56 lines
1.5 KiB
Go
56 lines
1.5 KiB
Go
// Package adminui serves the compiled management console from the API binary.
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package adminui
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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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"path"
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"strings"
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)
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//go:embed all:dist
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var assets embed.FS
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func Handler() http.Handler {
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root, _ := fs.Sub(assets, "dist")
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files := http.FileServer(http.FS(root))
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if r.Method != http.MethodGet && r.Method != http.MethodHead {
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w.Header().Set("Allow", "GET, HEAD")
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http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
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return
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}
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name := strings.TrimPrefix(path.Clean("/"+r.URL.Path), "/")
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if strings.HasPrefix(name, ".") || strings.Contains(name, "/.") {
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http.NotFound(w, r)
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return
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}
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if _, err := fs.Stat(root, "index.html"); err != nil {
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http.Error(w, "Management console not built. Run make admin-build, then rebuild the API.", http.StatusServiceUnavailable)
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return
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}
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if name != "" && name != "." {
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if info, err := fs.Stat(root, name); err == nil && !info.IsDir() {
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files.ServeHTTP(w, r)
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return
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}
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}
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if path.Ext(name) != "" || strings.HasPrefix(name, "assets/") {
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http.NotFound(w, r)
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return
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}
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index, err := fs.ReadFile(root, "index.html")
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if err != nil {
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http.Error(w, "Management console unavailable", http.StatusServiceUnavailable)
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return
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}
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w.Header().Set("Content-Type", "text/html; charset=utf-8")
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w.Header().Set("Cache-Control", "no-cache")
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w.WriteHeader(http.StatusOK)
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if r.Method != http.MethodHead {
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_, _ = w.Write(index)
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}
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})
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}
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