from unittest.mock import Mock

import jsonschema
from django.db import models

from servala.core.crd import generate_custom_form_class
from servala.core.forms import ServiceDefinitionAdminForm
from servala.core.models import ControlPlaneCRD


def test_custom_model_form_class_is_none_when_no_form_config():
    crd = Mock(spec=ControlPlaneCRD)
    service_def = Mock()
    service_def.form_config = None
    crd.service_definition = service_def
    crd.django_model = Mock()

    if not (
        crd.django_model
        and crd.service_definition
        and crd.service_definition.form_config
        and crd.service_definition.form_config.get("fieldsets")
    ):
        result = None
    else:
        result = generate_custom_form_class(
            crd.service_definition.form_config, crd.django_model
        )

    assert result is None


def test_custom_model_form_class_returns_class_when_form_config_exists():

    crd = Mock(spec=ControlPlaneCRD)
    service_def = Mock()
    service_def.form_config = {
        "fieldsets": [
            {
                "title": "General",
                "fields": [
                    {
                        "type": "text",
                        "label": "Name",
                        "controlplane_field_mapping": "name",
                        "required": True,
                    }
                ],
            }
        ]
    }
    crd.service_definition = service_def

    class TestModel(models.Model):
        name = models.CharField(max_length=100)

        class Meta:
            app_label = "test"

    crd.django_model = TestModel

    if not (
        crd.django_model
        and crd.service_definition
        and crd.service_definition.form_config
        and crd.service_definition.form_config.get("fieldsets")
    ):
        result = None
    else:
        result = generate_custom_form_class(
            crd.service_definition.form_config, crd.django_model
        )

    assert result is not None
    assert hasattr(result, "form_config")


def test_form_config_schema_validates_minimal_config():
    form = ServiceDefinitionAdminForm()
    schema = form.form_config_schema

    minimal_config = {
        "fieldsets": [
            {
                "fields": [
                    {
                        "type": "text",
                        "label": "Service Name",
                        "controlplane_field_mapping": "spec.serviceName",
                    }
                ]
            }
        ]
    }

    jsonschema.validate(instance=minimal_config, schema=schema)


def test_form_config_schema_validates_config_with_null_integers():
    form = ServiceDefinitionAdminForm()
    schema = form.form_config_schema

    config_with_nulls = {
        "fieldsets": [
            {
                "fields": [
                    {
                        "type": "text",
                        "label": "Service Name",
                        "controlplane_field_mapping": "spec.serviceName",
                        "max_length": None,
                        "required": False,
                    },
                    {
                        "type": "textarea",
                        "label": "Description",
                        "controlplane_field_mapping": "spec.description",
                        "rows": None,
                        "max_length": None,
                    },
                    {
                        "type": "number",
                        "label": "Port",
                        "controlplane_field_mapping": "spec.port",
                        "min_value": None,
                        "max_value": None,
                    },
                    {
                        "type": "array",
                        "label": "Tags",
                        "controlplane_field_mapping": "spec.tags",
                        "min_values": None,
                        "max_values": None,
                    },
                ]
            }
        ]
    }

    jsonschema.validate(instance=config_with_nulls, schema=schema)


def test_form_config_schema_validates_full_config():
    form = ServiceDefinitionAdminForm()
    schema = form.form_config_schema

    full_config = {
        "fieldsets": [
            {
                "title": "Service Configuration",
                "fields": [
                    {
                        "type": "text",
                        "label": "Service Name",
                        "controlplane_field_mapping": "spec.serviceName",
                        "help_text": "Enter a unique service name",
                        "required": True,
                        "max_length": 100,
                    },
                    {
                        "type": "email",
                        "label": "Admin Email",
                        "controlplane_field_mapping": "spec.adminEmail",
                        "help_text": "Contact email for service administrator",
                        "required": True,
                        "max_length": 255,
                    },
                    {
                        "type": "textarea",
                        "label": "Description",
                        "controlplane_field_mapping": "spec.description",
                        "help_text": "Describe the service purpose",
                        "required": False,
                        "rows": 5,
                        "max_length": 500,
                    },
                    {
                        "type": "number",
                        "label": "Port",
                        "controlplane_field_mapping": "spec.port",
                        "help_text": "Service port number",
                        "required": True,
                        "min_value": 1,
                        "max_value": 65535,
                    },
                    {
                        "type": "choice",
                        "label": "Environment",
                        "controlplane_field_mapping": "spec.environment",
                        "help_text": "Deployment environment",
                        "required": True,
                        "choices": [
                            ["dev", "Development"],
                            ["staging", "Staging"],
                            ["prod", "Production"],
                        ],
                    },
                    {
                        "type": "checkbox",
                        "label": "Enable Monitoring",
                        "controlplane_field_mapping": "spec.monitoring.enabled",
                        "help_text": "Enable service monitoring",
                        "required": False,
                    },
                    {
                        "type": "array",
                        "label": "Tags",
                        "controlplane_field_mapping": "spec.tags",
                        "help_text": "Service tags for organization",
                        "required": False,
                        "min_values": 0,
                        "max_values": 10,
                    },
                ],
            }
        ]
    }
    jsonschema.validate(instance=full_config, schema=schema)