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.

Bu betiği kurabilmeniz için Tampermonkey, Greasemonkey ya da Violentmonkey gibi bir kullanıcı betiği eklentisini kurmanız gerekmektedir.

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

Bu betiği kurabilmeniz için Tampermonkey ya da Violentmonkey gibi bir kullanıcı betiği eklentisini kurmanız gerekmektedir.

Bu betiği kurabilmeniz için Tampermonkey ya da Userscripts gibi bir kullanıcı betiği eklentisini kurmanız gerekmektedir.

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

Bu komut dosyasını yüklemek için bir kullanıcı komut dosyası yöneticisi uzantısı yüklemeniz gerekecek.

(Zaten bir kullanıcı komut dosyası yöneticim var, kurmama izin verin!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Zateb bir user-style yöneticim var, yükleyeyim!)

// ==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);
    }
})();