feat: apply color scheme to charts

app/components/PackageDownloadAnalytics.vue

@@ -16,6 +16,40 @@ const {
   createdIso: string | null
 }>()
 
+const { accentColors, selectedAccentColor } = useAccentColor()
+const colorMode = useColorMode()
+
+const resolvedMode = ref<'light' | 'dark'>('light')
+
+onMounted(() => {
+  resolvedMode.value = colorMode.value === 'dark' ? 'dark' : 'light'
+})
+
+watch(
+  () => colorMode.value,
+  value => {
+    resolvedMode.value = value === 'dark' ? 'dark' : 'light'
+  },
+  { flush: 'sync' },
+)
+
+const isDarkMode = computed(() => resolvedMode.value === 'dark')
+
+// oklh or css variables are not supported by vue-data-ui (for now)
+
+const accentColorValueById = computed<Record<string, string>>(() => {
+  const map: Record<string, string> = {}
+  for (const item of accentColors) {
+    map[item.id] = item.value
+  }
+  return map
+})
+
+const accent = computed(() => {
+  const id = selectedAccentColor.value
+  return id ? (oklchToHex(accentColorValueById.value[id]!) ?? '#8A8A8A') : '#8A8A8A'
+})
+
 type ChartTimeGranularity = 'daily' | 'weekly' | 'monthly' | 'yearly'
 type EvolutionData =
   | DailyDownloadPoint[]
@@ -81,7 +115,7 @@ function formatXyDataset(
           name: packageName,
           type: 'line',
           series: dataset.map(d => d.downloads),
-          color: '#8A8A8A',
+          color: accent.value,
         },
       ],
       dates: dataset.map(d => `${d.weekStart}\nto ${d.weekEnd}`),
@@ -94,7 +128,7 @@ function formatXyDataset(
           name: packageName,
           type: 'line',
           series: dataset.map(d => d.downloads),
-          color: '#8A8A8A',
+          color: accent.value,
         },
       ],
       dates: dataset.map(d => d.day),
@@ -107,7 +141,7 @@ function formatXyDataset(
           name: packageName,
           type: 'line',
           series: dataset.map(d => d.downloads),
-          color: '#8A8A8A',
+          color: accent.value,
         },
       ],
       dates: dataset.map(d => d.month),
@@ -120,7 +154,7 @@ function formatXyDataset(
           name: packageName,
           type: 'line',
           series: dataset.map(d => d.downloads),
-          color: '#8A8A8A',
+          color: accent.value,
         },
       ],
       dates: dataset.map(d => d.year),
@@ -381,7 +415,7 @@ const chartData = computed<{ dataset: VueUiXyDatasetItem[] | null; dates: string
 const formatter = ({ value }: { value: number }) => formatCompactNumber(value, { decimals: 1 })
 
 const config = computed(() => ({
-  theme: 'dark',
+  theme: isDarkMode.value ? 'dark' : 'default',
   chart: {
     userOptions: {
       buttons: {
@@ -392,8 +426,9 @@ const config = computed(() => ({
         tooltip: false,
       },
     },
-    backgroundColor: '#0A0A0A', // current default dark mode theme,
+    backgroundColor: isDarkMode.value ? '#0A0A0A' : '#FFFFFF',
     grid: {
+      stroke: isDarkMode.value ? '#4A4A4A' : '#a3a3a3',
       labels: {
         axis: {
           yLabel: $t('package.downloads.y_axis_label', { granularity: selectedGranularity.value }),
@@ -419,7 +454,7 @@ const config = computed(() => ({
       show: false, // As long as a single package is displayed
     },
     tooltip: {
-      borderColor: '#2A2A2A',
+      borderColor: 'transparent',
       backdropFilter: false,
       backgroundColor: 'transparent',
       customFormat: ({
@@ -431,23 +466,25 @@ const config = computed(() => ({
       }) => {
         if (!datapoint) return ''
         const displayValue = formatter({ value: datapoint[0]?.value ?? 0 })
-        return `<div class="flex flex-col font-mono text-xs p-3 bg-[#0A0A0A]/10 backdrop-blur-md">
+        return `<div class="flex flex-col font-mono text-xs p-3 border border-border rounded-md bg-white/10 dark:bg-[#0A0A0A]/10 backdrop-blur-md">
           <span class="text-fg-subtle">${chartData.value?.dates[absoluteIndex]}</span>
           <span class="text-xl">${displayValue}</span>
         </div>
         `
       },
     },
     zoom: {
-      highlightColor: '#2A2A2A',
+      highlightColor: isDarkMode.value ? '#2A2A2A' : '#E1E5E8',
       minimap: {
         show: true,
         lineColor: '#FAFAFA',
-        selectedColorOpacity: 0.1,
-        frameColor: '#3A3A3A',
+        selectedColor: accent.value,
+        selectedColorOpacity: 0.06,
+        frameColor: isDarkMode.value ? '#3A3A3A' : '#a3a3a3',
       },
       preview: {
-        fill: '#FAFAFA05',
+        fill: accent.value + 10,
+        stroke: accent.value + 60,
         strokeWidth: 1,
         strokeDasharray: 3,
       },
@@ -471,12 +508,12 @@ const config = computed(() => ({
           </label>
 
           <div
-            class="flex items-center px-2.5 py-1.75 bg-bg-subtle border border-border rounded-md focus-within:(border-border-hover ring-2 ring-fg/50)"
+            class="flex items-center px-2.5 py-1.75 bg-bg-subtle border border-border rounded-md focus-within:(border-border-hover ring-2 ring-accent/30)"
           >
             <select
               id="granularity"
               v-model="selectedGranularity"
-              class="w-full bg-transparent font-mono text-sm text-fg outline-none"
+              class="w-full bg-transparent font-mono text-sm text-fg outline-none appearance-none"
             >
               <option value="daily">{{ $t('package.downloads.granularity_daily') }}</option>
               <option value="weekly">{{ $t('package.downloads.granularity_weekly') }}</option>
@@ -496,7 +533,7 @@ const config = computed(() => ({
               {{ $t('package.downloads.start_date') }}
             </label>
             <div
-              class="flex items-center gap-2 px-2.5 py-1.75 bg-bg-subtle border border-border rounded-md focus-within:(border-border-hover ring-2 ring-fg/50)"
+              class="flex items-center gap-2 px-2.5 py-1.75 bg-bg-subtle border border-border rounded-md focus-within:(border-border-hover ring-2 ring-accent/30)"
             >
               <span class="i-carbon-calendar w-4 h-4 text-fg-subtle shrink-0" aria-hidden="true" />
               <input
@@ -516,7 +553,7 @@ const config = computed(() => ({
               {{ $t('package.downloads.end_date') }}
             </label>
             <div
-              class="flex items-center gap-2 px-2.5 py-1.75 bg-bg-subtle border border-border rounded-md focus-within:(border-border-hover ring-2 ring-fg/50)"
+              class="flex items-center gap-2 px-2.5 py-1.75 bg-bg-subtle border border-border rounded-md focus-within:(border-border-hover ring-2 ring-accent/30)"
             >
               <span class="i-carbon-calendar w-4 h-4 text-fg-subtle shrink-0" aria-hidden="true" />
               <input
@@ -650,16 +687,17 @@ const config = computed(() => ({
 
 <style>
 .vue-ui-pen-and-paper-actions {
-  background: #1a1a1a !important;
+  background: var(--bg-elevated) !important;
 }
 
 .vue-ui-pen-and-paper-action {
-  background: #1a1a1a !important;
+  background: var(--bg-elevated) !important;
   border: none !important;
 }
 
 .vue-ui-pen-and-paper-action:hover {
-  background: #2a2a2a !important;
+  background: var(--bg-elevated) !important;
+  box-shadow: none !important;
 }
 
 .vue-data-ui-zoom {

app/components/PackageWeeklyDownloadStats.vue

@@ -13,6 +13,41 @@ const createdIso = computed(() => packument.value?.time?.created ?? null)
 
 const { fetchPackageDownloadEvolution } = useCharts()
 
+const { accentColors, selectedAccentColor } = useAccentColor()
+
+const colorMode = useColorMode()
+
+const resolvedMode = ref<'light' | 'dark'>('light')
+
+onMounted(() => {
+  resolvedMode.value = colorMode.value === 'dark' ? 'dark' : 'light'
+})
+
+watch(
+  () => colorMode.value,
+  value => {
+    resolvedMode.value = value === 'dark' ? 'dark' : 'light'
+  },
+  { flush: 'sync' },
+)
+
+const isDarkMode = computed(() => resolvedMode.value === 'dark')
+
+const accentColorValueById = computed<Record<string, string>>(() => {
+  const map: Record<string, string> = {}
+  for (const item of accentColors) {
+    map[item.id] = item.value
+  }
+  return map
+})
+
+const accent = computed(() => {
+  const id = selectedAccentColor.value
+  return id ? (oklchToHex(accentColorValueById.value[id]!) ?? '#8A8A8A') : '#8A8A8A'
+})
+
+const pulseColor = computed(() => (selectedAccentColor.value ? accent.value : '#8A8A8A'))
+
 const weeklyDownloads = ref<WeeklyDownloadPoint[]>([])
 
 async function loadWeeklyDownloads() {
@@ -51,52 +86,55 @@ const dataset = computed(() =>
 
 const lastDatapoint = computed(() => dataset.value.at(-1)?.period ?? '')
 
-const config = computed(() => ({
-  theme: 'dark',
-  style: {
-    backgroundColor: 'transparent',
-    animation: { show: false },
-    area: {
-      color: 'oklch(0.5243 0 0)', // css variable doesn't seem to work here
-      useGradient: false,
-      opacity: 10,
-    },
-    dataLabel: {
-      offsetX: -10,
-      fontSize: 28,
-      bold: false,
-      color: 'var(--fg)',
-    },
-    line: {
-      color: 'var(--fg-subtle)',
-      pulse: {
-        show: true,
-        loop: true, // runs only once if false
-        radius: 2,
-        color: 'var(--fg-muted)',
-        easing: 'ease-in-out',
-        trail: {
+// oklh or css variables are not supported by vue-data-ui (for now)
+const config = computed(() => {
+  return {
+    theme: 'dark',
+    style: {
+      backgroundColor: 'transparent',
+      animation: { show: false },
+      area: {
+        color: '#6A6A6A',
+        useGradient: false,
+        opacity: 10,
+      },
+      dataLabel: {
+        offsetX: -10,
+        fontSize: 28,
+        bold: false,
+        color: isDarkMode.value ? '#8a8a8a' : '#696969',
+      },
+      line: {
+        color: '#696969',
+        pulse: {
           show: true,
-          length: 6,
+          loop: true, // runs only once if false
+          radius: 2,
+          color: pulseColor.value,
+          easing: 'ease-in-out',
+          trail: {
+            show: true,
+            length: 6,
+          },
         },
       },
+      plot: {
+        radius: 6,
+        stroke: isDarkMode.value ? '#FAFAFA' : '#0A0A0A',
+      },
+      title: {
+        text: lastDatapoint.value,
+        fontSize: 12,
+        color: '#8a8a8a',
+        bold: false,
+      },
+      verticalIndicator: {
+        strokeDasharray: 0,
+        color: isDarkMode.value ? '#FAFAFA' : '#525252',
+      },
     },
-    plot: {
-      radius: 6,
-      stroke: 'var(--fg)',
-    },
-    title: {
-      text: lastDatapoint.value,
-      fontSize: 12,
-      color: 'var(--fg)',
-      bold: false,
-    },
-    verticalIndicator: {
-      strokeDasharray: 0,
-      color: 'var(--fg-muted)',
-    },
-  },
-}))
+  }
+})
 </script>
 
 <template>

app/utils/colors.ts

@@ -0,0 +1,45 @@
+// Vue Data UI does not support CSS vars nor OKLCH for now
+export function oklchToHex(color: string | undefined | null): string | undefined | null {
+  if (color == null) return color
+
+  const match = color.trim().match(/^oklch\(\s*([0-9.]+)\s+([0-9.]+)\s+([0-9.]+)\s*\)$/i)
+
+  if (!match) {
+    throw new Error('Invalid OKLCH color format')
+  }
+
+  const lightness = Number(match[1])
+  const chroma = Number(match[2])
+  const hue = Number(match[3])
+
+  const hRad = (hue * Math.PI) / 180
+
+  const a = chroma * Math.cos(hRad)
+  const b = chroma * Math.sin(hRad)
+
+  let l_ = lightness + 0.3963377774 * a + 0.2158037573 * b
+  let m_ = lightness - 0.1055613458 * a - 0.0638541728 * b
+  let s_ = lightness - 0.0894841775 * a - 1.291485548 * b
+
+  l_ = l_ ** 3
+  m_ = m_ ** 3
+  s_ = s_ ** 3
+
+  let r = 4.0767416621 * l_ - 3.3077115913 * m_ + 0.2309699292 * s_
+  let g = -1.2684380046 * l_ + 2.6097574011 * m_ - 0.3413193965 * s_
+  let bRgb = -0.0041960863 * l_ - 0.7034186147 * m_ + 1.707614701 * s_
+
+  const toSrgb = (value: number): number =>
+    value <= 0.0031308 ? 12.92 * value : 1.055 * Math.pow(value, 1 / 2.4) - 0.055
+
+  r = toSrgb(r)
+  g = toSrgb(g)
+  bRgb = toSrgb(bRgb)
+
+  const toHex = (value: number): string =>
+    Math.round(Math.min(Math.max(0, value), 1) * 255)
+      .toString(16)
+      .padStart(2, '0')
+
+  return `#${toHex(r)}${toHex(g)}${toHex(bRgb)}`
+}