##############################################################################
#
# Copyright (c) 2005-2006 TINY SPRL. (http://tiny.be) All Rights Reserved.
#
# $Id: gantt_report.py 1005 2005-07-25 08:41:42Z nicoe $
#
# 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.
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##############################################################################

import StringIO
import sql_db

from report.render import render
from report.interface import report_int

from mx import DateTime
import time

from pychart import *
import pychart.legend

import _burndown

class external_pdf(render):
	def __init__(self, pdf):
		render.__init__(self)
		self.pdf = pdf
		self.output_type='pdf'
	def _render(self):
		return self.pdf

class report_tasks(report_int):
	def create(self, uid, ids, datas, context={}):
		io = StringIO.StringIO()

		canv = canvas.init(fname=io, format='pdf')
		canv.set_author("Tiny ERP")

		cr = sql_db.db.cursor()
		cr.execute('select id,date_start,date_stop from scrum_sprint where id=%d', (datas['id'],))
		for (id,date_start,date_stop) in cr.fetchall():
			date_to_int = lambda x: int(x.ticks())
			int_to_date = lambda x: '/a60{}'+DateTime.localtime(x).strftime('%d/%m/%Y')

			cr.execute('select id from project_task where product_backlog_id in(select id from scrum_product_backlog where sprint_id=%d)', (id,))

			ids = map(lambda x: x[0], cr.fetchall())
			datas = _burndown.compute_burndown(cr, uid, ids, date_start, date_stop)

			max_hour = reduce(lambda x,y: max(y[1],x), datas, 0)

			date_to_int = lambda x: int(x.ticks())
			int_to_date = lambda x: '/a60{}'+DateTime.localtime(x).strftime('%d %m %Y')

			def _interval_get(*args):
				result = []
				for i in range(20):
					d = DateTime.localtime(datas[0][0] + (((datas[-1][0]-datas[0][0])/20)*(i+1)))
					res = DateTime.DateTime(d.year, d.month, d.day).ticks()
					if (not result) or result[-1]<>res:
						result.append(res)
				return result

			ar = area.T(x_grid_style=line_style.gray50_dash1,
				x_axis=axis.X(label="Date", format=int_to_date),
				y_axis=axis.Y(label="Burndown Chart - Planned Hours"),
				x_grid_interval=_interval_get,
				x_range = (datas[0][0],datas[-1][0]),
				y_range = (0,max_hour),
				legend = None,
				size = (680,450))
			ar.add_plot(line_plot.T(data=datas))
			ar.draw(canv)
		canv.close()

		self.obj = external_pdf(io.getvalue())
		self.obj.render()
		return (self.obj.pdf, 'pdf')
report_tasks('report.scrum.sprint.burndown')
