/**
 * Dashboard auto-refresh script
 * Polls API every 10 seconds and updates stat cards + chart
 * Auto-loaded by Sage's header.tmpl from wwwroot/scripts/
 */
(function() {
    'use strict';

    // Derive base URL from current page (e.g. /dashboard_for_sage/index.ui -> /dashboard_for_sage)
    function getBaseUrl() {
        var path = window.location.pathname;
        // Remove .ui or .dspy extension
        var idx = path.lastIndexOf('/');
        return path.substring(0, idx);
    }

    function buildUrl(dspyFile) {
        var base = getBaseUrl();
        // Add _webbricks_=1 for non-initial requests
        return base + '/' + dspyFile + '?_webbricks_=1';
    }

    function updateCard(id, value) {
        try {
            var widget = bricks.app.find_widget_by_id(id);
            if (widget && widget.el) {
                widget.el.textContent = value;
            }
        } catch(e) {
            // Widget may not be ready yet
        }
    }

    function formatNumber(n) {
        if (typeof n === 'number') {
            return n.toLocaleString();
        }
        return n;
    }

    function formatAmount(n) {
        if (typeof n === 'number') {
            return '¥' + n.toFixed(2);
        }
        return '¥0.00';
    }

    async function refreshStats() {
        try {
            var url = buildUrl('api/get_today_usage.dspy');
            var resp = await fetch(url, { credentials: 'include' });
            if (!resp.ok) return;
            var data = await resp.json();
            updateCard('today_cnt_value', formatNumber(data.cnt));
            updateCard('today_amount_value', formatAmount(data.total_amount));
        } catch(e) {
            // Silently fail on refresh errors
        }
    }

    async function refreshUsers() {
        try {
            var url = buildUrl('api/get_user_stats.dspy');
            var resp = await fetch(url, { credentials: 'include' });
            if (!resp.ok) return;
            var data = await resp.json();
            updateCard('total_users_value', formatNumber(data.total_users));
            updateCard('concurrent_users_value', formatNumber(data.concurrent_users));
        } catch(e) {
            // Silently fail on refresh errors
        }
    }

    async function refreshChart() {
        try {
            var chart = bricks.app.find_widget_by_id('top_models_chart');
            if (chart && chart.render_urldata) {
                await chart.render_urldata({});
            }
        } catch(e) {
            // Silently fail on refresh errors
        }
    }

    async function refreshAll() {
        await refreshStats();
        await refreshUsers();
        await refreshChart();
    }

    // Start auto-refresh every 10 seconds
    // Delay initial load to allow bricks framework to initialize
    setTimeout(function() {
        refreshAll();
        setInterval(refreshAll, 10000);
    }, 1000);

})();