feat: add feedback pools field and validation

program/migrations/0102_radiosettings_fallback_pools.py

+# Generated by Django 4.2.13 on 2024-06-25 19:31
+
+import program.models
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("program", "0101_alter_radiosettings_host_image_aspect_ratio_and_more"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="radiosettings",
+            name="fallback_pools",
+            field=models.JSONField(
+                blank=True,
+                default=dict,
+                help_text="JSON key/value pairs",
+                validators=[program.models.validate_fallback_pools],
+            ),
+        ),
+    ]

program/models.py

@@ -603,6 +603,20 @@ def validate_line_in_channels(value):
         raise DjangoValidationError(e.args[0])
 
 
+def validate_fallback_pools(value):
+    schema = {
+        "type": "object",
+        "patternProperties": {
+            "^.*$": {"type": "string"},
+        },
+    }
+
+    try:
+        jsonschema.validate(value, schema)
+    except jsonschema.exceptions.ValidationError as e:
+        raise DjangoValidationError(e.args[0])
+
+
 class RadioSettings(models.Model):
     cba_api_key = models.CharField(blank=True, max_length=64, verbose_name="CBA API key")
     cba_domains = models.JSONField(
@@ -613,6 +627,12 @@ class RadioSettings(models.Model):
         verbose_name="CBA domains",
     )
     fallback_default_pool = models.CharField(blank=True, max_length=32)
+    fallback_pools = models.JSONField(
+        blank=True,
+        default=dict,
+        help_text="JSON key/value pairs",
+        validators=[validate_fallback_pools],
+    )
     fallback_show = models.ForeignKey(
         Show, blank=True, null=True, on_delete=models.CASCADE, related_name="+"
     )