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* feat: add spa package * chore:fix typo * fix: remove spa type * fix: remove panic * fix: merge handlers
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,32 @@ | ||
| package spa | ||
|
|
||
| import ( | ||
| "errors" | ||
| "io/fs" | ||
| "net/http" | ||
| ) | ||
|
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||
| // router is the http filesystem which only serves files | ||
| // and prevent the directory traversal. | ||
| type router struct { | ||
| index string | ||
| fs http.FileSystem | ||
| } | ||
|
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| // Open inspects the URL path to locate a file within the static dir. | ||
| // If a file is found, it will be served. If not, the file located at | ||
| // the index path on the SPA handler will be served. | ||
| func (r *router) Open(name string) (http.File, error) { | ||
| file, err := r.fs.Open(name) | ||
|
|
||
| if err == nil { | ||
| return file, nil | ||
| } | ||
| // Serve index if file does not exist. | ||
| if errors.Is(err, fs.ErrNotExist) { | ||
| file, err := r.fs.Open(r.index) | ||
| return file, err | ||
| } | ||
|
|
||
| return nil, err | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,40 @@ | ||
| package spa | ||
|
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| import ( | ||
| "embed" | ||
| "errors" | ||
| "fmt" | ||
| "io/fs" | ||
| "net/http" | ||
|
|
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| "github.com/NYTimes/gziphandler" | ||
| ) | ||
|
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| // Handler return a file server http handler for single page | ||
| // application. This handler can be mounted on your mux server. | ||
| // | ||
| // If gzip is set true, handler gzip the response body, for clients | ||
| // which support it. Usually it also can be left to proxies like Nginx, | ||
| // this method is useful when that's undesirable. | ||
| func Handler(build embed.FS, dir string, index string, gzip bool) (http.Handler, error) { | ||
| fsys, err := fs.Sub(build, dir) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("couldn't create sub filesystem: %w", err) | ||
| } | ||
|
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| if _, err = fsys.Open(index); err != nil { | ||
| if errors.Is(err, fs.ErrNotExist) { | ||
| return nil, fmt.Errorf("ui is enabled but no index.html found: %w", err) | ||
| } else { | ||
| return nil, fmt.Errorf("ui assets error: %w", err) | ||
| } | ||
| } | ||
| router := &router{index: index, fs: http.FS(fsys)} | ||
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| hlr := http.FileServer(router) | ||
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| if !gzip { | ||
| return hlr, nil | ||
| } | ||
| return gziphandler.GzipHandler(hlr), nil | ||
| } |