import os, sys, django, csv

from django.db import IntegrityError

sys.path.append("../")
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "lms.settings")
django.setup()

from courses.models import Course, Vertex

if __name__ == '__main__':
    with open('./course/course.csv') as user_csv:
        user_reader = csv.DictReader(user_csv)
        for row in user_reader:
            row = dict(row)
            teachers = row.pop('teachers', None).split("[")[1].split("]")[0].split(", ")
            mentors = row.pop('mentors', None).split("[")[1].split("]")[0].split(", ")
            course, _is_create = Course.objects.get_or_create(**row)

            try:
                for teacher in teachers:
                    if teacher:
                        course.teachers.add(teacher)

                for mentor in mentors:
                    if mentor:
                        course.mentors.add(mentor)
            except IntegrityError:
                pass

    with open('./course/vertex.csv') as vertex_csv:
        vertex_reader = csv.DictReader(vertex_csv)
        for row in vertex_reader:
            row = dict(row)
            model = row.pop('type', None)
            parent = row.pop('parent', None)
            course = Course.objects.get(id=row.pop('course', None))
            parents = [parent] if parent else []
            Vertex.objects.create_with_dependencies(model=model, course=course, parents=parents, **row)