add services and htmx middleware

pkg/web/handler/context.go

@@ -0,0 +1,42 @@
+package handler
+
+import (
+	"context"
+	"net/http"
+
+	"github.com/LazyBachelor/LazyPM/internal/service"
+	"github.com/donseba/go-htmx"
+)
+
+type contextKey string
+
+const (
+	servicesKey contextKey = "services"
+	htmxKey     contextKey = "htmx"
+)
+
+func ServicesMiddleware(svc *service.Services) func(http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			ctx := context.WithValue(r.Context(), servicesKey, svc)
+			next.ServeHTTP(w, r.WithContext(ctx))
+		})
+	}
+}
+
+func HTMXMiddleware(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		htmxInstance := htmx.New()
+		handler := htmxInstance.NewHandler(w, r)
+		ctx := context.WithValue(r.Context(), htmxKey, handler)
+		next.ServeHTTP(w, r.WithContext(ctx))
+	})
+}
+
+func Services(r *http.Request) *service.Services {
+	return r.Context().Value(servicesKey).(*service.Services)
+}
+
+func HTMX(r *http.Request) *htmx.Handler {
+	return r.Context().Value(htmxKey).(*htmx.Handler)
+}