Initial commit: Open sourcing all of the Maple Open Technologies code.

cloud/maplefile-backend/internal/interface/http/middleware/url.go

@@ -0,0 +1,29 @@
+// codeberg.org/mapleopentech/monorepo/cloud/maplefile-backend/internal/interface/http/middleware/url.go
+package middleware
+
+import (
+	"context"
+	"net/http"
+	"strings"
+)
+
+// URLProcessorMiddleware Middleware will split the full URL path into slash-sperated parts and save to
+// the context to flow downstream in the app for this particular request.
+func (mid *middleware) URLProcessorMiddleware(fn http.HandlerFunc) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		// Split path into slash-separated parts, for example, path "/foo/bar"
+		// gives p==["foo", "bar"] and path "/" gives p==[""]. Our API starts with
+		// "/api", as a result we will start the array slice at "1".
+		p := strings.Split(r.URL.Path, "/")[1:]
+
+		// log.Println(p) // For debugging purposes only.
+
+		// Open our program's context based on the request and save the
+		// slash-seperated array from our URL path.
+		ctx := r.Context()
+		ctx = context.WithValue(ctx, "url_split", p)
+
+		// Flow to the next middleware.
+		fn(w, r.WithContext(ctx))
+	}
+}