(function () {
    'use strict';

    var rootData = window.aksrtData || {};
    var restRoot = (function () {
        var siteUrl = String(rootData.siteUrl || '/').replace(/\/+$/, '');
        return siteUrl + '/wp-json/aksrt/v1';
    })();

    function request(path, options) {
        var config = options || {};
        var headers = config.headers || {};

        return fetch(restRoot + path, {
            method: config.method || 'GET',
            headers: Object.assign({
                'Content-Type': 'application/json',
                'X-WP-Nonce': rootData.restNonce || '',
            }, headers),
            body: config.body || null,
            credentials: 'same-origin',
        }).then(function (response) {
            return response.json().catch(function () {
                return {};
            }).then(function (payload) {
                if (!response.ok || payload.success === false) {
                    throw new Error(payload.message || ('HTTP ' + response.status));
                }
                return payload;
            });
        });
    }

    function setFeedback(node, text, state) {
        if (!node) {
            return;
        }

        node.textContent = text || '';
        node.classList.remove('is-success', 'is-error', 'is-loading');
        if (state) {
            node.classList.add(state);
        }
    }

    function bindComposeToolbar(form) {
        // §7.4: toolbar replaced by wp_editor TinyMCE — no-op stub kept for boot() compat
    }

    function insertTextAtCursor(textarea, text, after, start, end) {
        var value = textarea.value;
        textarea.value = value.substring(0, start) + text + (after || '') + value.substring(end);
        textarea.focus();
    }

    function askUrlInline(anchor, placeholder, callback) {
        // kept for potential quicktags fallback
        var existing = document.querySelector('.aksrt-inline-url-input');
        if (existing) existing.remove();

        var input = document.createElement('input');
        input.type = 'url';
        input.className = 'aksrt-inline-url-input';
        input.placeholder = placeholder || 'https://';
        input.value = 'https://';
        input.style.cssText = 'display:block;width:100%;max-width:320px;margin:4px 0;padding:6px 10px;border:1px solid #dce3ec;border-radius:8px;font-size:13px;';

        var parent = anchor.parentElement;
        parent.insertBefore(input, anchor.nextSibling);
        input.focus();
        input.select();

        function done() {
            var val = input.value.trim();
            input.remove();
            callback(val);
        }

        input.addEventListener('keydown', function (e) {
            if (e.key === 'Enter') { e.preventDefault(); done(); }
            if (e.key === 'Escape') { input.remove(); callback(''); }
        });
        input.addEventListener('blur', function () { done(); });
    }

    function bindComposeVoteToggle(form) {
        var toggle = form.querySelector('#compose-vote-enabled');
        var fields = form.querySelector('.aksrt-forum-compose__vote-fields');
        if (!toggle || !fields) {
            return;
        }

        function sync() {
            fields.hidden = !toggle.checked;
        }

        toggle.addEventListener('change', sync);
        sync();
    }

    function getEditorContent() {
        if (typeof tinymce !== 'undefined') {
            var editor = tinymce.get('compose-content');
            if (editor && !editor.isHidden()) {
                return editor.getContent();
            }
        }
        var textarea = document.querySelector('#compose-content');
        return textarea ? textarea.value : '';
    }

    function bindComposeDraft(form) {
        var draftButton = form.querySelector('#compose-draft');
        var feedback = form.querySelector('.js-aksrt-action-feedback');
        var ajaxUrl = form.getAttribute('data-ajax');
        var nonce = form.getAttribute('data-nonce');

        if (!draftButton || !ajaxUrl || !nonce) {
            return;
        }

        draftButton.addEventListener('click', function () {
            draftButton.disabled = true;
            setFeedback(feedback, '正在保存草稿…', 'is-loading');

            var data = new FormData(form);
            data.set('content', getEditorContent());
            data.append('action', 'aksrt_forum_save_draft');
            data.append('_nonce', nonce);

            var draftId = form.getAttribute('data-draft-id') || '0';
            if (draftId && draftId !== '0') {
                data.append('draft_id', draftId);
            }

            fetch(ajaxUrl, {
                method: 'POST',
                body: data,
                credentials: 'same-origin',
            }).then(function (r) { return r.json(); }).then(function (payload) {
                if (!payload.success) {
                    throw new Error((payload.data && payload.data.message) || '保存失败');
                }
                if (payload.data && payload.data.post_id) {
                    form.setAttribute('data-draft-id', String(payload.data.post_id));
                }
                setFeedback(feedback, payload.data.message || '草稿已保存', 'is-success');
                draftButton.disabled = false;
            }).catch(function (error) {
                setFeedback(feedback, error.message || '保存失败', 'is-error');
                draftButton.disabled = false;
            });
        });
    }

    function bindComposeSubmit(form) {
        var submitButton = form.querySelector('#compose-submit');
        var feedback = form.querySelector('.js-aksrt-action-feedback');
        var ajaxUrl = form.getAttribute('data-ajax');
        var nonce = form.getAttribute('data-nonce');

        if (!submitButton || !ajaxUrl || !nonce) {
            return;
        }

        form.addEventListener('submit', function (event) {
            event.preventDefault();

            var board = form.querySelector('#compose-board') || form.querySelector('[name="board_id"]');
            var title = form.querySelector('#compose-title');
            var content = getEditorContent();

            if (!board || !board.value || !title || !title.value.trim() || !content.trim()) {
                setFeedback(feedback, '请填写版块、标题和主题内容。', 'is-error');
                return;
            }

            submitButton.disabled = true;
            setFeedback(feedback, '正在提交主题…', 'is-loading');

            var data = new FormData(form);
            data.set('content', content);
            data.append('action', 'aksrt_forum_create_topic');
            data.append('_nonce', nonce);

            var draftId = form.getAttribute('data-draft-id') || '0';
            if (draftId && draftId !== '0') {
                data.append('draft_id', draftId);
            }

            fetch(ajaxUrl, {
                method: 'POST',
                body: data,
                credentials: 'same-origin',
            }).then(function (response) {
                return response.json();
            }).then(function (payload) {
                if (!payload.success) {
                    throw new Error((payload.data && payload.data.message) || '提交失败');
                }

                if (payload.data && payload.data.redirect) {
                    window.location.href = payload.data.redirect;
                    return;
                }

                setFeedback(feedback, (payload.data && payload.data.message) || '主题已提交。', 'is-success');
            }).catch(function (error) {
                setFeedback(feedback, error.message || '提交失败，请稍后重试。', 'is-error');
                submitButton.disabled = false;
            });
        });
    }

    function bindModeratorApplyForm(form) {
        var feedback = form.querySelector('.js-aksrt-action-feedback');
        var submitButton = form.querySelector('button[type="submit"]');

        form.addEventListener('submit', function (event) {
            event.preventDefault();

            var boardId = parseInt(form.getAttribute('data-board-id') || '0', 10);
            var reasonField = form.querySelector('[name="reason"]');
            var reason = reasonField ? reasonField.value.trim() : '';

            if (!boardId || !reason) {
                setFeedback(feedback, '请填写完整的申请理由。', 'is-error');
                return;
            }

            if (submitButton) {
                submitButton.disabled = true;
            }
            setFeedback(feedback, '正在提交申请…', 'is-loading');

            request('/forum/moderator/apply', {
                method: 'POST',
                body: JSON.stringify({
                    board_id: boardId,
                    reason: reason,
                }),
            }).then(function (payload) {
                setFeedback(feedback, payload.message || '申请已提交', 'is-success');
                if (submitButton) submitButton.disabled = true;
                // Disable the form to prevent re-submission
                var reasonField = form.querySelector('[name="reason"]');
                if (reasonField) reasonField.disabled = true;
            }).catch(function (error) {
                setFeedback(feedback, error.message || '申请提交失败。', 'is-error');
                if (submitButton) {
                    submitButton.disabled = false;
                }
            });
        });
    }

    function bindVoteForm(form) {
        var feedback = form.querySelector('.js-aksrt-action-feedback');
        var submitButton = form.querySelector('button[type="submit"]');

        form.addEventListener('submit', function (event) {
            event.preventDefault();

            var topicId = parseInt(form.getAttribute('data-topic-id') || '0', 10);
            var checked = Array.prototype.slice.call(form.querySelectorAll('input[name="option_ids[]"]:checked')).map(function (input) {
                return input.value;
            });

            if (!topicId || checked.length === 0) {
                setFeedback(feedback, '请选择至少一个投票选项。', 'is-error');
                return;
            }

            if (submitButton) {
                submitButton.disabled = true;
            }
            setFeedback(feedback, '正在提交投票…', 'is-loading');

            request('/forum/topics/' + topicId + '/vote', {
                method: 'POST',
                body: JSON.stringify({ option_ids: checked }),
            }).then(function (payload) {
                setFeedback(feedback, payload.message || '投票成功', 'is-success');
                // Disable all checkboxes and submit after vote
                var checkboxes = form.querySelectorAll('input[type="checkbox"]');
                for (var i = 0; i < checkboxes.length; i++) checkboxes[i].disabled = true;
                if (submitButton) submitButton.disabled = true;
            }).catch(function (error) {
                setFeedback(feedback, error.message || '投票失败。', 'is-error');
                if (submitButton) {
                    submitButton.disabled = false;
                }
            });
        });
    }

    function buildModerationPayload(form, action) {
        var noteField = form.querySelector('[name="note"]');
        var payload = {
            action: action,
            note: noteField ? noteField.value.trim() : '',
        };

        if (action === 'review') {
            payload.review_status = (form.querySelector('[name="review_status"]') || {}).value || '';
        } else if (action === 'move_board') {
            payload.target_board_id = parseInt((form.querySelector('[name="target_board_id"]') || {}).value || '0', 10);
        } else if (action === 'visibility') {
            payload.visibility = (form.querySelector('[name="visibility"]') || {}).value || '';
            if (payload.visibility === 'credits') {
                payload.credits_cost = parseInt((form.querySelector('[name="credits_cost"]') || {}).value || '0', 10);
            } else if (payload.visibility === 'pay') {
                payload.pay_price = (form.querySelector('[name="pay_price"]') || {}).value || '';
            } else if (payload.visibility === 'role') {
                payload.visibility_roles = Array.prototype.slice.call(form.querySelectorAll('[name="visibility_roles[]"] option:checked')).map(function (option) {
                    return option.value;
                });
            }
        } else if (action === 'sticky') {
            // 置顶分级（§7.3）：发送 0~3 整数，而非布尔值。
            payload.value = parseInt((form.querySelector('[name="sticky_value"]') || {}).value || '0', 10);
        } else if (action === 'question_status') {
            payload.value = parseInt((form.querySelector('[name="question_status_value"]') || {}).value || '0', 10);
        } else if (action === 'delete' || action === 'undelete') {
            payload.value = true;
        } else {
            var valueFieldName = action + '_value';
            payload.value = ((form.querySelector('[name="' + valueFieldName + '"]') || {}).value || '0') === '1';
        }

        return payload;
    }

    function bindModerationFieldToggle(form) {
        var actionField = form.querySelector('.js-aksrt-moderation-action');
        var groups = form.querySelectorAll('.js-aksrt-moderation-field');
        var visibilitySelect = form.querySelector('[name="visibility"]');
        var visibilityExtras = form.querySelectorAll('.js-aksrt-visibility-extra');
        if (!actionField || !groups.length) {
            return;
        }

        function syncVisibilityExtras() {
            if (!visibilitySelect || !visibilityExtras.length) {
                return;
            }
            var visibility = visibilitySelect.value;
            visibilityExtras.forEach(function (group) {
                group.hidden = actionField.value !== 'visibility' || group.getAttribute('data-visibility-field') !== visibility;
            });
        }

        function sync() {
            var action = actionField.value;
            groups.forEach(function (group) {
                var fieldName = group.getAttribute('data-field');
                if (group.classList.contains('js-aksrt-visibility-extra')) {
                    return;
                }
                group.hidden = fieldName !== action;
            });
            syncVisibilityExtras();
        }

        actionField.addEventListener('change', sync);
        if (visibilitySelect) {
            visibilitySelect.addEventListener('change', syncVisibilityExtras);
        }
        sync();
    }

    function bindModerationForm(form) {
        var feedback = form.querySelector('.js-aksrt-action-feedback');
        var submitButton = form.querySelector('button[type="submit"]');
        bindModerationFieldToggle(form);

        form.addEventListener('submit', function (event) {
            event.preventDefault();

            var topicId = parseInt(form.getAttribute('data-topic-id') || '0', 10);
            var actionField = form.querySelector('.js-aksrt-moderation-action');
            var action = actionField ? actionField.value : '';
            if (!topicId || !action) {
                setFeedback(feedback, '请选择治理动作。', 'is-error');
                return;
            }

            if (submitButton) {
                submitButton.disabled = true;
            }
            if (action === 'delete' && !window.confirm('确认将该主题移入回收站吗？')) {
                if (submitButton) submitButton.disabled = false;
                return;
            }
            if (action === 'undelete' && !window.confirm('确认恢复该主题吗？')) {
                if (submitButton) submitButton.disabled = false;
                return;
            }
            setFeedback(feedback, '正在执行治理动作…', 'is-loading');

            request('/forum/topics/' + topicId + '/moderate', {
                method: 'POST',
                body: JSON.stringify(buildModerationPayload(form, action)),
            }).then(function (payload) {
                setFeedback(feedback, payload.message || '治理动作已执行', 'is-success');
                if (submitButton) submitButton.disabled = true;
            }).catch(function (error) {
                setFeedback(feedback, error.message || '治理动作执行失败。', 'is-error');
                if (submitButton) {
                    submitButton.disabled = false;
                }
            });
        });
    }

    function bindQuickTopicAction(button) {
        button.addEventListener('click', function () {
            var topicId = parseInt(button.getAttribute('data-topic-id') || '0', 10);
            var action = button.getAttribute('data-action') || '';
            var rawValue = button.getAttribute('data-value') || '0';
            var valueType = button.getAttribute('data-value-type') || 'bool';
            // 置顶分级（§7.3）：data-value-type="int" 时发送整数级别，否则发送布尔值。
            var value = valueType === 'int' ? parseInt(rawValue, 10) : rawValue === '1';

            if (!topicId || !action) {
                return;
            }

            button.disabled = true;
            request('/forum/topics/' + topicId + '/moderate', {
                method: 'POST',
                body: JSON.stringify({
                    action: action,
                    value: value,
                }),
            }).then(function () {
                // Toggle button visual state instead of reloading
                var icon = button.querySelector('i');
                if (valueType === 'int' ? value > 0 : value) {
                    button.classList.add('is-active');
                    if (icon) icon.className = icon.className.replace('far', 'fas');
                } else {
                    button.classList.remove('is-active');
                    if (icon) icon.className = icon.className.replace('fas', 'far');
                }
                button.disabled = false;
            }).catch(function (error) {
                var msg = error.message || '治理动作执行失败。';
                if (typeof window.aksrtToast === 'function') { window.aksrtToast(msg, 'error'); }
                else { window.alert(msg); }
                button.disabled = false;
            });
        });
    }

    function bindFavoriteButton(button) {
        button.addEventListener('click', function () {
            var topicId = button.getAttribute('data-topic-id');
            if (!topicId || button.disabled) {
                return;
            }

            button.disabled = true;
            request('/forum/topics/' + topicId + '/favorite', {
                method: 'POST',
                body: JSON.stringify({}),
            }).then(function (payload) {
                var isFav = !!(payload.favorited);
                var icon = button.querySelector('i');
                var label = button.querySelector('.js-aksrt-favorite-label');
                button.setAttribute('data-favorited', isFav ? '1' : '0');
                if (icon) {
                    icon.className = isFav ? 'fas fa-bookmark' : 'far fa-bookmark';
                }
                if (label) {
                    label.textContent = isFav ? '已收藏' : '收藏';
                }
                button.disabled = false;
            }).catch(function (error) {
                var msg = error.message || '操作失败';
                if (typeof window.aksrtToast === 'function') { window.aksrtToast(msg, 'error'); }
                else { window.alert(msg); }
                button.disabled = false;
            });
        });
    }

    function bindScoreButton(button) {
        button.addEventListener('click', function () {
            var container = button.closest('.aksrt-forum-topic__score-actions');
            if (!container || button.disabled) {
                return;
            }

            var topicId = container.getAttribute('data-topic-id');
            var amount = parseInt(button.getAttribute('data-amount') || '0', 10);
            var feedback = container.querySelector('.js-aksrt-action-feedback');

            if (!topicId || amount === 0) {
                return;
            }

            button.disabled = true;
            setFeedback(feedback, '提交中…', 'is-loading');

            request('/forum/topics/' + topicId + '/score', {
                method: 'POST',
                body: JSON.stringify({ amount: amount }),
            }).then(function (payload) {
                var scoreEl = container.querySelector('.js-aksrt-score-value');
                if (scoreEl && payload.score !== undefined) {
                    scoreEl.textContent = String(payload.score);
                }
                setFeedback(feedback, payload.message || '评分成功', 'is-success');
                // Disable both score buttons after success (one-time per user)
                container.querySelectorAll('.js-aksrt-topic-score').forEach(function (btn) {
                    btn.disabled = true;
                });
            }).catch(function (error) {
                setFeedback(feedback, error.message || '评分失败', 'is-error');
                button.disabled = false;
            });
        });
    }

    function bindAdoptButton(button) {
        button.addEventListener('click', function () {
            var topicId = button.getAttribute('data-topic-id');
            var commentId = button.getAttribute('data-comment-id');
            if (!topicId || !commentId || button.disabled) {
                return;
            }

            if (!window.confirm('确认采纳该回复为最佳答案？')) {
                return;
            }

            button.disabled = true;
            request('/forum/topics/' + topicId + '/adopt', {
                method: 'POST',
                body: JSON.stringify({ comment_id: parseInt(commentId, 10) }),
            }).then(function (payload) {
                button.textContent = '✓ 已采纳';
                button.classList.add('is-adopted');
                // Disable all other adopt buttons
                document.querySelectorAll('.js-aksrt-adopt-answer').forEach(function (btn) {
                    btn.disabled = true;
                });
            }).catch(function (error) {
                var msg = error.message || '采纳失败';
                if (typeof window.aksrtToast === 'function') { window.aksrtToast(msg, 'error'); }
                else { window.alert(msg); }
                button.disabled = false;
            });
        });
    }

    function bindReportModal(modal) {
        var form = modal.querySelector('.js-aksrt-report-form');
        var feedback = modal.querySelector('.js-aksrt-action-feedback');
        var targetLabel = modal.querySelector('.js-aksrt-report-target');
        var targetTypeField = form ? form.querySelector('[name="target_type"]') : null;
        var targetIdField = form ? form.querySelector('[name="target_id"]') : null;
        var closeButtons = modal.querySelectorAll('.js-aksrt-report-close');

        function openModal(trigger) {
            if (!form) return;
            var targetType = trigger.getAttribute('data-target-type') || 'post';
            var targetId = trigger.getAttribute('data-target-id') || '';
            var targetTitle = trigger.getAttribute('data-target-title') || '';
            if (targetTypeField) targetTypeField.value = targetType;
            if (targetIdField) targetIdField.value = targetId;
            if (targetLabel) {
                targetLabel.textContent = '举报对象：' + (targetTitle || ('#' + targetId));
            }
            modal.hidden = false;
            document.body.classList.add('is-report-modal-open');
        }

        function closeModal() {
            modal.hidden = true;
            document.body.classList.remove('is-report-modal-open');
            if (form) form.reset();
            setFeedback(feedback, '', '');
        }

        document.querySelectorAll('.js-aksrt-report-trigger').forEach(function (trigger) {
            trigger.addEventListener('click', function () {
                openModal(trigger);
            });
        });

        closeButtons.forEach(function (btn) {
            btn.addEventListener('click', closeModal);
        });

        if (!form) return;

        form.addEventListener('submit', function (event) {
            event.preventDefault();
            var reason = (form.querySelector('[name="reason"]') || {}).value || '';
            if (!reason.trim()) {
                setFeedback(feedback, '请填写举报说明。', 'is-error');
                return;
            }
            setFeedback(feedback, '正在提交举报…', 'is-loading');
            request('/report/submit', {
                method: 'POST',
                body: JSON.stringify({
                    target_type: targetTypeField ? targetTypeField.value : 'post',
                    target_id: parseInt(targetIdField ? targetIdField.value : '0', 10),
                    category: (form.querySelector('[name="category"]') || {}).value || 'other',
                    reason: reason,
                }),
            }).then(function (payload) {
                setFeedback(feedback, payload.message || '举报已提交', 'is-success');
                setTimeout(closeModal, 900);
            }).catch(function (error) {
                setFeedback(feedback, error.message || '举报提交失败。', 'is-error');
            });
        });
    }

    
    function insertForumEditorContent(html) {
        if (window.tinymce) {
            var ed = window.tinymce.get('compose-content') || window.tinymce.get('post_content');
            if (ed && !ed.isHidden()) {
                ed.focus();
                ed.execCommand('mceInsertContent', false, html);
                return;
            }
        }
        var ta = document.getElementById('compose-content') || document.getElementById('post_content');
        if (!ta) return;
        var start = ta.selectionStart || 0;
        var end = ta.selectionEnd || 0;
        var val = ta.value || '';
        ta.value = val.slice(0, start) + html + val.slice(end);
        ta.focus();
    }

    function bindComposeShortcodeTools(root) {
        root = root || document;
        root.addEventListener('click', function (e) {
            var btn = e.target.closest('[data-insert-shortcode]');
            if (!btn) return;
            e.preventDefault();
            var type = btn.getAttribute('data-insert-shortcode');
            if (type === 'hide') {
                insertForumEditorContent('[hidecontent type="login"]隐藏内容[/hidecontent]');
            } else if (type === 'reply') {
                insertForumEditorContent('[hidecontent type="reply"]回复后可见[/hidecontent]');
            } else if (type === 'payshow') {
                insertForumEditorContent('[hidecontent type="payshow"]付费可见内容[/hidecontent]');
            } else if (type === 'vip') {
                insertForumEditorContent('[vip]VIP 可见内容[/vip]');
            }
        });
    }

    function bindComposeVisibilityToggle(form) {
        var visSelect = form.querySelector('#compose-visibility');
        var creditsField = form.querySelector('#compose-credits-cost-field');
        var payField = form.querySelector('#compose-pay-price-field');
        var roleField = form.querySelector('#compose-role-field');

        if (!visSelect) return;

        function syncVisFields() {
            var val = visSelect.value;
            if (creditsField) creditsField.style.display = val === 'credits' ? '' : 'none';
            if (payField) payField.style.display = val === 'pay' ? '' : 'none';
            if (roleField) roleField.style.display = val === 'role' ? '' : 'none';
        }

        visSelect.addEventListener('change', syncVisFields);
        syncVisFields();
    }

    function bindUnlockButton(button) {
        button.addEventListener('click', function () {
            var topicId = parseInt(button.getAttribute('data-topic-id') || '0', 10);
            var cost = button.getAttribute('data-cost') || '0';
            var feedback = button.parentElement ? button.parentElement.querySelector('.js-aksrt-action-feedback') : null;

            if (!topicId || !window.confirm('确认使用 ' + cost + ' 积分解锁此主题？')) {
                return;
            }

            button.disabled = true;
            setFeedback(feedback, '正在解锁…', 'is-loading');

            var data = new FormData();
            data.append('action', 'aksrt_forum_unlock_topic');
            data.append('topic_id', topicId);
            data.append('_nonce', rootData.forumNonce || '');

            fetch((rootData.ajaxUrl || '/wp-admin/admin-ajax.php'), {
                method: 'POST',
                body: data,
                credentials: 'same-origin',
            }).then(function (r) { return r.json(); }).then(function (payload) {
                if (!payload.success) {
                    throw new Error((payload.data && payload.data.message) || '解锁失败');
                }
                setFeedback(feedback, '解锁成功，正在刷新…', 'is-success');
                setTimeout(function () { window.location.reload(); }, 800);
            }).catch(function (error) {
                setFeedback(feedback, error.message || '解锁失败', 'is-error');
                button.disabled = false;
            });
        });
    }

    function formatFollowPayLabel(pay) {
        pay = pay || {};
        if (pay.is_free) {
            return 'VIP 免费关注';
        }
        if (pay.label) {
            return String(pay.label);
        }
        if (pay.modo === 'points') {
            return String(pay.amount || 0) + ' 积分';
        }
        return '¥' + String(pay.amount || '0');
    }

    function purchasePlateFollow(plateId, button, payHint) {
        payHint = payHint || {};
        var modo = String(payHint.modo || 'money');

        // Cash (paid or VIP free): multi-gateway cashier — free VIP still creates 0-order for ledger.
        // No Credits×100 bypass.
        if (modo === 'money') {
            button.disabled = false;
            if (typeof window.aksrtOpenCashier === 'function') {
                window.aksrtOpenCashier(plateId, button, '', '', 'plate_follow');
                return;
            }
            var msgCashier = '收银台未加载，请刷新页面后重试';
            if (typeof window.aksrtToast === 'function') { window.aksrtToast(msgCashier, 'error'); }
            else { window.alert(msgCashier); }
            return;
        }

        // Points / points VIP free: keep AJAX purchase path.
        var confirmMsg = '确认付费关注该版块？';
        if (payHint.is_free) {
            confirmMsg = '确认使用 VIP 免费关注该版块？';
        } else {
            confirmMsg = '确认支付 ' + formatFollowPayLabel(payHint) + ' 关注该版块？';
        }
        if (!window.confirm(confirmMsg)) {
            button.disabled = false;
            return;
        }

        var data = new FormData();
        data.append('action', 'aksrt_forum_purchase_plate_follow');
        data.append('plate_id', plateId);
        data.append('_nonce', rootData.forumNonce || '');

        fetch((rootData.ajaxUrl || '/wp-admin/admin-ajax.php'), {
            method: 'POST',
            body: data,
            credentials: 'same-origin',
        }).then(function (r) { return r.json(); }).then(function (payload) {
            if (!payload.success) {
                var errData = payload.data || {};
                // Server may redirect money path to cashier.
                if (errData.require_cashier && typeof window.aksrtOpenCashier === 'function') {
                    button.disabled = false;
                    window.aksrtOpenCashier(plateId, button, '', '', 'plate_follow');
                    return;
                }
                throw new Error(errData.message || '支付失败');
            }
            var res = payload.data || {};
            button.setAttribute('data-followed', '1');
            button.classList.add('is-followed');
            if (button.querySelector('i') && button.childNodes.length) {
                button.innerHTML = '<i class="fas fa-heart"></i> 已关注';
            } else {
                button.textContent = '已关注';
            }
            if (typeof window.aksrtToast === 'function') {
                window.aksrtToast(res.message || '关注成功', 'success');
            }
            setTimeout(function () { window.location.reload(); }, 600);
        }).catch(function (error) {
            var msg = error.message || '支付失败';
            if (typeof window.aksrtToast === 'function') { window.aksrtToast(msg, 'error'); }
            else { window.alert(msg); }
            button.disabled = false;
        });
    }

    function bindFollowPlateButton(button) {
        button.addEventListener('click', function () {
            var plateId = parseInt(button.getAttribute('data-plate-id') || '0', 10);
            if (!plateId || button.disabled) {
                return;
            }
            button.disabled = true;

            var data = new FormData();
            data.append('action', 'aksrt_forum_follow_plate');
            data.append('plate_id', plateId);
            data.append('_nonce', rootData.forumNonce || '');

            fetch((rootData.ajaxUrl || '/wp-admin/admin-ajax.php'), {
                method: 'POST',
                body: data,
                credentials: 'same-origin',
            }).then(function (r) { return r.json(); }).then(function (payload) {
                // Paid follow required
                if (!payload.success && payload.data && payload.data.require_pay) {
                    purchasePlateFollow(plateId, button, payload.data.pay || {});
                    return;
                }
                if (!payload.success) {
                    throw new Error((payload.data && payload.data.message) || '操作失败');
                }
                var res = payload.data || {};
                var followed = !!res.followed;
                button.setAttribute('data-followed', followed ? '1' : '0');
                button.classList.toggle('is-followed', followed);
                button.innerHTML = followed
                    ? '<i class="fas fa-heart"></i> 已关注'
                    : '<i class="fas fa-heart"></i> 关注';
                button.disabled = false;
            }).catch(function (error) {
                var msg = error.message || '操作失败';
                if (typeof window.aksrtToast === 'function') { window.aksrtToast(msg, 'error'); }
                else { window.alert(msg); }
                button.disabled = false;
            });
        });
    }

    function bindComposeCoverToggle(form) {
        var coverTypeSelect = form.querySelector('#compose-cover-type');
        var imageField = form.querySelector('#compose-cover-image-field');
        var slideField = form.querySelector('#compose-cover-slide-field');
        var videoField = form.querySelector('#compose-cover-video-field');

        if (!coverTypeSelect) return;

        function syncCoverFields() {
            var val = coverTypeSelect.value;
            if (imageField) imageField.style.display = val === 'image' ? '' : 'none';
            if (slideField) slideField.style.display = val === 'slide' ? '' : 'none';
            if (videoField) videoField.style.display = val === 'video' ? '' : 'none';
        }

        coverTypeSelect.addEventListener('change', syncCoverFields);
        syncCoverFields();

        var imageInput = form.querySelector('#compose-cover-image');
        var imagePreview = form.querySelector('#compose-cover-preview');
        var imageBtn = form.querySelector('#compose-cover-upload-btn');

        if (imageBtn && typeof wp !== 'undefined' && wp.media) {
            imageBtn.addEventListener('click', function () {
                var frame = wp.media({ title: '选择封面图片', multiple: false, library: { type: 'image' } });
                frame.on('select', function () {
                    var attachment = frame.state().get('selection').first().toJSON();
                    if (imageInput) imageInput.value = attachment.url;
                    if (imagePreview) imagePreview.innerHTML = '<img src="' + attachment.url + '" alt="">';
                });
                frame.open();
            });
        }

        var slideInput = form.querySelector('#compose-featured-slide');
        var slidePreview = form.querySelector('#compose-slide-preview');
        var slideBtn = form.querySelector('#compose-slide-upload-btn');

        if (slideBtn && typeof wp !== 'undefined' && wp.media) {
            slideBtn.addEventListener('click', function () {
                var frame = wp.media({ title: '选择幻灯片图片', multiple: true, library: { type: 'image' } });
                frame.on('select', function () {
                    var urls = frame.state().get('selection').map(function (a) { return a.toJSON().url; });
                    urls = urls.slice(0, 9);
                    if (slideInput) slideInput.value = JSON.stringify(urls);
                    if (slidePreview) {
                        slidePreview.innerHTML = urls.map(function (u) { return '<img src="' + u + '" alt="">'; }).join('');
                    }
                });
                frame.open();
            });
        }
    }

    function bindEditPlateButton(button) {
        button.addEventListener('click', function () {
            var plateId = button.getAttribute('data-plate-id');
            var name = window.prompt('版块名称：', button.getAttribute('data-name') || '');
            if (name === null) return;
            var description = window.prompt('版块描述：', button.getAttribute('data-description') || '');
            if (description === null) description = '';

            request('/forum/front/plates/' + plateId, {
                method: 'POST',
                body: JSON.stringify({ name: name, description: description }),
            }).then(function () {
                window.location.reload();
            }).catch(function (error) {
                window.alert(error.message || '编辑失败');
            });
        });
    }

    function bindDeletePlateButton(button) {
        button.addEventListener('click', function () {
            var plateId = button.getAttribute('data-plate-id');
            var topicCount = parseInt(button.getAttribute('data-topic-count') || '0', 10);
            var msg = '确认删除此版块？';
            if (topicCount > 0) {
                msg += '\n该版块下有 ' + topicCount + ' 个主题，删除后将移入回收站。';
            }
            if (!window.confirm(msg)) return;

            request('/forum/front/plates/' + plateId, {
                method: 'DELETE',
                body: JSON.stringify({ cascade: 'trash' }),
            }).then(function () {
                window.location.href = (rootData.siteUrl || '') + '/forums/';
            }).catch(function (error) {
                window.alert(error.message || '删除失败');
            });
        });
    }

    // ──────────────────────────────────────────────────────────
    //  §7.4 — Remote search selector
    // ──────────────────────────────────────────────────────────

    function bindRemoteSelects(container) {
        var selects = container.querySelectorAll('.aksrt-remote-select');
        selects.forEach(function (wrapper) {
            var searchAction = wrapper.getAttribute('data-search-action');
            var hiddenInput = wrapper.querySelector('input[type="hidden"]');
            var textInput = wrapper.querySelector('.js-aksrt-remote-input');
            var dropdown = wrapper.querySelector('.aksrt-remote-select__dropdown');
            if (!searchAction || !hiddenInput || !textInput || !dropdown) return;

            var debounceTimer = null;
            var ajaxUrl = (rootData.ajaxUrl || '/wp-admin/admin-ajax.php');

            textInput.addEventListener('input', function () {
                clearTimeout(debounceTimer);
                var q = textInput.value.trim();
                debounceTimer = setTimeout(function () {
                    fetch(ajaxUrl + '?action=' + encodeURIComponent(searchAction) + '&q=' + encodeURIComponent(q), {
                        credentials: 'same-origin',
                    }).then(function (r) { return r.json(); }).then(function (payload) {
                        if (!payload.success || !payload.data) return;
                        dropdown.innerHTML = '';
                        payload.data.forEach(function (item) {
                            var div = document.createElement('div');
                            div.className = 'aksrt-remote-select__option';
                            div.textContent = item.name;
                            div.setAttribute('data-id', String(item.id));
                            div.addEventListener('mousedown', function (e) {
                                e.preventDefault();
                                hiddenInput.value = item.id;
                                textInput.value = item.name;
                                dropdown.hidden = true;
                            });
                            dropdown.appendChild(div);
                        });
                        dropdown.hidden = payload.data.length === 0;
                    });
                }, 250);
            });

            textInput.addEventListener('focus', function () {
                if (dropdown.children.length > 0) dropdown.hidden = false;
                textInput.dispatchEvent(new Event('input'));
            });
            textInput.addEventListener('blur', function () {
                setTimeout(function () { dropdown.hidden = true; }, 200);
            });
        });
    }

    // ──────────────────────────────────────────────────────────
    //  §7.4 — Tag tokenizer
    // ──────────────────────────────────────────────────────────

    function bindTagInputs(container) {
        var wrappers = container.querySelectorAll('.aksrt-tag-input');
        wrappers.forEach(function (wrapper) {
            var searchAction = wrapper.getAttribute('data-search-action');
            var maxTags = parseInt(wrapper.getAttribute('data-max') || '5', 10);
            var hiddenInput = wrapper.querySelector('input[type="hidden"]');
            var tokenContainer = wrapper.querySelector('.aksrt-tag-input__tokens');
            var textInput = wrapper.querySelector('.js-aksrt-tag-search');
            var dropdown = wrapper.querySelector('.aksrt-tag-input__dropdown');
            if (!hiddenInput || !tokenContainer || !textInput) return;

            var tags = [];
            var initialVal = (hiddenInput.value || '').trim();
            if (initialVal) {
                initialVal.split(/[,，]/).forEach(function (t) {
                    t = t.trim();
                    if (t && tags.indexOf(t) === -1) tags.push(t);
                });
            }

            function syncHidden() {
                hiddenInput.value = tags.join(', ');
            }

            function renderTokens() {
                tokenContainer.innerHTML = '';
                tags.forEach(function (tag, idx) {
                    var span = document.createElement('span');
                    span.className = 'aksrt-tag-input__token';
                    span.textContent = tag;
                    var close = document.createElement('button');
                    close.type = 'button';
                    close.className = 'aksrt-tag-input__token-remove';
                    close.innerHTML = '&times;';
                    close.addEventListener('click', function () {
                        tags.splice(idx, 1);
                        syncHidden();
                        renderTokens();
                    });
                    span.appendChild(close);
                    tokenContainer.appendChild(span);
                });
            }

            function addTag(name) {
                name = name.trim();
                if (!name || tags.indexOf(name) !== -1 || tags.length >= maxTags) return;
                tags.push(name);
                syncHidden();
                renderTokens();
                textInput.value = '';
            }

            renderTokens();

            textInput.addEventListener('keydown', function (e) {
                if (e.key === 'Enter' || e.key === ',') {
                    e.preventDefault();
                    addTag(textInput.value);
                    if (dropdown) dropdown.hidden = true;
                }
                if (e.key === 'Backspace' && textInput.value === '' && tags.length > 0) {
                    tags.pop();
                    syncHidden();
                    renderTokens();
                }
            });

            if (searchAction && dropdown) {
                var ajaxUrl = (rootData.ajaxUrl || '/wp-admin/admin-ajax.php');
                var debounce = null;

                textInput.addEventListener('input', function () {
                    clearTimeout(debounce);
                    var q = textInput.value.trim();
                    if (!q) { dropdown.hidden = true; return; }
                    debounce = setTimeout(function () {
                        fetch(ajaxUrl + '?action=' + encodeURIComponent(searchAction) + '&q=' + encodeURIComponent(q), {
                            credentials: 'same-origin',
                        }).then(function (r) { return r.json(); }).then(function (payload) {
                            if (!payload.success || !payload.data) return;
                            dropdown.innerHTML = '';
                            payload.data.forEach(function (item) {
                                var div = document.createElement('div');
                                div.className = 'aksrt-tag-input__suggestion';
                                div.textContent = item.name + (item.count !== undefined ? ' (' + item.count + ')' : '');
                                div.addEventListener('mousedown', function (e) {
                                    e.preventDefault();
                                    addTag(item.name);
                                    dropdown.hidden = true;
                                });
                                dropdown.appendChild(div);
                            });
                            dropdown.hidden = payload.data.length === 0;
                        });
                    }, 250);
                });

                textInput.addEventListener('blur', function () {
                    setTimeout(function () { dropdown.hidden = true; }, 200);
                });
            }
        });
    }

    // ──────────────────────────────────────────────────────────
    //  §7.4 — Title character counter
    // ──────────────────────────────────────────────────────────

    function bindTitleCounter(form) {
        var titleInput = form.querySelector('#compose-title');
        var counterCurrent = form.querySelector('.js-aksrt-counter-current');
        if (!titleInput || !counterCurrent) return;

        function update() {
            counterCurrent.textContent = String(titleInput.value.length);
            var max = parseInt(titleInput.getAttribute('data-aksrt-maxlength') || '30', 10);
            var parent = counterCurrent.closest('.aksrt-forum-compose__char-counter');
            if (parent) {
                parent.classList.toggle('is-over', titleInput.value.length > max);
                parent.classList.toggle('is-near', titleInput.value.length > max * 0.8 && titleInput.value.length <= max);
            }
        }

        titleInput.addEventListener('input', update);
        update();
    }

    // ──────────────────────────────────────────────────────────
    //  §7.4 — Draft list toggle & delete
    // ──────────────────────────────────────────────────────────

    function bindDraftUI() {
        var toggle = document.querySelector('.js-aksrt-draft-toggle');
        var list = document.querySelector('#compose-draft-list');
        if (toggle && list) {
            toggle.addEventListener('click', function () {
                list.hidden = !list.hidden;
                var icon = toggle.querySelector('i.fa-chevron-down, i.fa-chevron-up');
                if (icon) {
                    icon.classList.toggle('fa-chevron-down');
                    icon.classList.toggle('fa-chevron-up');
                }
            });
        }

        document.querySelectorAll('.js-aksrt-delete-draft').forEach(function (btn) {
            btn.addEventListener('click', function () {
                var draftId = btn.getAttribute('data-draft-id');
                if (!draftId || !window.confirm('确认删除此草稿？')) return;

                var ajaxUrl = (rootData.ajaxUrl || '/wp-admin/admin-ajax.php');
                var nonce = '';
                var form = document.querySelector('.js-aksrt-forum-compose-form');
                if (form) nonce = form.getAttribute('data-nonce') || '';

                var data = new FormData();
                data.append('action', 'aksrt_forum_delete_draft');
                data.append('_nonce', nonce);
                data.append('draft_id', draftId);

                fetch(ajaxUrl, { method: 'POST', body: data, credentials: 'same-origin' })
                    .then(function (r) {
                        return r.text().then(function (text) {
                            var payload = null;
                            try {
                                payload = text ? JSON.parse(text) : null;
                            } catch (e) {
                                payload = null;
                            }
                            return { ok: r.ok, status: r.status, payload: payload, raw: text };
                        });
                    })
                    .then(function (res) {
                        if (res.payload && res.payload.success) {
                            var item = btn.closest('.aksrt-forum-compose__draft-item');
                            if (item) item.remove();
                            return;
                        }
                        var msg = (res.payload && res.payload.data && res.payload.data.message)
                            || (res.payload && res.payload.message)
                            || (res.status === 500
                                ? '服务器错误：请确认主题已更新到最新 main（Forum.php 草稿 autoload 修复）'
                                : '删除失败');
                        if (window.console && console.warn) {
                            console.warn('[aksrt] delete draft failed', res.status, msg);
                        }
                        window.alert(msg);
                    })
                    .catch(function (err) {
                        if (window.console && console.warn) {
                            console.warn('[aksrt] delete draft network error', err);
                        }
                        window.alert('删除失败，请稍后重试');
                    });
            });
        });
    }

    // ──────────────────────────────────────────────────────────
    //  §7.4 — Edit form AJAX submit
    // ──────────────────────────────────────────────────────────

    function bindEditForm(form) {
        var submitButton = form.querySelector('#compose-submit');
        var feedback = form.querySelector('.js-aksrt-action-feedback');
        var ajaxUrl = form.getAttribute('data-ajax');
        var nonce = form.getAttribute('data-nonce');
        var topicId = form.getAttribute('data-topic-id');

        if (!submitButton || !ajaxUrl || !nonce || !topicId) return;

        form.addEventListener('submit', function (event) {
            event.preventDefault();

            var title = form.querySelector('#compose-title');
            var content = getEditorContent();

            if (!title || !title.value.trim() || !content.trim()) {
                setFeedback(feedback, '标题和内容不能为空。', 'is-error');
                return;
            }

            submitButton.disabled = true;
            setFeedback(feedback, '正在保存…', 'is-loading');

            var data = new FormData(form);
            data.set('content', content);
            data.append('action', 'aksrt_forum_edit_topic');
            data.append('_nonce', nonce);
            data.append('topic_id', topicId);

            fetch(ajaxUrl, {
                method: 'POST',
                body: data,
                credentials: 'same-origin',
            }).then(function (r) { return r.json(); }).then(function (payload) {
                if (!payload.success) {
                    throw new Error((payload.data && payload.data.message) || '保存失败');
                }
                if (payload.data && payload.data.redirect) {
                    window.location.href = payload.data.redirect;
                    return;
                }
                setFeedback(feedback, payload.data.message || '已保存', 'is-success');
                submitButton.disabled = false;
            }).catch(function (error) {
                setFeedback(feedback, error.message || '保存失败', 'is-error');
                submitButton.disabled = false;
            });
        });
    }

    // ── §7.6 Forum comment engine ─────────────────────────────────────────

    function bindForumCommentEngine() {
        var section = document.getElementById('aksrt-forum-replies');
        if (!section) return;

        var topicId = section.dataset.topicId;
        var nonce   = section.dataset.nonce;
        var list    = section.querySelector('.js-aksrt-forum-replies-list');
        var loadMore = section.querySelector('.js-aksrt-forum-load-more');
        var currentSort = 'newest';
        var currentAuthorOnly = false;

        // Sort tabs
        section.querySelectorAll('.aksrt-forum-replies__tab').forEach(function (tab) {
            tab.addEventListener('click', function () {
                section.querySelectorAll('.aksrt-forum-replies__tab').forEach(function (t) { t.classList.remove('is-active'); });
                tab.classList.add('is-active');
                currentSort = tab.dataset.sort || 'newest';
                loadComments(1);
            });
        });

        // Author-only toggle
        var authorToggle = section.querySelector('.aksrt-forum-replies__author-toggle');
        if (authorToggle) {
            authorToggle.addEventListener('change', function () {
                currentAuthorOnly = authorToggle.checked;
                loadComments(1);
            });
        }

        // Load more button
        if (loadMore) {
            loadMore.addEventListener('click', function () {
                var page = parseInt(loadMore.dataset.page, 10) || 1;
                loadComments(page + 1, true);
            });
        }

        function loadComments(page, append) {
            var fd = new FormData();
            fd.append('action', 'aksrt_forum_comments');
            fd.append('nonce', nonce);
            fd.append('topic_id', topicId);
            fd.append('sort', currentSort);
            fd.append('author_only', currentAuthorOnly ? '1' : '');
            fd.append('page', page);

            list.style.opacity = append ? '1' : '0.5';

            fetch(window.aksrtForumGovernance ? window.aksrtForumGovernance.ajaxUrl : (window.ajaxurl || '/wp-admin/admin-ajax.php'), {
                method: 'POST',
                body: fd,
                credentials: 'same-origin'
            }).then(function (r) { return r.json(); })
            .then(function (res) {
                list.style.opacity = '1';
                if (!res.success) return;
                if (append) {
                    list.insertAdjacentHTML('beforeend', res.data.html);
                } else {
                    list.innerHTML = res.data.html;
                }
                if (loadMore) {
                    loadMore.dataset.page = String(page);
                    loadMore.dataset.max  = String(res.data.max_pages);
                    loadMore.closest('.aksrt-forum-replies__load-more').style.display =
                        res.data.has_more ? '' : 'none';
                }
                bindDynamicCommentActions(list);
            }).catch(function () {
                list.style.opacity = '1';
            });
        }

        bindDynamicCommentActions(list);
    }

    function bindDynamicCommentActions(container) {
        if (!container) return;
        container.querySelectorAll('.js-aksrt-comment-like').forEach(bindCommentLike);
        container.querySelectorAll('.js-aksrt-adopt-answer').forEach(bindAdoptButton);
        container.querySelectorAll('.js-aksrt-comment-reply').forEach(bindCommentReply);
        container.querySelectorAll('.js-aksrt-comment-top').forEach(bindCommentTop);
    }

    function bindCommentLike(btn) {
        if (btn._likebound) return;
        btn._likebound = true;
        btn.addEventListener('click', function () {
            var commentId = btn.dataset.commentId;
            var active = btn.dataset.active === '1';
            var newActive = !active;

            btn.disabled = true;
            fetch(window.aksrtForumGovernance ? window.aksrtForumGovernance.restUrl + 'aksrt/v1/comment/like' : '/wp-json/aksrt/v1/comment/like', {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json',
                    'X-WP-Nonce': window.aksrtForumGovernance ? window.aksrtForumGovernance.restNonce : ''
                },
                body: JSON.stringify({ comment_id: parseInt(commentId, 10), active: newActive }),
                credentials: 'same-origin'
            }).then(function (r) { return r.json(); })
            .then(function (res) {
                btn.disabled = false;
                if (!res.success && !res.data) return;
                var data = res.data || res;
                btn.dataset.active = data.active ? '1' : '0';
                btn.classList.toggle('is-active', !!data.active);
                var icon = btn.querySelector('i');
                if (icon) {
                    icon.className = data.active ? 'fas fa-thumbs-up' : 'far fa-thumbs-up';
                }
                var count = btn.querySelector('.aksrt-forum-reply__like-count');
                if (count) {
                    count.textContent = data.count > 0 ? String(data.count) : '';
                }
            }).catch(function () { btn.disabled = false; });
        });
    }

    function bindCommentReply(btn) {
        if (btn._replybound) return;
        btn._replybound = true;
        btn.addEventListener('click', function () {
            var commentId = btn.dataset.commentId;
            var author = btn.dataset.author || '';
            var form = document.querySelector('.aksrt-forum-topic__reply-form');
            if (!form) return;
            var textarea = form.querySelector('textarea[name="comment"]');
            if (!textarea) return;
            // Set reply parent
            var parentInput = form.querySelector('input[name="comment_parent"]');
            if (!parentInput) {
                parentInput = document.createElement('input');
                parentInput.type = 'hidden';
                parentInput.name = 'comment_parent';
                form.querySelector('form').appendChild(parentInput);
            }
            parentInput.value = commentId;
            textarea.placeholder = '@' + author + ' ';
            textarea.focus();
            form.scrollIntoView({ behavior: 'smooth', block: 'center' });
        });
    }

    function bindCommentTop(btn) {
        if (btn._topbound) return;
        btn._topbound = true;
        btn.addEventListener('click', function () {
            var commentId = btn.dataset.commentId;
            var currentLevel = parseInt(btn.dataset.level, 10) || 0;
            var newLevel = currentLevel > 0 ? 0 : 1;

            btn.disabled = true;
            var section = document.getElementById('aksrt-forum-replies');
            var nonce = section ? section.dataset.nonce : '';

            var fd = new FormData();
            fd.append('action', 'aksrt_forum_comment_top');
            fd.append('nonce', nonce);
            fd.append('comment_id', commentId);
            fd.append('level', newLevel);

            fetch(window.aksrtForumGovernance ? window.aksrtForumGovernance.ajaxUrl : (window.ajaxurl || '/wp-admin/admin-ajax.php'), {
                method: 'POST',
                body: fd,
                credentials: 'same-origin'
            }).then(function (r) { return r.json(); })
            .then(function (res) {
                btn.disabled = false;
                if (res.success) {
                    btn.dataset.level = String(newLevel);
                    var icon = btn.querySelector('i');
                    btn.childNodes.forEach(function (n) {
                        if (n.nodeType === 3) n.textContent = newLevel > 0 ? ' 取消置顶' : ' 置顶';
                    });
                    // Reload comments to reflect pin ordering
                    var activeTab = section && section.querySelector('.aksrt-forum-replies__tab.is-active');
                    if (activeTab) activeTab.click();
                }
            }).catch(function () { btn.disabled = false; });
        });
    }

    // ── §7.10 Forum home tab engine ──────────────────────────────────────

    function bindForumHomeTabs() {
        var nav = document.getElementById('aksrt-forum-home-tabs');
        if (!nav) return;

        var content = document.getElementById('aksrt-forum-home-content');
        if (!content) return;

        var nonce   = nav.dataset.nonce || '';
        var ajaxUrl = nav.dataset.ajaxUrl || (window.aksrtForumGovernance ? window.aksrtForumGovernance.ajaxUrl : '/wp-admin/admin-ajax.php');

        nav.querySelectorAll('.aksrt-forum-home-tabs__btn').forEach(function (btn) {
            btn.addEventListener('click', function () {
                var tabType = btn.dataset.tabType;
                nav.querySelectorAll('.aksrt-forum-home-tabs__btn').forEach(function (b) { b.classList.remove('is-active'); });
                btn.classList.add('is-active');
                loadHomeTab(tabType, 1);
            });
        });

        // Load-more on home content
        content.addEventListener('click', function (e) {
            var moreBtn = e.target.closest('.js-aksrt-home-load-more');
            if (!moreBtn) return;
            var page = parseInt(moreBtn.dataset.page, 10) || 1;
            var tabType = moreBtn.dataset.tab || 'synthesis';
            loadHomeTab(tabType, page + 1, true, moreBtn);
        });

        function loadHomeTab(tabType, page, append, moreBtn) {
            var fd = new FormData();
            fd.append('action', 'aksrt_forum_home_tab');
            fd.append('nonce', nonce);
            fd.append('tab_type', tabType);
            fd.append('page', page);

            if (!append) {
                content.style.opacity = '0.5';
            }
            if (moreBtn) moreBtn.disabled = true;

            fetch(ajaxUrl, { method: 'POST', body: fd, credentials: 'same-origin' })
            .then(function (r) { return r.json(); })
            .then(function (res) {
                content.style.opacity = '1';
                if (!res.success) return;

                if (res.data.type === 'plate') {
                    // Plate tab — reload the whole page to get server-rendered board grid
                    window.location.href = window.location.pathname + '?forum_tab=plate';
                    return;
                }

                if (append) {
                    var list = content.querySelector('.js-aksrt-home-topic-list');
                    if (list) {
                        list.insertAdjacentHTML('beforeend', res.data.html);
                    }
                    if (moreBtn) {
                        moreBtn.disabled = false;
                        moreBtn.dataset.page = String(page);
                        if (!res.data.has_more) {
                            moreBtn.closest('.aksrt-forum-home__load-more').style.display = 'none';
                        }
                    }
                } else {
                    var html = '<div class="aksrt-forum-topics__list js-aksrt-home-topic-list">' + res.data.html + '</div>';
                    if (res.data.has_more) {
                        html += '<div class="aksrt-forum-home__load-more">'
                            + '<button type="button" class="aksrt-forum-replies__more-btn js-aksrt-home-load-more" data-page="1" data-max="' + res.data.max_pages + '" data-tab="' + tabType + '">'
                            + '<i class="fas fa-chevron-down"></i> 加载更多</button></div>';
                    }
                    content.innerHTML = html;
                }
            }).catch(function () {
                content.style.opacity = '1';
                if (moreBtn) moreBtn.disabled = false;
            });
        }
    }


    function bindBoardSortTabs() {
        var root = document.querySelector('.aksrt-forum-board[data-plate-id], .aksrt-forum-board[data-board-id]');
        if (!root) return;
        var list = root.querySelector('.js-aksrt-board-topic-list');
        var tabs = root.querySelectorAll('.js-aksrt-board-sort-tab');
        if (!list || !tabs.length) return;

        var plateId = root.getAttribute('data-plate-id') || '';
        var boardId = root.getAttribute('data-board-id') || '';
        var nonce = root.getAttribute('data-nonce') || (window.aksrtForumGovernance && aksrtForumGovernance.publicNonce) || (window.aksrtData && aksrtData.nonce) || '';
        var ajaxUrl = (window.aksrtForumGovernance && aksrtForumGovernance.ajaxUrl) || (window.aksrtData && aksrtData.ajaxUrl) || '';

        function loadSort(sort, pushUrl) {
            if (!ajaxUrl) return;
            list.style.opacity = '0.55';
            var fd = new FormData();
            fd.append('action', 'aksrt_forum_board_topics');
            fd.append('nonce', nonce);
            fd.append('page', '1');
            fd.append('orderby', sort);
            if (plateId) fd.append('plate_id', plateId);
            if (boardId) fd.append('board_id', boardId);

            fetch(ajaxUrl, { method: 'POST', body: fd, credentials: 'same-origin' })
                .then(function (r) { return r.json(); })
                .then(function (res) {
                    list.style.opacity = '1';
                    if (!res || !res.success) return;
                    list.innerHTML = res.data.html || '';
                    root.setAttribute('data-active-sort', sort);
                    tabs.forEach(function (t) {
                        t.classList.toggle('is-active', (t.getAttribute('data-sort') || '') === sort);
                    });
                    if (pushUrl && window.history && history.replaceState) {
                        try {
                            var u = new URL(window.location.href);
                            u.searchParams.set('forum_sort', sort);
                            history.replaceState({}, '', u.toString());
                        } catch (e) {}
                    }
                })
                .catch(function () { list.style.opacity = '1'; });
        }

        tabs.forEach(function (tab) {
            tab.addEventListener('click', function (e) {
                e.preventDefault();
                var sort = tab.getAttribute('data-sort') || 'date';
                if (sort === (root.getAttribute('data-active-sort') || '')) return;
                loadSort(sort, true);
            });
        });
    }

    function boot() {
        var composeForm = document.querySelector('.js-aksrt-forum-compose-form');
        if (composeForm) {
            bindComposeToolbar(composeForm);
            bindComposeVoteToggle(composeForm);
            bindComposeCoverToggle(composeForm);
            bindComposeVisibilityToggle(composeForm);
            bindComposeDraft(composeForm);
            bindComposeSubmit(composeForm);
            bindRemoteSelects(composeForm);
            bindTagInputs(composeForm);
            bindTitleCounter(composeForm);
            bindDraftUI();
        }

        var editForm = document.querySelector('.js-aksrt-forum-edit-form');
        if (editForm) {
            bindComposeVoteToggle(editForm);
            bindComposeCoverToggle(editForm);
            bindComposeVisibilityToggle(editForm);
            bindRemoteSelects(editForm);
            bindTagInputs(editForm);
            bindTitleCounter(editForm);
            bindEditForm(editForm);
        }

        document.querySelectorAll('.js-aksrt-moderator-apply-form').forEach(bindModeratorApplyForm);
        document.querySelectorAll('.js-aksrt-topic-vote-form').forEach(bindVoteForm);
        document.querySelectorAll('.js-aksrt-topic-moderation-form').forEach(bindModerationForm);
        document.querySelectorAll('.js-aksrt-topic-action').forEach(bindQuickTopicAction);
        document.querySelectorAll('.js-aksrt-topic-favorite').forEach(bindFavoriteButton);
        document.querySelectorAll('.js-aksrt-topic-score').forEach(bindScoreButton);
        document.querySelectorAll('.js-aksrt-adopt-answer').forEach(bindAdoptButton);
        document.querySelectorAll('.js-aksrt-unlock-topic').forEach(bindUnlockButton);
        document.querySelectorAll('.js-aksrt-follow-plate').forEach(bindFollowPlateButton);
        bindForumCommentEngine();
        bindForumHomeTabs();
        bindBoardSortTabs();
        document.querySelectorAll('.js-aksrt-edit-plate').forEach(bindEditPlateButton);
        document.querySelectorAll('.js-aksrt-delete-plate').forEach(bindDeletePlateButton);
        var reportModal = document.querySelector('#aksrt-report-modal');
        if (reportModal) {
            bindReportModal(reportModal);
        }
    }

    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', boot);
    } else {
        boot();
    }
})();