First Commit

server/webui_embed.go

@@ -0,0 +1,60 @@
+//go:build embedui
+
+package server
+
+import (
+	"embed"
+	"io/fs"
+	"net/http"
+	"path"
+	"strings"
+)
+
+// webuiDist holds the statically-exported frontend (built with
+// `cd web && npm run build:static`, then copied into server/webui/dist). Compiled
+// into the binary only when building with `-tags embedui`. The `all:` prefix is
+// required so Next's `_next/` asset dir (leading underscore) is included.
+//
+//go:embed all:webui/dist
+var webuiDist embed.FS
+
+// webuiHandler serves the embedded SPA. Public (no JWT) — auth is enforced
+// client-side and on /api. Serves the exported per-route index.html files and
+// falls back to index.html so client-side routing still resolves unknown paths.
+func (s *Server) webuiHandler() http.Handler {
+	root, err := fs.Sub(webuiDist, "webui/dist")
+	if err != nil {
+		panic(err)
+	}
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		p := strings.TrimPrefix(path.Clean(r.URL.Path), "/")
+		if p == "" {
+			p = "index.html"
+		}
+		// 1) exact file (assets: _next/*, favicon.ico, ...)
+		// 2) route dir → <p>/index.html (trailingSlash export)
+		// 3) <p>.html
+		// 4) SPA 兜底 → index.html（交给客户端路由）
+		for _, cand := range []string{p, p + "/index.html", p + ".html"} {
+			if serveFileIfExists(w, r, root, cand) {
+				return
+			}
+		}
+		http.ServeFileFS(w, r, root, "index.html")
+	})
+}
+
+// serveFileIfExists serves name from fsys when it exists as a regular file.
+func serveFileIfExists(w http.ResponseWriter, r *http.Request, fsys fs.FS, name string) bool {
+	f, err := fsys.Open(name)
+	if err != nil {
+		return false
+	}
+	st, statErr := f.Stat()
+	_ = f.Close()
+	if statErr != nil || st.IsDir() {
+		return false
+	}
+	http.ServeFileFS(w, r, fsys, name)
+	return true
+}