From b764d2a10e4325f08f1b65cd0aa445add79e499e Mon Sep 17 00:00:00 2001
From: pengzhanbo <volodymyr@foxmail.com>
Date: Mon, 5 Feb 2024 15:40:57 +0800
Subject: [PATCH] =?UTF-8?q?perf:=20=E4=BC=98=E5=8C=96=E5=8D=9A=E5=AE=A2?=
 =?UTF-8?q?=E6=96=87=E7=AB=A0=E5=88=97=E8=A1=A8=E9=A1=B5=E5=88=86=E9=A1=B5?=
 =?UTF-8?q?=E7=BB=84=E4=BB=B6?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 theme/src/client/components/Pagination.vue | 103 +++++++++++++++++++++
 theme/src/client/components/PostList.vue   |  70 +++-----------
 theme/src/client/composables/blog.ts       |  50 +++++++++-
 3 files changed, 163 insertions(+), 60 deletions(-)
 create mode 100644 theme/src/client/components/Pagination.vue

diff --git a/theme/src/client/components/Pagination.vue b/theme/src/client/components/Pagination.vue
new file mode 100644
index 00000000..cc76ca4e
--- /dev/null
+++ b/theme/src/client/components/Pagination.vue
@@ -0,0 +1,103 @@
+<script setup lang="ts">
+import type { PlumeThemeBlog } from '../../shared/index.js'
+
+type NonFalseAndNullable<T> = T extends false | null | undefined ? never : T
+
+defineProps<{
+  pagination: NonFalseAndNullable<PlumeThemeBlog['pagination']>
+  page: number
+  totalPage: number
+  isFirstPage: boolean
+  isLastPage: boolean
+  pageRange: { value: number | string, more?: true }[]
+}>()
+const emit = defineEmits<{ change: [value: number] }>()
+</script>
+
+<template>
+  <div class="pagination">
+    <button
+      type="button"
+      class="btn prev"
+      :disabled="isFirstPage"
+      @click="() => emit('change', page - 1)"
+    >
+      {{ pagination?.prevPageText || 'Prev' }}
+    </button>
+    <div class="page-range">
+      <button
+        v-for="{ value, more } in pageRange"
+        :key="value"
+        class="btn"
+        :disabled="more"
+        :class="{ more, active: value === page }"
+        type="button"
+        @click="() => !more && emit('change', value as number)"
+      >
+        {{ more ? '...' : value }}
+      </button>
+    </div>
+    <button
+      type="button"
+      class="btn next"
+      :disabled="isLastPage"
+      @click="() => emit('change', page + 1)"
+    >
+      {{ pagination?.nextPageText || 'Next' }}
+    </button>
+  </div>
+</template>
+
+<style scoped>
+.pagination {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 32px 20px 24px;
+  margin-bottom: 64px;
+}
+
+.btn {
+  padding: 2px 4px;
+  margin: 0 2px;
+  font-weight: 500;
+  line-height: 1;
+  color: var(--vp-c-text-2);
+  border-radius: 4px;
+  transition: all var(--t-color);
+}
+
+.btn.active {
+  color: var(--vp-c-bg);
+  background-color: var(--vp-c-brand-2);
+  border-color: var(--vp-c-brand-2);
+}
+
+.btn[disabled],
+.btn[disabled]:hover {
+  color: var(--vp-c-gray-1);
+  cursor: not-allowed;
+  background-color: transparent;
+}
+
+.btn.more {
+  color: var(--vp-c-gray-1);
+  cursor: not-allowed;
+  background-color: transparent;
+}
+
+@media (min-width: 768px) {
+  .pagination {
+    padding: 20px;
+    background-color: var(--vp-c-bg);
+    border-radius: 6px;
+    box-shadow: var(--vp-shadow-1);
+  }
+
+  .page-range .btn {
+    padding: 4px 12px;
+    margin: 0 8px;
+    font-size: 14px;
+  }
+}
+</style>
diff --git a/theme/src/client/components/PostList.vue b/theme/src/client/components/PostList.vue
index 63624459..d3b85fd3 100644
--- a/theme/src/client/components/PostList.vue
+++ b/theme/src/client/components/PostList.vue
@@ -1,12 +1,14 @@
 <script lang="ts" setup>
 import { usePostListControl } from '../composables/index.js'
 import PostItem from './PostItem.vue'
+import Pagination from './Pagination.vue'
 
 const {
   pagination,
   postList,
   page,
   totalPage,
+  pageRange,
   isLastPage,
   isFirstPage,
   isPaginationEnabled,
@@ -21,28 +23,16 @@ const {
       :key="post.path"
       :post="post"
     />
-
-    <div v-if="isPaginationEnabled" class="pagination">
-      <button
-        type="button"
-        class="btn prev"
-        :disabled="isFirstPage"
-        @click="() => changePage(-1)"
-      >
-        {{ pagination?.prevPageText || 'Prev' }}
-      </button>
-      <span class="page-info">
-        {{ page }} / {{ totalPage }}
-      </span>
-      <button
-        type="button"
-        class="btn next"
-        :disabled="isLastPage"
-        @click="() => changePage(1)"
-      >
-        {{ pagination?.nextPageText || 'Next' }}
-      </button>
-    </div>
+    <Pagination
+      v-if="isPaginationEnabled"
+      :pagination="pagination"
+      :page="page"
+      :total-page="totalPage"
+      :page-range="pageRange"
+      :is-last-page="isLastPage"
+      :is-first-page="isFirstPage"
+      @change="changePage"
+    />
   </div>
 </template>
 
@@ -52,40 +42,4 @@ const {
   padding-top: 2rem;
   margin: 0 auto;
 }
-
-.pagination {
-  display: flex;
-  align-items: center;
-  justify-content: space-between;
-  padding: 2rem 1.25rem 4rem;
-}
-
-.btn {
-  padding: 0 4px;
-  font-weight: 500;
-  color: var(--vp-c-brand-1);
-  background-color: var(--vp-c-bg);
-  border: 1px solid var(--vp-c-brand-1);
-  border-radius: 4px;
-  transition: all var(--t-color);
-}
-
-.btn:hover {
-  color: var(--vp-c-bg);
-  background-color: var(--vp-c-brand-2);
-  border-color: var(--vp-c-brand-2);
-}
-
-.btn[disabled],
-.btn[disabled]:hover {
-  color: var(--vp-c-gray-1);
-  cursor: not-allowed;
-  background-color: transparent;
-  border-color: var(--vp-c-divider);
-}
-
-.page-info {
-  font-weight: 500;
-  color: var(--vp-c-text-3);
-}
 </style>
diff --git a/theme/src/client/composables/blog.ts b/theme/src/client/composables/blog.ts
index 8c4b87cd..955b6317 100644
--- a/theme/src/client/composables/blog.ts
+++ b/theme/src/client/composables/blog.ts
@@ -1,6 +1,7 @@
 import { usePageLang } from 'vuepress/client'
 import { useExtraBlogData as _useExtraBlogData, useBlogPostData } from '@vuepress-plume/plugin-blog-data/client'
 import { type Ref, computed } from 'vue'
+import { useMediaQuery } from '@vueuse/core'
 import type { PlumeThemeBlogPostItem } from '../../shared/index.js'
 import { useLocaleLink, useRouteQuery, useThemeLocaleData } from '../composables/index.js'
 import { toArray } from '../utils/index.js'
@@ -24,6 +25,7 @@ export function usePostListControl() {
   const list = useLocalePostList()
   const blog = computed(() => themeData.value.blog || {})
   const pagination = computed(() => blog.value.pagination || {})
+  const is960 = useMediaQuery('(max-width: 960px)')
 
   const postList = computed(() => {
     const stickyList = list.value.filter(item =>
@@ -77,8 +79,51 @@ export function usePostListControl() {
     )
   })
 
-  const changePage = (offset: number) => {
-    page.value += offset
+  const pageRange = computed(() => {
+    let range: { value: number | string, more?: true }[] = []
+    const total = totalPage.value
+    const _page = page.value
+    const per = is960.value ? 4 : 5
+
+    if (total <= 0)
+      return range
+    if (total <= 10) {
+      range = Array.from({ length: total }, (_, i) => ({ value: i + 1 }))
+    }
+    else {
+      let i = 1
+      let hasMore = false
+      while (i <= total) {
+        if ((_page <= per && i <= per) || (_page >= total - (per - 1) && i >= total - (per - 1))) {
+          hasMore = false
+          range.push({ value: i })
+        }
+        else if (i <= 2 || i >= total - 1) {
+          hasMore = false
+          range.push({ value: i })
+        }
+        else if (
+          (_page > per + 1 || _page < total - (per + 1))
+          && _page - i < per - 2
+          && i - _page < per - 2
+        ) {
+          hasMore = false
+          range.push({ value: i })
+        }
+        else if (!hasMore) {
+          hasMore = true
+          range.push({ value: i, more: true })
+        }
+        i++
+      }
+    }
+    return range
+  })
+
+  const changePage = (current: number) => {
+    if (page.value === current)
+      return
+    page.value = current
     window.scrollTo({ top: 0, left: 0, behavior: 'instant' })
   }
 
@@ -87,6 +132,7 @@ export function usePostListControl() {
     postList: finalList,
     page,
     totalPage,
+    pageRange,
     isLastPage,
     isFirstPage,
     isPaginationEnabled,