adding sums

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

frontend/src/routes/accounting/account.svelte

@@ -13,6 +13,19 @@
 
 	let sums         = {};
 
+	function calcSums(){
+		sums[0]      = 0;
+		for (let user of Object.values(users)) sums[user.id] = 0;
+		for (let transaction of transactions) {
+			for (let user of Object.values(users)){
+				if (user.id == transaction.destination.id) sums[user.id] += transaction.amount;
+				if (user.id == transaction.source.id) sums[user.id] -= transaction.amount;
+			}
+			if (!transaction.destination.id) sums[0] += transaction.amount;
+			if (!transaction.source.id)      sums[0] -= transaction.amount;
+		}
+	}
+
 	async function load(){
 		let url = api(`accounting/${id}`);
 		let res = await get(url);
@@ -22,6 +35,7 @@
 			transactions = json.transactions;
 			users        = json.user_list;
 			account      = json.account;
+			calcSums();
 		} else error(res);
 	}
 
@@ -31,6 +45,11 @@
 
 	onMount(load);
 </script>
+
+<style>
+	.amount{ text-align: right }
+</style>
+
 {#if account}
 <fieldset>
 	<legend>{account.name}</legend>
@@ -50,24 +69,20 @@
 			<tr>
 				<td>{transaction.date}</td>
 				{#each Object.entries(users) as [id,user]}
-				<td>
+				<td class="amount">
 				{#if id == transaction.source.id}
-				{sums[id] = -transaction.amount + (sums[id]?sums[id]:0)}
-				{-transaction.amount} {account.currency}
+				{(-transaction.amount).toFixed(2)}&nbsp;{account.currency}
 				{/if}
 				{#if id == transaction.destination.id}
-				{sums[id] = transaction.amount + (sums[id]?sums[id]:0)}
-				{transaction.amount} {account.currency}
+				{(+transaction.amount).toFixed(2)}&nbsp;{account.currency}
 				{/if}
 				</td>
 				{/each}
 				<td>
 				{#if !transaction.source.id}
-				{sums[0] = -transaction.amount + (sums[0]?sums[0]:0)}
 				← {transaction.source.value}
 				{/if}
 				{#if !transaction.destination.id}
-				{sums[0] = transaction.amount + (sums[0]?sums[0]:0)}
 				→ {transaction.destination.value}
 				{/if}
 				</td>
@@ -80,14 +95,14 @@
 					{t('sums')}
 				</td>
 				{#each Object.entries(users) as [id,user]}
-				<th>
+				<th class="amount">
 					{user.name}<br/>
-					{sums[id]} {account.currency}
+					{sums[id].toFixed(2)}&nbsp;{account.currency}
 				</th>
 				{/each}
-				<td>
+				<td class="amount">
 					<br/>
-					{sums[0]} {account.currency}
+					{sums[0].toFixed(2)}&nbsp;{account.currency}
 				</td>
 			</tr>
 		</tbody>