#! /usr/bin/python
# -*- coding: UTF-8 -*-

""" Gestionale pizzate: programma creato da Frafra (francesco.it@gmail.com)

    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.
"""   

__module_name__ = 'Gestionale pizzate'
__module_version__ = __revision__ = versione = '0.2'
__module_description__ = 'Per organizzare le pizzate'

def ask(message, valid_chars, min_len = 1, max_len = 10, max_retry = 10):
    for each in xrange(max_retry):
        answer = raw_input(message + ' ')
        for char in answer:
            if char.lower() not in valid_chars:
                print 'Formato non valido, riprova.'
                break
        else:
            if min_len <= len(answer) <= max_len:
                return answer
            else:
                print 'Formato non valido, riprova.'
    print 'L\'utente e\' troppo stupido per usare questo programma.'

def add():
    global db
    nome = raw_input('Nome: ')
    conf = ask('Disponibile [s/n/?]:', ['s', 'n', '?'], 1, 1)
    note = raw_input('Note: ')
    db.append(nome+'\t'+conf+'\t'+note)
    print 'Entry numero '+str(len(db))+' inserita.'

def edit():
    global db
    num = int(ask('Numero entry:', num_range, 1, len(str(len(db)))))
    nome = raw_input('Nome: ')
    conf = ask('Disponibile [s/n/?]:', ['s', 'n', '?'], 1, 1)
    note = raw_input('Note: ')
    db[num] = nome+'\t'+conf+'\t'+note
    print 'Entry numero '+str(num)+' modificata.'

def remove():
    global db
    num = int(ask('Numero entry:', num_range, 1, len(str(len(db)))))
    del db[num]
    print 'Entry numero '+str(num)+' cancellata.'

def order():
    global db
    db.sort()
    print 'Database riordinato.'

def display():
    global db
    new_db = []
    for x in xrange(len(db)):
        new_db.append(db[x].split('\t')[0])
    col = max([len(x) for x in new_db])+1
    for x in xrange(len(db)):
        try:
            nome, res, note = db[x].split('\t')
            print x, nome+' '*(col-len(nome))+res+' '+note
        except:
            nome, res = db[x].split('\t')
            print x, nome+' '*(col-len(nome))+res

def save():
    global db
    new_db = []
    name = raw_input('Nome del file: ')
    report = open(name, 'w')
    for x in xrange(len(db)):
        new_db.append(db[x].split('\t')[0])
    col = max([len(x) for x in new_db])+1
    for x in xrange(len(db)):
        try:
            nome, res, note = db[x].split('\t')
            report.write(str(x)+' '+nome+' '*(col-len(nome))+res+' '+note+'\n')
        except:
            nome, res = db[x].split('\t')
            report.write(str(x)+' '+nome+' '*(col-len(nome))+res+'\n')
    report.close()
    print 'File salvato'

def load():
    global db
    new_db = []
    name = raw_input('Nome del file: ')
    report = open(name, 'r')
    rw = ask('Sovrascrivere o Accodare? [s/a]:', ['s', 'a'], 1, 1)
    if rw == 's':
        db = []
    while 1:
        line = report.readline()
        if not line:
            break
        new_db.append(line)
    report.close()
    for x in xrange(len(new_db)):
        db.append('\t'.join(new_db[x].split()[1:]))
    print 'File importato'

def quit():
    print 'Arrivederci.'
    raise SystemExit(0)

sel = {'a':add, 'm':edit, 'c':remove, 'o':order,
       'v':display, 's':save, 'i':load, 'e':quit}
db = []
num_range = [str(x) for x in xrange(10)]

while 1:
    print 'Aggiungi entry'
    print 'Modifica entry'
    print 'Cancella entry'
    print 'Ordina entries'
    print 'Visualizza'
    print 'Salva'
    print 'Importa'
    print 'Esci'
    sel[ask('Scelta:', sel.keys(), 1, 1)]()
    print