fix: convert areachart to working barchart in trend-chart.svelte and fixed empty data issue (#930)

Co-authored-by: richarddkenneth <richard-kenneth@users.noreply.github.com>

apps/dashboard/src/lib/features/analytics/components/trend-chart.svelte

@@ -26,37 +26,80 @@
   const chartConfig = $derived({
     views: {
       label: $t('analytics.trend.views'),
-      color: 'var(--primary)'
+      color: 'var(--chart-4)'
     },
     enrollments: {
       label: $t('analytics.trend.enrollments'),
-      color: 'var(--chart-2, var(--primary))'
+      color: 'var(--chart-2)'
     }
   } satisfies ChartConfig);
 
-  const series = [
-    { key: 'views', value: 'views', label: 'Views', color: 'var(--color-views)' },
-    { key: 'enrollments', value: 'enrollments', label: 'Enrollments', color: 'var(--color-enrollments)' }
-  ];
+  const series = $derived([
+    {
+      key: 'views',
+      label: chartConfig.views.label,
+      color: chartConfig.views.color
+    },
+    {
+      key: 'enrollments',
+      label: chartConfig.enrollments.label,
+      color: chartConfig.enrollments.color
+    }
+  ]);
 
-  const hasData = $derived(
-    (data?.sparkline.length ?? 0) > 0 && data?.sparkline.some((r) => r.views > 0 || r.enrollments > 0)
+  let chartData = $derived(
+    data?.sparkline.map((d) => {
+      const [year, month, day] = d.date.split('-');
+      const date = new Date(Number(year), Number(month) - 1, Number(day));
+      return { ...d, date };
+    })
   );
+
+  const hasData = $derived((chartData?.length ?? 0) > 0 && chartData?.some((r) => r.views > 0 || r.enrollments > 0));
 </script>
 
 <AnalyticsPanelCard title={$t('analytics.trend.heading')} description={$t('analytics.trend.description')}>
   {#snippet children()}
-    {#if loading && !data}
+    {#if loading && !chartData}
       <div class="flex h-[280px] items-center justify-center">
         <Spinner class="ui:text-muted-foreground size-6" />
       </div>
-    {:else if browser && hasData && data}
+    {:else if browser && hasData && chartData}
       {#await loadChart() then C}
         <C.ChartContainer class="h-[280px] w-full" config={chartConfig}>
-          <C.AreaChart data={data.sparkline} x="date" axis="x" {series} />
+          <C.BarChart
+            data={chartData}
+            xScale={C.scaleBand().padding(0.25)}
+            x="date"
+            axis="x"
+            seriesLayout="group"
+            legend
+            {series}
+            props={{
+              xAxis: {
+                format: (d: Date) =>
+                  d.toLocaleDateString('en-US', {
+                    month: 'short',
+                    day: 'numeric'
+                  })
+              }
+            }}
+          >
+            {#snippet tooltip()}
+              <C.Tooltip
+                labelFormatter={(d: Date) =>
+                  d.toLocaleDateString('en-US', {
+                    weekday: 'long',
+                    year: 'numeric',
+                    month: 'long',
+                    day: 'numeric'
+                  })}
+              />
+            {/snippet}
+          </C.BarChart>
         </C.ChartContainer>
       {/await}
-    {:else if hasData && data}
+    {:else if hasData && chartData}
       <div class="flex h-[280px] items-center justify-center">
         <Spinner class="ui:text-muted-foreground size-6" />
       </div>

apps/dashboard/src/routes/(app)/org/[slug]/analytics/+page.svelte

@@ -1,5 +1,4 @@
 <script lang="ts">
-  import { onMount } from 'svelte';
   import { t } from '$lib/utils/functions/translations';
   import { currentOrg } from '$lib/utils/store/org';
   import * as Page from '@cio/ui/base/page';
@@ -15,9 +14,8 @@
     analyticsApi
   } from '$features/analytics';
 
-  onMount(() => {
-    const orgId = $currentOrg.id;
-    if (orgId) analyticsApi.ensureFetched(orgId);
+  $effect(() => {
+    analyticsApi.ensureFetched($currentOrg.id);
   });
 
   function handleRangeChange(days: 7 | 30 | 90) {

apps/dashboard/src/routes/(app)/org/[slug]/compliance/+page.svelte

@@ -1,5 +1,4 @@
 <script lang="ts">
-  import { onMount } from 'svelte';
   import { t } from '$lib/utils/functions/translations';
   import { currentOrg } from '$lib/utils/store/org';
   import * as Page from '@cio/ui/base/page';
@@ -10,9 +9,8 @@
   import { StatusTiles, CourseBreakdown, LearnersTable, complianceApi } from '$features/compliance';
   import type { ComplianceLearnerRow } from '$features/compliance/utils/types';
 
-  onMount(() => {
-    const orgId = $currentOrg.id;
-    if (orgId) complianceApi.ensureFetched(orgId);
+  $effect(() => {
+    complianceApi.ensureFetched($currentOrg.id);
   });
 
   function handleRefresh() {