feat: added new field to posts collections

src/collections/Posts.ts

@@ -1,6 +1,48 @@
 import type { CollectionConfig } from 'payload'
 import { slugField } from 'payload'
 
+function getReadTimeFromPublishedDate(publishedDate: string | null | undefined): string {
+  if (!publishedDate) {
+    return '0 minute'
+  }
+
+  const publishedTimestamp = new Date(publishedDate).getTime()
+
+  if (Number.isNaN(publishedTimestamp)) {
+    return '0 minute'
+  }
+
+  const diffInSeconds = Math.max(0, Math.floor((Date.now() - publishedTimestamp) / 1000))
+  const minuteInSeconds = 60
+  const hourInSeconds = 60 * minuteInSeconds
+  const dayInSeconds = 24 * hourInSeconds
+  const weekInSeconds = 7 * dayInSeconds
+  const monthInSeconds = 30 * dayInSeconds
+
+  if (diffInSeconds < hourInSeconds) {
+    const minutes = Math.max(1, Math.floor(diffInSeconds / minuteInSeconds))
+    return `${minutes} minute`
+  }
+
+  if (diffInSeconds < dayInSeconds) {
+    const hours = Math.floor(diffInSeconds / hourInSeconds)
+    return `${hours} hour`
+  }
+
+  if (diffInSeconds < weekInSeconds) {
+    const days = Math.floor(diffInSeconds / dayInSeconds)
+    return `${days} day`
+  }
+
+  if (diffInSeconds < monthInSeconds) {
+    const weeks = Math.floor(diffInSeconds / weekInSeconds)
+    return `${weeks} week`
+  }
+
+  const months = Math.floor(diffInSeconds / monthInSeconds)
+  return `${months} month`
+}
+
 export const Posts: CollectionConfig = {
   slug: 'posts',
   admin: {
@@ -13,6 +55,24 @@ export const Posts: CollectionConfig = {
     update: ({ req: { user } }) => Boolean(user), // Only authenticated users (admin)
     delete: ({ req: { user } }) => Boolean(user), // Only authenticated users (admin)
   },
+  hooks: {
+    afterRead: [
+      ({ doc }) => {
+        if (!doc || typeof doc !== 'object') {
+          return doc
+        }
+
+        const postDoc = doc as Record<string, unknown>
+        const publishedDate =
+          typeof postDoc.publishedDate === 'string' ? postDoc.publishedDate : undefined
+
+        return {
+          ...postDoc,
+          readTime: getReadTimeFromPublishedDate(publishedDate),
+        }
+      },
+    ],
+  },
   fields: [
     {
       name: 'type',
@@ -79,6 +139,15 @@ export const Posts: CollectionConfig = {
       relationTo: 'authors',
       required: true,
     },
+    {
+      name: 'readTime',
+      label: 'Read Time',
+      type: 'text',
+      virtual: true,
+      admin: {
+        readOnly: true,
+      },
+    },
   ],
 }
 

src/payload-types.ts

@@ -215,6 +215,7 @@ export interface Post {
     [k: string]: unknown;
   };
   author: number | Author;
+  readTime?: string | null;
   updatedAt: string;
   createdAt: string;
 }
@@ -440,6 +441,7 @@ export interface PostsSelect<T extends boolean = true> {
   publishedDate?: T;
   content?: T;
   author?: T;
+  readTime?: T;
   updatedAt?: T;
   createdAt?: T;
 }