script

// Drafts用 日付入力スクリプト

/**
 * 日付ショートカットの解析
 * @param {string} input - 入力文字列 (例: "3.", ">0", "<6", "25", "4/14")
 */
function parseDateShorthand(input) {
    const today = new Date();
    let targetDate = new Date(today.getFullYear(), today.getMonth(), today.getDate());
    
    if (input === "." || input === "0") {
        return targetDate;
    }

    const afterMatch = /^(\d+)\.$/.exec(input);
    const beforeMatch = /^\.(\d+)$/.exec(input);

    const nextDowMatch = /^([>]+)([0-6])$/.exec(input);
    const prevDowMatch = /^([<]+)([0-6])$/.exec(input);
    const fullDateMatch = /^(\d{2,4})\/(\d{1,2})\/(\d{1,2})$/.exec(input);
    const monthDayMatch = /^(\d{1,2})\/(\d{1,2})$/.exec(input);
    const onlyNumber = /^(\d+)$/.exec(input);

    if (afterMatch) {
        targetDate.setDate(targetDate.getDate() + parseInt(afterMatch[1]));
    } else if (beforeMatch) {
        targetDate.setDate(targetDate.getDate() - parseInt(beforeMatch[1]));
    } else if (nextDowMatch) {
        const extraWeeks = nextDowMatch[1].length - 1; 
        const targetDOW = parseInt(nextDowMatch[2]); 
        const currentDOW = targetDate.getDay();
        let daysToAdd = (targetDOW - currentDOW + 7) % 7;
        if (daysToAdd === 0) daysToAdd = 7; 
        targetDate.setDate(targetDate.getDate() + daysToAdd + (extraWeeks * 7));
    } else if (prevDowMatch) {
        const extraWeeks = prevDowMatch[1].length - 1; 
        const targetDOW = parseInt(prevDowMatch[2]); 
        const currentDOW = targetDate.getDay();
        let daysToSub = (currentDOW - targetDOW + 7) % 7;
        if (daysToSub === 0) daysToSub = 7; 
        targetDate.setDate(targetDate.getDate() - (daysToSub + (extraWeeks * 7)));
    } else if (fullDateMatch) {
        let year = parseInt(fullDateMatch[1]);
        if (year < 100) year += 2000;
        targetDate = new Date(year, parseInt(fullDateMatch[2]) - 1, parseInt(fullDateMatch[3]));
    } else if (monthDayMatch) {
        targetDate = new Date(today.getFullYear(), parseInt(monthDayMatch[1]) - 1, parseInt(monthDayMatch[2]));
    } else if (onlyNumber) {
        targetDate.setDate(parseInt(onlyNumber[1]));
    } else {
        return null;
    }
    return targetDate;
}

function formatDateJapanese(date) {
    const days = ["日", "月", "火", "水", "木", "金", "土"];
    return `${date.getMonth() + 1}月${date.getDate()}日（${days[date.getDay()]}）`;
}

const p = Prompt.create();
p.title = "日付入力";

p.message = "当日: . または 0\n曜日: >0(次日) / >6(次土) / <0(前日)\n相対日: 3. (後) / .3 (前)\n連続: .*3 (今日から3日間)";

p.addTextField("shorthand", "入力", "", {
    "keyboard": "numbersAndPunctuation",
    "wantsFocus": true
});
p.addButton("挿入");

if (p.show()) {
    let input = p.fieldValues["shorthand"].trim();
    let baseInput = input;
    let repeatCount = 1;
    const repeatMatch = input.match(/^(.*?)\*(\d+)$/);
    if (repeatMatch) {
        baseInput = repeatMatch[1];
        repeatCount = parseInt(repeatMatch[2], 10);
    }

    const resultDate = parseDateShorthand(baseInput);
    if (resultDate && !isNaN(resultDate.getTime())) {
        let resultStrings = [];
        for (let i = 0; i < repeatCount; i++) {
            let d = new Date(resultDate.getTime());
            d.setDate(d.getDate() + i);
            resultStrings.push(formatDateJapanese(d));
        }
        editor.setSelectedText(resultStrings.join("\n"));
    } else {
        app.displayWarningMessage("無効な入力です");
    }
}