import os
import tempfile
from datetime import date

from django.conf import settings
from django.contrib.staticfiles.finders import find

from reportlab.platypus import (SimpleDocTemplate, Paragraph, Spacer,
                                PageBreak, Table, TableStyle, Image)
from reportlab.lib.pagesizes import A4, landscape
from reportlab.lib.units import cm
from reportlab.lib.enums import TA_LEFT, TA_CENTER, TA_RIGHT
from reportlab.lib import colors
from reportlab.lib.styles import ParagraphStyle as PS

style_8_c = PS(name='CORPS', fontName='Helvetica', fontSize=6, alignment = TA_CENTER)
style_normal = PS(name='CORPS', fontName='Helvetica', fontSize=8, alignment = TA_LEFT)
style_mandat = PS(name='CORPS', fontName='Helvetica', fontSize=8, alignment = TA_LEFT, leftIndent=30)
style_bold = PS(name='CORPS', fontName='Helvetica-Bold', fontSize=10, alignment = TA_LEFT)
style_title = PS(name='CORPS', fontName='Helvetica-Bold', fontSize=12, alignment = TA_LEFT, spaceBefore=2*cm)
style_adress = PS(name='CORPS', fontName='Helvetica', fontSize=10, alignment = TA_LEFT, leftIndent=280)
style_normal_right = PS(name='CORPS', fontName='Helvetica', fontSize=8, alignment = TA_RIGHT)


class ChargeSheetPDF(SimpleDocTemplate):
    """
    Génération des feuilles de charges en pdf.
    """

    def __init__(self, teacher):
        self.teacher = teacher
        filename = '{0}_{1}.pdf'.format(teacher.last_name, teacher.first_name)
        path = os.path.join(tempfile.gettempdir(), filename)
        super().__init__(path, pagesize=A4, topMargin=0*cm, leftMargin=2*cm)

    def produce(self, activities):
        self.story = []
        self.story.append(Image(find('img/header.gif'), width=520, height=75))
        self.story.append(Spacer(0, 2*cm))
        destinataire = '{0}<br/>{1}'.format(self.teacher.civility, str(self.teacher))
        self.story.append(Paragraph(destinataire, style_adress))
        self.story.append(Spacer(0, 2*cm))

        data = [[settings.CHARGE_SHEET_TITLE]]

        data.append(["Report de l'année précédente",
                     '{0:3d} pér.'.format(self.teacher.previous_report) ])
        data.append(['Mandats',
                     '{0:3d} pér.'.format(activities['tot_mandats'])])

        for act in activities['mandats']:
            data.append(['    * {0} ({1} pér.)'.format(act.subject, act.period)])

        data.append(['Enseignement (coef.2)',
                     '{0:3d} pér.'.format(activities['tot_ens'])])
        data.append(['Formation continue et autres tâches',
                     '{0:3d} pér.'.format(activities['tot_formation'])])
        data.append(['Total des heures travaillées',
                     '{0:3d} pér.'.format(activities['tot_trav']),
                     '{0:4.1f} %'.format(activities['tot_trav']/21.50)])
        data.append(['Total des heures payées',
                     '{0:3d} pér.'.format(activities['tot_paye']),
                     '{0:4.1f} %'.format(activities['tot_paye']/21.50)])
        data.append(["Report à l'année prochaine",
                     '{0:3d} pér.'.format(activities['report'])])

        t = Table(data, colWidths=[12*cm, 2*cm, 2*cm] )
        t.setStyle(TableStyle([('ALIGN',(1,0),(-1,-1),'RIGHT'),
                               ('FONT', (0,0),(-1,0), 'Helvetica-Bold'),
                               ('LINEBELOW', (0,0),(-1,0), 0.5, colors.black),
                               ('LINEABOVE', (0,-3) ,(-1,-1), 0.5, colors.black),
                               ('FONT', (0,-2),(-1,-2), 'Helvetica-Bold'),
                               ]))
        t.hAlign = TA_CENTER
        self.story.append(t)

        self.story.append(Spacer(0, 2*cm))
        d = 'La Chaux-de-Fonds, le {0}'.format(date.today().strftime('%d.%m.%y'))
        self.story.append(Paragraph(d, style_normal))
        self.story.append(Spacer(0, 0.5*cm))
        self.story.append(Paragraph('la direction', style_normal))
        self.story.append(PageBreak())
        self.build(self.story)