package deploy

import (
	"embed"
	_ "embed"
	"fmt"
	"git.icechen.cn/pkg/wujian_develop_tool/config"
	"os"

	"github.com/fatih/color"

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

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

func GenDeploy(namespace string, api config.Api) error {
	color.Green("正在生成deploy...")

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

	host := api.Host
	if host == "" {
		host = "api.seamlesser.com"
	}

	path := api.Path
	if path == "" {
		path = fmt.Sprintf("/%s/%s/?(.*)", namespace, api.Name)
	}

	data := map[string]string{
		"NameSpace": namespace,
		"AppName":   api.Name,
		"AliasName": api.AliasName,
		"Port":      api.Port,
		"Host":      host,
		"Path":      path}

	// value.yaml
	valuesTemplate, err := deployDir.ReadFile("values.tpl")
	if err != nil {
		return err
	}
	err = util.TemplateToFile(deployDirPath+"/values.yaml", string(valuesTemplate), data)
	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), data)
	if err != nil {
		return err
	}

	// templates 文件夹
	templatesDirPath := api.Root + "/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
}