From 517b1ba23ddfdddcbd284dfc89800ef1eb9aae95 Mon Sep 17 00:00:00 2001
From: Max Richter <jim-x@web.de>
Date: Tue, 29 Aug 2023 13:48:52 +0200
Subject: [PATCH] feat: sort by rating by default

---
 lib/crud.ts    | 42 +++++++++++++++++++++++++++---------------
 lib/helpers.ts |  7 +++++++
 lib/types.ts   |  1 +
 3 files changed, 35 insertions(+), 15 deletions(-)

diff --git a/lib/crud.ts b/lib/crud.ts
index bcf7971..3635dd5 100644
--- a/lib/crud.ts
+++ b/lib/crud.ts
@@ -6,18 +6,10 @@ import {
 } from "@lib/documents.ts";
 import { Root } from "https://esm.sh/remark-frontmatter@4.0.1";
 import { getThumbhash } from "@lib/cache/image.ts";
+import { GenericResource } from "@lib/types.ts";
+import { parseRating } from "@lib/helpers.ts";
 
-type Resource = {
-  name: string;
-  id: string;
-  meta: {
-    image?: string;
-    author?: string;
-    thumbnail?: string;
-  };
-};
-
-export async function addThumbnailToResource<T = Resource>(
+export async function addThumbnailToResource<T = GenericResource>(
   res: T,
 ): Promise<T> {
   const imageUrl = res?.meta?.image;
@@ -34,7 +26,27 @@ export async function addThumbnailToResource<T = Resource>(
   };
 }
 
-export function createCrud<T>(
+type SortType = "rating" | "date" | "name" | "author";
+
+function sortFunction<T extends GenericResource>(sortType: SortType) {
+  return (a: T, b: T) => {
+    switch (sortType) {
+      case "rating":
+        return parseRating(a.meta?.rating || 0) >
+            parseRating(b.meta?.rating || 0)
+          ? -1
+          : 1;
+      case "date":
+        return (a.meta?.date || 0) > (b.meta?.date || 0) ? -1 : 1;
+      case "name":
+        return a.name.localeCompare(b.name);
+      case "author":
+        return a.meta?.author?.localeCompare(b.meta?.author || "");
+    }
+  };
+}
+
+export function createCrud<T extends GenericResource>(
   { prefix, parse, render, hasThumbnails = false }: {
     prefix: string;
     hasThumbnails?: boolean;
@@ -80,9 +92,9 @@ export function createCrud<T>(
     await createDocument(path, newDoc);
   }
 
-  async function readAll() {
+  async function readAll({ sort = "rating" }: { sort?: SortType } = {}) {
     const allDocuments = await getDocuments();
-    return Promise.all(
+    return (await Promise.all(
       allDocuments.filter((d) => {
         return d.name.startsWith(prefix) &&
           d.contentType === "text/markdown" &&
@@ -91,7 +103,7 @@ export function createCrud<T>(
         const id = doc.name.replace(prefix, "").replace(/\.md$/, "");
         return read(id);
       }),
-    );
+    )).sort(sortFunction<T>(sort));
   }
 
   return {
diff --git a/lib/helpers.ts b/lib/helpers.ts
index 35f8cad..a5d538a 100644
--- a/lib/helpers.ts
+++ b/lib/helpers.ts
@@ -88,3 +88,10 @@ export function debounce<T extends (...args: Parameters<T>) => void>(
     timer = setTimeout(() => fn.apply(this, args), delay);
   };
 }
+
+export function parseRating(rating: string | number) {
+  if (typeof rating === "string") {
+    return [...rating.matchAll(/⭐/)].length;
+  }
+  return rating;
+}
diff --git a/lib/types.ts b/lib/types.ts
index 9c5e2ff..850609d 100644
--- a/lib/types.ts
+++ b/lib/types.ts
@@ -43,6 +43,7 @@ export type GenericResource = {
     author?: string;
     rating?: number;
     average?: string;
+    date?: Date | string;
     thumbnail?: string;
   };
 };