refactor: migrate to nuxt compatibilityVersion: 4 (#3298)

app/components/user/UserSignIn.vue

@@ -0,0 +1,182 @@
+<script setup lang="ts">
+import Fuse from 'fuse.js'
+
+const input = ref<HTMLInputElement | undefined>()
+const knownServers = ref<string[]>([])
+const autocompleteIndex = ref(0)
+const autocompleteShow = ref(false)
+
+const { busy, error, displayError, server, oauth } = useSignIn(input)
+
+const fuse = shallowRef(new Fuse([] as string[]))
+
+const filteredServers = computed(() => {
+  if (!server.value)
+    return []
+
+  const results = fuse.value.search(server.value, { limit: 6 }).map(result => result.item)
+  if (results[0] === server.value)
+    return []
+
+  return results
+})
+
+function isValidUrl(str: string) {
+  try {
+    // eslint-disable-next-line no-new
+    new URL(str)
+    return true
+  }
+  catch {
+    return false
+  }
+}
+
+async function handleInput() {
+  const input = server.value.trim()
+  if (input.startsWith('https://'))
+    server.value = input.replace('https://', '')
+
+  if (input.length)
+    displayError.value = false
+
+  if (
+    isValidUrl(`https://${input}`)
+    && input.match(/^[a-z0-9-]+(\.[a-z0-9-]+)+(:\d+)?$/i)
+    // Do not hide the autocomplete if a result has an exact substring match on the input
+    && !filteredServers.value.some(s => s.includes(input))
+  ) {
+    autocompleteShow.value = false
+  }
+
+  else {
+    autocompleteShow.value = true
+  }
+}
+
+function toSelector(server: string) {
+  return server.replace(/[^\w-]/g, '-')
+}
+function move(delta: number) {
+  if (filteredServers.value.length === 0) {
+    autocompleteIndex.value = 0
+    return
+  }
+  autocompleteIndex.value = ((autocompleteIndex.value + delta) + filteredServers.value.length) % filteredServers.value.length
+  document.querySelector(`#${toSelector(filteredServers.value[autocompleteIndex.value])}`)?.scrollIntoView(false)
+}
+
+function onEnter(e: KeyboardEvent) {
+  if (autocompleteShow.value === true && filteredServers.value[autocompleteIndex.value]) {
+    server.value = filteredServers.value[autocompleteIndex.value]
+    e.preventDefault()
+    autocompleteShow.value = false
+  }
+}
+
+function escapeAutocomplete(evt: KeyboardEvent) {
+  if (!autocompleteShow.value)
+    return
+  autocompleteShow.value = false
+  evt.stopPropagation()
+}
+
+function select(index: number) {
+  server.value = filteredServers.value[index]
+}
+
+onMounted(async () => {
+  input?.value?.focus()
+  knownServers.value = await (globalThis.$fetch as any)('/api/list-servers')
+  fuse.value = new Fuse(knownServers.value, { shouldSort: true })
+})
+
+onClickOutside(input, () => {
+  autocompleteShow.value = false
+})
+</script>
+
+<template>
+  <form text-center justify-center items-center max-w-150 py6 flex="~ col gap-3" @submit.prevent="oauth">
+    <div flex="~ center" items-end mb2 gap-x-2>
+      <img :src="`/${''}logo.svg`" w-12 h-12 mxa height="48" width="48" :alt="$t('app_logo')" class="rtl-flip">
+      <div text-3xl>
+        {{ $t('action.sign_in') }}
+      </div>
+    </div>
+    <div>
+      {{ $t('user.server_address_label') }}
+    </div>
+    <div :class="error ? 'animate animate-shake-x animate-delay-100' : null">
+      <div
+        dir="ltr"
+        flex bg-gray:10 px4 py2 mxa rounded
+        border="~ base" items-center font-mono
+        focus:outline-none focus:ring="2 primary inset"
+        relative
+        :class="displayError ? 'border-red-600 dark:border-red-400' : null"
+      >
+        <span text-secondary-light me1>https://</span>
+
+        <input
+          ref="input"
+          v-model="server"
+          autocapitalize="off"
+          inputmode="url"
+          outline-none bg-transparent w-full max-w-50
+          spellcheck="false"
+          autocorrect="off"
+          autocomplete="off"
+          @input="handleInput"
+          @keydown.down="move(1)"
+          @keydown.up="move(-1)"
+          @keydown.enter="onEnter"
+          @keydown.esc.prevent="escapeAutocomplete"
+          @focus="autocompleteShow = true"
+        >
+        <div
+          v-if="autocompleteShow && filteredServers.length"
+          absolute left-6em right-0 top="100%"
+          bg-base rounded border="~ base"
+          z-10 shadow of-auto
+          overflow-y-auto
+          class="max-h-[8rem]"
+        >
+          <button
+            v-for="(name, idx) in filteredServers"
+            :id="toSelector(name)"
+            :key="name"
+            :value="name"
+            px-2 py1 font-mono w-full text-left
+            :class="autocompleteIndex === idx ? 'text-primary font-bold' : null"
+            @click="select(idx)"
+          >
+            {{ name }}
+          </button>
+        </div>
+      </div>
+      <div min-h-4>
+        <Transition css enter-active-class="animate animate-fade-in">
+          <p v-if="displayError" role="alert" p-0 m-0 text-xs text-red-600 dark:text-red-400>
+            {{ $t('error.sign_in_error') }}
+          </p>
+        </Transition>
+      </div>
+    </div>
+    <div text-secondary text-sm flex>
+      <div i-ri:lightbulb-line me-1 />
+      <span>
+        <i18n-t keypath="user.tip_no_account">
+          <NuxtLink href="https://joinmastodon.org/servers" target="_blank" external class="text-primary" hover="underline">{{ $t('user.tip_register_account') }}</NuxtLink>
+        </i18n-t>
+      </span>
+    </div>
+    <button flex="~ row" gap-x-2 items-center btn-solid mt2 :disabled="!server || busy">
+      <span v-if="busy" aria-hidden="true" block animate animate-spin preserve-3d class="rtl-flip">
+        <span block i-ri:loader-2-fill aria-hidden="true" />
+      </span>
+      <span v-else aria-hidden="true" block i-ri:login-circle-line class="rtl-flip" />
+      {{ $t('action.sign_in') }}
+    </button>
+  </form>
+</template>