source: main/waeup.sirp/trunk/src/waeup/sirp/students/utils.py @ 7160

"""General helper functions for the student section.
"""
import grok
from random import SystemRandom as r
from datetime import date, datetime
from reportlab.pdfgen import canvas
from reportlab.lib.units import cm
from reportlab.lib.pagesizes import A4
from reportlab.lib.styles import getSampleStyleSheet
from reportlab.platypus import (Frame, Paragraph, Image,
    Table, Spacer)
from reportlab.platypus.tables import TableStyle
from zope.formlib.form import setUpEditWidgets
from waeup.sirp.interfaces import academic_sessions_vocab
from waeup.sirp.students.interfaces import IStudentsUtils

SLIP_STYLE = TableStyle(
    [('VALIGN',(0,0),(-1,-1),'TOP')]
    )

def generate_student_id(students,letter):
    if letter == '?':
        letter= r().choice('ABCDEFGHKLMNPQRSTUVWXY')
    sid = u"%c%d" % (letter,r().randint(99999,1000000))
    while sid in students.keys():
        sid = u"%c%d" % (letter,r().randint(99999,1000000))
    return sid

def set_returning_data(student):
    student['studycourse'].current_level += 100
    student['studycourse'].current_session += 1
    verdict = student['studycourse'].current_verdict
    student['studycourse'].current_verdict = '0'
    student['studycourse'].previous_verdict = verdict
    return

def setUpWidgets(view, ignore_request=False):
    view.adapters = {}
    view.widgets = setUpEditWidgets(
        view.form_fields, view.prefix, view.context, view.request,
        adapters=view.adapters, for_display=True,
        ignore_request=ignore_request
        )

def render_student_data(student, studentview):
    setUpWidgets(studentview, ignore_request=True)
    data = []
    style = getSampleStyleSheet()
    for widget in studentview.widgets:
        if widget.name == 'form.adm_code':
            continue
        f_label = '<font size=12>%s</font>:' % widget.label.strip()
        f_label = Paragraph(f_label, style["Normal"])
        f_text = '<font size=12>%s</font>' % widget()
        f_text = Paragraph(f_text, style["Normal"])
        data.append([f_label,f_text])
    table = Table(data,style=SLIP_STYLE)
    return table

class StudentsUtils(grok.GlobalUtility):
    """A collection of methods subject to customization.
    """
    grok.implements(IStudentsUtils)

    def get_payment_details(self,category, student):
        d = {}
        d['p_item'] = u''
        d['amount'] = 0
        d['error'] = u''
        d['p_session'] = student['studycourse'].current_session
        session = str(d['p_session'])
        try:
            academic_session = grok.getSite()['configuration'][session]
        except KeyError:
            d['error'] = u'Session configuration object is not available.'
            return d
        d['surcharge_1'] = academic_session.surcharge_1
        d['surcharge_2'] = academic_session.surcharge_2
        d['surcharge_3'] = academic_session.surcharge_3
        if category == 'schoolfee':
            d['amount'] = academic_session.school_fee_base
            d['p_item'] = student['studycourse'].certificate.code
        elif category == 'clearance':
            d['p_item'] = student['studycourse'].certificate.code
            d['amount'] = academic_session.clearance_fee
        elif category == 'bed_allocation':
            d['p_item'] = self.get_accommodation_details(student)['bt']
            d['amount'] = academic_session.booking_fee
        return d

    def get_accommodation_details(self, student):
        d = {}
        d['error'] = u''
        site_confoguration = grok.getSite()['configuration']
        d['booking_session'] = site_confoguration.accommodation_session
        d['allowed_states'] = site_confoguration.accommodation_states
        session = str(d['booking_session'])
        # Determine bed type
        studycourse = student['studycourse']
        entry_session = studycourse.entry_session
        current_level = studycourse.current_level
        end_level = studycourse.certificate.end_level
        if entry_session == grok.getSite()['configuration'].accommodation_session:
            bt = 'fr'
        elif current_level >= end_level:
            bt = 'fi'
        else:
            bt = 're'
        if student.sex == 'f':
            sex = 'female'
        else:
            sex = 'male'
        special_handling = 'regular'
        d['bt'] = u'%s_%s_%s' % (special_handling,sex,bt)
        return d

    # In the standard configuration we select the first bed found,
    # but can also randomize the selection if we like.
    def select_bed(self, available_beds):
        return available_beds[0]

    def render_pdf(self, view, subject='', filename='slip.pdf',
        student=None, studentview=None):
        # (0,0),(-1,-1) = whole table
        # (0,0),(0,-1) = first column
        # (-1,0),(-1,-1) = last column
        # (0,0),(-1,0) = first row
        # (0,-1),(-1,-1) = last row

        pdf = canvas.Canvas(filename,pagesize=A4)
        pdf.setTitle(view.label)
        pdf.setSubject(subject)
        pdf.setAuthor('%s (%s)' % (view.request.principal.title,
            view.request.principal.id))
        pdf.setCreator('WAeUP SIRP')
        width, height = A4
        style = getSampleStyleSheet()
        pdf.line(1*cm,height-(1.8*cm),width-(1*cm),height-(1.8*cm))

        story = []
        frame_header = Frame(1*cm,1*cm,width-(1.7*cm),height-(1.7*cm))
        header_title = getattr(grok.getSite(), 'name', u'Sample University')
        story.append(Paragraph(header_title, style["Heading1"]))
        frame_header.addFromList(story,pdf)

        story = []
        frame_body = Frame(1*cm,1*cm,width-(2*cm),height-(3.5*cm))
        story.append(Paragraph(view.label, style["Heading2"]))
        #story.append(HRFlowable())
        if student:
            story.append(Spacer(1, 18))
            studenttable = render_student_data(student, studentview)
            story.append(studenttable)
        story.append(Spacer(1, 18))
        setUpWidgets(view)
        data = []
        for widget in view.widgets:
            f_label = '<font size=12>%s</font>:' % widget.label.strip()
            f_label = Paragraph(f_label, style["Normal"])
            f_text = '<font size=12>%s</font>' % widget()
            f_text = Paragraph(f_text, style["Normal"])
            data.append([f_label,f_text])
        table = Table(data,style=SLIP_STYLE)
        story.append(table)
        frame_body.addFromList(story,pdf)

        story = []
        frame_footer = Frame(1*cm,0,width-(2*cm),1*cm)
        timestamp = datetime.now().strftime("%d/%m/%Y %H:%M:%S")
        f_text = '<font size=10>%s</font>' % timestamp
        story.append(Paragraph(f_text, style["Normal"]))
        frame_footer.addFromList(story,pdf)

        view.response.setHeader(
            'Content-Type', 'application/pdf')
        return pdf.getpdfdata()