##############################################################################
#
# Copyright (c) 2005-2006 TINY SPRL. (http://tiny.be) All Rights Reserved.
#
# 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.
#
##############################################################################

import wizard
import ir
from mx.DateTime import now
import pooler
import netsvc

bill_form = """<?xml version="1.0" ?>
<form string="Billing wizard">
	<field name="journal_id"/>
	<field name="sale_account_id"/>
	<newline/>
	<field name="task_total"/>
	<field name="task_invoice"/>
	<field name="invoice_num"/>
	<field name="total"/>
</form>"""

bill_fields = {
	'journal_id':{'string':'Journal', 'type':'many2one', 'relation':'account.journal', 'required': 'True'},
	'sale_account_id':{'string':'Income account', 'type':'many2one', 'relation':'account.account', 'required': 'True'},
	'invoice_num' : {'string':'Generated invoices', 'type': 'integer', 'readonly': 'True'},
	'task_total' : {'string':'Number of tasks', 'type': 'integer', 'readonly': 'True'},
	'task_invoice' : {'string':'Tasks to invoice', 'type': 'integer', 'readonly': 'True'},
	'total' : {'string':'Total Price', 'type': 'float', 'readonly': 'True'},
}

ack_form = """<?xml version="1.0" ?>
<form string="Billing wizard">
	<separator string="The orders were successfully generated" />
</form>"""

ack_fields = {}

def _compute_orders(self, cr, uid, data, context):
	tasks = pooler.get_pool(cr.dbname).get('project.task').browse(cr, uid, data['ids'])
	projects = {}
	tot = 0.0
	task_tot = 0
	task_inv = 0
	for task in tasks:
		project = task.project_id
		if not task.invoice_id and task.billable:
			if project.mode == 'project':
				tot += project.tariff
			elif project.mode == 'effective':
				tot += project.tariff * task.effective_hours
			elif project.mode == 'hour':
				tot += project.tariff * task.planned_hours
			task_inv += 1
			projects[project.id] = projects.get(project.id, []) + [task.id]
		task_tot += 1
	res = {'invoice_num': len(projects), 'total': tot, 'task_total': task_tot, 'task_invoice':task_inv}
	return res

def _do_orders(self, cr, uid, data, context):
	tasks = pooler.get_pool(cr.dbname).get('project.task').browse(cr, uid, data['ids'])
	invoiceline = pooler.get_pool(cr.dbname).get('account.invoice.line')
	customers = {}
	for task in filter(lambda t: t.billable and not t.invoice_id, tasks):
		if not task.project_id.id in customers:
			partner = task.partner_id or task.project_id.partner_id
			if not partner.id:
				raise wizard.except_wizard('Error !', 'No partner defined for the task or project.')
			if not task.project_id.pricelist_id.id:
				raise wizard.except_wizard('Error !', 'No pricelist defined in the project definition.')
			adr = pooler.get_pool(cr.dbname).get('res.partner').address_get(cr, uid, [partner.id], ['default','invoice','shipping'])

			a = partner.property_account_receivable.id
			if partner.property_payment_term:
				pay_term = partner.property_payment_term.id
			else:
				pay_term = False

			oid = pooler.get_pool(cr.dbname).get('account.invoice').create(cr, uid, {
				'name': task.project_id.name,
				'origin': 'Task:'+str(task.id),
				'state': 'draft',
				'partner_id': partner.id,
				'address_contact_id': adr['default'],
				'address_invoice_id': adr['invoice'],
				'account_id': a,
				'type': 'out_invoice',
				'currency_id': task.project_id.pricelist_id.currency_id.id,
				'payment_term': pay_term,
				'journal_id': data['form']['journal_id'],
			})
			customers[task.project_id.id] = oid
		else:
			oid = customers[task.project_id.id]

		if task.project_id.mode == 'project':
			qty = 1
		elif task.project_id.mode == 'effective':
			qty = task.effective_hours
		else:
			qty = task.planned_hours

		invoiceline.create(cr, uid, {
			'invoice_id': oid,
			'name': task.name,
			'account_id': data['form']['sale_account_id'],
			'price_unit': task.project_id.tariff,
			'quantity': qty,
			'invoice_line_tax_id': [(6,0, [t.id for t in task.project_id.tax_ids])],
			'account_analytic_id': task.project_id.category_id.id,
		})
		#pooler.get_pool(cr.dbname).get('project.task').write(cr, uid, [task.id], {'invoice_id':oid})
	return {
		'domain': "[('id','in', ["+','.join(map(str,customers.values()))+"])]",
		'name': 'Invoices',
		'view_type': 'form',
		'view_mode': 'tree,form',
		'res_model': 'account.invoice',
		'view_id': False,
		'context': "{'type':'out_invoice'}",
		'type': 'ir.actions.act_window'
	}


class wiz_bill(wizard.interface):
	states = {
		'init':{
			'actions': [_compute_orders],
			'result': {'type':'form', 'arch':bill_form, 'fields':bill_fields, 'state':[('end', 'Cancel'), ('bill', 'Ok')] },
		},
		'bill':{
			'actions': [],
			'result': {'type':'action', 'action':_do_orders, 'state':'end' },
		},
	}
wiz_bill('project.wiz_bill')

# vim:noexpandtab:tw=0