From e593354cb4811aaba1fb9dd04f8477b26cc59411 Mon Sep 17 00:00:00 2001
From: aleidk <ale.navarro.parra@gmail.com>
Date: Sun, 5 Nov 2023 10:32:49 -0300
Subject: [PATCH] Update pagination in table.

Add getPaginationRage to usePagination hook.
Use the getPaginationRage to create dynamic buttons in the table.
---
 src/assets/style/global.css    |  9 ++++
 src/components/Table/Table.tsx | 16 ++++++-
 src/hooks/usePagination.tsx    | 79 +++++++++++++++++++++++-----------
 src/pages/games/index.astro    |  2 +-
 4 files changed, 80 insertions(+), 26 deletions(-)

diff --git a/src/assets/style/global.css b/src/assets/style/global.css
index faf6162..feaa63d 100644
--- a/src/assets/style/global.css
+++ b/src/assets/style/global.css
@@ -68,3 +68,12 @@ td {
   border: 1px solid white;
   text-align: center;
 }
+
+.btn {
+  padding: var(--prj-spacing-1);
+}
+
+.btn-primary {
+  background-color: var(--prj--primary-bg);
+  color: var(--prj--primary-text);
+}
diff --git a/src/components/Table/Table.tsx b/src/components/Table/Table.tsx
index 382d85d..8c05ec6 100644
--- a/src/components/Table/Table.tsx
+++ b/src/components/Table/Table.tsx
@@ -43,8 +43,9 @@ export default function Table({ data, headers }: Props): JSX.Element {
     });
   }, [data, filters]);
 
-  const { items, changeOffset } = usePagination<DataItem>({
+  const { items, changeOffset, getPaginationRange } = usePagination<DataItem>({
     items: filteredItems,
+    limit: 10,
   });
 
   const handleUpdateFilters = (
@@ -179,6 +180,19 @@ export default function Table({ data, headers }: Props): JSX.Element {
         >
           Prev
         </button>
+
+        {getPaginationRange().map((item) => (
+          <button
+            className={item.current ? 'btn-primary' : ''}
+            key={item.page}
+            onClick={() => {
+              changeOffset(Offset.To, item.page);
+            }}
+          >
+            {item.page}
+          </button>
+        ))}
+
         <button
           onClick={() => {
             changeOffset(Offset.Next);
diff --git a/src/hooks/usePagination.tsx b/src/hooks/usePagination.tsx
index 56c0821..7911fa4 100644
--- a/src/hooks/usePagination.tsx
+++ b/src/hooks/usePagination.tsx
@@ -1,12 +1,19 @@
 import { useReducer } from 'react';
 
+interface Page {
+  page: number;
+  current: boolean;
+}
+
 export interface IUsePagination<T> {
   items: T[];
-  changeOffset: (offset: Offset) => void;
+  changeOffset: (offset: Offset, newValue?: number) => void;
+  getPaginationRange: () => Page[];
 }
 
 interface Props<T> {
   items: T[];
+  limit: number;
 }
 
 interface State {
@@ -24,10 +31,12 @@ export enum Offset {
   Prev,
   First,
   Last,
+  To,
 }
 
 export default function usePagination<T>({
   items,
+  limit = 30,
 }: Props<T>): IUsePagination<T> {
   const reducer = (state: State, action: ActionType): State => {
     switch (action.type) {
@@ -44,47 +53,69 @@ export default function usePagination<T>({
   const [state, dispatch] = useReducer(reducer, {
     offset: 0,
     total: 0,
-    limit: 30,
+    limit,
   });
 
-  const changeOffset = (offset: Offset): void => {
+  const changeOffset = (offset: Offset, newValue: number = 1): void => {
+    let value = 0;
     switch (offset) {
       case Offset.Next:
-        dispatch({
-          type: 'update',
-          name: 'offset',
-          value: state.offset + state.limit,
-        });
+        value = state.offset + state.limit;
         break;
       case Offset.Prev:
-        dispatch({
-          type: 'update',
-          name: 'offset',
-          value: state.offset - state.limit,
-        });
+        value = state.offset - state.limit;
         break;
       case Offset.First:
-        dispatch({
-          type: 'update',
-          name: 'offset',
-          value: 0,
-        });
+        value = 0;
         break;
       case Offset.Last:
-        dispatch({
-          type: 'update',
-          name: 'offset',
-          value: items.length - state.limit,
-        });
+        value = items.length - state.limit;
+        break;
+      case Offset.To:
+        value = (newValue - 1) * state.limit;
         break;
-
       default:
         break;
     }
+
+    if (value < 0 || value > items.length - state.limit) {
+      return;
+    }
+
+    dispatch({
+      type: 'update',
+      name: 'offset',
+      value,
+    });
+  };
+
+  /** Returns an array with the aviables pages to directly navigate.
+   * This pages are centered in the current page and offest to 5 items to each side.
+   */
+  const getPaginationRange = (): Page[] => {
+    // NOTE: this is made to work with uneven numbers,
+    // So the current page is always aligned in the center.
+    const paginationToSides = 5;
+
+    const currentPage = Math.ceil(state.offset / state.limit) + 1;
+    const lastPage = Math.ceil(items.length / state.limit);
+    const start = Math.max(currentPage - paginationToSides - 1, 0);
+    const end = Math.min(currentPage + paginationToSides, lastPage);
+
+    return Array.from(
+      {
+        length: end - start,
+      },
+      (_, idx) => {
+        const page = idx + 1 + start;
+        return { page, current: page === currentPage };
+      },
+    );
   };
 
   return {
     changeOffset,
+    getPaginationRange,
     items: items.slice(state.offset, state.offset + state.limit),
   };
 }
diff --git a/src/pages/games/index.astro b/src/pages/games/index.astro
index 653822f..33ad50f 100644
--- a/src/pages/games/index.astro
+++ b/src/pages/games/index.astro
@@ -7,7 +7,7 @@ const rawGames = await getCollection('games');
 
 const games = rawGames.map((item, idx) => ({
   ...item.data,
-  id: idx,
+  id: idx + 1,
   slug: item.slug,
 }));