Guilherme pontes

css/style.css

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+.likeImg{
+	display: inline-block;
+	width: 25px;
+	cursor: pointer;
+	transition: transform 0.6s ease-in-out;
+}
+
+.likeImg:hover {
+	transform: scale(1.6);
+}
+
+.alert{
+	position: relative;
+  padding: 0.75rem 1.25rem;
+  margin-bottom: 1rem;
+  border: 1px solid transparent;
+  border-radius: 0.25rem;
+}
+
+.alert-warning{
+	color: #145275;
+  background-color: #fff3cd;
+  border-color: #231d5c;
+}
+

includes/functions.php

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+<?php
+
+// Função para adicionar um botão de "like" após o conteúdo do post.
+function add_text_after_content($content) {
+    global $wpdb;
+    $post_id = get_the_ID();
+    $user_id = get_current_user_id();
+
+    $table_name = $wpdb->prefix . 'liked'; 
+
+    // Consulta para verificar se o usuário já curtiu o post.
+    $query = $wpdb->prepare("SELECT * FROM $table_name WHERE id_post = %d AND id_user = %d", $post_id, $user_id);
+    $already_liked = $wpdb->get_row($query);
+
+    $active = '';
+    $liked = 'false';
+    if($already_liked){
+        $active = '-active';
+        $liked = 'true';
+    }
+
+    if (is_singular('post')) {
+        if(!is_user_logged_in()){
+            $content .= "<div class='alert alert-warning'>Funcionalidade de like somente para usuários cadastrados</div>";
+            return $content;
+        }
+
+        $img_url = plugin_dir_url(dirname(__FILE__)) . "img/star$active.svg";
+        $img_html = '<div class="likeContainer"><img src="' . $img_url . '" class="likeImg" id="clickToLike" data-post-id="' . $post_id . '" data-user-id="' . $user_id . '" data-liked="' . $liked . '" alt="like"/></div>';
+        $content .= $img_html;
+    }
+
+    return $content;
+}
+add_filter('the_content', 'add_text_after_content');
+
+// Função para registrar endpoints personalizados da REST API.
+add_action('rest_api_init', function () {
+    register_rest_route('favorites/v1', '/toggle/', [
+        'methods' => 'POST',
+        'callback' => 'toggle_favorite',
+        'permission_callback' => function () {
+            return is_user_logged_in(); // Garante que apenas usuários logados possam acessar.
+        },
+    ]);
+});
+
+// Função de callback para o endpoint da REST API.
+function toggle_favorite(WP_REST_Request $request) {
+    global $wpdb;
+
+    $user_id = get_current_user_id();
+    $post_id = $request->get_param('post_id');
+
+    if (!$user_id || !$post_id) {
+        return new WP_REST_Response(['success' => false, 'message' => 'Dados inválidos'], 400);
+    }
+
+    $table_name = $wpdb->prefix . 'liked'; 
+
+    // Verifica se o post já foi favoritado pelo usuário.
+    $favorite = $wpdb->get_row($wpdb->prepare(
+        "SELECT * FROM $table_name WHERE id_post = %d AND id_user = %d",
+        $post_id, $user_id
+    ));
+
+    if ($favorite) {
+        // Se já estiver favoritado, remove.
+        $wpdb->delete($table_name, ['id_user' => $user_id, 'id_post' => $post_id]);
+        return new WP_REST_Response(['success' => true, 'message' => 'disliked'], 200);
+    } else {
+        // Caso contrário, adiciona como favorito.
+        $wpdb->insert($table_name, ['id_post' => $post_id, 'id_user' => $user_id]);
+        return new WP_REST_Response(['success' => true, 'message' => 'liked'], 200);
+    }
+}

includes/install.php

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+<?php
+
+function create_custom_table() {
+    global $wpdb;
+
+    $nome_tabela = $wpdb->prefix . 'liked';
+
+    $charset_collate = $wpdb->get_charset_collate();
+
+    $sql = "CREATE TABLE IF NOT EXISTS $nome_tabela (
+        id BIGINT(20) NOT NULL AUTO_INCREMENT,
+        id_post BIGINT(20) NOT NULL,
+        id_user BIGINT(20) NOT NULL,
+        PRIMARY KEY (id),
+        UNIQUE KEY user_post (id_user, id_post)
+    ) $charset_collate;";
+
+    require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
+
+    dbDelta($sql);
+}
+
+register_activation_hook(__FILE__, 'create_custom_table');

js/script.js

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+jQuery(document).ready(function ($) {
+  $(".likeImg").click(function () {
+      let postID = $(this).data("post-id");
+      let userID = $(this).data("user-id");
+      let liked = $(this).data("liked");
+
+      let data = {
+          post_id: postID,
+          user_id: userID,
+      };
+
+      $.ajax({
+          url: '/wp-json/favorites/v1/toggle/',  // Usando o endpoint da REST API.
+          method: 'POST',
+          data: data,
+          beforeSend: function (xhr) {
+              xhr.setRequestHeader('X-WP-Nonce', myAjax.restNonce); // Incluindo o nonce.
+          },
+          success: function (response) {
+              if (response.success) {
+                  if (response.message === "disliked") {
+                      $(".likeImg").attr("src", myAjax.imgUrl + "star.svg");
+                      $(".likeImg").data("liked", "false");
+                  } else if (response.message === "liked") {
+                      $(".likeImg").attr("src", myAjax.imgUrl + "star-active.svg");
+                      $(".likeImg").data("liked", "true");
+                  }
+              } else {
+                  alert(response.message);
+              }
+          },
+          error: function (response) {
+              alert('Ocorreu um erro ao processar sua solicitação.');
+          }
+      });
+  });
+});

like.php

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+<?php
+/*
+Plugin Name: Favoritar posts
+Description: Favoritar Post Wordpress para usuarios logados
+Version: 1.0
+Author: Guilherme Pontes
+*/
+
+function active_plugin() {
+    require_once plugin_dir_path(__FILE__) . 'includes/install.php';
+    create_custom_table();
+}
+register_activation_hook(__FILE__, 'active_plugin');
+
+function enqueue_scripts() {
+    $plugin_dir = plugin_dir_url(__FILE__);
+
+    wp_enqueue_script('like-js', $plugin_dir . 'js/script.js', array('jquery'), '1.0', true);
+    wp_enqueue_style('like-style', $plugin_dir . 'css/style.css', array(), '1.0');
+
+    // Passar o nonce e outros parâmetros para o JavaScript.
+    $paths = array(
+        'ajaxurl' => admin_url('admin-ajax.php'),
+        'imgUrl' => $plugin_dir . "img/",
+        'restNonce' => wp_create_nonce('wp_rest') // Gera o nonce para REST API.
+    );
+    wp_localize_script('like-js', 'myAjax', $paths);
+}
+add_action('wp_enqueue_scripts', 'enqueue_scripts');
+
+require_once plugin_dir_path(__FILE__) . 'includes/functions.php';