feat: add archive view of posts

config/collections/index.js

@@ -32,9 +32,9 @@ const getPostsByCategory = (collection) => {
 
   const postsByCategory = {};
   categories.forEach((category) => {
-    const categoryPosts = posts.filter((post) =>
-      post.data.categories.includes(category),
-    );
+    const categoryPosts = posts.filter((post) => {
+      return post.data.categories.includes(category);
+    });
 
     postsByCategory[category] = categoryPosts;
   });

config/filters/index.js

@@ -1,5 +1,6 @@
 const dayjs = require("dayjs");
 const utc = require("dayjs/plugin/utc");
+const advancedFormat = require("dayjs/plugin/advancedFormat");
 
 const postcss = require("postcss");
 const cssnano = require("cssnano");
@@ -8,6 +9,7 @@ const values = Object.values;
 const entries = Object.entries;
 
 dayjs.extend(utc);
+dayjs.extend(advancedFormat);
 
 const minifyCss = async (css) => {
   const output = await postcss([cssnano]).process(css, { from: undefined });
@@ -17,9 +19,35 @@ const minifyCss = async (css) => {
 
 const formatDate = (date, format) => dayjs.utc(date).format(format);
 
+const organizeByDate = (collection) => {
+  const collectionByDate = {};
+
+  collection.forEach((item) => {
+    const year = formatDate(item.date, "YYYY");
+    const month = formatDate(item.date, "MMMM");
+
+    if (!collectionByDate[year]) {
+      return (collectionByDate[year] = {
+        [month]: [item],
+      });
+    }
+
+    if (!collectionByDate[year][month]) {
+      return (collectionByDate[year][month] = [item]);
+    }
+
+    collectionByDate[year][month].push(item);
+  });
+
+  console.log(collectionByDate);
+
+  return collectionByDate;
+};
+
 module.exports = {
   entries,
   formatDate,
   minifyCss,
+  organizeByDate,
   values,
 };