Vue

<script lang="ts" setup>
import { ref, onMounted, onUnmounted, watch } from 'vue'
import { MarkdownDocument } from '@comark/vue'
import type { ContentFile } from 'comark-content'
import { content, version } from './composables/useContent'

type Item = Awaited<ReturnType<typeof content.list>>[number]

const path = ref(window.location.pathname)
const items = ref<Item[]>([])
const page = ref<ContentFile | null>(null)
const pending = ref(true)
const error = ref<string | null>(null)

function navigate(e: MouseEvent, to: string) {
  e.preventDefault()
  if (to === path.value) return
  history.pushState({}, '', to)
  path.value = to
}

function syncPath() {
  path.value = window.location.pathname
}

onMounted(() => window.addEventListener('popstate', syncPath))
onUnmounted(() => window.removeEventListener('popstate', syncPath))

let token = 0
async function load() {
  const myToken = ++token
  pending.value = true
  error.value = null
  try {
    const [tr, list] = await Promise.all([content.get(path.value), content.list()])
    if (myToken !== token) return
    page.value = tr ?? null
    items.value = list
    if (!tr) error.value = 'Not found'
  } catch (err) {
    if (myToken !== token) return
    error.value = (err as Error).message
  } finally {
    if (myToken === token) pending.value = false
  }
}

watch([path, version], load, { immediate: true })
</script>

<template>
  <div class="layout">
    <aside>
      <h2>Pages</h2>
      <nav>
        <a
          v-for="item in items"
          :key="item.path"
          :href="item.path"
          :class="{ active: path === item.path }"
          @click="navigate($event, item.path)"
        >
          {{ item.data?.title ?? item.meta.stem }}
        </a>
      </nav>
    </aside>
    <main>
      <p v-if="pending">Loading…</p>
      <Suspense v-else-if="page">
        <MarkdownDocument :value="page" />
        <template #fallback><p>Rendering…</p></template>
      </Suspense>
      <p v-else>{{ error ?? 'Not found' }}</p>
    </main>
  </div>
</template>

<style>
:root {
  font-family: system-ui, sans-serif;
  color-scheme: light dark;
}
body {
  margin: 0;
}
.layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: 100vh;
}
aside {
  padding: 1.5rem 1rem;
  border-right: 1px solid #8884;
}
aside h2 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.6;
}
aside nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
aside a {
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}
aside a.active {
  background: #8882;
}
main {
  padding: 2rem 2.5rem;
  max-width: 70ch;
}
</style>