Fixes invalid date format in requests to PE Cidadão AP

fix-pe-cidadao.js

// ==UserScript==
// @name         Fix PE Cidadão Agendamento Payload (XHR + Fetch)
// @namespace    http://tampermonkey.net/
// @version      1.1
// @description  Fixes invalid date format in requests to PE Cidadão API
// @author       cesar.dev.br
// @match        https://pecidadao.pe.gov.br/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    const targetUrlPart = "/horarioAgenda/consultarParaAgendamento/";

    function fixDatePayload(body) {
        try {
            let data = JSON.parse(body);
            if (data.data && typeof data.data === "string") {
                let parts = data.data.split("T");
                let dateParts = parts[0].split("-");
                if (dateParts.length === 3) {
                    let year = dateParts[0];
                    let month = dateParts[1];
                    let day = dateParts[2];

                    // Detect wrong ordering (day > 12 means it's probably day-month swapped)
                    if (parseInt(month) > 12) {
                        let tmp = month;
                        month = day;
                        day = tmp;
                    }

                    // Ensure zero-padding
                    month = month.toString().padStart(2, "0");
                    day = day.toString().padStart(2, "0");

                    data.data = `${year}-${month}-${day}T${parts[1]}`;
                    console.log("[Tampermonkey] Fixed date to:", data.data);
                }
            }
            return JSON.stringify(data);
        } catch (e) {
            console.warn("[Tampermonkey] Could not parse payload:", e);
            return body;
        }
    }

    // ---- Patch fetch ----
    const origFetch = window.fetch;
    window.fetch = async function(resource, config) {
        try {
            if (typeof resource === "string" && resource.includes(targetUrlPart) && config && config.body) {
                config.body = fixDatePayload(config.body);
            }
        } catch (e) {
            console.warn("[Tampermonkey] Fetch hook error:", e);
        }
        return origFetch.apply(this, arguments);
    };

    // ---- Patch XHR ----
    const origOpen = XMLHttpRequest.prototype.open;
    const origSend = XMLHttpRequest.prototype.send;

    XMLHttpRequest.prototype.open = function(method, url) {
        this._intercept = url.includes(targetUrlPart);
        return origOpen.apply(this, arguments);
    };

    XMLHttpRequest.prototype.send = function(body) {
        if (this._intercept && typeof body === "string") {
            body = fixDatePayload(body);
        }
        return origSend.call(this, body);
    };

})();