package build

import (
	"context"
	"github.com/magefile/mage/mg"
	"os"
	"os/exec"
	"path/filepath"
)

func GetBuildToolsDir() (string, error) {
	basedir, err := os.Getwd()
	if err != nil {
		return "", err
	}
	return filepath.Join(basedir, "buildtools"), nil
}

func HasExecutableInBuildtools(name string) (bool, error) {
	tooldir, err := GetBuildToolsDir()
	if err != nil {
		return false, err
	}
	info, err := os.Stat(filepath.Join(tooldir, name))
	if err != nil {
		if os.IsNotExist(err) {
			return false, nil
		} else {
			return false, err
		}
	}
	if info.Mode() & 0100 != 0 {
		return true, nil
	} else {
		return false, nil
	}
}

func InstallGoExecutable(ctx context.Context, packageNameWithVersion string) error {
	tooldir, err := GetBuildToolsDir()
	if err != nil {
		return err
	}
	cmd := exec.CommandContext(ctx, "go", "install", packageNameWithVersion)
	cmd.Env = append(os.Environ(), "GOBIN=" + tooldir)
	cmd.Stderr = os.Stderr
	if mg.Verbose() {
		cmd.Stdout = os.Stdout
	}
	return cmd.Run()
}