working on management of poll weights

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

frontend/src/routes/poll/Edit.svelte

@@ -43,9 +43,7 @@
 
 	async function patch_option(option, field, newVal){
 		let url = api(`poll/${id}/option/${option.id}`);
-		let data = {}
-		data[field] = newVal;
-		let res = await patch(url,data);
+		let res = await patch(url,{[field]: newVal});
 		if (res.ok) {
 			yikes();
 			const json = await res.json();
@@ -64,7 +62,14 @@
 		if (res.ok) {
 			yikes();
 			const json = await res.json();
-			console.log(json);
+			const weights = json.weights;
+			for (let weight of Object.keys(data)){
+				let desc = data[weight];
+				console.log(weight, desc);
+				if (desc) {
+					poll.weights[weight] = desc;
+				} else delete poll.weights[weight]; // TODO: this corrupts the display of the following element!
+			}
 			return true;
 		}
 		error(res);
@@ -153,7 +158,7 @@
 						<input type="number" value={weight} />
 					</td>
 					<td>
-						<LineEditor value={descr} onSet={desc => patch_weight({weight: desc})} />
+						<LineEditor editable={true} value={descr} onSet={desc => patch_weight({[weight]: desc})} />
 					</td>
 				</tr>
 			{/each}

poll/src/main/java/de/srsoftware/umbrella/poll/PollModule.java

@@ -137,8 +137,15 @@ public class PollModule extends BaseHandler implements PollService {
 	}
 
 	private boolean patchWeights(HttpExchange ex, Poll poll) throws IOException {
-		// TODO
-		return notFound(ex);
+		var json = json(ex);
+		for (var key : json.keySet()) try {
+			var weight = Integer.parseInt(key);
+			if (!(json.get(key) instanceof String description)) throw invalidField(Field.DESCRIPTION,Text.STRING);
+			poll.setWeight(weight,description);
+		} catch (NumberFormatException nfe) {
+			throw invalidField(Text.WEIGHT,Text.NUMBER);
+		}
+		return sendContent(ex,pollDb.save(poll));
 	}
 
 	private boolean patchPollOptions(HttpExchange ex, Path path, Poll poll) throws IOException {

poll/src/main/java/de/srsoftware/umbrella/poll/SqliteDb.java

@@ -112,7 +112,7 @@ public class SqliteDb extends BaseDb implements PollDb {
 
 	private void dropWeight(Poll poll, int weight){
 		try {
-			delete().from(TABLE_WEIGHTS).where(POLL_ID, equal(poll.id())).where(ID, equal(weight)).execute(db);
+			delete().from(TABLE_WEIGHTS).where(POLL_ID, equal(poll.id())).where(WEIGHT, equal(weight)).execute(db);
 			poll.weights().remove(weight);
 		} catch (SQLException e){
 			throw failedToDropObject(Text.WEIGHT);