/**
 * 投资资讯日报 前端逻辑
 * 数据源: https://api.doorcome.cn/api/news/reports/ (日报列表/详情)
 *        https://api.doorcome.cn/api/news/events/ (重要事件聚合, 预留)
 * 模式 B: 页面加载后由 JS fetch 获取数据并渲染, 无服务端注入
 */
var NewsReports = {
    API_REPORTS: 'https://api.doorcome.cn/api/news/reports/',
    API_EVENTS: 'https://api.doorcome.cn/api/news/events/',

    // 类型/section 中文映射
    TYPE_NAMES: { finance: '国内投资资讯', intl: '国际投资资讯' },
    SECTION_NAMES: { xwlb: '新闻联播要闻', news: '重要事件 · 财经新闻', cninfo: '重要事件 · 公告/调研/互动', intl: '国际要闻' },
    SECTION_ICONS: { xwlb: 'fa-tower-broadcast', news: 'fa-fire', cninfo: 'fa-clipboard-list', intl: 'fa-earth-asia' },
    SENTIMENT: { positive: { icon: '🟢', cls: 'badge-pos', txt: '利好' }, negative: { icon: '🔴', cls: 'badge-neg', txt: '利空' }, neutral: { icon: '⚪', cls: 'badge-neu', txt: '中性' } },

    state: { reportType: '', startDate: '', endDate: '', currentId: null },

    init: function () {
        var now = new Date();
        var start = new Date(now.getTime() - 30 * 86400000);
        this.state.startDate = this.fmtDate(start);
        this.state.endDate = this.fmtDate(now);

        this.bindEvents();
        this.loadReports();
    },

    fmtDate: function (d) {
        return d.getFullYear() + '-' + this.pad2(d.getMonth() + 1) + '-' + this.pad2(d.getDate());
    },
    pad2: function (n) { return n < 10 ? '0' + n : '' + n; },

    // 时间显示: 2026-08-03T07:00:00 -> 2026-08-03 07:00
    fmtTime: function (iso) {
        if (!iso) return '';
        return iso.replace('T', ' ').substring(0, 16);
    },

    bindEvents: function () {
        var self = this;
        // 类型 Tabs
        $('.type-tab').on('click', function () {
            $('.type-tab').removeClass('tab-active');
            $(this).addClass('tab-active');
            self.state.reportType = $(this).data('type');
            self.loadReports();
        });
        // 查询按钮
        $('#btnQuery').on('click', function () {
            self.state.startDate = $('#startDate').val() || self.state.startDate;
            self.state.endDate = $('#endDate').val() || self.state.endDate;
            self.loadReports();
        });
        // 返回列表
        $('#btnBack').on('click', function () {
            self.showList();
        });
    },

    // ==================== 列表 ====================
    loadReports: function () {
        var self = this;
        this.showLoading('正在加载日报列表...');
        var url = this.API_REPORTS + '?start_date=' + this.state.startDate + '&end_date=' + this.state.endDate;
        if (this.state.reportType) url += '&report_type=' + this.state.reportType;

        $.getJSON(url)
            .done(function (data) {
                if (!Array.isArray(data) || data.length === 0) {
                    self.renderEmpty();
                    return;
                }
                self.state.reports = data;
                self.renderList(data);
            })
            .fail(function (xhr) {
                self.renderError('列表加载失败', xhr);
            });
    },

    renderList: function (reports) {
        var self = this;
        var html = '';
        reports.forEach(function (r) {
            var typeName = self.TYPE_NAMES[r.report_type] || r.report_type;
            var typeCls = r.report_type === 'finance' ? 'badge-finance' : 'badge-intl';
            var summary = self.truncate(r.ai_summary || '', 140);
            var statBits = self.listStatBits(r);
            html += '' +
                '<div class="report-card aos-init" data-id="' + r.id + '" onclick="NewsReports.openDetail(' + r.id + ')">' +
                    '<div class="flex items-start justify-between gap-3">' +
                        '<div class="flex items-center gap-2 flex-wrap">' +
                            '<span class="badge ' + typeCls + '">' + typeName + '</span>' +
                            '<span class="text-lg font-bold text-dark">' + r.report_date + '</span>' +
                            '<span class="text-sm text-gray-400"><i class="fa-regular fa-clock mr-1"></i>' + self.fmtTime(r.generated_at) + ' 生成</span>' +
                        '</div>' +
                        '<button class="btn-view"><i class="fa-solid fa-book-open mr-1"></i>查看</button>' +
                    '</div>' +
                    '<p class="mt-2.5 text-base text-gray-600 leading-relaxed line-clamp-3">' + summary + '</p>' +
                    (statBits ? '<div class="mt-3 flex flex-wrap gap-2">' + statBits + '</div>' : '') +
                '</div>';
        });
        $('#reportList').html(html);
        this.hideLoading();
        this.updateRangeInfo(reports);
    },

    // 列表卡片上的统计数据小徽章 (防御性读取)
    listStatBits: function (r) {
        var bits = [];
        var s = r.stats || {};
        if (s.xwlb && s.xwlb.total) bits.push('<span class="stat-bit"><i class="fa-solid fa-tower-broadcast text-sky-600"></i>新闻联播 ' + s.xwlb.total + '</span>');
        if (s.news && s.news.total) bits.push('<span class="stat-bit"><i class="fa-solid fa-newspaper text-indigo-600"></i>财经新闻 ' + s.news.total + '</span>');
        if (s.cninfo && s.cninfo.total) bits.push('<span class="stat-bit"><i class="fa-solid fa-clipboard-list text-emerald-600"></i>公告调研 ' + s.cninfo.total + '</span>');
        if (s.source_dist && s.source_dist.length) bits.push('<span class="stat-bit"><i class="fa-solid fa-globe text-teal-600"></i>来源 ' + s.source_dist.length + '</span>');
        if (s.sources) bits.push('<span class="stat-bit"><i class="fa-solid fa-globe text-teal-600"></i>来源 ' + Object.keys(s.sources).length + '</span>');
        if (s.pipeline) {
            var p = s.pipeline;
            var pKeys = Object.keys(p);
            for (var i = pKeys.length - 1; i >= 0; i--) {
                var pv = p[pKeys[i]];
                if (pv == null || typeof pv === 'object') continue;
                bits.push('<span class="stat-bit"><i class="fa-solid fa-database text-slate-600"></i>' + pKeys[i] + ' ' + pv + '</span>');
                break;
            }
        }
        return bits.join('');
    },

    truncate: function (txt, n) {
        txt = (txt || '').replace(/\s+/g, ' ').trim();
        if (!txt) return '（无摘要）';
        return txt.length > n ? txt.substring(0, n) + '…' : txt;
    },

    updateRangeInfo: function (reports) {
        var dates = reports.map(function (r) { return r.report_date; });
        $('#rangeInfo').text('共 ' + reports.length + ' 份日报' + (dates.length ? ' · ' + dates[0] + ' ~ ' + dates[dates.length - 1] : ''));
    },

    renderEmpty: function () {
        $('#reportList').html('<div class="empty-box"><i class="fa-solid fa-inbox"></i><p>该时间段暂无日报</p></div>');
        $('#rangeInfo').text('');
        this.hideLoading();
    },

    renderError: function (msg, xhr) {
        var detail = '';
        if (xhr && xhr.responseJSON && xhr.responseJSON.error) detail = xhr.responseJSON.error;
        $('#reportList').html('<div class="empty-box"><i class="fa-solid fa-triangle-exclamation text-red-500"></i><p>' + msg + '</p>' + (detail ? '<p class="text-sm text-gray-400">' + detail + '</p>' : '') + '</div>');
        this.hideLoading();
    },

    // ==================== 详情 ====================
    openDetail: function (id) {
        var self = this;
        this.state.currentId = id;
        this.showDetail();
        this.showLoading('正在加载日报详情...');
        $('#detailContent').html('');

        $.getJSON(this.API_REPORTS + '?id=' + id)
            .done(function (r) {
                self.renderDetail(r);
                self.hideLoading();
                window.scrollTo({ top: 0, behavior: 'smooth' });
            })
            .fail(function (xhr) {
                self.renderError('日报详情加载失败', xhr);
                self.hideLoading();
            });
    },

    renderDetail: function (r) {
        var self = this;
        var typeName = this.TYPE_NAMES[r.report_type] || r.report_type;
        var typeCls = r.report_type === 'finance' ? 'badge-finance' : 'badge-intl';

        // 头部
        $('#detailHeader').html(
            '<span class="badge ' + typeCls + '">' + typeName + '</span>' +
            '<span class="text-xl font-bold text-dark">' + r.report_date + ' 日报</span>' +
            '<span class="text-sm text-gray-400"><i class="fa-regular fa-clock mr-1"></i>' + this.fmtTime(r.generated_at) + ' 生成</span>'
        );

        var html = '';
        // ① AI 摘要
        html += this.renderSummary(r.ai_summary);
        // ② 事件模块 (固定顺序: 国内 xwlb→news→cninfo, 国际 intl)
        var sections = r.report_type === 'finance' ? ['xwlb', 'news', 'cninfo'] : ['intl'];
        var events = r.events || [];
        sections.forEach(function (sec) {
            var secEvents = events.filter(function (e) { return e.section === sec; });
            if (secEvents.length === 0) return;
            html += self.renderEventModule(sec, secEvents);
        });
        // ③ 数据总览
        html += this.renderStats(r.stats);
        $('#detailContent').html(html);
        this.bindEventHover();
    },

    // AI 摘要: 按条目分行渲染
    renderSummary: function (summary) {
        if (!summary) return '';
        var items = summary.split('\n').map(function (s) { return s.replace(/^[-*\s]+/, '').trim(); }).filter(Boolean);
        if (items.length === 0) return '';
        var lis = items.map(function (s) { return '<li>' + selfEscape(s) + '</li>'; }).join('');
        return '' +
            '<div class="module-card">' +
                '<div class="module-title"><i class="fa-solid fa-wand-magic-sparkles text-indigo-600"></i>AI 摘要</div>' +
                '<ul class="ai-summary-list">' + lis + '</ul>' +
            '</div>';
    },

    // 事件模块
    renderEventModule: function (sec, events) {
        var self = this;
        var name = this.SECTION_NAMES[sec] || sec;
        var icon = this.SECTION_ICONS[sec] || 'fa-list';
        var imp = events.filter(function (e) { return e.importance >= 4; }).length;
        var rows = events.map(function (e, i) { return self.renderEventRow(e, i + 1); }).join('');
        return '' +
            '<div class="module-card">' +
                '<div class="module-title"><i class="fa-solid ' + icon + ' text-indigo-600"></i>' + name +
                    '<span class="module-sub">共 ' + events.length + ' 条' + (imp ? ' · 重要(≥4) ' + imp + ' 条' : '') + '</span>' +
                '</div>' +
                '<div class="divide-y divide-gray-100">' + rows + '</div>' +
            '</div>';
    },

    renderEventRow: function (e, idx) {
        var sen = this.SENTIMENT[e.sentiment] || this.SENTIMENT.neutral;
        var impCls = e.importance >= 5 ? 'imp-5' : (e.importance >= 4 ? 'imp-4' : '');
        var title = selfEscape(e.title || '');
        if (e.url) title = '<a href="' + selfEscape(e.url) + '" target="_blank" rel="noopener" class="event-link">' + title + '<i class="fa-solid fa-up-right-from-square ml-1 text-xs"></i></a>';
        var summary = e.summary ? '<p class="event-summary">' + selfEscape(e.summary) + '</p>' : '';
        var meta = [];
        if (e.event_type) meta.push('<span class="meta-item"><i class="fa-regular fa-tag mr-1"></i>' + selfEscape(e.event_type) + '</span>');
        if (e.source) meta.push('<span class="meta-item"><i class="fa-regular fa-newspaper mr-1"></i>' + selfEscape(e.source) + '</span>');
        return '' +
            '<div class="event-row">' +
                '<div class="event-left">' +
                    '<span class="event-rank">' + idx + '</span>' +
                    '<span class="badge ' + sen.cls + '" title="' + sen.txt + '">' + sen.icon + '</span>' +
                '</div>' +
                '<div class="event-body">' +
                    '<div class="event-title-line">' +
                        '<span class="imp-badge ' + impCls + '">' + (e.importance != null ? e.importance : '-') + '</span>' +
                        '<div class="event-title">' + title + '</div>' +
                    '</div>' +
                    summary +
                    (meta.length ? '<div class="event-meta">' + meta.join('') + '</div>' : '') +
                '</div>' +
            '</div>';
    },

    // ==================== 数据总览 ====================
    // stats 格式随生成日期变化(2026-08 前后两套结构), 统一归一化后渲染:
    //   A. 字符串数组 ["🟢 利好 5 (11%)", ...]   (intl / finance旧版 sentiment)
    //   B. 对象 {"1": 81, "2": 265} / {"东方财富": 16}  (importances / sources)
    //   C. 对象数组 [{"重要度":"等级 2","数量":"4"}] 或合并格式 [{"重要度":"数量","等级 1":"46"}]
    normalizeKV: function (data) {
        var out = [];
        if (!data) return out;
        if (Array.isArray(data)) {
            data.forEach(function (item) {
                if (item == null) return;
                if (typeof item === 'string' || typeof item === 'number') {
                    out.push({ label: String(item), value: '' });
                } else if (typeof item === 'object') {
                    if (item['重要度'] === '数量') {
                        // 合并格式: {"重要度":"数量","等级 1":"46",...} → 展开各等级键
                        Object.keys(item).forEach(function (k) {
                            if (k === '重要度') return;
                            out.push({ label: k, value: item[k] });
                        });
                        return;
                    }
                    if ('数量' in item) {
                        if (item['数量'] === '数量') {
                            // 合并格式: {"重要度":"数量","等级 1":"46",...} → 展开各等级键
                            Object.keys(item).forEach(function (k) {
                                if (k === '重要度') return;
                                out.push({ label: k, value: item[k] });
                            });
                        } else {
                            var lk = Object.keys(item).filter(function (k) { return k !== '数量'; })[0];
                            out.push({ label: lk ? item[lk] : '—', value: item['数量'] });
                        }
                        return;
                    }
                    var keys = Object.keys(item);
                    if (keys.length >= 2) out.push({ label: item[keys[0]], value: item[keys[1]] });
                    else if (keys.length === 1) out.push({ label: keys[0], value: item[keys[0]] });
                }
            });
        } else if (typeof data === 'object') {
            Object.keys(data).forEach(function (k) {
                var v = data[k];
                if (v == null || typeof v === 'object') return; // 嵌套对象跳过, 单独处理
                out.push({ label: k, value: v });
            });
        }
        return out;
    },

    renderStats: function (s) {
        if (!s) return '';
        var html = '<div class="module-card">' +
            '<div class="module-title"><i class="fa-solid fa-chart-simple text-indigo-600"></i>数据总览</div>';

        // pipeline 管道 (M1→M6 / raw_total 两种键名, 嵌套对象为来源明细)
        if (s.pipeline) {
            var keys = Object.keys(s.pipeline);
            var nums = keys.filter(function (k) { return typeof s.pipeline[k] !== 'object'; });
            if (nums.length) {
                html += '<div class="stats-grid">';
                nums.forEach(function (k) {
                    var v = s.pipeline[k];
                    if (v == null) return;
                    html += '<div class="stat-card"><div class="stat-num">' + v + '</div><div class="stat-label">' + selfEscape(String(k).replace(/^M\d+\s*/, 'M')) + '</div></div>';
                });
                html += '</div>';
            }
            keys.forEach(function (k) {
                var v = s.pipeline[k];
                if (v == null || typeof v !== 'object') return;
                var label = String(k).replace(/^M\d+\s*/, '');
                html += '<div class="stats-sub-title">' + selfEscape(label) + '</div><div class="source-grid">';
                Object.keys(v).forEach(function (sk) {
                    html += '<div class="source-item"><div class="s-count">' + v[sk] + '</div><div class="s-name">' + selfEscape(sk) + '</div></div>';
                });
                html += '</div>';
            });
        }

        // finance: news / cninfo / xwlb 统计
        if (s.news) html += this.renderFinanceNewsStats(s.news);
        if (s.cninfo) html += this.renderCninfoStats(s.cninfo);
        if (s.xwlb) html += this.renderXwlbStats(s.xwlb);

        // 顶层: sentiment / importance / event_types / source_dist / sources (intl & finance旧版)
        if (s.sentiment && s.sentiment.length) html += this.renderSentiment(s.sentiment);
        if (s.importance && s.importance.length) html += this.renderKVTable('重要度分布', s.importance);
        if (s.event_types && s.event_types.length) html += this.renderKVTable('事件类型分布', s.event_types);
        if (s.source_dist && s.source_dist.length) html += this.renderKVTable('来源分布', s.source_dist);
        if (s.sources) html += this.renderSources(s.sources);

        html += '</div>';
        return html;
    },

    renderFinanceNewsStats: function (news) {
        var html = '<div class="stats-sub">';
        if (news.total != null) html += '<div class="stat-card"><div class="stat-num">' + news.total + '</div><div class="stat-label">新闻总量</div></div>';
        if (news.hi_threshold != null) html += '<div class="stat-card"><div class="stat-num">' + news.hi_threshold + '</div><div class="stat-label">重要(≥阈值)</div></div>';
        html += '</div>';
        if (news.sentiments) html += this.renderSentimentBar(news.sentiments);
        if (news.importances) html += this.renderKVTable('新闻重要度', news.importances);
        if (news.event_types && news.event_types.length) html += this.renderKVTable('新闻事件类型', news.event_types);
        return html;
    },

    // sentiment: 字符串数组(已含emoji/百分比, intl & finance旧版) 或 对象(finance新版 news.sentiments)
    renderSentiment: function (data) {
        if (data.length && typeof data[0] === 'string') {
            var items = data.map(function (s) { return '<span class="badge badge-neu">' + selfEscape(s) + '</span>'; }).join('');
            return '<div class="stats-sub-title">情感分布</div><div class="flex flex-wrap gap-2 mb-3">' + items + '</div>';
        }
        return this.renderSentimentBar(data);
    },

    renderCninfoStats: function (cn) {
        var html = '<div class="stats-sub">';
        if (cn.total != null) html += '<div class="stat-card"><div class="stat-num">' + cn.total + '</div><div class="stat-label">公告调研总量</div></div>';
        if (cn.hi_threshold != null) html += '<div class="stat-card"><div class="stat-num">' + cn.hi_threshold + '</div><div class="stat-label">重要(≥阈值)</div></div>';
        if (cn.announcement != null) html += '<div class="stat-card"><div class="stat-num">' + cn.announcement + '</div><div class="stat-label">公司公告</div></div>';
        if (cn.research != null) html += '<div class="stat-card"><div class="stat-num">' + cn.research + '</div><div class="stat-label">调研报告</div></div>';
        if (cn.irm != null) html += '<div class="stat-card"><div class="stat-num">' + cn.irm + '</div><div class="stat-label">互动易</div></div>';
        html += '</div>';
        if (cn.by_day) {
            var days = Object.keys(cn.by_day).sort();
            if (days.length) {
                html += '<div class="kv-table-wrap"><table class="kv-table"><thead><tr><th>日期</th><th>数量</th></tr></thead><tbody>';
                days.forEach(function (d) { html += '<tr><td>' + selfEscape(d) + '</td><td>' + cn.by_day[d] + '</td></tr>'; });
                html += '</tbody></table></div>';
            }
        }
        return html;
    },

    renderXwlbStats: function (xw) {
        var html = '<div class="stats-sub">';
        if (xw.total != null) html += '<div class="stat-card"><div class="stat-num">' + xw.total + '</div><div class="stat-label">新闻联播条数</div></div>';
        if (xw.date) html += '<div class="stat-card"><div class="stat-num text-sm">' + selfEscape(xw.date) + '</div><div class="stat-label">联播日期</div></div>';
        html += '</div>';
        return html;
    },

    renderKVTable: function (title, data) {
        var items = this.normalizeKV(data);
        if (!items.length) return '';
        var rows = items.map(function (it) {
            return '<tr><td>' + selfEscape(it.label) + '</td><td>' + (it.value === '' ? '' : selfEscape(it.value)) + '</td></tr>';
        }).join('');
        return '<div class="kv-table-wrap"><div class="kv-title">' + selfEscape(title) + '</div>' +
            '<table class="kv-table"><thead><tr><th>类别</th><th>数量</th></tr></thead><tbody>' + rows + '</tbody></table></div>';
    },

    renderSentimentBar: function (sent) {
        var pos = sent.positive || sent.pos || 0;
        var neg = sent.negative || sent.neg || 0;
        var neu = sent.neutral || sent.neu || 0;
        var total = pos + neg + neu;
        if (!total) return '';
        var pct = function (v) { return (v / total * 100).toFixed(1) + '%'; };
        return '' +
            '<div class="sentiment-wrap">' +
                '<div class="sentiment-bar"><div class="s-pos" style="width:' + pct(pos) + '"></div><div class="s-neg" style="width:' + pct(neg) + '"></div><div class="s-neu" style="width:' + pct(neu) + '"></div></div>' +
                '<div class="sentiment-legend">' +
                    '<span><i class="s-dot s-pos"></i>利好 ' + pos + ' (' + pct(pos) + ')</span>' +
                    '<span><i class="s-dot s-neg"></i>利空 ' + neg + ' (' + pct(neg) + ')</span>' +
                    '<span><i class="s-dot s-neu"></i>中性 ' + neu + ' (' + pct(neu) + ')</span>' +
                '</div>' +
            '</div>';
    },

    renderSources: function (sources) {
        var self = this;
        var keys = Object.keys(sources);
        if (!keys.length) return '';
        var items = keys.map(function (k) {
            return '<div class="source-item"><div class="s-count">' + sources[k] + '</div><div class="s-name">' + selfEscape(k) + '</div></div>';
        }).join('');
        return '<div class="stats-sub-title">各源数据</div><div class="source-grid">' + items + '</div>';
    },

    // ==================== UI 控制 ====================
    showList: function () {
        $('#listView').removeClass('hidden');
        $('#detailView').addClass('hidden');
        $('#detailHeader').html('');
        $('#detailContent').html('');
    },

    // 打开详情: 隐藏列表, 独占视口
    showDetail: function () {
        $('#listView').addClass('hidden');
        $('#detailView').removeClass('hidden');
    },

    showLoading: function (msg) {
        $('#loadingOverlay').removeClass('hidden');
        $('#loadingMsg').text(msg || '加载中...');
    },
    hideLoading: function () {
        $('#loadingOverlay').addClass('hidden');
    },

    bindEventHover: function () {
        // 事件行悬停样式已由 CSS 处理, 无需额外逻辑 (保留钩子)
    }
};

// HTML 转义 (防 XSS, 数据来自外部 API)
function selfEscape(str) {
    return String(str == null ? '' : str)
        .replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;')
        .replace(/"/g, '&quot;').replace(/'/g, '&#39;');
}

$(function () {
    NewsReports.init();
});