package deploy

import (
	"embed"
	_ "embed"
	"os"

	"github.com/fatih/color"

	"git.icechen.cn/pkg/wdt/util"
)

//go:embed "*"
var deployDir embed.FS

func GenDeploy(namespace string, name string, aliasName string) error {
	color.Green("正在生成deploy...")

	// deploy 文件夹
	deployDirPath := "app/api/" + name + "/deploy"
	err := os.MkdirAll(deployDirPath, os.ModePerm)
	if err != nil {
		return err
	}

	// value.yaml
	valuesTemplate, err := deployDir.ReadFile("values.tpl")
	if err != nil {
		return err
	}
	err = util.TemplateToFile(deployDirPath+"/values.yaml",
		string(valuesTemplate),
		map[string]string{"NameSpace": namespace, "AppName": name, "AliasName": aliasName})
	if err != nil {
		return err
	}

	// Chart.yaml
	chartTemplate, err := deployDir.ReadFile("Chart.tpl")
	if err != nil {
		return err
	}
	err = util.TemplateToFile(deployDirPath+"/Chart.yaml",
		string(chartTemplate),
		map[string]string{"NameSpace": namespace, "AppName": name, "AliasName": aliasName})
	if err != nil {
		return err
	}

	// templates 文件夹
	templatesDirPath := "app/api/" + name + "/deploy/templates"
	err = os.MkdirAll(templatesDirPath, os.ModePerm)
	if err != nil {
		return err
	}

	// .helmignore 文件
	err = copyTo(".helmignore", deployDirPath+"/.helmignore")
	if err != nil {
		return err
	}

	// _helpers.tpl 文件
	err = copyTo("templates/helpers.tpl", templatesDirPath+"/_helpers.tpl")
	if err != nil {
		return err
	}

	// deployment.yaml 文件
	err = copyTo("templates/deployment.yaml", templatesDirPath+"/deployment.yaml")
	if err != nil {
		return err
	}

	// ingress.yaml 文件
	err = copyTo("templates/ingress.yaml", templatesDirPath+"/ingress.yaml")
	if err != nil {
		return err
	}

	// NOTES.txt 文件
	err = copyTo("templates/NOTES.txt", templatesDirPath+"/NOTES.txt")
	if err != nil {
		return err
	}

	// service.yaml 文件
	err = copyTo("templates/service.yaml", templatesDirPath+"/service.yaml")
	if err != nil {
		return err
	}

	return nil
}

func copyTo(fileName string, toPath string) error {
	fileContent, err := deployDir.ReadFile(fileName)
	if err != nil {
		return err
	}

	toFile, err := os.OpenFile(toPath, os.O_WRONLY|os.O_TRUNC|os.O_CREATE, os.ModePerm)
	if err != nil {
		return err
	}
	defer toFile.Close()

	_, err = toFile.Write(fileContent)
	return err
}