Add/Edit: add Last Service button to some dates

Add a button that sets its to the closest past Sunday or Wednesday, in the fields that are usually set to last service.

Dovrai installare un'estensione come Tampermonkey, Greasemonkey o Violentmonkey per installare questo script.

You will need to install an extension such as Tampermonkey to install this script.

Dovrai installare un'estensione come Tampermonkey o Violentmonkey per installare questo script.

Dovrai installare un'estensione come Tampermonkey o Userscripts per installare questo script.

Dovrai installare un'estensione come ad esempio Tampermonkey per installare questo script.

Dovrai installare un gestore di script utente per installare questo script.

(Ho già un gestore di script utente, lasciamelo installare!)

Dovrai installare un'estensione come ad esempio Stylus per installare questo stile.

Dovrai installare un'estensione come ad esempio Stylus per installare questo stile.

Dovrai installare un'estensione come ad esempio Stylus per installare questo stile.

Dovrai installare un'estensione per la gestione degli stili utente per installare questo stile.

Dovrai installare un'estensione per la gestione degli stili utente per installare questo stile.

Dovrai installare un'estensione per la gestione degli stili utente per installare questo stile.

(Ho già un gestore di stile utente, lasciamelo installare!)

// ==UserScript==
// @name         Add/Edit: add Last Service button to some dates
// @namespace    https://github.com/nate-kean/
// @version      2025.12.8
// @description  Add a button that sets its to the closest past Sunday or Wednesday, in the fields that are usually set to last service.
// @author       Nate Kean
// @match        https://jamesriver.fellowshiponego.com/members/edit/*
// @match        https://jamesriver.fellowshiponego.com/members/add*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=fellowshiponego.com
// @grant        none
// @license      MIT
// @run-at       document-end
// @require      https://update.greasyfork.org/scripts/554804/1689525/Nate%27s%20Day%20Button.js
// ==/UserScript==

(async function() {
    document.head.insertAdjacentHTML("beforeend", `
        <style id="nates-last-service-button-css">
            .dates-panel .date-section {
                max-width: 750px !important;

                & .nates-day-button.last-service {
                    float: right;
                    margin-top: -2px;
                }

                & .date-holder {
                    width: 250px !important;

                    & label {
                        width: unset !important;
                    }

                    & .input-holder {
                        width: 100%;
                    }
                }
            }
        </style>
    `);

    // Overrides
    const specialDates = [
        new Date("12/6/2025"), // James River Christmas Saturday 2025
    ];

    const fieldNames = [
        "First Visit Date",
        "Baptized",
        "Salvation Date",
        "Rededication Date",
    ];

	const Day = Object.freeze({
		SUNDAY: 0,
		MONDAY: 1,
		TUESDAY: 2,
		WEDNESDAY: 3,
		THURSDAY: 4,
		FRIDAY: 5,
		SATURDAY: 6,
	});

	function getLastWeekday(targetDate, day) {
		const currentWeekday = targetDate.getDay();
		const daysToSubtract = (currentWeekday - day + 7) % 7;
		const lastWeekdayDate = new Date(targetDate);
		lastWeekdayDate.setDate(targetDate.getDate() - daysToSubtract);
		return lastWeekdayDate;
	}

    function isSameDate(a, b) {
        return (
            a.getDate() === b.getDate()
            && a.getMonth() === b.getMonth()
            && a.getFullYear() === b.getFullYear()
        );
    }

    function getLastServiceDate(today, lastSunday, lastWednesday) {
        for (const date of specialDates) {
            if (
                today.getFullYear() === date.getFullYear()
                && today.getMonth() === date.getMonth()
                && today.getDate() === date.getDate()
            ) {
                return date;
            }
        }
        return new Date(Math.max(lastSunday, lastWednesday));
    }

    function delay(ms) {
        return new Promise((resolve) => setTimeout(resolve, ms));
    }


    const today = new Date();
    const lastSunday = getLastWeekday(today, Day.SUNDAY);
    const lastWednesday = getLastWeekday(today, Day.WEDNESDAY);
    const lastServiceDate = getLastServiceDate(today, lastSunday, lastWednesday);
    const buttonName = (isSameDate(today, lastServiceDate)) ? "Today" : "Last Service";
    const dateString = new Intl.DateTimeFormat("en-US", {
        month: "2-digit",
        day: "2-digit",
        year: "numeric",
    }).format(lastServiceDate);

    const yesterday = new Date();
    yesterday.setDate(yesterday.getDate() - 1);
    const dateStringYesterday = new Intl.DateTimeFormat("en-US", {
        month: "2-digit",
        day: "2-digit",
        year: "numeric",
    }).format(yesterday);

    for (const formGroup of document.querySelectorAll(".form-group")) {
        if (!fieldNames.includes(formGroup.querySelector("label")?.textContent.trim())) {
            continue;
        }
        const btn = document.createElement("button");
        btn.classList.add("nates-day-button", "last-service");
        btn.textContent = buttonName;
        btn.type = "button";
        btn.addEventListener("click", () => {
            formGroup.querySelector("input").value = dateString;
        }, { passive: true });
        formGroup.prepend(btn);
    }

    // TODO: use MutationObserver
    while (true) {
        for (const row of document.querySelectorAll(".memberEditGroupName > :nth-child(2 of div)")) {
            if (row.classList.contains("has-last-service-button")) continue;
            row.classList.add("has-last-service-button");

            const btn = document.createElement("button");
            btn.classList.add("nates-day-button", "last-service");
            btn.textContent = buttonName;
            btn.type = "button";
            btn.addEventListener("click", () => {
                row.querySelector("input").value = dateString;
            }, { passive: true });
        }
        await delay(100);
    }
})();