From bc061d3086e5f7ee7a9b02708646383ab9466409 Mon Sep 17 00:00:00 2001
From: Ken Kunz <kennethkunz@gmail.com>
Date: Tue, 19 Sep 2023 12:51:01 -0500
Subject: [PATCH] display strategy error traceback when available

---
 .../(nav)/logs/LogEntriesList.svelte          |  6 +--
 .../[strategy]/(nav)/logs/LogEntry.svelte     | 39 ++++++++++++++++---
 2 files changed, 37 insertions(+), 8 deletions(-)

diff --git a/src/routes/strategies/[strategy]/(nav)/logs/LogEntriesList.svelte b/src/routes/strategies/[strategy]/(nav)/logs/LogEntriesList.svelte
index 45f6499b4..3253a0a35 100644
--- a/src/routes/strategies/[strategy]/(nav)/logs/LogEntriesList.svelte
+++ b/src/routes/strategies/[strategy]/(nav)/logs/LogEntriesList.svelte
@@ -10,9 +10,9 @@ Display log messages as a scrollable panel
 </script>
 
 <div class="log-panel terminal-viewport">
-	<!-- reverse mutates the array, so we need to call it on a copy -->
-	{#each [...logs].reverse() as { timestamp, level, message }}
-		<LogEntry {timestamp} {level} {message} />
+	<!-- `reverse()` mutates the original array, so we need to call it on a copy -->
+	{#each [...logs].reverse() as { timestamp, level, message, formatted_data }}
+		<LogEntry {timestamp} {level} {message} {formatted_data} />
 	{/each}
 </div>
 
diff --git a/src/routes/strategies/[strategy]/(nav)/logs/LogEntry.svelte b/src/routes/strategies/[strategy]/(nav)/logs/LogEntry.svelte
index d223a82fb..7d568e79a 100644
--- a/src/routes/strategies/[strategy]/(nav)/logs/LogEntry.svelte
+++ b/src/routes/strategies/[strategy]/(nav)/logs/LogEntry.svelte
@@ -4,13 +4,23 @@
 	export let timestamp: number;
 	export let level: 'info' | 'trade' | 'warning' | 'error' | 'critical';
 	export let message: string;
+	export let formatted_data: Maybe<string[]> = undefined;
 </script>
 
 <div class="log-entry level--{level}">
 	<Timestamp date={timestamp} withSeconds />
-	<span class="message">
+	<div class="message">
 		{message}
-	</span>
+		{#if formatted_data?.length}
+			<details class="traceback">
+				<summary>
+					{formatted_data[0].trimEnd()}
+					<span class="num-lines">({formatted_data.length - 1} lines)</span>
+				</summary>
+				{formatted_data.slice(1).join('')}
+			</details>
+		{/if}
+	</div>
 </div>
 
 <style lang="postcss">
@@ -30,15 +40,34 @@
 		}
 
 		.message {
-			/* display: inline-flex; */
-			overflow-x: auto;
-			white-space: pre-line;
 			font: var(--f-mono-xs-regular);
+			letter-spacing: var(--f-mono-xs-spacing, normal);
+			white-space: pre-wrap;
+
+			details {
+				margin-top: 1em;
+
+				> summary {
+					font-weight: bold;
+					cursor: pointer;
+
+					.num-lines {
+						font-weight: normal;
+					}
+				}
+
+				&[open] > summary {
+					.num-lines {
+						display: none;
+					}
+				}
+			}
 		}
 
 		:global time {
 			display: flex;
 			font: var(--f-mono-sm-regular);
+			letter-spacing: var(--f-mono-sm-spacing, normal);
 			flex-direction: column;
 			color: var(--c-text-ultra-light);