Backend: working REST API.

backend/core/file.go

@@ -10,11 +10,13 @@ import (
 )
 
 type PictureData struct {
-	name  string
+	Name  string    `json:"name"`
-	date  time.Time
+	Date  time.Time `json:"date"`
-	album string
+	Album string    `json:"album"`
 }
 
+var picd []PictureData
+
 func listFiles(path string, actualdir string, picd []PictureData) []PictureData {
 	entries, err := os.ReadDir(path)
 	if err != nil {
@@ -51,9 +53,9 @@ func isPicture(s string) bool {
 func getFileInfo(info fs.FileInfo, picd []PictureData, actualdir string) []PictureData {
 	if isPicture(info.Name()) {
 		picd = append(picd, PictureData{
-			name:  info.Name(),
+			Name:  info.Name(),
-			date:  info.ModTime(),
+			Date:  info.ModTime(),
-			album: actualdir,
+			Album: actualdir,
 		})
 		util.Logformatrn(util.INFO, "Reading %d files...", len(picd))
 	}
@@ -61,16 +63,19 @@ func getFileInfo(info fs.FileInfo, picd []PictureData, actualdir string) []Pictu
 	return picd
 }
 
-func ListFiles(path string) ([]PictureData, error) {
+func ListFiles(path string) error {
-	var picd []PictureData
 	start := time.Now()
 	picd = listFiles(path, "", picd)
 	if len(picd) == 0 {
-		return nil, errors.New("ListFiles(): Could not gather any file")
+		return errors.New("ListFiles(): Could not gather any file")
 	} else {
 		elapsed := time.Since(start)
 		print("\n")
 		util.Logformat(util.CORRECT, "Gathered %d files in %dms.\n", len(picd), elapsed.Milliseconds())
-		return picd, nil
+		return nil
 	}
 }
+
+func GetPictureData() []PictureData {
+	return picd
+}

backend/main.go

@@ -26,7 +26,7 @@ func main() {
 
 	// Reading files
 	util.Logformat(util.INFO, "Reading folder '%s'\n", cfg.PhotoPath)
-	_, err = core.ListFiles(cfg.PhotoPath)
+	err = core.ListFiles(cfg.PhotoPath)
 	if err != nil {
 		util.Logformat(util.ERROR, "%s\n", err.Error())
 		os.Exit(3)

backend/server/pictures.go

@@ -1,16 +1,16 @@
 package server
 
 import (
+	"backend/core"
 	"backend/util"
 	"net/http"
 )
 
 func getphoto(w http.ResponseWriter, r *http.Request) {
-	idStr := r.URL.Query().Get("id")
+	if r.Method != "GET" {
-	if idStr == "" {
+		util.Logformat(util.ERROR, "%s: Only GET is accepted (%s received)", util.GetFunctionName(), r.Method)
-		util.Logformat(util.ERROR, "%s: Missing 'id' parameter.", util.GetFunctionName())
+		http.Error(w, "Only GET method is accepted", http.StatusBadRequest)
-		http.Error(w, "Missing or invalid parameters : id", http.StatusBadRequest)
 	} else {
-		sendResponse(w, 0)
+		sendResponse(w, core.GetPictureData())
 	}
 }

backend/server/server.go

@@ -9,7 +9,7 @@ import (
 
 func Start(port int64) {
 	// Creating endpoints
-	http.HandleFunc("/getphoto", wrapHeader(getphoto))
+	http.HandleFunc("/photo", wrapHeader(getphoto))
 
 	util.Logformat(util.INFO, "Starting server on port %d...\n", port)
 	if err := http.ListenAndServe(":"+strconv.FormatInt(port, 10), nil); err != nil {