use go static assets embedder

shift to use new static go assets embedded

Co-authored-by:     Victor <ViRb3@users.noreply.github.com>

.github/workflows/go.yml

@@ -7,10 +7,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
 
-    - name: Set up Go 1.13
+    - name: Set up Go 1.17.3
       uses: actions/setup-go@v1
       with:
-        go-version: 1.13
+        go-version: 1.17.3
       id: go
 
     - name: Check out code into the Go module directory

.gitignore

@@ -4,7 +4,6 @@ gossa-linux-arm
 gossa-linux-arm64
 gossa-mac
 gossa-windows.exe
-gossa_test.go
 build-all
 
 .vscode

Makefile

@@ -2,11 +2,8 @@ FLAGS := -ldflags "-s -w"
 NOCGO := CGO_ENABLED=0
 
 build:
-	cp src/gossa.go gossa.go
-	make -C gossa-ui/
 	go vet && go fmt
 	${NOCGO} go build ${FLAGS} -o gossa
-	rm gossa.go
 
 install:
 	sudo cp gossa /usr/local/bin
@@ -22,9 +19,7 @@ run-extra:
 
 test:
 	make build
-	rm -rf gossa_test.go
 	-@cd test-fixture && ln -s ../support .; true
-	cp src/gossa_test.go .
 
 	-@killall gossa; true
 	-make run &
@@ -41,30 +36,25 @@ test:
 	killall gossa
 
 watch:
-	ls src/* gossa-ui/* | entr -rc make build run
+	ls gossa.go gossa_test.go gossa-ui/* | entr -rc make build run
 
 watch-extra:
-	ls src/* gossa-ui/* | entr -rc make build run-extra
+	ls gossa.go gossa_test.go gossa-ui/* | entr -rc make build run-extra
 
 watch-ro:
-	ls src/* gossa-ui/* | entr -rc make build run-ro
+	ls gossa.go gossa_test.go gossa-ui/* | entr -rc make build run-ro
 
 watch-test:
-	ls src/* gossa-ui/* | entr -rc make test
+	ls gossa.go gossa_test.go gossa-ui/* | entr -rc make test
 
 build-all:
-	cp src/gossa.go gossa.go
-	make -C gossa-ui/
 	${NOCGO}  GOOS=linux    GOARCH=amd64  go build ${FLAGS} -o build-all/gossa-linux64
 	${NOCGO}  GOOS=linux    GOARCH=arm    go build ${FLAGS} -o build-all/gossa-linux-arm
 	${NOCGO}  GOOS=linux    GOARCH=arm64  go build ${FLAGS} -o build-all/gossa-linux-arm64
 	${NOCGO}  GOOS=darwin   GOARCH=amd64  go build ${FLAGS} -o build-all/gossa-mac
 	${NOCGO}  GOOS=windows  GOARCH=amd64  go build ${FLAGS} -o build-all/gossa-windows.exe
-	rm gossa.go
 
 clean:
-	-rm gossa.go
-	-rm gossa_test.go
 	-rm gossa
 	-rm gossa-linux64
 	-rm gossa-linux-arm

gossa.go

@@ -3,6 +3,8 @@ package main
 import (
 	"archive/zip"
 	"compress/gzip"
+	_ "embed"
+	"encoding/base64"
 	"encoding/json"
 	"errors"
 	"flag"
@@ -31,7 +33,19 @@ var ro = flag.Bool("ro", false, "read only mode (no upload, rename, move, etc...
 var initPath = "."
 
 var fs http.Handler
-var page, _ = template.New("pageTemplate").Parse(`template_will_be_here`)
+
+//go:embed gossa-ui/ui.tmpl
+var templateStr string
+var templateParsed *template.Template
+
+//go:embed gossa-ui/script.js
+var scriptJs string
+
+//go:embed gossa-ui/style.css
+var styleCss string
+
+//go:embed gossa-ui/favicon.svg
+var faviconSvg []byte
 
 type rowTemplate struct {
 	Name string
@@ -122,9 +136,9 @@ func replyList(w http.ResponseWriter, r *http.Request, fullPath string, path str
 		w.Header().Add("Content-Encoding", "gzip")
 		gz, _ := gzip.NewWriterLevel(w, gzip.BestSpeed) // BestSpeed is much faster than Default on a very unscientific local test, and only ~30% larger (compression remains still very effective, ~6x)
 		defer gz.Close()
-		page.Execute(gz, p)
+		templateParsed.Execute(gz, p)
 	} else {
-		page.Execute(w, p)
+		templateParsed.Execute(w, p)
 	}
 }
 
@@ -232,6 +246,12 @@ func main() {
 	initPath, err = filepath.Abs(initPath)
 	check(err)
 
+	templateStr = strings.Replace(templateStr, "css_will_be_here", styleCss, 1)
+	templateStr = strings.Replace(templateStr, "js_will_be_here", scriptJs, 1)
+	templateStr = strings.Replace(templateStr, "favicon_will_be_here", base64.StdEncoding.EncodeToString(faviconSvg), 2)
+	templateParsed, err = template.New("").Parse(templateStr)
+	check(err)
+
 	if !*ro {
 		http.HandleFunc(*extraPath+"rpc", rpc)
 		http.HandleFunc(*extraPath+"post", upload)