package templater

import (
	"fmt"
	"log"
	"runtime"

	"forge.cadoles.com/pcaseiro/templatefile/pkg/utils"
)

type SystemPackage struct {
	Name         string `json:"name"`
	Type         string `json:"type"`
	Action       string `json:"action"`
	OS           string `json:"os"`
	Distribution string `json:"distribution"`
	NameSpace    string `json:"namespace"`
	Repository   string `json:"repository"`
	URL          string `json:"url"`
}

func (p *SystemPackage) SetDistribution() error {

	// If the package type is helm or kubectl we set distribution to k8s
	if p.Type == "helm" || p.Type == "kubectl" {
		p.Distribution = p.Type
		if len(p.NameSpace) == 0 {
			p.NameSpace = p.NameSpace
		}
		return nil
	}

	OSConfig, err := utils.ReadOSRelease()
	if err != nil {
		return err
	}

	p.Distribution = OSConfig["ID_LIKE"]
	return nil
}
func (p *SystemPackage) SetOS() error {
	p.OS = runtime.GOOS
	return nil
}

func (p *SystemPackage) Manage() error {
	var pkErr error
	var stdErr []byte

	if p.OS == "" {
		if err := p.SetOS(); err != nil {
			return err
		}
	}

	if p.Distribution == "" {
		if err := p.SetDistribution(); err != nil {
			return err
		}
	}

	log.Printf("\tInstalling %s package\n", p.Name)
	switch os := p.Distribution; os {
	case "debian", "ubuntu":
		_, stdErr, pkErr = utils.RunSystemCommand("apt", "install", "-y", p.Name)
	case "alpine":
		_, stdErr, pkErr = utils.RunSystemCommand("apk", "add", p.Name)
	case "redhat":
		_, stdErr, pkErr = utils.RunSystemCommand("yum", "install", "-y", p.Name)
	case "arch":
		_, stdErr, pkErr = utils.RunSystemCommand("pacman", "-Suy", p.Name)
	case "helm":
		toInstall := fmt.Sprintf("%s/%s", p.Repository, p.Name)
		nameSpaceOPT := fmt.Sprintf("--namespace=%s", p.NameSpace)
		_, stdErr, pkErr = utils.RunSystemCommand("helm", "upgrade", "--install", p.Name, nameSpaceOPT, toInstall)
	case "kubectl":
		_, stdErr, pkErr = utils.RunSystemCommand("kubectl", "apply", p.URL)
	default:
		pkErr = fmt.Errorf("Unsupported OS %s [%s]", p.OS, stdErr)
	}

	if pkErr != nil {
		var msg string
		if len(stdErr) != 0 {
			msg = string(stdErr)
		} else {
			msg = pkErr.Error()
		}
		return fmt.Errorf("Package %s, os %s, failed with error: %v", p.Name, p.OS, msg)
	}

	return nil
}