From a53bb380ddb8f9e733a3f932dce5ded57da0e3bc Mon Sep 17 00:00:00 2001
From: DIYgod <i@diygod.me>
Date: Fri, 14 Jul 2023 18:06:31 +0100
Subject: [PATCH] feat: more accurate reading time

---
 src/components/home/HomeFeed.tsx    | 27 ++++++++++++---------------
 src/lib/expand-unit.ts              |  5 +++--
 src/lib/i18n/locales/zh/common.json |  1 -
 src/lib/reading-time.ts             | 12 ++++++++++++
 4 files changed, 27 insertions(+), 18 deletions(-)
 create mode 100644 src/lib/reading-time.ts

diff --git a/src/components/home/HomeFeed.tsx b/src/components/home/HomeFeed.tsx
index 23d1f647..82022c1f 100644
--- a/src/components/home/HomeFeed.tsx
+++ b/src/components/home/HomeFeed.tsx
@@ -64,7 +64,7 @@ const PostCard = ({
         cover={post.metadata?.content.cover}
         title={post.metadata?.content?.title}
       />
-      <div className="px-3 py-2 sm:px-5 sm:py-4 w-full min-w-0 h-[146px] sm:h-[164px] flex flex-col space-y-2 text-sm">
+      <div className="px-3 py-2 sm:px-5 sm:py-4 w-full min-w-0 h-[148px] sm:h-[166px] flex flex-col space-y-2 text-sm">
         <div className="line-clamp-3 space-y-2 h-[74px]">
           {comment && (
             <div className="font-medium text-zinc-700 line-clamp-2">
@@ -102,10 +102,10 @@ const PostCard = ({
             </div>
           )}
         </div>
-        <div className="xlog-post-meta text-zinc-400 space-x-2 flex items-center">
+        <div className="xlog-post-meta text-zinc-400 space-x-2 flex items-center text-[13px] h-[26px] truncate">
           {!!post.metadata?.content?.tags?.[1] && (
             <span
-              className="xlog-post-tags hover:text-zinc-600 inline-flex items-center"
+              className="xlog-post-tags hover:text-zinc-600 hover:bg-zinc-200 border transition-colors text-zinc-500 inline-flex items-center bg-zinc-100 rounded-full px-2 py-[2px] truncate"
               onClick={(e) => {
                 e.preventDefault()
                 router.push(`/tag/${post.metadata?.content?.tags?.[1]}`)
@@ -115,19 +115,16 @@ const PostCard = ({
               {post.metadata?.content?.tags?.[1]}
             </span>
           )}
-          {!post.stat?.viewDetailCount && (
-            <span className="xlog-post-word-count inline-flex items-center">
-              <i className="icon-[mingcute--time-line] mr-[2px]" />
-              <span
-                style={{
-                  wordSpacing: "-.2ch",
-                }}
-              >
-                {post.metadata?.content?.readingTime}{" "}
-                {t(post.metadata?.content?.readingTime === 1 ? "min" : "mins")}
-              </span>
+          <span className="xlog-post-word-count inline-flex items-center">
+            <i className="icon-[mingcute--time-line] mr-[2px]" />
+            <span
+              style={{
+                wordSpacing: "-.2ch",
+              }}
+            >
+              {post.metadata?.content?.readingTime} {t("min")}
             </span>
-          )}
+          </span>
           {!!post.stat?.viewDetailCount && (
             <span className="xlog-post-views inline-flex items-center">
               <i className="icon-[mingcute--eye-line] mr-[2px]" />
diff --git a/src/lib/expand-unit.ts b/src/lib/expand-unit.ts
index 15948883..683c1e33 100644
--- a/src/lib/expand-unit.ts
+++ b/src/lib/expand-unit.ts
@@ -4,6 +4,7 @@ import removeMarkdown from "remove-markdown"
 
 import { SCORE_API_DOMAIN, SITE_URL } from "~/lib/env"
 import { toCid, toGateway } from "~/lib/ipfs-parser"
+import readingTime from "~/lib/reading-time"
 import { ExpandedCharacter, ExpandedNote } from "~/lib/types"
 
 import { getNoteSlug } from "./helpers"
@@ -75,8 +76,8 @@ export const expandCrossbellNote = async ({
     expandedNote.metadata.content.readingTime = expandedNote.metadata.content
       .content
       ? Math.round(
-          removeMarkdown(expandedNote.metadata.content.content).length / 400,
-        ) // TODO
+          readingTime(removeMarkdown(expandedNote.metadata.content.content)),
+        )
       : 0
 
     if (useStat) {
diff --git a/src/lib/i18n/locales/zh/common.json b/src/lib/i18n/locales/zh/common.json
index 8bcf1016..e31d2bf6 100644
--- a/src/lib/i18n/locales/zh/common.json
+++ b/src/lib/i18n/locales/zh/common.json
@@ -94,6 +94,5 @@
   "Share Modal": "分享到...",
   "Share": "分享",
   "Share Message": "嘿，我发现了一篇宝藏文章「{{title}}」哩，快来看看吧！",
-  "mins": "分钟",
   "min": "分钟"
 }
diff --git a/src/lib/reading-time.ts b/src/lib/reading-time.ts
new file mode 100644
index 00000000..ad366cc0
--- /dev/null
+++ b/src/lib/reading-time.ts
@@ -0,0 +1,12 @@
+export default function readingTime(text: string) {
+  const chineseCharacters = text.replace(/[\x00-\xff]/g, "")
+  const englishWords = text
+    .replace(/[^a-zA-Z\s]/g, "")
+    .split(/\s+/)
+    .filter(Boolean)
+
+  const chineseReadingTime = chineseCharacters.length / 300
+  const englishReadingTime = englishWords.length / 300
+
+  return chineseReadingTime + englishReadingTime
+}