server: refactor

1 files changed, 45 insertions, 0 deletions

diff --git a/server/target.go b/server/target.go
new file mode 100644
index 0000000..4c58f1d
--- /dev/null
+++ b/server/target.go
@@ -0,0 +1,45 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+	"strconv"
+	"sync"
+)
+
+type TargetHumidityHandler struct {
+	mu     sync.Mutex
+	target Humidity
+}
+
+func (h *TargetHumidityHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	log.Println(r.Method, r.URL)
+	switch r.Method {
+	case http.MethodGet:
+		h.get(w, r)
+	case http.MethodPost:
+		h.post(w, r)
+	default:
+		w.WriteHeader(http.StatusMethodNotAllowed)
+		fmt.Fprintf(w, "invalid method: '%s'", r.Method)
+	}
+}
+
+func (h *TargetHumidityHandler) get(w http.ResponseWriter, r *http.Request) {
+	h.mu.Lock()
+	defer h.mu.Unlock()
+	fmt.Fprintf(w, "%.2f", h.target)
+}
+
+func (h *TargetHumidityHandler) post(w http.ResponseWriter, r *http.Request) {
+	target, err := strconv.ParseFloat(r.URL.RawQuery, 32)
+	if err != nil {
+		badRequest(w, "invalid humidity: '%s'", r.URL.RawQuery)
+		return
+	}
+
+	h.mu.Lock()
+	defer h.mu.Unlock()
+	h.target = Humidity(target)
+}