/* ============================================================
 * API 接口文档交互脚本
 * 从 ApiDocGenerator.appendJs() 提取，版块化便于独立维护
 *
 * AI 定位指引：
 * - 搜索过滤 → 搜索 "filterDocs"
 * - 展开/折叠 → 搜索 "expandAll" / "collapseAll"
 * - 复制功能 → 搜索 "copyToClip" / "copyImage" / "copyRtfFromEl"
 * - DTO/字段展开 → 搜索 "toggleDto" / "toggleChildren"
 * ============================================================ */

/* ===== 导航分组折叠 ===== */
document.querySelectorAll('.nav-group-title').forEach(function(el) {
    el.classList.add('open');
});
function toggleGroup(el) {
    el.classList.toggle('open');
    document.querySelectorAll('.nav-group-title.open + .nav-group-items').forEach(function(i) {
        i.style.maxHeight = i.scrollHeight + 'px';
    });
}
document.querySelectorAll('.nav-group-title.open + .nav-group-items').forEach(function(i) {
    i.style.maxHeight = i.scrollHeight + 'px';
});

/* ===== 方法卡片折叠 ===== */
function toggleMethod(el) {
    el.classList.toggle('collapsed');
}
function toggleDto(el) {
    el.classList.toggle('collapsed');
}

/* ===== 字段子行折叠 ===== */
function toggleChildren(el) {
    el.classList.toggle('open');
    var row = el.closest('tr');
    if (!row) return;
    var d = parseInt(row.dataset.depth) || 0;
    var hide = el.classList.contains('open');
    var next = row.nextElementSibling;
    while (next && next.classList.contains('field-row')) {
        var nd = parseInt(next.dataset.depth) || 0;
        if (nd <= d) break;
        next.style.display = hide ? '' : 'none';
        next = next.nextElementSibling;
    }
}

/* ===== 展开/折叠全部 ===== */
function expandAll() {
    document.querySelectorAll('.method-header').forEach(function(h) { h.classList.remove('collapsed'); });
    document.querySelectorAll('.dto-block-title').forEach(function(t) { t.classList.remove('collapsed'); });
}
function collapseAll() {
    document.querySelectorAll('.method-header').forEach(function(h) { h.classList.add('collapsed'); });
    document.querySelectorAll('.dto-block-title').forEach(function(t) { t.classList.add('collapsed'); });
}

/* ===== 导航高亮（IntersectionObserver） ===== */
var observer = new IntersectionObserver(function(entries) {
    entries.forEach(function(e) {
        if (e.isIntersecting) {
            document.querySelectorAll('.nav-item.active').forEach(function(a) { a.classList.remove('active'); });
            var n = document.querySelector('.nav-item[href="#' + e.target.id + '"]');
            if (n) n.classList.add('active');
        }
    });
});
document.querySelectorAll('.api-card[id]').forEach(function(c) { observer.observe(c); });

/* ===== 侧栏导航点击展开对应方法 ===== */
document.querySelectorAll('.nav-method').forEach(function(link) {
    link.addEventListener('click', function(e) {
        var targetId = this.getAttribute('href');
        if (!targetId || !targetId.startsWith('#')) return;
        var el = document.getElementById(targetId.substring(1));
        if (!el) return;
        var methodCard = el.closest('.method-card');
        if (!methodCard) return;
        var header = methodCard.querySelector('.method-header');
        if (header) header.classList.remove('collapsed');
        var body = methodCard.querySelector('.method-body');
        if (body) body.style.display = '';
        var apiCard = methodCard.closest('.api-card');
        if (apiCard) { apiCard.classList.remove('collapsed'); var apiBody = apiCard.querySelector('.api-body'); if (apiBody) apiBody.style.display = ''; }
    });
});

/* ===== 复制到剪贴板（纯文本） ===== */
function copyToClip(text, btn) {
    if (navigator.clipboard) {
        navigator.clipboard.writeText(text).then(function() {
            markCopied(btn, '✔ 已复制');
        }).catch(function() {
            fallbackCopy(text, btn);
        });
    } else {
        fallbackCopy(text, btn);
    }
}
function fallbackCopy(text, btn) {
    var ta = document.createElement('textarea');
    ta.value = text;
    ta.style.position = 'fixed';
    ta.style.left = '-999px';
    document.body.appendChild(ta);
    ta.select();
    try { document.execCommand('copy'); markCopied(btn, '✔ 已复制'); } catch (e) { markCopied(btn, '⚠ 失败'); }
    document.body.removeChild(ta);
}
function markCopied(btn, msg) {
    var orig = btn.textContent;
    btn.textContent = msg;
    btn.classList.add('copied');
    setTimeout(function() { btn.textContent = orig; btn.classList.remove('copied'); }, 1500);
}

/* ===== 复制代码签名 ===== */
function copyCode(btn) {
    var pre = btn.closest('.method-signature');
    if (!pre) { var card = btn.closest('.method-card'); if (card) pre = card.querySelector('.method-signature'); }
    var codeEl = pre ? pre.querySelector('code') : null;
    var text = codeEl ? codeEl.textContent : (pre ? pre.textContent.replace('复制', '') : '');
    copyToClip(text.trim(), btn);
}

/* ===== 复制为图片（需要 html2canvas） ===== */
function copyImage(el, btn) {
    if (!el || typeof html2canvas === 'undefined') { markCopied(btn, '⚠ 不可用'); return; }
    var clone = el.cloneNode(true);
    clone.querySelectorAll('.method-header').forEach(function(h) { h.classList.remove('collapsed'); });
    clone.querySelectorAll('.method-body').forEach(function(b) { b.style.display = ''; });
    clone.querySelectorAll('.dto-block-title').forEach(function(t) { t.classList.remove('collapsed'); });
    clone.style.position = 'fixed';
    clone.style.left = '-9999px';
    clone.style.top = '0';
    clone.style.zIndex = '-1';
    document.body.appendChild(clone);
    html2canvas(clone, { scale: 2, useCORS: true, allowTaint: true, backgroundColor: '#ffffff', windowWidth: clone.scrollWidth, windowHeight: clone.scrollHeight }).then(function(canvas) {
        canvas.toBlob(function(blob) {
            if (blob && navigator.clipboard && navigator.clipboard.write) {
                var item = new ClipboardItem({ 'image/png': blob });
                navigator.clipboard.write([item]).then(function() {
                    markCopied(btn, '✔ 图片已复制');
                }).catch(function() {
                    markCopied(btn, '⚠ 请粘贴');
                });
            } else { markCopied(btn, '⚠ 不支持'); }
        }, 'image/png');
    }).catch(function() {
        markCopied(btn, '⚠ html2canvas 失败');
    }).finally(function() {
        if (clone.parentNode) document.body.removeChild(clone);
    });
}

/* ===== 复制为 Word 富文本 (RTF) ===== */
function copyRtfFromEl(el, btn) {
    if (!el) { markCopied(btn, '⚠ 无内容'); return; }
    var wrap = document.createElement('div');
    wrap.innerHTML = el.innerHTML;
    // 清除按钮
    wrap.querySelectorAll('button').forEach(function(b) { b.remove(); });
    wrap.querySelectorAll('.copy-btn,.api-copy-btn,.method-copy-btn').forEach(function(b) { b.remove(); });
    wrap.querySelectorAll('.field-expand-toggle').forEach(function(b) { b.remove(); });
    // 展开所有折叠区域
    wrap.querySelectorAll('.method-header').forEach(function(h) { h.classList.remove('collapsed'); });
    wrap.querySelectorAll('.method-body').forEach(function(b) { b.style.display = ''; });
    wrap.querySelectorAll('.dto-block-title').forEach(function(t) { t.classList.remove('collapsed'); });
    // 清除 script/style
    wrap.querySelectorAll('script,style').forEach(function(s) { s.remove(); });
    var html = '<html><head><meta charset="utf-8"><style>' + getDocStyles() + '</style></head><body>' + wrap.innerHTML + '</body></html>';
    if (navigator.clipboard && navigator.clipboard.write) {
        var blob = new Blob([html], { type: 'text/html' });
        navigator.clipboard.write([new ClipboardItem({ 'text/html': blob, 'text/plain': new Blob([wrap.textContent || ''], { type: 'text/plain' }) })])
            .then(function() { markCopied(btn, '✔ 富文本已复制'); })
            .catch(function() { legacyRich(html, btn); markCopied(btn, '⚠ 已复制富文本'); });
    } else {
        legacyRich(html, btn);
        markCopied(btn, '⚠ 已复制富文本');
    }
}

/* ===== 获取文档样式 ===== */
function getDocStyles() {
    var css = '';
    document.querySelectorAll('style').forEach(function(s) { css += s.textContent; });
    return css;
}

/* ===== 旧版富文本复制兼容 ===== */
function legacyRich(html, btn) {
    var listener = function(e) {
        e.clipboardData.setData('text/html', html);
        e.clipboardData.setData('text/plain', '');
        e.preventDefault();
        document.removeEventListener('copy', listener);
    };
    document.addEventListener('copy', listener);
    document.execCommand('copy');
    document.removeEventListener('copy', listener);
}

/* ===== 搜索过滤 ===== */
function filterDocs() {
    var kw = (document.getElementById('searchInput') || {}).value;
    if (!kw || !kw.trim()) { resetSearch(); return; }
    kw = kw.trim().toLowerCase();
    var visible = 0;
    // 导航过滤
    document.querySelectorAll('.nav-group').forEach(function(g) {
        var hasVisible = false;
        g.querySelectorAll('.nav-item').forEach(function(item) {
            var txt = (item.textContent || '').toLowerCase();
            if (txt.indexOf(kw) >= 0) { item.classList.remove('search-hidden'); hasVisible = true; visible++; }
            else { item.classList.add('search-hidden'); }
        });
        if (hasVisible) {
            g.classList.remove('search-hidden');
            var t = g.querySelector('.nav-group-title');
            if (t) t.classList.add('open');
            var items = g.querySelector('.nav-group-items');
            if (items) items.style.maxHeight = items.scrollHeight + 'px';
        } else { g.classList.add('search-hidden'); }
    });
    // 内容过滤
    document.querySelectorAll('.api-card').forEach(function(card) {
        var txt = (card.textContent || '').toLowerCase();
        var match = txt.indexOf(kw) >= 0;
        if (!match) {
            card.querySelectorAll('.method-card').forEach(function(mc) {
                var mt = (mc.textContent || '').toLowerCase();
                if (mt.indexOf(kw) >= 0) { match = true; mc.classList.remove('search-hidden'); mc.querySelector('.method-header').classList.remove('collapsed'); mc.querySelector('.method-body').style.display = ''; }
                else { mc.classList.add('search-hidden'); }
            });
        }
        if (match) { card.classList.remove('search-hidden'); var body = card.querySelector('.api-body'); if (body) { body.style.display = ''; card.classList.remove('collapsed'); } }
        else { card.classList.add('search-hidden'); }
    });
    var searchCount = document.getElementById('searchCount');
    if (searchCount) searchCount.textContent = visible > 0 ? '匹配 ' + visible + ' 项' : '无匹配';
}

function resetSearch() {
    document.querySelectorAll('.search-hidden').forEach(function(el) { el.classList.remove('search-hidden'); });
    document.querySelectorAll('.search-highlight').forEach(function(el) { var p = el.parentNode; if (p) p.replaceChild(document.createTextNode(el.textContent), el); });
    var searchCount = document.getElementById('searchCount');
    if (searchCount) searchCount.textContent = '';
}

/* ===== ESC 清空搜索 ===== */
(function() {
    var si = document.getElementById('searchInput');
    if (si) { si.addEventListener('keydown', function(e) { if (e.key === 'Escape') { this.value = ''; resetSearch(); this.blur(); } }); }
})();

/* ===== 手动选择区域复制富文本兼容 ===== */
document.querySelectorAll('.api-card .api-body, .method-body').forEach(function(el) {
    el.addEventListener('copy', function(e) {
        var sel = window.getSelection();
        if (!sel.rangeCount) return;
        var range = sel.getRangeAt(0);
        var wrapper = document.createElement('div');
        wrapper.appendChild(range.cloneContents());
        wrapper.querySelectorAll('button,.copy-btn,.api-copy-btn,.method-copy-btn').forEach(function(b) { b.remove(); });
        var html = wrapper.innerHTML;
        var css = getDocStyles();
        e.clipboardData.setData('text/html', '<html><head><meta charset="utf-8"><style>' + css + '</style></head><body>' + html + '</body></html>');
        e.preventDefault();
    });
});