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asset.go
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asset.go
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package goadmin
import (
"io/ioutil"
"net/http"
"os"
"path/filepath"
"github.com/pkg/errors"
)
type Asset struct {
Path string
URL string
}
func (a *Admin) LoadSources() error {
for _, source := range js {
err := a.loadSource(a.AssetsPath, source)
if err != nil {
// todo: wrap error
return err
}
}
for _, source := range css {
err := a.loadSource(a.AssetsPath, source)
if err != nil {
// todo: wrap error
return err
}
}
for _, source := range views {
err := a.loadSource(a.ViewsPath, source)
if err != nil {
// todo: wrap error
return err
}
}
return nil
}
func (Admin) loadSource(path string, source Asset) error {
sourcePath := filepath.Join(path, source.Path)
_, err := os.Stat(sourcePath)
if err != nil && !os.IsNotExist(err) {
return errors.Wrapf(err, "loading asset %s (%s) source failed",
source.Path, source.URL,
)
}
if os.IsNotExist(err) {
sourceDir := filepath.Dir(sourcePath)
err = os.MkdirAll(sourceDir, os.ModePerm)
if err != nil {
return errors.Wrapf(err, "make assets dir %s failed",
sourceDir,
)
}
resp, err := http.Get(source.URL)
if err != nil {
return errors.Wrapf(err, "loading asset source from url %s failed", source.URL)
}
defer func() {
_ = resp.Body.Close()
}()
b, err := ioutil.ReadAll(resp.Body)
if err != nil {
// todo: wrap error
return err
}
err = ioutil.WriteFile(sourcePath, b, os.ModePerm)
if err != nil {
// todo: wrap error
return err
}
}
return nil
}