frontend: react+mui (#3004)

* mui v5 wip

* wip

* wip

* wip

* use compressor for all controlplane endpoints

* wip

* wip

* add deps

* fix authenticate URL

* fix test

* fix test

* fix build

* maybe fix build

* fix integration test

* remove image asset test

* add yarn.lock

ui/embed.go

@@ -0,0 +1,93 @@
+// Package ui contains the user info dashboard ui.
+package ui
+
+import (
+	"bytes"
+	"embed"
+	"encoding/json"
+	"fmt"
+	"io"
+	"io/fs"
+	"net/http"
+	"os"
+	"path/filepath"
+	"time"
+
+	"github.com/pomerium/csrf"
+)
+
+var (
+	//go:embed dist/*
+	uiFS embed.FS
+)
+
+// ServeFile serves a file.
+func ServeFile(w http.ResponseWriter, r *http.Request, filePath string) error {
+	f, etag, err := openLocalOrEmbeddedFile(filepath.Join("dist", filePath))
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	w.Header().Set("ETag", `"`+etag+`"`)
+	http.ServeContent(w, r, filepath.Base(filePath), time.Time{}, f.(io.ReadSeeker))
+	return nil
+}
+
+// ServePage serves the index.html page.
+func ServePage(w http.ResponseWriter, r *http.Request, page string, data map[string]interface{}) error {
+	if data == nil {
+		data = make(map[string]interface{})
+	}
+	data["csrfToken"] = csrf.Token(r)
+	data["page"] = page
+
+	jsonData, err := json.Marshal(data)
+	if err != nil {
+		return err
+	}
+
+	f, _, err := openLocalOrEmbeddedFile("dist/index.html")
+	if err != nil {
+		return err
+	}
+	bs, err := io.ReadAll(f)
+	_ = f.Close()
+	if err != nil {
+		return err
+	}
+
+	bs = bytes.Replace(bs,
+		[]byte("window.POMERIUM_DATA = {}"),
+		append([]byte("window.POMERIUM_DATA = "), jsonData...),
+		1)
+
+	http.ServeContent(w, r, "index.html", time.Now(), bytes.NewReader(bs))
+	return nil
+}
+
+var startTime = time.Now()
+
+func openLocalOrEmbeddedFile(name string) (f fs.File, etag string, err error) {
+	f, err = os.Open(filepath.Join("ui", name))
+	if os.IsNotExist(err) {
+		f, err = uiFS.Open(name)
+	}
+	if err != nil {
+		return nil, "", err
+	}
+
+	fi, err := f.Stat()
+	if err != nil {
+		_ = f.Close()
+		return nil, "", err
+	}
+
+	modTime := fi.ModTime()
+	if modTime.IsZero() {
+		modTime = startTime
+	}
+	etag = fmt.Sprintf("%x", modTime.UnixNano())
+
+	return f, etag, nil
+}