From 62fd409c818be05d450282bd941e91d7df1236f1 Mon Sep 17 00:00:00 2001
From: dalton-macedo <daltonmrocha@gmail.com>
Date: Wed, 6 Nov 2024 09:24:45 -0300
Subject: [PATCH 1/2] Create favorite-posts.php

Arquivo principal do plugin favoritar posts
---
 favorite-posts.php | 105 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 favorite-posts.php

diff --git a/favorite-posts.php b/favorite-posts.php
new file mode 100644
index 00000000..a51994ad
--- /dev/null
+++ b/favorite-posts.php
@@ -0,0 +1,105 @@
+<?php
+/*
+Plugin Name: Favoritar Post
+Description: Favoritar e desfavoritar post
+Version: 1.0
+Author: Dalton Macedo
+*/
+
+if (!defined('ABSPATH')) {
+    exit;
+}
+
+class FavoritarPostsPlugin {
+    public function __construct() {
+        register_activation_hook(__FILE__, [$this, 'onActivate']);
+        add_action('rest_api_init', [$this, 'registerApiRoutes']);
+        add_action('wp_enqueue_scripts', [$this, 'enqueueScripts']);
+        add_shortcode('favorite_button', [$this, 'exibirBotaoFavoritar']);
+    }
+
+    // Cria a tabela no banco de dados ao ativar o plugin
+    public function onActivate() {
+        global $wpdb;
+        $tableName = $wpdb->prefix . 'favorite_posts';
+        $charsetCollate = $wpdb->get_charset_collate();
+
+        $sql = "CREATE TABLE $tableName (
+            id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
+            user_id BIGINT(20) UNSIGNED NOT NULL,
+            post_id BIGINT(20) UNSIGNED NOT NULL,
+            PRIMARY KEY (id),
+            UNIQUE KEY user_post (user_id, post_id)
+        ) $charsetCollate;";
+
+        require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
+        dbDelta($sql);
+    }
+
+    // Registra rotas na WP REST API
+    public function registerApiRoutes() {
+        register_rest_route('favorite-posts/v1', '/toggle', [
+            'methods' => 'POST',
+            'callback' => [$this, 'handleToggleFavorite'],
+            'permission_callback' => function () {
+                return is_user_logged_in();
+            }
+        ]);
+    }
+
+    // Cria e executa a lógica de favoritar/desfavoritar
+    public function handleToggleFavorite(WP_REST_Request $request) {
+        $userId = get_current_user_id();
+        $postId = $request->get_param('post_id');
+
+        if (!get_post($postId)) {
+            return new WP_Error('invalid_post', 'Post inválido.', ['status' => 404]);
+        }
+
+        global $wpdb;
+        $tableName = $wpdb->prefix . 'favorite_posts';
+
+        // Verifica se o post já está favoritado
+        $favoriteExists = $wpdb->get_var($wpdb->prepare(
+            "SELECT id FROM $tableName WHERE user_id = %d AND post_id = %d",
+            $userId, $postId
+        ));
+
+        if ($favoriteExists) {
+            // Remove o favorito
+            $wpdb->delete($tableName, ['id' => $favoriteExists], ['%d']);
+            return ['status' => 'unfavorited'];
+        } else {
+            // Adiciona o favorito
+            $wpdb->insert($tableName, [
+                'user_id' => $userId,
+                'post_id' => $postId
+            ], ['%d', '%d']);
+            return ['status' => 'favorited'];
+        }
+    }
+
+    // Adiciona os scripts necessários
+    public function enqueueScripts() {
+        if (is_single()) {
+            wp_enqueue_script('favorite-posts-script', plugins_url('/favorite-posts.js', __FILE__), ['jquery'], null, true);
+            wp_localize_script('favorite-posts-script', 'favoritePostsData', [
+                'nonce' => wp_create_nonce('wp_rest'),
+                'apiUrl' => rest_url('favorite-posts/v1/toggle')
+            ]);
+        }
+    }
+
+    // Exibir o botão de favoritar
+    public function exibirBotaoFavoritar($atts) {
+        if (!is_user_logged_in()) {
+            return '<p>Você precisa estar logado para favoritar posts.</p>';
+        }
+
+        global $post;
+        $postId = $post->ID;
+        return '<button class="favorite-button" data-post-id="' . esc_attr($postId) . '">Favoritar</button>';
+    }
+}
+
+new FavoritarPostsPlugin();

From 02dc6381f7a5b7da6e6dd516de817e3025d2568a Mon Sep 17 00:00:00 2001
From: dalton-macedo <daltonmrocha@gmail.com>
Date: Wed, 6 Nov 2024 09:26:31 -0300
Subject: [PATCH 2/2] Create favorite-posts.js

Arquivo js para executar o botao favoritar/desfavoritar
---
 favorite-posts.js | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 favorite-posts.js

diff --git a/favorite-posts.js b/favorite-posts.js
new file mode 100644
index 00000000..4d82eb66
--- /dev/null
+++ b/favorite-posts.js
@@ -0,0 +1,27 @@
+jQuery(document).ready(function($) {
+    $('.favorite-button').on('click', function() {
+        var button = $(this);
+        var postId = button.data('post-id');
+
+        $.ajax({
+            method: 'POST',
+            url: favoritePostsData.apiUrl,
+            beforeSend: function(xhr) {
+                xhr.setRequestHeader('X-WP-Nonce', favoritePostsData.nonce);
+            },
+            data: {
+                post_id: postId
+            },
+            success: function(response) {
+                if (response.status === 'favorited') {
+                    button.text('Desfavoritar');
+                } else if (response.status === 'unfavorited') {
+                    button.text('Favoritar');
+                }
+            },
+            error: function() {
+                alert('Ocorreu um erro. Tente novamente.');
+            }
+        });
+    });
+});