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assets/js/utils/http.js

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+/* ----------------------------------------------------------------------------
+ * Easy!Appointments - Online Appointment Scheduler
+ *
+ * @package     EasyAppointments
+ * @author      A.Tselegidis <alextselegidis@gmail.com>
+ * @copyright   Copyright (c) Alex Tselegidis
+ * @license     https://opensource.org/licenses/GPL-3.0 - GPLv3
+ * @link        https://easyappointments.org
+ * @since       v1.5.0
+ * ---------------------------------------------------------------------------- */
+
+/**
+ * HTTP requests utility.
+ *
+ * This module implements the functionality of HTTP requests.
+ */
+window.App.Utils.Http = (function () {
+    /**
+     * Perform an HTTP request.
+     *
+     * @param {String} method
+     * @param {String} url
+     * @param {Object} data
+     *
+     * @return {Promise}
+     */
+    function request(method, url, data) {
+        return new Promise((resolve, reject) => {
+            fetch(App.Utils.Url.siteUrl(url), {
+                method,
+                mode: 'cors',
+                credentials: 'same-origin',
+                headers: {
+                    'Content-Type': 'application/json',
+                },
+                redirect: 'follow',
+                referrer: 'no-referrer',
+                body: data ? JSON.stringify(data) : undefined,
+            })
+                .then((response) => {
+                    if (!response.ok) {
+                        response
+                            .text()
+                            .then((message) => {
+                                const error = new Error(message);
+                                error.status = response.status;
+                                throw error;
+                            })
+                            .catch((error) => {
+                                console.error(error);
+                                reject(error);
+                            });
+                    }
+
+                    return response;
+                })
+                .then((response) => {
+                    return response.json();
+                })
+                .then((json) => {
+                    resolve(json);
+                })
+                .catch((error) => {
+                    console.error(error);
+                    reject(error);
+                });
+        });
+    }
+
+    /**
+     * Upload the provided file.
+     *
+     * @param {String} method
+     * @param {String} url
+     * @param {File} file
+     *
+     * @return {Promise}
+     */
+    function upload(method, url, file) {
+        const formData = new FormData();
+
+        formData.append('file', file, file.name);
+
+        return new Promise((resolve, reject) => {
+            fetch(App.Utils.Url.siteUrl(url), {
+                method,
+                redirect: 'follow',
+                referrer: 'no-referrer',
+                body: formData,
+            })
+                .then((response) => {
+                    if (!response.ok) {
+                        response
+                            .text()
+                            .then((message) => {
+                                const error = new Error(message);
+                                error.status = response.status;
+                                throw error;
+                            })
+                            .catch((error) => {
+                                console.error(error);
+                                reject(error);
+                            });
+                    }
+
+                    return response;
+                })
+                .then((response) => {
+                    return response.json();
+                })
+                .then((json) => {
+                    resolve(json);
+                })
+                .catch((error) => {
+                    console.error(error);
+                    reject(error);
+                });
+        });
+    }
+
+    /**
+     * Download the requested URL.
+     *
+     * @param {String} method
+     * @param {String} url
+     *
+     * @return {Promise}
+     */
+    function download(method, url) {
+        return new Promise((resolve, reject) => {
+            fetch(App.Utils.Url.siteUrl(url), {
+                method,
+                mode: 'cors',
+                credentials: 'same-origin',
+                headers: {
+                    'Content-Type': 'application/json',
+                },
+                redirect: 'follow',
+                referrer: 'no-referrer',
+            })
+                .then((response) => {
+                    if (!response.ok) {
+                        response
+                            .text()
+                            .then((message) => {
+                                const error = new Error(message);
+                                error.status = response.status;
+                                throw error;
+                            })
+                            .catch((error) => {
+                                console.error(error);
+                                reject(error);
+                            });
+                    }
+
+                    return response;
+                })
+                .then((response) => {
+                    return response.arrayBuffer();
+                })
+                .then((json) => {
+                    resolve(json);
+                })
+                .catch((error) => {
+                    console.error(error);
+                    reject(error);
+                });
+        });
+    }
+
+    return {
+        request,
+        upload,
+        download,
+    };
+})();