# Generated by Django 5.1.15 on 2026-05-02 15:24

import django.db.models.deletion
from django.conf import settings
from django.db import migrations, models


class Migration(migrations.Migration):

    initial = True

    dependencies = [
        ('courses', '0001_initial'),
        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
    ]

    operations = [
        migrations.CreateModel(
            name='Enrollment',
            fields=[
                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('enrolled_at', models.DateTimeField(auto_now_add=True, verbose_name='enrolled at')),
                ('completed_at', models.DateTimeField(blank=True, null=True, verbose_name='completed at')),
                ('course', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='enrollments', to='courses.course')),
                ('student', models.ForeignKey(limit_choices_to={'role': 'student'}, on_delete=django.db.models.deletion.CASCADE, related_name='enrollments', to=settings.AUTH_USER_MODEL)),
            ],
            options={
                'verbose_name': 'enrollment',
                'verbose_name_plural': 'enrollments',
                'ordering': ['-enrolled_at'],
            },
        ),
        migrations.CreateModel(
            name='LessonProgress',
            fields=[
                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('completed_at', models.DateTimeField(blank=True, null=True, verbose_name='completed at')),
                ('enrollment', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='lesson_progress', to='enrollments.enrollment')),
                ('lesson', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='progress_records', to='courses.lesson')),
            ],
            options={
                'verbose_name': 'lesson progress',
                'verbose_name_plural': 'lesson progress',
            },
        ),
        migrations.AddIndex(
            model_name='enrollment',
            index=models.Index(fields=['student', '-enrolled_at'], name='enrollments_student_dfac97_idx'),
        ),
        migrations.AddIndex(
            model_name='enrollment',
            index=models.Index(fields=['course', '-enrolled_at'], name='enrollments_course__c1239d_idx'),
        ),
        migrations.AddConstraint(
            model_name='enrollment',
            constraint=models.UniqueConstraint(fields=('student', 'course'), name='unique_enrollment_per_student_course'),
        ),
        migrations.AddIndex(
            model_name='lessonprogress',
            index=models.Index(fields=['enrollment', 'lesson'], name='enrollments_enrollm_a65958_idx'),
        ),
        migrations.AddConstraint(
            model_name='lessonprogress',
            constraint=models.UniqueConstraint(fields=('enrollment', 'lesson'), name='unique_progress_per_enrollment_lesson'),
        ),
    ]