(function () {
    var section = document.querySelector("[data-dh-episodes]");
    if (!section) return;

    var ranges = section.querySelectorAll(".dh-range");
    var episodes = section.querySelectorAll(".dh-ep");
    if (!episodes.length) return;
    if (!ranges.length) return;

    function applyRange(start, end) {
        episodes.forEach(function (el) {
            var n = Number(el.getAttribute("data-ep"));
            var inRange = !Number.isNaN(n) && n >= start && n <= end;
            el.classList.toggle("is-range-hidden", !inRange);
        });
    }

    function activate(btn) {
        ranges.forEach(function (item) {
            item.classList.toggle("is-active", item === btn);
        });
        applyRange(Number(btn.dataset.rangeStart), Number(btn.dataset.rangeEnd));
    }

    ranges.forEach(function (btn) {
        btn.addEventListener("click", function () {
            activate(btn);
        });
    });

    var active = section.querySelector(".dh-range.is-active") || ranges[0];
    activate(active);
})();

// 简介超出行数时显示「展开 / 收起」
(function () {
    var intro = document.querySelector("[data-dh-intro]");
    var toggle = document.querySelector("[data-dh-intro-toggle]");
    if (!intro || !toggle) return;

    function sync() {
        if (intro.classList.contains("is-expanded")) return;
        toggle.hidden = intro.scrollHeight <= intro.clientHeight + 1;
    }

    toggle.addEventListener("click", function () {
        var expanded = intro.classList.toggle("is-expanded");
        toggle.textContent = expanded ? "收起" : "展开";
    });
    window.addEventListener("resize", sync);
    sync();
})();

(function () {
    var shareBtns = document.querySelectorAll("[data-detail-share]");
    if (!shareBtns.length) return;

    function toast(message, type) {
        if (typeof window.showToast === "function") {
            window.showToast(message, type);
            return;
        }
        window.alert(message);
    }

    function resolvePlayletId(btn) {
        var id = Number(btn.getAttribute("data-playlet-id") || 0);
        if (id > 0) return id;
        var host =
            btn.closest("[data-playlet-id]") ||
            document.querySelector("[data-play-player][data-playlet-id]") ||
            document.querySelector("[data-playlet-id]");
        if (host) {
            id = Number(host.getAttribute("data-playlet-id") || 0);
        }
        return id > 0 ? id : 0;
    }

    function reportForwardHeat(playletId) {
        if (!playletId || !window.HttpRequest) return;
        window.HttpRequest.post("/api/playlet/forward/heat", { id: playletId }).catch(
            function () {
                /* 加热失败不影响分享体验 */
            }
        );
    }

    function fallbackCopy(text) {
        var area = document.createElement("textarea");
        area.value = text;
        area.setAttribute("readonly", "");
        area.style.cssText = "position:fixed;left:-9999px;top:0;opacity:0;";
        document.body.appendChild(area);
        area.focus();
        area.select();
        area.setSelectionRange(0, area.value.length);
        var ok = false;
        try {
            ok = document.execCommand("copy");
        } catch (e) {
            ok = false;
        }
        document.body.removeChild(area);
        return ok;
    }

    function copyPageUrl() {
        var url = window.location.href;
        if (navigator.clipboard && navigator.clipboard.writeText && window.isSecureContext) {
            return navigator.clipboard.writeText(url).then(
                function () {
                    return true;
                },
                function () {
                    return fallbackCopy(url);
                }
            );
        }
        return Promise.resolve(fallbackCopy(url));
    }

    shareBtns.forEach(function (btn) {
        btn.addEventListener("click", function () {
            var playletId = resolvePlayletId(btn);
            copyPageUrl()
                .then(function (ok) {
                    if (ok) {
                        toast("链接已复制", "success");
                        reportForwardHeat(playletId);
                    } else {
                        toast("复制失败，请手动复制链接", "error");
                    }
                })
                .catch(function () {
                    toast("复制失败，请手动复制链接", "error");
                });
        });
    });
})();

(function () {
    // 付费剧集：不再站内解锁，统一引导下载 APP
    var lockedEpisodes = document.querySelectorAll("[data-episode-locked]");
    if (!lockedEpisodes.length) return;

    lockedEpisodes.forEach(function (el) {
        el.addEventListener("click", function (e) {
            e.preventDefault();
            if (typeof window.openDownloadApp === "function") {
                window.openDownloadApp();
            }
        });
    });
})();

(function () {
    var grid = document.querySelector("[data-related-grid]");
    var btn = document.querySelector("[data-related-refresh]");
    if (!grid || !btn) return;

    var section = document.querySelector("[data-related-section]");
    var mobileMedia = window.matchMedia && window.matchMedia("(max-width: 767px)");
    var isMobileDetail =
        document.body.classList.contains("is-detail-page") &&
        mobileMedia &&
        mobileMedia.matches;

    if (isMobileDetail) {
        var PLACEHOLDER = "/static/images/placeholder.png?v=2";
        var guessLikeData = [];
        var guessOffset = 0;
        var pageSize = 4;

        grid.textContent = "";
        btn.hidden = true;
        if (section) section.hidden = true;

        function detailHref(item) {
            var slug = String((item && item.slug) || "").trim();
            var id = Number(item && item.id);
            var key = slug || (id > 0 ? String(id) : "");
            return key ? "/detail/" + encodeURIComponent(key) + "/" : "#";
        }

        function firstCardTag(item) {
            var tags = item && Array.isArray(item.tagNames) ? item.tagNames : [];
            var themes = item && Array.isArray(item.themeNames) ? item.themeNames : [];
            return String(tags[0] || themes[0] || "热门").trim();
        }

        function setCardCover(image, rawURL, title) {
            var cover = String(rawURL || "").trim();
            image.className = "poster-cover-img";
            image.alt = title;
            image.title = title;
            image.addEventListener("error", function () {
                image.classList.remove("lazy");
                image.removeAttribute("data-src");
                image.src = PLACEHOLDER;
            }, { once: true });
            if (
                cover &&
                typeof window.shouldDecryptImage === "function" &&
                window.shouldDecryptImage(cover)
            ) {
                image.classList.add("lazy");
                image.src = PLACEHOLDER;
                image.setAttribute("data-src", cover);
                return;
            }
            image.src = cover || PLACEHOLDER;
        }

        function createGuessCard(item) {
            var card = document.createElement("a");
            var cover = document.createElement("div");
            var image = document.createElement("img");
            var episode = document.createElement("div");
            var episodeText = document.createElement("div");
            var body = document.createElement("div");
            var title = document.createElement("div");
            var subtitle = document.createElement("div");
            var meta = document.createElement("div");
            var tag = document.createElement("span");
            var titleText = String((item && item.title) || "精彩短剧");
            var totalEpisode = Math.max(0, Number(item && item.totalEpisode) || 0);

            card.className = "poster-card";
            card.href = detailHref(item);
            card.setAttribute("aria-label", titleText);
            cover.className = "poster-cover";
            episode.className = "episode-badge";
            episodeText.className = "text-white-xs";
            body.className = "poster-card-body";
            title.className = "poster-card-title";
            subtitle.className = "poster-card-subtitle";
            meta.className = "poster-card-meta";
            tag.className = "poster-card-tag";

            setCardCover(image, (item && (item.cover || item.banner)) || "", titleText);
            episodeText.textContent = totalEpisode ? totalEpisode + "集" : "更新中";
            title.textContent = titleText;
            subtitle.textContent = String((item && item.desc) || "精彩内容等你来看");
            tag.textContent = firstCardTag(item);

            episode.appendChild(episodeText);
            cover.appendChild(image);
            cover.appendChild(episode);
            meta.appendChild(tag);
            body.appendChild(title);
            body.appendChild(subtitle);
            body.appendChild(meta);
            card.appendChild(cover);
            card.appendChild(body);
            return card;
        }

        function renderMobileGuessLike() {
            var count = Math.min(pageSize, guessLikeData.length);
            grid.textContent = "";
            if (section) section.hidden = count === 0;
            btn.hidden = guessLikeData.length <= pageSize;
            for (var index = 0; index < count; index += 1) {
                grid.appendChild(
                    createGuessCard(guessLikeData[(guessOffset + index) % guessLikeData.length])
                );
            }
            if (count && typeof window.initLazyImages === "function") {
                window.initLazyImages(grid);
            }
        }

        btn.addEventListener("click", function () {
            if (guessLikeData.length > pageSize) {
                guessOffset = (guessOffset + pageSize) % guessLikeData.length;
            }
            renderMobileGuessLike();
        });

        function loadMobileGuessLike() {
            if (!window.HttpRequest || typeof window.HttpRequest.get !== "function") {
                renderMobileGuessLike();
                return;
            }
            window.HttpRequest.get("/api/playlet/hot-like")
                .then(function (response) {
                    var source = response && response.data && response.data.guessLike;
                    guessLikeData = Array.isArray(source)
                        ? source.filter(function (item) {
                            return item && (item.id || item.slug);
                        })
                        : [];
                    guessOffset = 0;
                    renderMobileGuessLike();
                })
                .catch(function () {
                    guessLikeData = [];
                    renderMobileGuessLike();
                });
        }

        if (document.readyState === "loading") {
            document.addEventListener("DOMContentLoaded", loadMobileGuessLike, { once: true });
        } else {
            loadMobileGuessLike();
        }
        return;
    }

    var cards = Array.prototype.slice.call(grid.querySelectorAll(".poster-card"));
    if (cards.length <= 6) {
        btn.hidden = true;
        return;
    }
    var pageSize = 6;
    var page = 0;

    function render() {
        var start = (page * pageSize) % cards.length;
        cards.forEach(function (card) {
            card.style.display = "none";
        });
        for (var i = 0; i < pageSize; i++) {
            var card = cards[(start + i) % cards.length];
            card.style.display = "";
            grid.appendChild(card);
        }
    }

    render();
    btn.addEventListener("click", function () {
        page += 1;
        render();
    });
})();

(function () {
    // 注意：本文件在页面底部同步加载，早于 header 中 defer 的 request.js。
    // 不能在此用 `if (!HttpRequest) return`，否则评论初始化会整段跳过。
    // 实际请求在 DOMContentLoaded（HttpRequest 已就绪）后再发起。

    var DEFAULT_AVATAR = "/static/images/avatar.png";
    var PLACEHOLDER = "/static/images/placeholder.png?v=2";

    function toast(message, type) {
        if (typeof window.showToast === "function") {
            window.showToast(message, type);
            return;
        }
        window.alert(message);
    }

    function escapeHtml(s) {
        return String(s == null ? "" : s)
            .replace(/&/g, "&amp;")
            .replace(/</g, "&lt;")
            .replace(/>/g, "&gt;")
            .replace(/"/g, "&quot;");
    }

    function formatCommentTime(raw) {
        if (!raw) return "";
        var d = new Date(raw);
        if (Number.isNaN(d.getTime())) return String(raw);
        return (
            d.getFullYear() +
            "/" +
            (d.getMonth() + 1) +
            "/" +
            d.getDate() +
            " " +
            String(d.getHours()).padStart(2, "0") +
            ":" +
            String(d.getMinutes()).padStart(2, "0")
        );
    }

    function formatRelativeTime(raw) {
        if (!raw) return "";
        var d = new Date(raw);
        if (Number.isNaN(d.getTime())) return String(raw);
        var diff = Date.now() - d.getTime();
        if (diff < 0) diff = 0;
        var minutes = Math.floor(diff / 60000);
        if (minutes < 1) return "刚刚";
        if (minutes < 60) return minutes + "分钟前";
        var hours = Math.floor(minutes / 60);
        if (hours < 24) return hours + "小时前";
        var days = Math.floor(hours / 24);
        if (days < 30) return days + "天前";
        return formatCommentTime(raw);
    }

    function avatarURL(url) {
        url = String(url || "").trim();
        return url || DEFAULT_AVATAR;
    }

    function replyToggleLabel(expanded, count) {
        count = Number(count || 0);
        if (expanded) return "收起回复";
        return "查看全部 " + count + " 条回复  ›";
    }

    function renderDetailComment(item, playPcMode) {
        var avatar = avatarURL(item.userAvatar);
        var avatarHtml = item.userAvatar
            ? '<img class="detail-comment-avatar lazy" src="' +
              PLACEHOLDER +
              '" data-src="' +
              escapeHtml(avatar) +
              '" alt="' +
              escapeHtml((item.userName || "匿名用户") + "的头像") +
              '" />'
            : '<img class="detail-comment-avatar" src="' + DEFAULT_AVATAR + '" alt="匿名用户头像" />';
        var textHtml = escapeHtml(item.text || "");
        if (item.replyUserName) {
            textHtml =
                '<span class="detail-comment-reply-to">回复 @' +
                escapeHtml(item.replyUserName) +
                "</span> " +
                textHtml;
        }
        var children = Array.isArray(item.children) ? item.children : [];
        var replyCount = Number(item.commentCount || children.length || 0);
        var repliesHtml = "";
        if (children.length) {
            var collapsed = children.length > 1;
            repliesHtml =
                '<div class="detail-comment-replies">' +
                children
                    .map(function (child, index) {
                        var childText = escapeHtml(child.text || "");
                        if (child.replyUserName) {
                            childText =
                                '<span class="detail-comment-reply-to">@' +
                                escapeHtml(child.replyUserName) +
                                "</span> " +
                                childText;
                        }
                        return (
                            '<div class="detail-comment-reply-item" data-comment-id="' +
                            escapeHtml(child.id) +
                            '"' +
                            (collapsed && index > 0
                                ? ' data-reply-collapsed-item hidden'
                                : "") +
                            ">" +
                            '<span class="detail-comment-reply-name">' +
                            escapeHtml(child.userName || "匿名用户") +
                            "：</span>" +
                            '<span class="detail-comment-reply-text">' +
                            childText +
                            "</span>" +
                            "</div>"
                        );
                    })
                    .join("") +
                (replyCount > 1
                    ? '<button class="detail-comment-replies-toggle" type="button" data-comment-replies-toggle data-reply-count="' +
                      escapeHtml(replyCount) +
                      '" aria-expanded="false">' +
                      replyToggleLabel(false, replyCount) +
                      "</button>"
                    : "") +
                "</div>";
        } else if (playPcMode && replyCount > 1) {
            repliesHtml =
                '<div class="detail-comment-replies"><button class="detail-comment-replies-toggle" type="button" data-comment-replies-toggle data-reply-count="' +
                escapeHtml(replyCount) +
                '" aria-expanded="false">' +
                replyToggleLabel(false, replyCount) +
                "</button></div>";
        }
        return (
            '<div class="detail-comment" data-comment-id="' +
            escapeHtml(item.id) +
            '">' +
            avatarHtml +
            '<div class="detail-comment-body">' +
            '<div class="detail-comment-name">' +
            escapeHtml(item.userName || "匿名用户") +
            "</div>" +
            '<div class="detail-comment-text">' +
            textHtml +
            "</div>" +
            '<div class="detail-comment-meta">' +
            '<span class="detail-comment-time">' +
            escapeHtml(formatCommentTime(item.createdAt)) +
            "</span>" +
            "</div>" +
            repliesHtml +
            "</div></div>"
        );
    }

    function renderPlayComment(item) {
        var avatar = avatarURL(item.userAvatar);
        var commentId = item.id;
        var children = Array.isArray(item.children) ? item.children : [];
        var replyCount = Number(item.commentCount || children.length || 0);
        var avatarHtml = item.userAvatar
            ? '<img class="play-comment-avatar lazy" src="' +
              PLACEHOLDER +
              '" data-src="' +
              escapeHtml(avatar) +
              '" alt="' +
              escapeHtml((item.userName || "匿名用户") + "的头像") +
              '" />'
            : '<img class="play-comment-avatar" src="' + DEFAULT_AVATAR + '" alt="匿名用户头像" />';
        var textHtml = escapeHtml(item.text || "");
        if (item.replyUserName) {
            textHtml =
                '<span class="play-comment-reply-to">回复 @' +
                escapeHtml(item.replyUserName) +
                "</span> " +
                textHtml;
        }
        var repliesHtml = "";
        if (children.length) {
            repliesHtml =
                '<div class="play-comment-replies">' +
                children
                    .map(function (child) {
                        return (
                            '<div class="play-comment-reply-line" data-comment-id="' +
                            escapeHtml(child.id) +
                            '">' +
                            '<span class="play-comment-reply-name">' +
                            escapeHtml(child.userName || "匿名用户") +
                            "</span>" +
                            (child.replyUserName
                                ? '<span class="play-comment-reply-badge">回复</span><span class="play-comment-reply-name">' +
                                  escapeHtml(child.replyUserName) +
                                  "</span>"
                                : "") +
                            '<span class="play-comment-reply-text">' +
                            escapeHtml(child.text || "") +
                            "</span>" +
                            "</div>"
                        );
                    })
                    .join("") +
                (replyCount > children.length
                    ? '<button class="play-comment-replies-all" type="button" data-comment-replies="' +
                      escapeHtml(commentId) +
                      '">全部' +
                      escapeHtml(replyCount) +
                      "条评论</button>"
                    : "") +
                "</div>";
        } else if (replyCount > 0) {
            repliesHtml =
                '<button class="play-comment-more-replies" type="button" data-comment-replies="' +
                escapeHtml(commentId) +
                '">全部' +
                escapeHtml(replyCount) +
                '条评论<img src="/static/images/arrow_right.svg" alt="查看回复" /></button>';
        }
        return (
            '<div class="play-comment-item" data-comment-id="' +
            escapeHtml(commentId) +
            '">' +
            avatarHtml +
            '<div class="play-comment-body">' +
            '<div class="play-comment-name">' +
            escapeHtml(item.userName || "匿名用户") +
            "</div>" +
            '<div class="play-comment-text">' +
            textHtml +
            "</div>" +
            '<div class="play-comment-meta">' +
            '<div class="play-comment-meta-left">' +
            '<span class="play-comment-time">' +
            escapeHtml(formatRelativeTime(item.createdAt)) +
            "</span>" +
            "</div>" +
            "</div>" +
            repliesHtml +
            "</div></div>"
        );
    }

    function renderComment(item, sheetMode, playPcMode) {
        return sheetMode
            ? renderPlayComment(item)
            : renderDetailComment(item, playPcMode);
    }

    function triggerLazy(root) {
        if (typeof window.initLazyImages === "function") {
            window.initLazyImages(root || document);
            return;
        }
        if (typeof window.__lazyLoadImages === "function") {
            window.__lazyLoadImages();
            return;
        }
        if (window.LazyLoad && typeof window.LazyLoad.update === "function") {
            window.LazyLoad.update();
        }
    }

    function initCommentSection(section) {
        // PC 播放页评论区仅桌面初始化；H5 sheet 始终初始化（避免宽屏加载后缩到手机仍卡在「加载中」）
        if (section.classList.contains("play-comments")) {
            if (window.matchMedia("(max-width: 767px)").matches) return;
        }

        var sheetRoot = section.closest("[data-play-comment-sheet]");
        var sheetMode = !!sheetRoot || section.classList.contains("play-comment-sheet-body");
        var playPcMode = section.classList.contains("play-comments");
        var scope = sheetRoot || section;
        var listEl = section.querySelector("[data-comment-list]");
        var moreBtn = section.querySelector("[data-comment-more]");
        var titleEl = section.querySelector("[data-comment-title]");
        var sortBtns = scope.querySelectorAll("[data-comment-sort]");
        var sheetTitle = sheetRoot
            ? sheetRoot.querySelector("[data-play-comment-title]")
            : document.querySelector("[data-play-comment-title]");
        var sideCount = document.querySelector("[data-play-comment-count]");

        if (section.getAttribute("data-comment-inited") === "1") return;
        section.setAttribute("data-comment-inited", "1");

        var objectType = Number(section.getAttribute("data-comment-object-type") || 10);
        var pageSize = Number(section.getAttribute("data-comment-size") || 10);
        var sortDefault = Number(section.getAttribute("data-comment-sort-default") || 0);
        var sortOrder = sortDefault === 2 || sortDefault === 1 ? sortDefault : sheetMode ? 2 : 1;
        var page = 0;
        var total = 0;
        var loading = false;

        function getObjectId() {
            return Number(section.getAttribute("data-comment-object-id") || 0);
        }

        function commentItemSelector() {
            return sheetMode ? ".play-comment-item" : ".detail-comment";
        }

        function updateTitleCount() {
            if (titleEl) {
                titleEl.textContent = total > 0 ? "评论 (" + total + ")" : "评论";
            }
            if (sheetTitle) {
                sheetTitle.textContent = total > 0 ? total + "条评论" : "评论";
            }
            if (sideCount) {
                sideCount.textContent = String(total);
            }
        }

        function syncSortActive() {
            sortBtns.forEach(function (item) {
                var active = Number(item.getAttribute("data-comment-sort")) === sortOrder;
                item.classList.toggle("detail-sort-btn--active", active);
                item.classList.toggle("play-comment-sort-btn--active", active);
            });
        }

        function setMoreVisible(show) {
            if (!moreBtn) return;
            if (show) {
                moreBtn.hidden = false;
                moreBtn.removeAttribute("hidden");
                moreBtn.disabled = false;
            } else {
                moreBtn.hidden = true;
                moreBtn.setAttribute("hidden", "");
                moreBtn.disabled = false;
            }
        }

        function showEmpty(text) {
            var emptyClass = sheetMode
                ? "section-empty play-comment-empty"
                : "section-empty";
            listEl.innerHTML =
                '<div class="' +
                emptyClass +
                '" data-comment-empty>' +
                escapeHtml(text || "暂无评论") +
                "</div>";
            setMoreVisible(false);
        }

        function fetchPage(nextPage, replace) {
            var objectId = getObjectId();
            if (!objectId || loading) return Promise.resolve();
            // detail.js 若早于 defer 的 request.js 执行，直接 get 会同步抛错且 loading 无法复位
            if (!window.HttpRequest || typeof window.HttpRequest.get !== "function") {
                if (replace) showEmpty("加载失败，请稍后重试");
                return Promise.resolve();
            }
            loading = true;
            if (moreBtn) moreBtn.disabled = true;
            return window.HttpRequest.get("/api/comment/list", {
                params: {
                    objectId: objectId,
                    objectType: objectType,
                    pageNum: nextPage,
                    pageSize: pageSize,
                    sortOrder: sortOrder,
                },
            })
                .then(function (res) {
                    if (!res || res.code !== 200 || !res.data) {
                        throw new Error((res && (res.tip || res.msg)) || "加载失败");
                    }
                    var rows = res.data.list || [];
                    total = Number(res.data.totalCount != null ? res.data.totalCount : total);
                    page = Number(res.data.pageNum || nextPage);
                    updateTitleCount();

                    if (replace) {
                        if (!rows.length) {
                            showEmpty("暂无评论");
                            return;
                        }
                        listEl.innerHTML = rows
                            .map(function (row) {
                                return renderComment(row, sheetMode, playPcMode);
                            })
                            .join("");
                    } else if (rows.length) {
                        var empty = listEl.querySelector(
                            "[data-comment-empty],[data-comment-loading]"
                        );
                        if (empty) empty.remove();
                        listEl.insertAdjacentHTML(
                            "beforeend",
                            rows
                                .map(function (row) {
                                    return renderComment(row, sheetMode, playPcMode);
                                })
                                .join("")
                        );
                    }

                    triggerLazy(listEl);
                    var loaded = listEl.querySelectorAll(commentItemSelector()).length;
                    var hasMore =
                        rows.length > 0 &&
                        rows.length >= pageSize &&
                        (total <= 0 || loaded < total);
                    setMoreVisible(hasMore);
                })
                .catch(function (err) {
                    if (replace || !listEl.querySelector(commentItemSelector())) {
                        showEmpty((err && err.message) || "加载失败，请稍后重试");
                    } else {
                        toast((err && err.message) || "加载失败，请稍后重试", "error");
                        if (moreBtn) moreBtn.disabled = false;
                    }
                })
                .finally(function () {
                    loading = false;
                });
        }

        syncSortActive();

        sortBtns.forEach(function (btn) {
            btn.addEventListener("click", function () {
                var next = Number(btn.getAttribute("data-comment-sort") || 1);
                if (next === sortOrder || loading) return;
                sortOrder = next;
                syncSortActive();
                listEl.innerHTML =
                    '<div class="section-empty' +
                    (sheetMode ? " play-comment-empty" : "") +
                    '" data-comment-loading>评论加载中…</div>';
                setMoreVisible(false);
                fetchPage(1, true);
            });
        });

        if (scope) {
            scope.addEventListener("click", function (e) {
                var repliesToggle =
                    e.target && e.target.closest
                        ? e.target.closest("[data-comment-replies-toggle]")
                        : null;
                if (!repliesToggle || !scope.contains(repliesToggle)) return;
                e.preventDefault();
                var repliesBox = repliesToggle.closest(".detail-comment-replies");
                if (!repliesBox) return;
                var expanded = repliesToggle.getAttribute("aria-expanded") === "true";
                expanded = !expanded;
                repliesToggle.setAttribute("aria-expanded", expanded ? "true" : "false");
                repliesToggle.textContent = replyToggleLabel(
                    expanded,
                    repliesToggle.getAttribute("data-reply-count")
                );
                var hiddenItems = repliesBox.querySelectorAll("[data-reply-collapsed-item]");
                Array.prototype.forEach.call(hiddenItems, function (el) {
                    el.hidden = !expanded;
                });
            });
        }

        if (moreBtn) {
            moreBtn.addEventListener("click", function () {
                fetchPage(page + 1, false);
            });
        }

        if (!listEl || !getObjectId()) {
            if (listEl) showEmpty("暂无评论");
            return;
        }

        section.addEventListener("play:reload-comments", function () {
            listEl.innerHTML =
                '<div class="section-empty' +
                (sheetMode ? " play-comment-empty" : "") +
                '" data-comment-loading>评论加载中…</div>';
            setMoreVisible(false);
            fetchPage(1, true);
        });

        fetchPage(1, true);
    }

    // 等 DOMContentLoaded：保证 header 中 defer 的 request.js 已执行
    function bootCommentSections() {
        if (!window.HttpRequest || typeof window.HttpRequest.get !== "function") {
            // 极端情况：再等 window.load 一次
            if (!bootCommentSections._retried) {
                bootCommentSections._retried = true;
                window.addEventListener("load", bootCommentSections, { once: true });
            }
            return;
        }
        document.querySelectorAll(".detail-comments").forEach(initCommentSection);
    }
    if (document.readyState === "loading") {
        document.addEventListener("DOMContentLoaded", bootCommentSections, { once: true });
    } else {
        bootCommentSections();
    }
})();

/** H5 返回：避免 play ↔ detail 互相压栈导致死循环 */
(function () {
    var nodes = document.querySelectorAll("[data-nav-back], .play-h5-back, .detail-h5-back");
    if (!nodes.length) return;

    function pathOf(url) {
        try {
            return new URL(url, window.location.origin).pathname || "";
        } catch (e) {
            return "";
        }
    }

    function isPlayPath(pathname) {
        return pathname === "/play";
    }

    function isDetailPath(pathname) {
        return pathname === "/detail";
    }

    function resolveFallback(el) {
        var fallback = el.getAttribute("data-nav-fallback") || "";
        if (fallback) return fallback;
        var href = el.getAttribute("href") || "";
        if (href && href.indexOf("javascript:") !== 0) return href;
        return "/";
    }

    nodes.forEach(function (el) {
        el.addEventListener("click", function (e) {
            var fallback = resolveFallback(el);
            var ref = document.referrer || "";
            var sameOrigin = !!ref && ref.indexOf(window.location.origin) === 0;
            var refPath = sameOrigin ? pathOf(ref) : "";
            var here = window.location.pathname || "";

            // 详情页若上一页是播放页，history.back 会回到播放页形成循环
            if (isDetailPath(here) && isPlayPath(refPath)) {
                e.preventDefault();
                window.location.href = fallback || "/";
                return;
            }

            // 播放页：有同站来源时回退历史（通常回到详情），否则走详情/首页兜底
            if (isPlayPath(here)) {
                e.preventDefault();
                if (sameOrigin && refPath && ref !== window.location.href) {
                    window.history.back();
                    return;
                }
                window.location.href = fallback || "/";
                return;
            }

            // 其它带 data-nav-back 的页面
            if (sameOrigin && refPath && ref !== window.location.href) {
                e.preventDefault();
                window.history.back();
                return;
            }

            var href = el.getAttribute("href") || "";
            if (!href || href.indexOf("javascript:") === 0) {
                e.preventDefault();
                window.location.href = fallback || "/";
            }
        });
    });
})();