Support noWatermark config

data/config.html

@@ -63,6 +63,23 @@
      </div>
    </form>
 
+   <form class="">
+     <div class="form-row align-items-center config-item" data-key="nowatermark">
+       <div class="col-sm-5 my-1">
+         <span>Do not watermark images</span>
+       </div>
+       <div class="col-sm-4 my-1">
+         <div class="custom-control custom-switch">
+           <input type="checkbox" class="custom-control-input rest-field rest-field-boolean" id="customSwitch1">
+           <label class="custom-control-label" for="customSwitch1"><span style="display: none;">😭</span></label>
+         </div>
+       </div>
+       <div class="col-auto my-1">
+         <button type="submit" class="btn btn-primary">update</button>
+       </div>
+     </div>
+   </form>
+
    <p class="lead">
      <a href="#" class="btn btn-lg btn-secondary">Learn more</a>
    </p>
@@ -78,7 +95,13 @@ $(document).ready(function() {
 
     $.ajax({ method: 'get', url: '/rest/config/'+key})
      .done(function(data) {
-       $(".config-item[data-key='"+key+"']").find('.rest-field').val(data.Value);
+       var this_el = $(".config-item[data-key='"+key+"']").find('.rest-field');
+       if (this_el.hasClass('rest-field-boolean')) {
+         this_el.prop('checked', data.Value);
+       }
+       else {
+         this_el.val(data.Value);
+       }
      });
     });
 
@@ -86,6 +109,9 @@ $(document).ready(function() {
   $('.config-item button').on('click', function(e,f) {
     key = $(this).parents('.config-item').data('key');
     val = $(this).parents('.config-item').find('.rest-field').val();
+    if ($(this).parents('.config-item').find('.rest-field-boolean')) {
+      val = $(this).parents('.config-item').find('.rest-field').prop('checked') ? 1 : 0;
+    }
     $.post('/rest/config/'+key, { value: val })
      .done(function(d) {
        if (d.Success) {

web/server.go

@@ -25,6 +25,11 @@ type valueStringResponse struct {
 	Value   string `json: 'value'`
 }
 
+type valueBooleanResponse struct {
+	Success bool   `json: 'success'`
+	Value   bool   `json: 'value'`
+}
+
 type errorResponse struct {
 	Success bool   `json: 'success'`
 	Error   string `json: 'error'`
@@ -159,6 +164,43 @@ func getSetWatch(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
+func getSetNoWatermark(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json")
+
+	if r.Method == "GET" {
+		getResponse := valueBooleanResponse{Success: true, Value: config.Config.NoWatermark}
+
+		// I can't see any way this will fail
+		js, _ := json.Marshal(getResponse)
+		w.Write(js)
+	} else if r.Method == "POST" {
+		err := r.ParseForm()
+		if err != nil {
+			log.Fatal(err)
+		}
+
+    v := r.PostForm.Get("value")
+
+		if v != "0" && v != "1" {
+     	response := errorResponse{Success: false, Error: fmt.Sprintf("Bad value for nowatermark: %v", err)}
+		 	js, _ := json.Marshal(response)
+		 	w.Write(js)
+		 	return
+		}
+
+		if v == "0" {
+			config.Config.NoWatermark = false
+		} else {
+			config.Config.NoWatermark = true
+		}
+    postResponse := valueBooleanResponse{Success: true, Value: config.Config.NoWatermark}
+
+		js, _ := json.Marshal(postResponse)
+		w.Write(js)
+	}
+}
+
+
 func getSetDirectory(w http.ResponseWriter, r *http.Request) {
 	log.Print("ok")
 	w.Header().Set("Content-Type", "application/json")
@@ -205,6 +247,7 @@ func StartWebServer() {
 	http.HandleFunc("/rest/config/webhook", getSetWebhook)
 	http.HandleFunc("/rest/config/username", getSetUsername)
 	http.HandleFunc("/rest/config/watch", getSetWatch)
+	http.HandleFunc("/rest/config/nowatermark", getSetNoWatermark)
 	http.HandleFunc("/rest/config/directory", getSetDirectory)
 
 	log.Print("Starting web server on http://localhost:9090")