From f5ba1046b13acd239c472e361f345902937662fb Mon Sep 17 00:00:00 2001
From: Armand Philippot <git@armandphilippot.com>
Date: Thu, 20 Jan 2022 11:57:16 +0100
Subject: chore: add a page for projects

---
 src/utils/helpers/projects.ts | 72 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 src/utils/helpers/projects.ts

(limited to 'src/utils/helpers/projects.ts')

diff --git a/src/utils/helpers/projects.ts b/src/utils/helpers/projects.ts
new file mode 100644
index 0000000..3736242
--- /dev/null
+++ b/src/utils/helpers/projects.ts
@@ -0,0 +1,72 @@
+import { Project, ProjectMeta } from '@ts/types/app';
+import { readdirSync } from 'fs';
+import path from 'path';
+
+/**
+ * Retrieve the projects data from filenames.
+ * @param {string[]} filenames - An array of filenames.
+ * @returns {Promise<Project[]>} An array of projects.
+ */
+const getProjectsWithMeta = async (filenames: string[]): Promise<Project[]> => {
+  return Promise.all(
+    filenames.map(async (filename) => {
+      const id = filename.replace(/\.mdx$/, '');
+
+      try {
+        const {
+          image,
+          intro,
+          meta,
+        }: { image: string; intro: string; meta: ProjectMeta } = await import(
+          `../../content/projects/${filename}`
+        );
+
+        const projectMeta: ProjectMeta = meta
+          ? meta
+          : {
+              title: '',
+              publishedOn: '',
+              updatedOn: '',
+              license: '',
+            };
+        const projectIntro = intro ? intro : '';
+        const projectCover = image ? image : '';
+
+        return {
+          id,
+          cover: projectCover,
+          intro: projectIntro,
+          meta: projectMeta,
+          slug: id,
+        };
+      } catch (err) {
+        console.error(err);
+        throw err;
+      }
+    })
+  );
+};
+
+/**
+ * Method to sort an array of projects by publication date.
+ * @param {Project} a - A single project.
+ * @param {Project} b - A single project.
+ * @returns The result used by Array.sort() method: 1 || -1 || 0.
+ */
+const sortProjectByPublicationDate = (a: Project, b: Project) => {
+  if (a.meta.publishedOn < b.meta.publishedOn) return 1;
+  if (a.meta.publishedOn > b.meta.publishedOn) return -1;
+  return 0;
+};
+
+/**
+ * Retrieve all projects in content folder sorted by publication date.
+ * @returns {Promise<Project[]>} An array of projects.
+ */
+export const getSortedProjects = async (): Promise<Project[]> => {
+  const projectsDirectory = path.join(process.cwd(), 'src/content/projects');
+  const filenames = readdirSync(projectsDirectory);
+  const projects = await getProjectsWithMeta(filenames);
+
+  return [...projects].sort(sortProjectByPublicationDate);
+};
-- 
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