// ==UserScript==
// @name         TMDB 한국 지원 강화
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  TMDB 영화/TV 시리즈 페이지에 한국어, 영어, 원어 제목 추가, 개별 클립보드 복사 기능 및 한국 시청등급 표시
// @match        https://www.themoviedb.org/*
// @grant        GM_xmlhttpRequest
// @grant        GM_addStyle
// @author       DongHaerang
// @downloadURL none
// ==/UserScript==

// 주의사항: 아래 YOUR_API_KEY 부분을 실제 TMDB API 키로 교체하는 것을 잊지 마세요.
const apiKey = "YOUR_API_KEY";

(function() {
    'use strict';

    GM_addStyle(`
        .additional-titles { font-size: 1.1em; line-height: 1.4; }
        .additional-title { cursor: pointer; transition: color 0.3s; }
        .additional-title:hover { color: blue !important; }
    `);

    const copyToClipboard = text => {
        navigator.clipboard.writeText(text).then(() => {
            showTemporaryMessage(`${text} 클립보드에 복사됨`);
        });
    };

    const showTemporaryMessage = message => {
        const messageElement = document.createElement('div');
        Object.assign(messageElement.style, {
            position: 'fixed', top: '10px', left: '50%', transform: 'translateX(-50%)',
            backgroundColor: 'rgba(0, 0, 0, 0.7)', color: 'white', padding: '10px',
            borderRadius: '5px', zIndex: '9999'
        });
        messageElement.textContent = message;
        document.body.appendChild(messageElement);
        setTimeout(() => document.body.removeChild(messageElement), 1000);
    };

    const getIdAndType = () => {
        const [, type, id] = window.location.pathname.split('/');
        return { id, type };
    };

    const fetchData = async () => {
        const { id, type } = getIdAndType();
        const appendToResponse = type === 'movie' ? 'release_dates' : 'content_ratings';
        const urls = [
            `https://api.themoviedb.org/3/${type}/${id}?api_key=${apiKey}&language=ko-KR&append_to_response=${appendToResponse}`,
            `https://api.themoviedb.org/3/${type}/${id}?api_key=${apiKey}&language=en-US`
        ];

        try {
            const [dataKo, dataEn] = await Promise.all(urls.map(url => 
                new Promise((resolve, reject) => {
                    GM_xmlhttpRequest({
                        method: "GET",
                        url: url,
                        onload: response => response.status === 200 ? resolve(JSON.parse(response.responseText)) : reject(`API 요청 실패: ${response.status}`),
                        onerror: reject
                    });
                })
            ));

            const koTitle = dataKo.title || dataKo.name || '한국어 제목 미기재';
            const enTitle = dataEn.title || dataEn.name || '영어 제목 미기재';
            const originalTitle = dataKo.original_title || dataKo.original_name || '원어 제목 미기재';
            const koreanRating = getKoreanCertification(dataKo, type);

            displayTitles(koTitle, enTitle, originalTitle);
            displayKoreanRating(koreanRating);
        } catch (error) {
            console.error('TMDB API 요청 오류:', error);
        }
    };

    const displayTitles = (koTitle, enTitle, originalTitle) => {
        const titleElement = document.querySelector('.title h2');
        if (!titleElement) return;

        const titleContainer = document.createElement('div');
        titleContainer.className = 'additional-titles';
        titleContainer.style.margin = '10px 0';
        titleContainer.innerHTML = `
            <span class="label">한제: </span><span class="additional-title ko-title">${koTitle}</span>   /   
            <span class="label">영제: </span><span class="additional-title en-title">${enTitle}</span>   /   
            <span class="label">원제: </span><span class="additional-title original-title">${originalTitle}</span>
        `;

        titleElement.parentNode.insertBefore(titleContainer, titleElement);

        ['ko-title', 'en-title', 'original-title'].forEach(className => {
            titleContainer.querySelector(`.${className}`).addEventListener('click', function() {
                copyToClipboard(this.textContent);
            });
        });
    };

    const getKoreanCertification = (data, type) => {
        const ratings = type === 'movie' ? data.release_dates?.results : data.content_ratings?.results;
        const koreanRating = ratings?.find(r => r.iso_3166_1 === 'KR')?.release_dates?.[0]?.certification || 
                             ratings?.find(r => r.iso_3166_1 === 'KR')?.rating;
        return koreanRating || '등급미정';
    };

    const displayKoreanRating = rating => {
        const factsElement = document.querySelector('.facts');
        if (!factsElement) return;

        let koreanRatingElement = document.getElementById('korean-rating');
        if (!koreanRatingElement) {
            koreanRatingElement = Object.assign(document.createElement('span'), {
                id: 'korean-rating',
                style: 'font-size: 1em; margin-right: 10px; font-weight: bold;'
            });
            factsElement.insertBefore(koreanRatingElement, factsElement.firstChild);
        }
        koreanRatingElement.textContent = rating;
    };

    const init = () => fetchData();

    window.addEventListener('load', init);

    new MutationObserver(() => {
        const url = location.href;
        if (url !== lastUrl) {
            lastUrl = url;
            init();
        }
    }).observe(document, {subtree: true, childList: true});

    let lastUrl = location.href;
})();