107 lines
2.2 KiB
Go
107 lines
2.2 KiB
Go
package bucket
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import (
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"errors"
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"fmt"
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"net/url"
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"strings"
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)
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type Bucket string
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const bucketMetadataPrefix = "metadata/"
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var ErrorInvalidBucket = errors.New("invalid bucket")
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func (b Bucket) Validate() error {
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// Ensure is URL
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u, err := url.ParseRequestURI(string(b))
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if err != nil {
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return fmt.Errorf("%w: %v: %v", ErrorInvalidBucket, err.Error(), b)
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}
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if u.Scheme != "http" && u.Scheme != "https" {
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return fmt.Errorf("%w: %v", ErrorInvalidBucket, b)
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}
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if u.Host == "" || !strings.HasSuffix(u.Path, "/") {
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return fmt.Errorf("%w: %v", ErrorInvalidBucket, b)
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}
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return nil
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}
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func (b Bucket) String() string {
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return string(b)
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}
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func (b Bucket) URL(p Pathable) *url.URL {
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u, _ := url.ParseRequestURI(string(b))
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path := p.Path()
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u.Path = pathJoin(u.Path, path.Path)
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u.RawQuery = path.RawQuery
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return u
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}
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func (b Bucket) ListURL(maxKeys int, startAfter string) *url.URL {
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list := newList(photoPrefix, maxKeys, startAfter)
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return b.URL(list)
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}
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func pathJoin(paths ...string) string {
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cleanedPaths := make([]string, 0, len(paths))
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for i, path := range paths {
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cleanedPath := strings.TrimPrefix(path, "/")
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if i != len(paths)-1 {
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cleanedPath = strings.TrimSuffix(cleanedPath, "/")
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}
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if i == 0 && len(cleanedPath) == 0 {
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continue
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}
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cleanedPaths = append(cleanedPaths, cleanedPath)
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}
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return "/" + strings.Join(cleanedPaths, "/")
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}
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type Pathable interface {
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Path() *url.URL
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}
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type BucketMetadata string
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func (b Bucket) Metadata(name string) BucketMetadata {
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return BucketMetadata(bucketMetadataPrefix + name)
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}
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func (m BucketMetadata) String() string {
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return string(m)
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}
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func (m BucketMetadata) Path() *url.URL {
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return &url.URL{
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Path: string(m),
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}
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}
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func (b Bucket) MetadataTitle() BucketMetadata {
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return b.Metadata("title")
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}
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func (b Bucket) MetadataDescription() BucketMetadata {
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return b.Metadata("description")
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}
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func (b Bucket) MetadataOrdering() BucketMetadata {
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return b.Metadata("ordering")
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}
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type index string
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func (i index) Path() *url.URL {
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return &url.URL{
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Path: "/" + string(i) + "index.html",
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}
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}
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func (b Bucket) ViewURL() *url.URL {
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return b.URL(index(""))
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}
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func (b Bucket) ManageURL() *url.URL {
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return b.URL(index("manage/"))
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}
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