first commit

backend/apps/farms/migrations/0001_initial.py

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+# Generated by Django 5.2.17 on 2026-08-18 08:01
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Cycle',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('total_days', models.IntegerField()),
+                ('start_date', models.DateField()),
+                ('end_date', models.DateField()),
+                ('doc_in_weight', models.IntegerField()),
+                ('doc_in_count', models.IntegerField()),
+                ('status', models.CharField(choices=[('active', 'Active'), ('closed', 'Closed')], default='active', max_length=30)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+            ],
+            options={
+                'db_table': 'cycles',
+                'ordering': ['-start_date'],
+            },
+        ),
+        migrations.CreateModel(
+            name='Flock',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('flock_name', models.CharField(max_length=30)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('cycle', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.RESTRICT, related_name='flock_set', to='farms.cycle')),
+            ],
+            options={
+                'db_table': 'flock',
+                'ordering': ['flock_name'],
+            },
+        ),
+        migrations.AddField(
+            model_name='cycle',
+            name='flock',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='cycles', to='farms.flock'),
+        ),
+        migrations.CreateModel(
+            name='Site',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('site_name', models.CharField(max_length=30)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='sites', to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'db_table': 'sites',
+                'ordering': ['site_name'],
+            },
+        ),
+        migrations.CreateModel(
+            name='Kandang',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('kandang_name', models.CharField(max_length=30)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('site', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='kandangs', to='farms.site')),
+            ],
+            options={
+                'db_table': 'kandang',
+                'ordering': ['kandang_name'],
+            },
+        ),
+        migrations.AddField(
+            model_name='cycle',
+            name='kandang',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='cycles', to='farms.kandang'),
+        ),
+        migrations.AddConstraint(
+            model_name='cycle',
+            constraint=models.CheckConstraint(condition=models.Q(('end_date__gte', models.F('start_date'))), name='chk_cycles_date_range'),
+        ),
+    ]

backend/apps/farms/migrations/0002_cycle_requires_flock.py

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+# Generated by Django 5.2.17 on 2026-08-19
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+def _column_names(connection, table):
+    with connection.cursor() as cursor:
+        if connection.vendor == "sqlite":
+            cursor.execute(f"PRAGMA table_info({table})")
+            return {row[1] for row in cursor.fetchall()}
+        cursor.execute(
+            """
+            SELECT column_name
+            FROM information_schema.columns
+            WHERE table_name = %s
+            """,
+            [table],
+        )
+        return {row[0] for row in cursor.fetchall()}
+
+
+def ensure_cycle_kandang_id(apps, schema_editor):
+    connection = schema_editor.connection
+    if "kandang_id" in _column_names(connection, "cycles"):
+        return
+    with connection.cursor() as cursor:
+        cursor.execute(
+            "ALTER TABLE cycles ADD COLUMN kandang_id bigint NULL REFERENCES kandang(id)"
+        )
+
+
+def backfill_cycle_flocks(apps, schema_editor):
+    Cycle = apps.get_model("farms", "Cycle")
+    Flock = apps.get_model("farms", "Flock")
+    for cycle_id in Cycle.objects.filter(flock_id__isnull=True).values_list("pk", flat=True):
+        flock = Flock.objects.create(flock_name=f"Cycle {cycle_id}")
+        Cycle.objects.filter(pk=cycle_id).update(flock_id=flock.pk)
+        Flock.objects.filter(pk=flock.pk).update(cycle_id=cycle_id)
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("farms", "0001_initial"),
+    ]
+
+    operations = [
+        migrations.RunPython(ensure_cycle_kandang_id, migrations.RunPython.noop),
+        migrations.RunPython(backfill_cycle_flocks, migrations.RunPython.noop),
+        migrations.AlterField(
+            model_name="cycle",
+            name="flock",
+            field=models.ForeignKey(
+                on_delete=django.db.models.deletion.CASCADE,
+                related_name="cycles",
+                to="farms.flock",
+            ),
+        ),
+        migrations.AlterField(
+            model_name="cycle",
+            name="status",
+            field=models.CharField(
+                choices=[("active", "Active"), ("closed", "Closed")],
+                db_index=True,
+                default="active",
+                max_length=30,
+            ),
+        ),
+        migrations.AlterField(
+            model_name="flock",
+            name="cycle",
+            field=models.ForeignKey(
+                blank=True,
+                null=True,
+                on_delete=django.db.models.deletion.SET_NULL,
+                related_name="flock_set",
+                to="farms.cycle",
+            ),
+        ),
+    ]

backend/apps/farms/migrations/0003_flock_cycle_nullable.py

@@ -0,0 +1,52 @@
+# Generated by Django 5.2.17 on 2026-08-19
+
+from django.db import migrations
+
+
+def _sqlite_flock_cycle_notnull(connection):
+    with connection.cursor() as cursor:
+        cursor.execute("PRAGMA table_info(flock)")
+        cols = {row[1]: row for row in cursor.fetchall()}
+    cycle_col = cols.get("cycle_id")
+    return bool(cycle_col and cycle_col[3] == 1)
+
+
+def make_flock_cycle_nullable(apps, schema_editor):
+    connection = schema_editor.connection
+    if connection.vendor != "sqlite":
+        return
+    if not _sqlite_flock_cycle_notnull(connection):
+        return
+    with connection.cursor() as cursor:
+        cursor.execute("PRAGMA foreign_keys=OFF")
+        cursor.execute("ALTER TABLE flock RENAME TO flock_old")
+        cursor.execute(
+            """
+            CREATE TABLE flock (
+                id INTEGER PRIMARY KEY AUTOINCREMENT,
+                flock_name varchar(30) NOT NULL,
+                created_at datetime NOT NULL,
+                updated_at datetime NOT NULL,
+                cycle_id bigint NULL REFERENCES cycles(id)
+            )
+            """
+        )
+        cursor.execute(
+            """
+            INSERT INTO flock (id, flock_name, created_at, updated_at, cycle_id)
+            SELECT id, flock_name, created_at, updated_at, cycle_id FROM flock_old
+            """
+        )
+        cursor.execute("DROP TABLE flock_old")
+        cursor.execute("PRAGMA foreign_keys=ON")
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("farms", "0002_cycle_requires_flock"),
+    ]
+
+    operations = [
+        migrations.RunPython(make_flock_cycle_nullable, migrations.RunPython.noop),
+    ]

backend/apps/farms/migrations/0004_retarget_cycles_flock_fk.py

@@ -0,0 +1,59 @@
+# Generated by Django 5.2.17 on 2026-08-19
+
+from django.db import migrations
+
+
+def retarget_cycles_flock_fk(apps, schema_editor):
+    connection = schema_editor.connection
+    if connection.vendor != "sqlite":
+        return
+    with connection.cursor() as cursor:
+        cursor.execute("SELECT sql FROM sqlite_master WHERE name='cycles'")
+        row = cursor.fetchone()
+        if not row or "flock_old" not in (row[0] or ""):
+            return
+        cursor.execute("PRAGMA foreign_keys=OFF")
+        cursor.execute("ALTER TABLE cycles RENAME TO cycles_old")
+        cursor.execute(
+            """
+            CREATE TABLE cycles (
+                id INTEGER PRIMARY KEY AUTOINCREMENT,
+                total_days integer NOT NULL,
+                start_date date NOT NULL,
+                end_date date NOT NULL,
+                doc_in_weight integer NOT NULL,
+                doc_in_count integer NOT NULL,
+                created_at datetime NOT NULL,
+                updated_at datetime NOT NULL,
+                flock_id bigint NOT NULL REFERENCES flock(id) DEFERRABLE INITIALLY DEFERRED,
+                kandang_id bigint NOT NULL REFERENCES kandang(id) DEFERRABLE INITIALLY DEFERRED,
+                status varchar(30) NOT NULL,
+                CONSTRAINT chk_cycles_date_range CHECK (end_date >= start_date)
+            )
+            """
+        )
+        cursor.execute(
+            """
+            INSERT INTO cycles (
+                id, total_days, start_date, end_date, doc_in_weight, doc_in_count,
+                created_at, updated_at, flock_id, kandang_id, status
+            )
+            SELECT
+                id, total_days, start_date, end_date, doc_in_weight, doc_in_count,
+                created_at, updated_at, flock_id, kandang_id, status
+            FROM cycles_old
+            """
+        )
+        cursor.execute("DROP TABLE cycles_old")
+        cursor.execute("PRAGMA foreign_keys=ON")
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("farms", "0003_flock_cycle_nullable"),
+    ]
+
+    operations = [
+        migrations.RunPython(retarget_cycles_flock_fk, migrations.RunPython.noop),
+    ]

backend/apps/farms/migrations/0005_erd_named_primary_keys.py

@@ -0,0 +1,16 @@
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("accounts", "0002_erd_named_primary_keys"),
+        ("farms", "0004_retarget_cycles_flock_fk"),
+    ]
+
+    operations = [
+        migrations.RenameField(model_name="site", old_name="id", new_name="site_id"),
+        migrations.RenameField(model_name="kandang", old_name="id", new_name="kandang_id"),
+        migrations.RenameField(model_name="flock", old_name="id", new_name="flock_id"),
+        migrations.RenameField(model_name="cycle", old_name="id", new_name="cycle_id"),
+    ]

backend/apps/farms/migrations/0006_erd_flock_belongs_to_cycle.py

@@ -0,0 +1,40 @@
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+def backfill_flock_cycle_from_cycles(apps, schema_editor):
+    Cycle = apps.get_model("farms", "Cycle")
+    Flock = apps.get_model("farms", "Flock")
+
+    for cycle in Cycle.objects.exclude(flock_id__isnull=True).iterator():
+        Flock.objects.filter(pk=cycle.flock_id).update(cycle_id=cycle.pk)
+
+    Flock.objects.filter(cycle_id__isnull=True).delete()
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("farms", "0005_erd_named_primary_keys"),
+    ]
+
+    operations = [
+        migrations.RunPython(backfill_flock_cycle_from_cycles, migrations.RunPython.noop),
+        migrations.AlterField(
+            model_name="flock",
+            name="cycle",
+            field=models.ForeignKey(
+                on_delete=django.db.models.deletion.CASCADE,
+                related_name="flocks",
+                to="farms.cycle",
+            ),
+        ),
+        migrations.RemoveField(
+            model_name="cycle",
+            name="flock",
+        ),
+        migrations.AlterField(
+            model_name="cycle",
+            name="doc_in_weight",
+            field=models.FloatField(),
+        ),
+    ]

backend/apps/farms/migrations/0007_cycle_doc_in_weight_int.py

@@ -0,0 +1,16 @@
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("farms", "0006_erd_flock_belongs_to_cycle"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="cycle",
+            name="doc_in_weight",
+            field=models.IntegerField(),
+        ),
+    ]

backend/apps/farms/migrations/0008_cycle_feed_initial_balance.py

@@ -0,0 +1,16 @@
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("farms", "0007_cycle_doc_in_weight_int"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="cycle",
+            name="feed_initial_balance",
+            field=models.IntegerField(default=0),
+        ),
+    ]