from django.core.management.base import BaseCommand
from judge.models import *
from collections import defaultdict
import csv
import os
from django.conf import settings


def gen_submissions():
    headers = ["uid", "pid"]
    with open(os.path.join(settings.ML_DATA_PATH, "submissions.csv"), "w") as csvfile:
        f = csv.writer(csvfile)
        f.writerow(headers)

        last_pid = defaultdict(int)
        for u in Profile.objects.all():
            used = set()
            print("Processing user", u.id)
            for s in Submission.objects.filter(user=u).order_by("-date"):
                if s.problem.id not in used:
                    used.add(s.problem.id)
                    f.writerow([u.id, s.problem.id])


def gen_users():
    headers = ["uid", "username", "rating", "points"]
    with open(os.path.join(settings.ML_DATA_PATH, "profiles.csv"), "w") as csvfile:
        f = csv.writer(csvfile)
        f.writerow(headers)

        for u in Profile.objects.all():
            f.writerow([u.id, u.username, u.rating, u.performance_points])


def gen_problems():
    headers = ["pid", "code", "name", "points", "url"]
    with open(os.path.join(settings.ML_DATA_PATH, "problems.csv"), "w") as csvfile:
        f = csv.writer(csvfile)
        f.writerow(headers)

        for p in Problem.objects.all():
            f.writerow(
                [p.id, p.code, p.name, p.points, "lqdoj.edu.vn/problem/" + p.code]
            )


class Command(BaseCommand):
    help = "generate data for ML"

    def handle(self, *args, **options):
        gen_users()
        gen_problems()
        gen_submissions()