.action.reason"
	_description = "Action reason"
	_columns = {
		'name' : fields.char('Reason', size=64),
		'action_type' : fields.selection([('sign_in', 'Sign in'), ('sign_out', 'Sign out')], "Action's type"),
	}
hr_action_reason()

def _employee_get(obj,cr,uid,context={}):
	ids = obj.pool.get('hr.employee').search(cr, uid, [('user_id','=', uid)])
	if ids:
		return ids[0]
	return False

class hr_attendance(osv.osv):
	_name = "hr.attendance"
	_description = "Attendance"
	_columns = {
		'name' : fields.datetime('Date', size=16),
		'action' : fields.selection([('sign_in', 'Sign In'), ('sign_out', 'Sign Out')], 'Action'),
		'action_desc' : fields.many2one("hr.action.reason", "Action reason", domain="[('action_type', '=', action)]"),
		'employee_id' : fields.many2one('hr.employee', 'Employee',required=True),
	}
	_defaults = {
		'name' : lambda *a: time.strftime('%Y-%m-%d %H:%M'),
		'employee_id' : _employee_get,
	}
	
	def _altern_si_so(self, cr, uid, ids):
		sql = '''
		select action, name
		from hr_attendance as att
		where employee_id = (select employee_id from hr_attendance where id=%s)
		order by id desc
		limit 2
		''' % ids[0]
		cr.execute(sql)
		atts = cr.fetchall()
		return (len(atts)==1 and atts[0][0] == 'sign_in') or (atts[0][0] != atts[1][0] and atts[0][1] != atts[1][1])
	
	_constraints = [(_altern_si_so, 'Error: Sign in (resp. Sign out) must follow Sign out (resp. Sign in)', ['action'])]
	_order = 'name desc'

hr_attendance()

class hr_holidays_status(osv.osv):
	_name = "hr.holidays.status"
	_description = "Holidays Status"
	_columns = {
		'name' : fields.char('Holiday Status', size=64),
	}
hr_holidays_status()

class hr_holidays(osv.osv):
	_name = "hr.holidays"
	_description = "Holidays"
	_columns = {
		'name' : fields.char('Description', size=64),
		'date_from' : fields.datetime('Vacation start day'),
		'date_to' : fields.datetime('Vacation end day'),
		'holiday_status' : fields.many2one("hr.holidays.status", "Holiday's Status"),
		'employee_id' : fields.many2one('hr.employee', 'Employee', required=True),
	}
	_defaults = {
		'employee_id' : _employee_get
	}
	_order = 'date_from desc'
hr_holidays()

class hr_expense_type(osv.osv):
	_name = "hr.expense.type"
	_description = "Expense type"
	_columns = {
		'name' : fields.char('Type', size=128),
	}
hr_expense_type()

class hr_expense(osv.osv):
	_name = "hr.expense"
	_description = "Expense"
	_columns = {
		'name' : fields.char('Short Description', size=128),
		'date' : fields.date('Date'),
		'amount' : fields.float('Amount'),
		'txt' : fields.text('Long Description'),
		'type' : fields.many2one('hr.expense.type', 'Expense type'),
		'employee_id' : fields.many2one('hr.employee', 'Employee',
						required=True),
		'state' : fields.selection([('draft', 'Draft'),
									('confirm', 'Waiting confirmation'),
									('accepted', 'Accepted'),
									('refused', 'Refused')],
									'State', readonly=True),
	}
	_defaults = {
		'date' : lambda *a: time.strftime('%Y-%m-%d'),
		'state': lambda *a: 'draft',
		'employee_id' : _employee_get
	}

hr_expense()

# vim:tw=0:noexpandtab