"""General helper functions for the student section.
"""

from random import SystemRandom as r
from waeup.sirp.students.vocabularies import academic_sessions_vocab

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 getPaymentDetails(category, student):
    p_session = student['studycourse'].current_session
    surcharge_1 = surcharge_2 = surcharge_3 = 0
    p_item = u''
    if category == 'transfer':
        amount = 500
    elif category == 'gown':
        amount = 500
    elif category == 'hostel_maintenance':
        amount = 300
    elif category == 'schoolfee':
        surcharge_1 = 1500 # BT amount
        surcharge_2 = 300 # Interswitch amount
        amount = getSchoolFee(student, surcharge_1 + surcharge_2)
        code = student['studycourse'].certificate.code
        #session_string = academic_sessions_vocab.by_value[p_session + 1].title
        p_item = code
        p_session += 1
    return amount, p_item, p_session, surcharge_1, surcharge_2, surcharge_3

# To be moved to the FUTMinna customization package
def getSchoolFee(student, surcharge):
    study_mode = student['studycourse'].certificate.study_mode
    entry_mode = student.entry_mode
    state = student.state
    #lga = student.lga
    lga = 'nothing'
    current_level = student['studycourse'].current_level
    CLEARED = 'cleared'

    if study_mode.endswith('_ft'):
        # fresh remedial
        if current_level == 0 and state == CLEARED:
            if entry_mode == 'rmd_ft':
                return 80200 - surcharge
            else:
                return 74200 - surcharge
        # fresh
        elif state == CLEARED:
            if study_mode == 'jm_ft':
                return 72700 - surcharge
            elif lga == 'foreigner':
                return 131500 - surcharge
            else:
                return 41500 - surcharge
        # returning
        elif state == 'returning':
            if study_mode == 'jm_ft':
                return 32500 - surcharge
            elif lga == 'foreigner':
                return 109500 - surcharge
            else:
                return 19500 - surcharge
        else:
            return 0
    else:
        return 0