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backend/apps/operations/migrations/0009_reportsnapshot.py

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+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("farms", "0008_cycle_feed_initial_balance"),
+        ("operations", "0008_manualinput_feed_out_manual"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="ReportSnapshot",
+            fields=[
+                (
+                    "id",
+                    models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name="ID"),
+                ),
+                (
+                    "report_type",
+                    models.CharField(
+                        choices=[("daily", "Daily"), ("end_cycle", "End Cycle")], max_length=20
+                    ),
+                ),
+                ("up_to_day", models.IntegerField(default=0)),
+                ("payload", models.JSONField(default=dict)),
+                ("generated_at", models.DateTimeField()),
+                ("created_at", models.DateTimeField(auto_now_add=True)),
+                ("updated_at", models.DateTimeField(auto_now=True)),
+                (
+                    "cycle",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="report_snapshots",
+                        to="farms.cycle",
+                    ),
+                ),
+                (
+                    "kandang",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="report_snapshots",
+                        to="farms.kandang",
+                    ),
+                ),
+            ],
+            options={
+                "verbose_name": "Report Snapshot",
+                "verbose_name_plural": "Report Snapshots",
+                "db_table": "report_snapshot",
+                "ordering": ["-updated_at"],
+                "constraints": [
+                    models.UniqueConstraint(
+                        fields=("cycle", "kandang", "report_type"),
+                        name="uniq_report_snapshot_cycle_kandang_type",
+                    )
+                ],
+            },
+        ),
+    ]