kodflow/kitsune

package install

import (
    "fmt"
    "io"
    "net/http"
    "os/user"
    "path/filepath"
    "strings"

    "github.com/kodflow/kitsune/src/internal/kernel/storages/fs"
)

type asset struct {
    Name               string `json:"name"`
    BrowserDownloadURL string `json:"browser_download_url"`
}

func (a *asset) Download(destination string) error {

    if err := fs.CreateDirectory(destination); err != nil {
        return err
    }

    aNameSplit := strings.SplitN(a.Name, "-", 2)
    binaryPath := filepath.Join(destination, aNameSplit[0])

    root, err := user.Lookup("root")
    if err != nil {
        return err
    }

    resp, err := http.Get(a.BrowserDownloadURL)
    if err != nil {
        return err
    }
    defer resp.Body.Close()

    out, err := fs.CreateFile(binaryPath, &fs.Options{
        User:  root,
        Perms: 0755,
    })

    if err != nil {
        return err
    }
    defer out.Close()

    _, err = io.Copy(out, resp.Body)

    if err == nil {
        fmt.Printf("Download %s.\n", aNameSplit[0])
    }

    return err
}