darroyo
596981b63b
webui: use fs.Sub to fix embed FS root so static assets are found Previously http.FileServer searched for assets/foo.css in the embed FS rooted at dist/, but only paths starting with dist/ resolve. fs.Sub strips the dist/ prefix so FileServer finds the actual files.
48 lines
1.0 KiB
Go
48 lines
1.0 KiB
Go
package webui
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import (
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"embed"
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"io/fs"
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"net/http"
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)
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//go:embed dist
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var DistFS embed.FS
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var distSub, _ = fs.Sub(DistFS, "dist")
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func ServeHTTP() http.Handler {
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return http.FileServer(http.FS(distSub))
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}
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func ServeSPA() http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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path := r.URL.Path
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if path == "/favicon.ico" {
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w.WriteHeader(http.StatusNoContent)
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return
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}
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if path == "/" || !isStaticAsset(path) {
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data, err := DistFS.ReadFile("dist/index.html")
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if err != nil {
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http.Error(w, "not found", http.StatusNotFound)
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return
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}
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w.Header().Set("Content-Type", "text/html")
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w.Write(data)
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return
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}
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http.FileServer(http.FS(distSub)).ServeHTTP(w, r)
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})
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}
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func isStaticAsset(path string) bool {
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exts := []string{".js", ".css", ".png", ".jpg", ".jpeg", ".gif", ".svg", ".ico", ".woff", ".woff2", ".ttf", ".eot", ".map"}
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for _, ext := range exts {
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if len(path) > len(ext) && path[len(path)-len(ext):] == ext {
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return true
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}
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}
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return false
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}
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