package dependencies

import (
	"os/exec"

	"git.dev.m-and-m.ovh/mderasse/gouick/models"
	"github.com/juju/errors"

	log "github.com/sirupsen/logrus"
)

// Git represent an empty struct respecting the DependencyInterface.
type Git struct{}

// regroup all git dependencies function

// GetName return the name of the dependency using DependencyName enum.
func (g Git) GetName() models.DependencyName {
	return models.DependencyName_GIT
}

// GetMinimumVersion return the minimum version required for that dependency.
func (g Git) GetMinimumVersion() string {
	return "0.0.0"
}

// IsInstalled check if the dependency is installed on the system.
func (g Git) IsInstalled() (bool, error) {
	_, err := g.GetBinaryPath()
	if err != nil && !errors.Is(err, exec.ErrNotFound) {
		return false, errors.Trace(err)
	} else if err != nil && errors.Is(err, exec.ErrNotFound) {
		return false, nil
	}

	return true, nil
}

// GetBinaryPath will search for the binary and return the path if found.
func (g Git) GetBinaryPath() (string, error) {
	log.Debug("looking for git binary")

	path, err := exec.LookPath("git")
	if err != nil {
		return "", errors.Trace(err)
	}

	log.Debug("found git binary in", path)

	return path, nil
}

// GetVersion will find the current version of the dependency.
func (g Git) GetVersion() (string, error) {
	isInstalled, err := g.IsInstalled()
	if err != nil {
		return "", errors.Trace(err)
	}

	if !isInstalled {
		return "", errors.NotFoundf("git is not installed on the system")
	}

	return "0.0.0", nil
}

// IsVersionSupported will compare the current version with the minimum expected version.
func (g Git) IsVersionSupported() (bool, error) {
	isInstalled, err := g.IsInstalled()
	if err != nil {
		return false, errors.Trace(err)
	}
	if !isInstalled {
		return false, nil
	}

	return true, nil
}

// CanBeInstalled define if the dependency installation is handled by the app.
func (g Git) CanBeInstalled() bool {
	return false
}

// DescribeInstall will do nothing for that dependency.
func (g Git) DescribeInstall(path string) string {
	return ""
}

// Install will do nothing for that dependency.
func (g Git) Install(path string) error {
	return nil
}

// DescribePostInstall will do nothing for that dependency.
func (g Git) DescribePostInstall(path string) string {
	return ""
}

// PostInstall will do nothing for that dependency.
func (g Git) PostInstall(path string) error {
	return nil
}

// GetInstallDirectory will do nothing for that dependency.
func (g Git) GetInstallDirectory() (string, error) {
	return "", nil
}