145 lines
3.6 KiB
Vue
145 lines
3.6 KiB
Vue
<script setup lang="ts">
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import { computed, ref } from 'vue'
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import { Status, useEngine, useInfiniteQuery, useMutation, useQuery } from 'vue-sync-engine'
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import { PostEntity, UserEntity, postsInfinite, updatePostTitle, usersQuery, type Post, type User } from './demo.defs'
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import PostCard from './PostCard.vue'
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const engine = useEngine()
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const selectedUserId = ref<number | undefined>(undefined)
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const users = useQuery(usersQuery, () => undefined as void)
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const userList = computed(() =>
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(users.data.value?.ids ?? [])
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.map((id) => engine.mirror.getEntity<User>(UserEntity.name, id))
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.filter((u): u is User => !!u),
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)
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const posts = useInfiniteQuery(postsInfinite, () => ({ userId: selectedUserId.value }))
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const postIds = computed(() => posts.pages.value.flatMap((p) => p.ids))
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const postsByIds = computed(() =>
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postIds.value
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.map((id) => engine.mirror.getEntity<Post>(PostEntity.name, id))
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.filter((p): p is Post => !!p),
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)
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const editingId = ref<number | null>(null)
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const draft = ref('')
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const m = useMutation(updatePostTitle)
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function startEdit(id: number, title: string) {
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editingId.value = id
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draft.value = title
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}
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async function save() {
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if (editingId.value == null) return
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const id = editingId.value
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editingId.value = null
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try {
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await m.mutateAsync({ id, title: draft.value })
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} catch {}
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}
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</script>
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<template>
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<main class="app">
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<header>
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<h1>vue-sync-engine demo</h1>
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<p>JSONPlaceholder · IndexedDB cache · optimistic mutations · infinite scroll</p>
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</header>
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<aside class="users">
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<h2>Users <span v-if="users.isLoading.value">…</span></h2>
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<ul>
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<li>
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<button :class="{ active: selectedUserId === undefined }" @click="selectedUserId = undefined">
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All posts
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</button>
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</li>
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<li v-for="u in userList" :key="u.id">
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<button :class="{ active: selectedUserId === u.id }" @click="selectedUserId = u.id">
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{{ u.name }} <small>@{{ u.username }}</small>
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</button>
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</li>
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</ul>
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</aside>
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<section class="posts">
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<h2>Posts <span v-if="posts.isLoading.value">…</span></h2>
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<PostCard
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v-for="p in postsByIds"
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:key="p.id"
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:post="p"
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:editing="editingId === p.id"
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:draft="draft"
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@edit="startEdit(p.id, p.title)"
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@input="draft = $event"
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@save="save"
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@cancel="editingId = null"
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/>
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<button class="more" :disabled="posts.isLoading.value" @click="posts.fetchNextPage">
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{{ posts.isLoading.value ? 'Loading…' : 'Load more' }}
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</button>
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<p v-if="m.status.value === Status.Error" class="err">Mutation failed: {{ m.error.value?.message }}</p>
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</section>
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</main>
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</template>
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<style scoped>
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.app {
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max-width: 920px;
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margin: 0 auto;
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padding: 24px;
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font-family: system-ui, sans-serif;
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display: grid;
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grid-template-columns: 240px 1fr;
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gap: 24px;
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}
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header {
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grid-column: 1 / -1;
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}
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h1 { margin: 0; }
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h2 {
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margin-top: 0;
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font-size: 12px;
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text-transform: uppercase;
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letter-spacing: 0.08em;
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color: #666;
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}
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.users ul {
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list-style: none;
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padding: 0;
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margin: 0;
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display: flex;
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flex-direction: column;
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gap: 4px;
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}
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.users button {
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width: 100%;
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text-align: left;
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padding: 8px 10px;
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border: 1px solid #ddd;
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background: white;
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border-radius: 6px;
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cursor: pointer;
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font-size: 13px;
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}
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.users button.active {
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background: #111;
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color: white;
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border-color: #111;
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}
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.more {
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width: 100%;
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padding: 10px;
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border-radius: 6px;
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border: 1px dashed #ccc;
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background: #fafafa;
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cursor: pointer;
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}
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.err {
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color: #c00;
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font-size: 12px;
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}
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</style>
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