package utils

import (
	"bytes"
	"text/template"

	devcontainer_apps_v1 "devstar.cn/DevcontainerApp/api/v1"
	app_v1 "k8s.io/api/apps/v1"
	core_v1 "k8s.io/api/core/v1"
	networking_v1 "k8s.io/api/networking/v1"
	yaml_util "k8s.io/apimachinery/pkg/util/yaml"
)

// parseTemplate 解析 Go Template 模板文件
func parseTemplate(templateName string, app *devcontainer_apps_v1.DevcontainerApp) []byte {
	tmpl, err := template.ParseFiles("internal/controller/templates/" + templateName + ".yaml")
	if err != nil {
		panic(err)
	}
	b := new(bytes.Buffer)
	err = tmpl.Execute(b, app)
	if err != nil {
		panic(err)
	}
	return b.Bytes()
}

// NewStatefulSet 根据创建 StatefulSet
func NewStatefulSet(app *devcontainer_apps_v1.DevcontainerApp) *app_v1.StatefulSet {
	statefulSet := &app_v1.StatefulSet{}
	err := yaml_util.Unmarshal(parseTemplate("stateful_set", app), statefulSet)
	if err != nil {
		panic(err)
	}
	return statefulSet
}

// NewService 创建 Service
func NewService(app *devcontainer_apps_v1.DevcontainerApp) *core_v1.Service {
	service := &core_v1.Service{}
	err := yaml_util.Unmarshal(parseTemplate("service", app), service)
	if err != nil {
		panic(err)
	}
	return service
}

// NewIngress 创建新的 Ingress Controller 规则
func NewIngress(app *devcontainer_apps_v1.DevcontainerApp) *networking_v1.Ingress {
	ingress := &networking_v1.Ingress{}
	err := yaml_util.Unmarshal(parseTemplate("ingress", app), ingress)
	if err != nil {
		panic(err)
	}
	return ingress
}