| 1 | /** |
| 2 | * @param { string | URL } urlDeServiceWorkerQueRecibeNotificaciones |
| 3 | */ |
| 4 | export async function activaNotificacionesPush( |
| 5 | |
| 6 | urlDeServiceWorkerQueRecibeNotificaciones) { |
| 7 | |
| 8 | // Valida que el navegador soporte notificaciones push. |
| 9 | if (!('PushManager' in window)) |
| 10 | throw new Error("Este navegador no soporta notificaciones push.") |
| 11 | |
| 12 | // Valida que el navegador soporte notificaciones, |
| 13 | if (!("Notification" in window)) |
| 14 | throw new Error("Este navegador no soporta notificaciones push.") |
| 15 | |
| 16 | // Valida que el navegador soporte service workers, |
| 17 | if (!("serviceWorker" in navigator)) |
| 18 | throw new Error("Este navegador no soporta service workers.") |
| 19 | |
| 20 | // Recupera el permiso para usar notificaciones |
| 21 | let permiso = Notification.permission |
| 22 | if (permiso === "default") { |
| 23 | // Permiso no asignado. Pide al usuario su autorización. |
| 24 | permiso = await Notification.requestPermission() |
| 25 | } |
| 26 | |
| 27 | // Valida que el usuario haya permitido usar notificaciones.. |
| 28 | if (permiso === "denied") |
| 29 | throw new Error("Notificaciones bloqueadas.") |
| 30 | |
| 31 | const registro = await navigator.serviceWorker.register( |
| 32 | urlDeServiceWorkerQueRecibeNotificaciones) |
| 33 | console.log(urlDeServiceWorkerQueRecibeNotificaciones, "registrado.") |
| 34 | console.log(registro) |
| 35 | |
| 36 | if (!("showNotification" in registro)) |
| 37 | throw new Error("Este navegador no soporta notificaciones.") |
| 38 | } |
| 1 | /** |
| 2 | * Devuelve una literal de objeto que se puede usar para enviar |
| 3 | * en formato JSON al servidor. |
| 4 | * DTO es un acrónimo para Data Transder Object, u |
| 5 | * objeto para transferencia de datos. |
| 6 | * @param { PushSubscription } suscripcion |
| 7 | */ |
| 8 | export function calculaDtoParaSuscripcion(suscripcion) { |
| 9 | const key = suscripcion.getKey("p256dh") |
| 10 | const token = suscripcion.getKey("auth") |
| 11 | const supported = PushManager.supportedContentEncodings |
| 12 | const encodings = Array.isArray(supported) && supported.length > 0 |
| 13 | ? supported |
| 14 | : ["aesgcm"] |
| 15 | const endpoint = suscripcion.endpoint |
| 16 | const publicKey = key === null |
| 17 | ? null |
| 18 | : btoa(String.fromCharCode.apply(null, new Uint8Array(key))) |
| 19 | const authToken = token === null |
| 20 | ? null |
| 21 | : btoa(String.fromCharCode.apply(null, new Uint8Array(token))) |
| 22 | const contentEncoding = encodings[0] |
| 23 | return { |
| 24 | endpoint, |
| 25 | publicKey, |
| 26 | authToken, |
| 27 | contentEncoding |
| 28 | } |
| 29 | } |
| 30 |
| 1 | import { getSuscripcionPush } from "./getSuscripcionPush.js" |
| 2 | |
| 3 | export async function cancelaSuscripcionPush() { |
| 4 | const suscripcion = await getSuscripcionPush() |
| 5 | const resultado = suscripcion === null |
| 6 | ? false |
| 7 | : await suscripcion.unsubscribe() |
| 8 | return resultado === true ? suscripcion : null |
| 9 | } |
| 1 | import { exportaAHtml } from "./exportaAHtml.js" |
| 2 | import { ProblemDetails } from "./ProblemDetails.js" |
| 3 | |
| 4 | /** |
| 5 | * Espera a que la promesa de un fetch termine. Si |
| 6 | * hay error, lanza una excepción. Si no hay error, |
| 7 | * interpreta la respuesta del servidor como JSON y |
| 8 | * la convierte en una literal de objeto. |
| 9 | * |
| 10 | * @param { string | Promise<Response> } servicio |
| 11 | */ |
| 12 | export async function consumeJson(servicio) { |
| 13 | |
| 14 | if (typeof servicio === "string") { |
| 15 | servicio = fetch(servicio, { |
| 16 | headers: { "Accept": "application/json, application/problem+json" } |
| 17 | }) |
| 18 | } else if (!(servicio instanceof Promise)) { |
| 19 | throw new Error("Servicio de tipo incorrecto.") |
| 20 | } |
| 21 | |
| 22 | const respuesta = await servicio |
| 23 | |
| 24 | const headers = respuesta.headers |
| 25 | |
| 26 | if (respuesta.ok) { |
| 27 | // Aparentemente el servidor tuvo éxito. |
| 28 | |
| 29 | if (respuesta.status === 204) { |
| 30 | // No contiene texto de respuesta. |
| 31 | |
| 32 | return { headers, body: {} } |
| 33 | |
| 34 | } else { |
| 35 | |
| 36 | const texto = await respuesta.text() |
| 37 | |
| 38 | try { |
| 39 | |
| 40 | return { headers, body: JSON.parse(texto) } |
| 41 | |
| 42 | } catch (error) { |
| 43 | |
| 44 | // El contenido no es JSON. Probablemente sea texto de un error. |
| 45 | throw new ProblemDetails(respuesta.status, headers, texto, |
| 46 | "/error/errorinterno.html") |
| 47 | |
| 48 | } |
| 49 | |
| 50 | } |
| 51 | |
| 52 | } else { |
| 53 | // Hay un error. |
| 54 | |
| 55 | const texto = await respuesta.text() |
| 56 | |
| 57 | if (texto === "") { |
| 58 | |
| 59 | // No hay texto. Se usa el texto predeterminado. |
| 60 | throw new ProblemDetails(respuesta.status, headers, respuesta.statusText) |
| 61 | |
| 62 | } else { |
| 63 | // Debiera se un ProblemDetails en JSON. |
| 64 | |
| 65 | try { |
| 66 | |
| 67 | const { title, type, detail } = JSON.parse(texto) |
| 68 | |
| 69 | throw new ProblemDetails(respuesta.status, headers, |
| 70 | typeof title === "string" ? title : respuesta.statusText, |
| 71 | typeof type === "string" ? type : undefined, |
| 72 | typeof detail === "string" ? detail : undefined) |
| 73 | |
| 74 | } catch (error) { |
| 75 | |
| 76 | if (error instanceof ProblemDetails) { |
| 77 | // El error si era un ProblemDetails |
| 78 | |
| 79 | throw error |
| 80 | |
| 81 | } else { |
| 82 | |
| 83 | throw new ProblemDetails(respuesta.status, headers, respuesta.statusText, |
| 84 | undefined, texto) |
| 85 | |
| 86 | } |
| 87 | |
| 88 | } |
| 89 | |
| 90 | } |
| 91 | |
| 92 | } |
| 93 | |
| 94 | } |
| 95 | |
| 96 | exportaAHtml(consumeJson) |
| 1 | import { consumeJson } from "./consumeJson.js" |
| 2 | import { exportaAHtml } from "./exportaAHtml.js" |
| 3 | |
| 4 | /** |
| 5 | * @param { string } url |
| 6 | * @param { Object } body |
| 7 | * @param { "GET" | "POST"| "PUT" | "PATCH" | "DELETE" | "TRACE" | "OPTIONS" |
| 8 | * | "CONNECT" | "HEAD" } metodoHttp |
| 9 | */ |
| 10 | export async function enviaJson(url, body, metodoHttp = "POST") { |
| 11 | return await consumeJson(fetch(url, { |
| 12 | method: metodoHttp, |
| 13 | headers: { |
| 14 | "Content-Type": "application/json", |
| 15 | "Accept": "application/json, application/problem+json" |
| 16 | }, |
| 17 | body: JSON.stringify(body) |
| 18 | })) |
| 19 | } |
| 20 | |
| 21 | exportaAHtml(enviaJson) |
| 1 | /** |
| 2 | * Permite que los eventos de html usen la función. |
| 3 | * @param {function} functionInstance |
| 4 | */ |
| 5 | export function exportaAHtml(functionInstance) { |
| 6 | window[nombreDeFuncionParaHtml(functionInstance)] = functionInstance |
| 7 | } |
| 8 | |
| 9 | /** |
| 10 | * @param {function} valor |
| 11 | */ |
| 12 | export function nombreDeFuncionParaHtml(valor) { |
| 13 | const names = valor.name.split(/\s+/g) |
| 14 | return names[names.length - 1] |
| 15 | } |
| 1 | export async function getSuscripcionPush() { |
| 2 | // Recupera el service worker registrado. |
| 3 | const registro = await navigator.serviceWorker.ready |
| 4 | return registro.pushManager.getSubscription() |
| 5 | } |
| 1 | import { exportaAHtml } from "./exportaAHtml.js" |
| 2 | import { ProblemDetails } from "./ProblemDetails.js" |
| 3 | |
| 4 | /** |
| 5 | * Muestra un error en la consola y en un cuadro de |
| 6 | * alerta el mensaje de una excepción. |
| 7 | * @param { ProblemDetails | Error | null } error descripción del error. |
| 8 | */ |
| 9 | export function muestraError(error) { |
| 10 | |
| 11 | if (error === null) { |
| 12 | |
| 13 | console.error("Error") |
| 14 | alert("Error") |
| 15 | |
| 16 | } else if (error instanceof ProblemDetails) { |
| 17 | |
| 18 | let mensaje = error.title |
| 19 | if (error.detail) { |
| 20 | mensaje += `\n\n${error.detail}` |
| 21 | } |
| 22 | mensaje += `\n\nCódigo: ${error.status}` |
| 23 | if (error.type) { |
| 24 | mensaje += ` ${error.type}` |
| 25 | } |
| 26 | |
| 27 | console.error(mensaje) |
| 28 | console.error(error) |
| 29 | console.error("Headers:") |
| 30 | error.headers.forEach((valor, llave) => console.error(llave, "=", valor)) |
| 31 | alert(mensaje) |
| 32 | |
| 33 | } else { |
| 34 | |
| 35 | console.error(error) |
| 36 | alert(error.message) |
| 37 | |
| 38 | } |
| 39 | |
| 40 | } |
| 41 | |
| 42 | exportaAHtml(muestraError) |
| 1 | import { exportaAHtml } from "./exportaAHtml.js" |
| 2 | |
| 3 | /** |
| 4 | * @param { Document | HTMLElement } raizHtml |
| 5 | * @param { any } objeto |
| 6 | */ |
| 7 | export function muestraObjeto(raizHtml, objeto) { |
| 8 | |
| 9 | for (const [nombre, definiciones] of Object.entries(objeto)) { |
| 10 | |
| 11 | if (Array.isArray(definiciones)) { |
| 12 | |
| 13 | muestraArray(raizHtml, nombre, definiciones) |
| 14 | |
| 15 | } else if (definiciones !== undefined && definiciones !== null) { |
| 16 | |
| 17 | const elementoHtml = buscaElementoHtml(raizHtml, nombre) |
| 18 | |
| 19 | if (elementoHtml instanceof HTMLInputElement) { |
| 20 | |
| 21 | muestraInput(raizHtml, elementoHtml, definiciones) |
| 22 | |
| 23 | } else if (elementoHtml !== null) { |
| 24 | |
| 25 | for (const [atributo, valor] of Object.entries(definiciones)) { |
| 26 | if (atributo in elementoHtml) { |
| 27 | elementoHtml[atributo] = valor |
| 28 | } |
| 29 | } |
| 30 | |
| 31 | } |
| 32 | |
| 33 | } |
| 34 | |
| 35 | } |
| 36 | |
| 37 | } |
| 38 | exportaAHtml(muestraObjeto) |
| 39 | |
| 40 | /** |
| 41 | * @param { Document | HTMLElement } raizHtml |
| 42 | * @param { string } nombre |
| 43 | */ |
| 44 | export function buscaElementoHtml(raizHtml, nombre) { |
| 45 | return raizHtml.querySelector( |
| 46 | `#${nombre},[name="${nombre}"],[data-name="${nombre}"]`) |
| 47 | } |
| 48 | |
| 49 | /** |
| 50 | * @param { Document | HTMLElement } raizHtml |
| 51 | * @param { string } propiedad |
| 52 | * @param {any[]} valores |
| 53 | */ |
| 54 | function muestraArray(raizHtml, propiedad, valores) { |
| 55 | |
| 56 | const conjunto = new Set(valores) |
| 57 | const elementos = |
| 58 | raizHtml.querySelectorAll(`[name="${propiedad}"],[data-name="${propiedad}"]`) |
| 59 | |
| 60 | if (elementos.length === 1) { |
| 61 | const elemento = elementos[0] |
| 62 | |
| 63 | if (elemento instanceof HTMLSelectElement) { |
| 64 | const options = elemento.options |
| 65 | for (let i = 0, len = options.length; i < len; i++) { |
| 66 | const option = options[i] |
| 67 | option.selected = conjunto.has(option.value) |
| 68 | } |
| 69 | return |
| 70 | } |
| 71 | |
| 72 | } |
| 73 | |
| 74 | for (let i = 0, len = elementos.length; i < len; i++) { |
| 75 | const elemento = elementos[i] |
| 76 | if (elemento instanceof HTMLInputElement) { |
| 77 | elemento.checked = conjunto.has(elemento.value) |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | } |
| 82 | |
| 83 | /** |
| 84 | * @param { Document | HTMLElement } raizHtml |
| 85 | * @param { HTMLInputElement } input |
| 86 | * @param { any } definiciones |
| 87 | */ |
| 88 | function muestraInput(raizHtml, input, definiciones) { |
| 89 | |
| 90 | for (const [atributo, valor] of Object.entries(definiciones)) { |
| 91 | |
| 92 | if (atributo == "data-file") { |
| 93 | |
| 94 | const img = getImgParaElementoHtml(raizHtml, input) |
| 95 | if (img !== null) { |
| 96 | input.dataset.file = valor |
| 97 | input.value = "" |
| 98 | if (valor === "") { |
| 99 | img.src = "" |
| 100 | img.hidden = true |
| 101 | } else { |
| 102 | img.src = valor |
| 103 | img.hidden = false |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | } else if (atributo in input) { |
| 108 | |
| 109 | input[atributo] = valor |
| 110 | |
| 111 | } |
| 112 | } |
| 113 | |
| 114 | } |
| 115 | |
| 116 | /** |
| 117 | * @param { Document | HTMLElement } raizHtml |
| 118 | * @param { HTMLElement } elementoHtml |
| 119 | */ |
| 120 | export function getImgParaElementoHtml(raizHtml, elementoHtml) { |
| 121 | const imgId = elementoHtml.getAttribute("data-img") |
| 122 | if (imgId === null) { |
| 123 | return null |
| 124 | } else { |
| 125 | const input = buscaElementoHtml(raizHtml, imgId) |
| 126 | if (input instanceof HTMLImageElement) { |
| 127 | return input |
| 128 | } else { |
| 129 | return null |
| 130 | } |
| 131 | } |
| 132 | } |
| 1 | /** |
| 2 | * Detalle de los errores devueltos por un servicio. |
| 3 | */ |
| 4 | export class ProblemDetails extends Error { |
| 5 | |
| 6 | /** |
| 7 | * @param {number} status |
| 8 | * @param {Headers} headers |
| 9 | * @param {string} title |
| 10 | * @param {string} [type] |
| 11 | * @param {string} [detail] |
| 12 | */ |
| 13 | constructor(status, headers, title, type, detail) { |
| 14 | super(title) |
| 15 | /** |
| 16 | * @readonly |
| 17 | */ |
| 18 | this.status = status |
| 19 | /** |
| 20 | * @readonly |
| 21 | */ |
| 22 | this.headers = headers |
| 23 | /** |
| 24 | * @readonly |
| 25 | */ |
| 26 | this.type = type |
| 27 | /** |
| 28 | * @readonly |
| 29 | */ |
| 30 | this.detail = detail |
| 31 | /** |
| 32 | * @readonly |
| 33 | */ |
| 34 | this.title = title |
| 35 | } |
| 36 | |
| 37 | } |
| 1 | /** |
| 2 | * @param { Uint8Array } applicationServerKey |
| 3 | */ |
| 4 | export async function suscribeAPush(applicationServerKey) { |
| 5 | // Recupera el service worker registrado. |
| 6 | const registro = await navigator.serviceWorker.ready |
| 7 | return registro.pushManager.subscribe({ |
| 8 | userVisibleOnly: true, |
| 9 | applicationServerKey |
| 10 | }) |
| 11 | } |
| 1 | /** |
| 2 | * @param { string } base64String |
| 3 | */ |
| 4 | export function urlBase64ToUint8Array(base64String) { |
| 5 | const padding = "=".repeat((4 - (base64String.length % 4)) % 4) |
| 6 | const base64 = (base64String + padding).replace(/\-/g, '+').replace(/_/g, '/') |
| 7 | const rawData = atob(base64) |
| 8 | const outputArray = new Uint8Array(rawData.length) |
| 9 | for (let i = 0; i < rawData.length; ++i) { |
| 10 | outputArray[i] = rawData.charCodeAt(i) |
| 11 | } |
| 12 | return outputArray |
| 13 | } |