import_nk15.py

#!/usr/env/bin python3

from django.core.management.base import BaseCommand
from django.core.management import call_command
from django.utils import timezone
import psycopg2 as  pg
import psycopg2.extras as pge
from django.db import transaction

import json
import datetime
import collections

from django.core.exceptions import ValidationError
from django.utils.timezone import make_aware

from django.db import IntegrityError
from django.contrib.auth.models import User
from note.models import Note, NoteSpecial, NoteUser, NoteClub
from note.models import Alias
from note.models import TemplateCategory, TransactionTemplate,\
    Transaction, RecurrentTransaction, MembershipTransaction, SpecialTransaction
from member.models import Profile, Club, Membership

"""
Script d'import de la nk15:
TODO: import transactions
TODO: import adhesion
TODO: import activite
TODO: import ...

"""
M_DURATION = 396
M_START = datetime.date(2019,8,31)
M_END = datetime.date(2020,9,30)


MAP_IDBDE={
    -4: 2, # Carte Bancaire
    -3: 4, # Virement
    -2: 1, # Especes
    -1: 3, # Chèque
     0: 5, # BDE
}

def update_line(n,N, content):
    n = str(n)
    N = str(N)
    n.rjust(len(N))
    print(f"\r ({n}/{N}) {content:10.10}",end="")

@transaction.atomic
def import_comptes(cur):
    cur.execute("SELECT * FROM comptes WHERE idbde > 0 ORDER BY idbde;")
    pkclub = 3
    N = cur.rowcount
    for idx, row in enumerate(cur):
        update_line(idx,N,row["pseudo"])
        if row["type"] == "personne":
            #sanitize password
            if row["passwd"] != "*|*":
                passwd_nk15 = "$".join(["custom_nk15","1",row["passwd"]])
            else:
                passwd_nk15 = ''
            try:
                obj_dict = {
                    "username": row["pseudo"],
                    "password": passwd_nk15,
                    "first_name": row["nom"],
                    "last_name": row["prenom"],
                    "email":  row["mail"],
                    "is_active" : True, # temporary
                }

                user = User.objects.create(**obj_dict)
                profile = user.profile
                profile.phone_number = row['tel']
                profile.address = row['adresse']
                profile.paid = row['normalien']
                profile.registration_valid = True
                profile.email_confirmed = True
                user.save()
                profile.save()
                # sanitize duplicate aliases (nk12)
            except ValidationError as e:
                if e.code == 'same_alias':
                    user.username = row["pseudo"]+str(row["idbde"])
                    user.save()
                else:
                    raise(e)
            # profile  and note created via signal.
            
            note = user.note
            date = row.get("last_negatif",None)
            if date != None:
                note.last_negative = make_aware(date)
            note.balance = row["solde"]
            obj_list =[user, profile, note]
            note.save()
        else: # club
            obj_dict = {
                "pk":pkclub,
                "name": row["pseudo"],
                "email": row["mail"],
                "membership_duration": M_DURATION,
                "membership_start": M_START,
                "membership_end": M_END,
                "membership_fee_paid": 0,
                "membership_fee_unpaid":0,
            }
            club,c = Club.objects.get_or_create(**obj_dict)
            pkclub +=1
            note = club.note
            note.balance = row["solde"]
            club.save()
            note.save()
            
        MAP_IDBDE[row["idbde"]] = note.note_ptr_id

@transaction.atomic
def import_boutons(cur):
    cur.execute("SELECT * FROM boutons;")
    N = cur.rowcount
    for idx, row in enumerate(cur):
        update_line(idx,N,row["label"])
        cat, created = TemplateCategory.objects.get_or_create(name=row["categorie"])
        if created:
            cat.save()
        obj_dict = {
            "pk": row["id"],
            "name": row["label"],
            "amount": row["montant"],
            "destination_id": MAP_IDBDE[row["destinataire"]],
            "category": cat,
            "display" : row["affiche"],
            "description": row["description"],
        }
        try:
            with transaction.atomic(): # required for error management
                button = TransactionTemplate.objects.create(**obj_dict)
        except IntegrityError as e:
            # button with the same name is not possible in NK20.
            if "unique" in e.args[0]:
                qs = Club.objects.filter(note__note_ptr=MAP_IDBDE[row["destinataire"]]).values('name')
                note_name = qs[0]["name"]
                #rename button name
                obj_dict["name"] ="{} {}".format(obj_dict["name"],note_name)
                button = TransactionTemplate.objects.create(**obj_dict)
            else:
                raise(e)
        button.save()

@transaction.atomic
def import_transaction(cur):
    idmin=58770
    cur.execute("SELECT *, transactions.date AS transac_date\
                   FROM transactions\
                   LEFT JOIN adhesions ON transactions.id = adhesions.id\
                   WHERE transactions.id> {}\
                   ORDER BY transactions.id;".format(idmin))
    N = cur.rowcount
    transac_list = []
    for idx, row in enumerate(cur):
        update_line(idx,N,row["description"])
        # some date are set to None, use the previous one
        date = row["transac_date"]
        obj_dict = {
           # "pk": row["id"],
            "destination_id" : MAP_IDBDE[row["destinataire"]],
            "source_id": MAP_IDBDE[row["emetteur"]],
            "created_at":make_aware(date),
            "amount":row["montant"],
            "quantity":row["quantite"],
            "reason":row["description"],
            "valid":row["valide"],
        }
        ttype = row["type"]
        if ttype == "don" or ttype == "transfert" or ttype == "invitation":
            transac = Transaction.objects.create(**obj_dict)
        elif ttype == "bouton":
            cat_name = row["categorie"]
            if cat_name == None:
                cat_name = 'None'
            cat, created = TemplateCategory.objects.get_or_create(name=cat_name)
            if created:
                cat.save()
            obj_dict["category"] = cat
            transac = RecurrentTransaction.objects.create(**obj_dict)
        elif ttype == "crédit" or ttype == "retrait":
            field_id = "source_id" if ttype == "crédit" else "destination_id"
            if "espèce" in row["description"]:
                obj_dict[field_id] = 1
            elif "carte" in row["description"]:
                obj_dict[field_id] = 2
            elif "cheques" in row["description"]:
                obj_dict[field_id] = 3
            elif "virement" in row["description"]:
                obj_dict[field_id] = 4
            pk = max(row["destinataire"], row["emetteur"])
            actor = Note.objects.get(id=MAP_IDBDE[pk])
            # custom fields of SpecialTransaction
            if actor.__class__.__name__ == "NoteUser":
                obj_dict["first_name"] = actor.user.first_name
                obj_dict["last_name"] = actor.user.last_name
            elif actor.__class__.__name__ == "NoteClub":
                obj_dict["first_name"] = actor.club.name
                obj_dict["last_name"] = actor.club.name
            else:
                raise("You should'nt be there")
            transac = SpecialTransaction.objects.create(**obj_dict)
        elif ttype == "adhésion":
            print("adhesion not supported yet")
        else:
           print("other type not supported yet")

@transaction.atomic
def import_aliases(cur):
    cur.execute("SELECT * FROM aliases ORDER by id")
    N = cur.rowcount
    for idx, row in enumerate(cur):
        update_line(idx,N,row["alias"])
        alias_name = row["alias"]
        alias_name_good = (alias_name[:252]+'...') if len(alias_name) > 255 else alias_name
        obj_dict = {
            "note_id":MAP_IDBDE[row["idbde"]],
            "name":alias_name_good,
            "normalized_name":Alias.normalize(alias_name_good)
        }
        try:
            with transaction.atomic():
                alias, created =  Alias.objects.get_or_create(**obj_dict)

        except IntegrityError as e:
            if "unique" in e.args[0]:
                continue
            else:
                raise(e)
        alias.save()


class Command(BaseCommand):
    """
    Command for importing the database of NK15.
    Need to be run by a user with a registered role in postgres for the database nk15. 
    """
    def print_success(self,to_print):
        return self.stdout.write(self.style.SUCCESS(to_print))
    
    def add_arguments(self,parser):
        parser.add_argument('-c', '--comptes', action = 'store_true', help="import accounts")
        parser.add_argument('-b', '--boutons', action = 'store_true', help="import boutons")
        parser.add_argument('-t', '--transactions', action = 'store_true',help="import transaction")
        parser.add_argument('-a', '--aliases', action = 'store_true',help="import aliases")
        parser.add_argument('-s', '--save', action='store', help="save mapping of idbde")
        parser.add_argument('-m', '--map', action='store', help="import mapping of idbde")
        parser.add_argument('-d', '--nk15db', action='store', default='nk15', help='NK15 database name')
        parser.add_argument('-u', '--nk15user', action='store', default='nk15_user', help='NK15 database owner')
       
    def handle(self, *args, **kwargs):
        global MAP_IDBDE
        nk15db, nk15user = kwargs['nk15db'], kwargs['nk15user']
        # connecting to nk15 database
        conn = pg.connect(database=nk15db,user=nk15user)
        cur = conn.cursor(cursor_factory = pge.DictCursor)

        if kwargs["comptes"]:
            #reset database.
            call_command("migrate")
            call_command("loaddata","initial")
            self.print_success("reset  nk20 database\n")
            import_comptes(cur)
            self.print_success("comptes table imported")
        elif kwargs["map"]:
            filename = kwargs["map"]
            with open(filename,'r') as fp:
                MAP_IDBDE = json.load(fp)
                MAP_IDBDE = {int(k):int(v) for k,v in MAP_IDBDE.items()}
        if kwargs["save"]:
            filename = kwargs["save"]
            with open(filename,'w') as fp:
                json.dump(MAP_IDBDE,fp,sort_keys=True, indent=2)
                
        # /!\ need a prober MAP_IDBDE
        if kwargs["boutons"]:
            import_boutons(cur)
            self.print_success("boutons table imported\n")
        if kwargs["aliases"]:
            import_aliases(cur)
            self.print_success("aliases imported\n")
        if kwargs["transactions"]:
            import_transaction(cur)
            self.print_success("transaction imported\n")