# -*- mode: python -*-
# -*- coding: utf-8 -*-

##############################################################################
#
# Gestion scolarite IUT
#
# Copyright (c) 1999 - 2020 Emmanuel Viennet.  All rights reserved.
#
# 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
#
#   Emmanuel Viennet      emmanuel.viennet@viennet.net
#
##############################################################################

"""Various HTML generation functions
"""


def horizontal_bargraph(value, mark):
    """html drawing an horizontal bar and a mark
    used to vizualize the relative level of a student
    """
    tmpl = """
    <span class="graph">
    <span class="bar" style="width: %(value)d%%;"></span>
    <span class="mark" style="left: %(mark)d%%; "></span>
    </span>
    """
    return tmpl % {"value": int(value), "mark": int(mark)}


import listhistogram


def histogram_notes(notes):
    "HTML code drawing histogram"
    if not notes:
        return ""
    bins, H = listhistogram.ListHistogram(notes, 21, minmax=(0, 20))
    D = ['<ul id="vhist-q-graph"><li class="vhist-qtr" id="vhist-q1"><ul>']
    left = 5
    colwidth = 16  # must match #q-graph li.bar width in stylesheet
    if max(H) <= 0:
        return ""
    hfactor = 95.0 / max(H)  # garde une marge de 5% pour l'esthetique
    for i in range(len(H)):
        if H[i] >= 0:
            x = left + i * (4 + colwidth)
            heightpercent = H[i] * hfactor
            if H[i] > 0:
                nn = "<p>%d</p>" % H[i]
            else:
                nn = ""
            D.append(
                '<li class="vhist-bar" style="left:%dpx;height:%f%%">%s<p class="leg">%d</p></li>'
                % (x, heightpercent, nn, i)
            )
    D.append("</ul></li></ul>")
    return "\n".join(D)