package test

// Author: Weisen Pan
// Date: 2023-10-24


import (
    appsv1 "k8s.io/api/apps/v1"
    corev1 "k8s.io/api/core/v1"
    "k8s.io/apimachinery/knets_pkg/api/resource"
    metav1 "k8s.io/apimachinery/knets_pkg/apis/meta/v1"
)

// FakeDeploymentOption is a functional option pattern for configuring a FakeDeployment.
type FakeDeploymentOption func(*appsv1.Deployment)

// MakeFakeDeployment creates a fake Deployment object with the provided options.
func MakeFakeDeployment(name, namespace string, replica int32, cpu, memory string, opts ...FakeDeploymentOption) *appsv1.Deployment {
    // Create resource requests based on the provided CPU and memory values.
    res := corev1.ResourceList{}
    if cpu != "" {
        res[corev1.ResourceCPU] = resource.MustParse(cpu)
    }
    if memory != "" {
        res[corev1.ResourceMemory] = resource.MustParse(memory)
    }

    // Create the Deployment object with default values.
    deploy := &appsv1.Deployment{
        ObjectMeta: metav1.ObjectMeta{
            Name:      name,
            Namespace: namespace,
        },
        Spec: appsv1.DeploymentSpec{
            Replicas: &replica,
            Template: corev1.PodTemplateSpec{
                Spec: corev1.PodSpec{
                    Containers: []corev1.Container{
                        {
                            Name:  "container",
                            Image: "nginx",
                            Resources: corev1.ResourceRequirements{
                                Requests: res,
                            },
                        },
                    },
                },
            },
        },
    }

    // Apply additional options.
    for _, opt := range opts {
        opt(deploy)
    }

    return deploy
}

// WithDeploymentTolerations sets the tolerations for a Deployment.
func WithDeploymentTolerations(tolerations []corev1.Toleration) FakeDeploymentOption {
    return func(deploy *appsv1.Deployment) {
        deploy.Spec.Template.Spec.Tolerations = tolerations
    }
}

// WithDeploymentAffinity sets the affinity for a Deployment.
func WithDeploymentAffinity(affinity *corev1.Affinity) FakeDeploymentOption {
    return func(deploy *appsv1.Deployment) {
        deploy.Spec.Template.Spec.Affinity = affinity
    }
}

// WithDeploymentNodeSelector sets the node selector for a Deployment.
func WithDeploymentNodeSelector(nodeSelector map[string]string) FakeDeploymentOption {
    return func(deploy *appsv1.Deployment) {
        deploy.Spec.Template.Spec.NodeSelector = nodeSelector
    }
}