Created Turnpike, event attendee and volunteer management

Built after prototype, Traverse, an attendee and volunteer list
maintainer.

handle_event.go

@@ -0,0 +1,37 @@
+package main
+
+import (
+	"encoding/json"
+	"net/http"
+)
+
+func (app *App) handleGetEvent(w http.ResponseWriter, r *http.Request) {
+	event, err := app.getEvent()
+	if err != nil {
+		writeError(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	if event == nil {
+		writeJSON(w, map[string]any{})
+		return
+	}
+	writeJSON(w, event)
+}
+
+func (app *App) handleUpdateEvent(w http.ResponseWriter, r *http.Request) {
+	var e Event
+	if err := json.NewDecoder(r.Body).Decode(&e); err != nil {
+		writeError(w, "invalid request", http.StatusBadRequest)
+		return
+	}
+	if e.Name == "" || e.StartDate == "" || e.EndDate == "" {
+		writeError(w, "name, start_date, and end_date are required", http.StatusBadRequest)
+		return
+	}
+	if err := app.upsertEvent(e); err != nil {
+		writeError(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	event, _ := app.getEvent()
+	writeJSON(w, event)
+}