feat: 移动端功能优化 (#132)

* feat: 移动端双击返回顶部

* feat: 深色模式下的底色

* feat: 移动端标题返回顶部和返回底部

src/views/chat/layout/header/index.vue

@@ -1,5 +1,5 @@
 <script lang="ts" setup>
-import { computed } from 'vue'
+import { computed, nextTick } from 'vue'
 import { SvgIcon } from '@/components/common'
 import { useAppStore, useChatStore } from '@/store'
 
@@ -7,25 +7,48 @@ const appStore = useAppStore()
 const chatStore = useChatStore()
 
 const collapsed = computed(() => appStore.siderCollapsed)
-
-function handleAdd() {
-  chatStore.addHistory({ title: 'New Chat', uuid: Date.now(), isEdit: false })
-}
+const currentChatHistory = computed(() => chatStore.getChatHistoryByCurrentActive)
 
 function handleUpdateCollapsed() {
   appStore.setSiderCollapsed(!collapsed.value)
 }
+
+function onScrollToTop() {
+  const scrollRef = document.querySelector('#scrollRef')
+  if (scrollRef)
+    nextTick(() => scrollRef.scrollTop = 0)
+}
+
+function onScrollToBottom() {
+  const scrollRef = document.querySelector('#scrollRef')
+  if (scrollRef)
+    nextTick(() => scrollRef.scrollTop = scrollRef.scrollHeight)
+}
 </script>
 
 <template>
-  <header class="fixed top-0 left-0 right-0 z-30 border-b dark:border-neutral-800 bg-white/80 dark:bg-black/20 backdrop-blur">
+  <header
+    class="fixed top-0 left-0 right-0 z-30 border-b dark:border-neutral-800 bg-white/80 dark:bg-black/20 backdrop-blur"
+  >
     <div class="relative flex items-center justify-between h-14">
-      <button class="flex items-center justify-center w-11 h-11" @click="handleUpdateCollapsed">
+      <button
+        class="flex items-center justify-center w-11 h-11"
+        @click="handleUpdateCollapsed"
+      >
         <SvgIcon v-if="collapsed" class="text-2xl" icon="ri:align-justify" />
         <SvgIcon v-else class="text-2xl" icon="ri:align-right" />
       </button>
-      <button class="flex items-center justify-center w-11 h-11" @click="handleAdd">
-        <SvgIcon class="text-2xl" icon="ri:add-fill" />
+      <h1
+        class="flex-1 px-4 overflow-hidden text-center cursor-pointer select-none text-ellipsis whitespace-nowrap"
+        @dblclick="onScrollToTop"
+      >
+        {{ currentChatHistory?.title ?? '' }}
+      </h1>
+      <button
+        class="flex items-center justify-center w-11 h-11"
+        @click="onScrollToBottom"
+      >
+        <SvgIcon class="text-2xl" icon="ri:arrow-down-s-line" />
       </button>
     </div>
   </header>