/* chart_tv_lifecycle.js — dispose Lightweight Charts / DOM / listeners */

/** 释放 Lightweight Charts 实例、DOM 与全局事件，避免自动刷新内存泄漏 */
function disposeTradingViewCharts() {
    try {
        if (window._tvInitCleanups && Array.isArray(window._tvInitCleanups)) {
            window._tvInitCleanups.forEach(function (fn) { try { fn(); } catch (e) {} });
        }
        window._tvInitCleanups = [];
        if (window._bindSyncCleanups && Array.isArray(window._bindSyncCleanups)) {
            window._bindSyncCleanups.forEach(function (fn) { try { fn(); } catch (e) {} });
        }
        window._bindSyncCleanups = [];
        if (window._tooltipCleanups && Array.isArray(window._tooltipCleanups)) {
            window._tooltipCleanups.forEach(function (fn) { try { fn(); } catch (e) {} });
        }
        window._tooltipCleanups = [];

        document.querySelectorAll(
            '.volume-crosshair-line, .atr-crosshair-line, .macd-crosshair-line, .chanmacd-crosshair-line'
        ).forEach(function (el) { try { el.remove(); } catch (e) {} });

        if (typeof clearEMA52Series === 'function') {
            try { clearEMA52Series(); } catch (e) {}
        }

        if (tvWidget) {
            ['mainChart', 'volumeChart', 'macdChart', 'chanMacdChart', 'atrChart'].forEach(function (key) {
                try {
                    if (tvWidget[key] && typeof tvWidget[key].remove === 'function') {
                        tvWidget[key].remove();
                    }
                } catch (e) {}
                tvWidget[key] = null;
            });
            if (tvWidget.state) {
                tvWidget.state.isInitialized = false;
            }
        }

        var chartRoot = document.getElementById('tradingview_chart');
        if (chartRoot) {
            // 重建前救出 Cycle Summary，避免 innerHTML 清空时被销毁
            var summaryEl = document.getElementById('wyckoffCycleSummary');
            var chartHost = chartRoot.parentElement;
            if (summaryEl && chartRoot.contains(summaryEl) && chartHost) {
                chartHost.appendChild(summaryEl);
            }
            chartRoot.innerHTML = '';
        }
    } catch (e) {
        console.warn('disposeTradingViewCharts 失败（可忽略）:', e);
    }
}