Adding button to cache content

Adding server-side support for disabling manifest exports

src/handlers.go

@@ -313,6 +313,10 @@ func (ctx *Instance) dehydrateHandler(w http.ResponseWriter, req *http.Request)
 }
 
 func (ctx *Instance) manifestHandler(w http.ResponseWriter, req *http.Request) {
+	if (! ctx.Runtime.export_manifest) {
+		http.Error(w, "Endpoint disabled", http.StatusForbidden)
+		return
+	}
 	manifest := make([]string, 0)
 	manifest = append(manifest, "puzzles.json")
 	manifest = append(manifest, "points.json")

src/instance.go

@@ -15,6 +15,10 @@ import (
 	"time"
 )
 
+type RuntimeConfig struct {
+	export_manifest bool
+}
+
 type Instance struct {
 	Base            string
 	MothballDir     string
@@ -22,6 +26,8 @@ type Instance struct {
 	ThemeDir        string
 	AttemptInterval time.Duration
 
+	Runtime		RuntimeConfig
+
 	categories       map[string]*Mothball
 	update           chan bool
 	jPuzzleList      []byte

src/maintenance.go

@@ -124,6 +124,9 @@ func (ctx *Instance) tidy() {
 	// Do they want to reset everything?
 	ctx.MaybeInitialize()
 
+	// Check set config
+	ctx.UpdateConfig()
+
 	// Refresh all current categories
 	for categoryName, mb := range ctx.categories {
 		if err := mb.Refresh(); err != nil {
@@ -286,6 +289,18 @@ func (ctx *Instance) isEnabled() bool {
 	return true
 }
 
+func (ctx *Instance) UpdateConfig() {
+	// Handle export manifest
+	if _, err := os.Stat(ctx.StatePath("export_manifest")); err == nil {
+		log.Print("Enabling manifest export")
+		ctx.Runtime.export_manifest = true
+	} else {
+		log.Print("Disabling manifest export")
+		ctx.Runtime.export_manifest = false
+	}
+
+}
+
 // maintenance is the goroutine that runs a periodic maintenance task
 func (ctx *Instance) Maintenance(maintenanceInterval time.Duration) {
 	for {