/* Copyright (c) 2025-2026 马建军. All rights reserved.
 * 专有软件 — 未经授权禁止复制、传播、转售。
 * 详见 LICENSE.zh-CN.txt
 */
(function () {
    var cache = null;

    function fmtNum(v, suffix) {
        if (v === null || v === undefined || v === '') return '-';
        var n = Number(v);
        if (isNaN(n)) return String(v);
        var s = Number.isInteger(n) ? String(n) : n.toFixed(2);
        return suffix ? s + suffix : s;
    }

    function fmtMoney(v) {
        if (v === null || v === undefined) return '-';
        return fmtNum(v) + ' 元';
    }

    function fmtPct(v) {
        if (v === null || v === undefined) return '-';
        return fmtNum(v) + '%';
    }

    function setSummary(s) {
        var map = {
            total_trades: function () { return fmtNum(s.total_trades); },
            win_rate: function () { return fmtPct(s.win_rate); },
            avg_profit: function () { return fmtMoney(s.avg_profit); },
            avg_loss: function () { return fmtMoney(s.avg_loss); },
            profit_loss_ratio: function () { return fmtNum(s.profit_loss_ratio); },
            consecutive_losses: function () { return fmtNum(s.consecutive_losses); },
            max_drawdown: function () {
                var amt = fmtMoney(s.max_drawdown);
                var pct = s.max_drawdown_pct ? ' (' + fmtPct(s.max_drawdown_pct) + ')' : '';
                return amt + pct;
            },
            max_loss_amount: function () { return fmtMoney(s.max_loss_amount); },
            max_loss_pct: function () { return fmtPct(s.max_loss_pct); },
            max_profit_amount: function () { return fmtMoney(s.max_profit_amount); },
            max_profit_pct: function () { return fmtPct(s.max_profit_pct); },
            total_fee: function () { return fmtMoney(s.total_fee); },
            emotion_count: function () { return fmtNum(s.emotion_count); },
            emotion_ratio: function () { return fmtPct(s.emotion_ratio); },
        };
        document.querySelectorAll('#stats-summary [data-k]').forEach(function (el) {
            var key = el.getAttribute('data-k');
            el.textContent = map[key] ? map[key]() : '-';
        });
    }

    function fillViewSelect(views, selected) {
        var sel = document.getElementById('stats-view-select');
        if (!sel) return;
        sel.innerHTML = '';
        views.forEach(function (v) {
            var opt = document.createElement('option');
            opt.value = v.key;
            opt.textContent = v.label;
            if (v.key === selected) opt.selected = true;
            sel.appendChild(opt);
        });
    }

    function cellClass(key, val) {
        if (key === 'total_net' || key === 'max_profit' || key === 'avg_profit') {
            if (val > 0) return 'text-profit';
            if (val < 0) return 'text-loss';
        }
        if (key === 'max_loss' || key === 'avg_loss' || key === 'total_fee') {
            return 'text-loss';
        }
        return '';
    }

    function renderBreakdown(key) {
        if (!cache || !cache.breakdowns) return;
        var block = cache.breakdowns[key];
        var head = document.getElementById('stats-breakdown-head');
        var body = document.getElementById('stats-breakdown-body');
        if (!block || !head || !body) return;

        head.innerHTML = '';
        block.columns.forEach(function (col) {
            var th = document.createElement('th');
            th.textContent = col.label;
            head.appendChild(th);
        });

        body.innerHTML = '';
        if (!block.rows || !block.rows.length) {
            var tr = document.createElement('tr');
            var td = document.createElement('td');
            td.colSpan = block.columns.length;
            td.className = 'text-muted';
            td.textContent = '暂无数据';
            tr.appendChild(td);
            body.appendChild(tr);
            return;
        }

        block.rows.forEach(function (row) {
            var tr = document.createElement('tr');
            block.columns.forEach(function (col) {
                var td = document.createElement('td');
                var val = row[col.key];
                if (col.key === 'win_rate') {
                    td.textContent = fmtPct(val);
                } else if (col.key === 'label') {
                    td.textContent = val || '-';
                } else if (typeof val === 'number') {
                    td.textContent = fmtNum(val);
                    td.className = cellClass(col.key, val);
                } else {
                    td.textContent = val != null ? val : '-';
                }
                tr.appendChild(td);
            });
            body.appendChild(tr);
        });
    }

    function applyData(data) {
        cache = data;
        setSummary(data.summary || {});
        var views = data.views || [];
        var sel = document.getElementById('stats-view-select');
        var current = sel && sel.value ? sel.value : (views[0] && views[0].key);
        fillViewSelect(views, current);
        renderBreakdown(current);
        var updated = document.getElementById('stats-updated');
        if (updated) {
            updated.textContent = data.updated_at
                ? '统计更新于 ' + data.updated_at.replace('T', ' ')
                : '统计已加载';
        }
    }

    function loadStats() {
        fetch('/api/stats', { credentials: 'same-origin' })
            .then(function (r) {
                if (!r.ok) throw new Error('HTTP ' + r.status);
                return r.json();
            })
            .then(applyData)
            .catch(function () {
                var updated = document.getElementById('stats-updated');
                if (updated) updated.textContent = '加载失败，请刷新页面';
            });
    }

    var calYear = 0;
    var calMonth = 0;
    var calDays = [];
    var selectedDate = '';

    function pad2(n) {
        return n < 10 ? '0' + n : String(n);
    }

    function todayIso() {
        var d = new Date();
        return d.getFullYear() + '-' + pad2(d.getMonth() + 1) + '-' + pad2(d.getDate());
    }

    function pnlClass(v) {
        if (v > 0) return 'is-profit';
        if (v < 0) return 'is-loss';
        return 'is-flat';
    }

    function fmtPnlShort(v) {
        if (v === null || v === undefined) return '-';
        var n = Number(v);
        if (isNaN(n)) return '-';
        var s = Number.isInteger(n) ? String(n) : n.toFixed(0);
        return (n > 0 ? '+' : '') + s;
    }

    function fmtTime(v) {
        if (!v) return '-';
        return String(v).replace('T', ' ').slice(0, 16);
    }

    function fmtTags(item) {
        var tags = item.behavior_tags || '';
        if (item.is_emotion) {
            return tags ? '情绪单 · ' + tags : '情绪单';
        }
        return tags || '';
    }

    function setCalendarTitle() {
        var title = document.getElementById('stats-cal-title');
        if (title) title.textContent = calYear + '年' + calMonth + '月';
    }

    function renderCalendar(data) {
        var grid = document.getElementById('stats-calendar-grid');
        if (!grid) return;
        calDays = data.days || [];
        setCalendarTitle();
        var html = '';
        var pad = data.weekday_start || 0;
        var i;
        for (i = 0; i < pad; i++) {
            html += '<div class="stats-cal-cell is-empty"></div>';
        }
        calDays.forEach(function (day) {
            var dayNum = day.date.slice(8, 10).replace(/^0/, '');
            var classes = ['stats-cal-cell'];
            if (day.count > 0) classes.push('is-clickable');
            if (day.date === todayIso()) classes.push('is-today');
            if (day.date === selectedDate) classes.push('is-selected');
            if (day.has_emotion) classes.push('is-emotion');
            html += '<div class="' + classes.join(' ') + '" data-date="' + day.date + '" role="button" tabindex="' + (day.count > 0 ? '0' : '-1') + '">';
            html += '<div class="stats-cal-day-num">' + dayNum + '</div>';
            if (day.count > 0) {
                html += '<div class="stats-cal-meta"><div class="stats-cal-count">' + day.count + ' 笔</div>';
                html += '<div class="stats-cal-pnl ' + pnlClass(day.total_net) + '">' + fmtPnlShort(day.total_net) + '</div>';
                if (day.has_emotion) {
                    html += '<span class="stats-cal-emotion">情绪' + (day.emotion_count > 1 ? '×' + day.emotion_count : '') + '</span>';
                }
                html += '</div>';
            }
            html += '</div>';
        });
        grid.innerHTML = html;
    }

    function loadCalendar() {
        fetch('/api/stats/calendar?year=' + calYear + '&month=' + calMonth, { credentials: 'same-origin' })
            .then(function (r) {
                if (!r.ok) throw new Error('HTTP ' + r.status);
                return r.json();
            })
            .then(function (data) {
                renderCalendar(data);
                if (selectedDate && selectedDate.slice(0, 7) === calYear + '-' + pad2(calMonth)) {
                    loadDayDetail(selectedDate, false);
                } else {
                    hideDayDetail();
                }
            })
            .catch(function () {
                var grid = document.getElementById('stats-calendar-grid');
                if (grid) grid.innerHTML = '<div class="text-muted" style="grid-column:1/-1">日历加载失败</div>';
            });
    }

    function hideDayDetail() {
        var panel = document.getElementById('stats-day-detail');
        if (panel) panel.hidden = true;
    }

    function renderDayDetail(data) {
        var panel = document.getElementById('stats-day-detail');
        var title = document.getElementById('stats-day-detail-title');
        var summary = document.getElementById('stats-day-summary');
        var list = document.getElementById('stats-day-list');
        if (!panel || !list) return;

        var label = data.date.replace(/-/g, '/');
        if (title) title.textContent = label + ' 交易记录';
        if (summary) {
            var parts = [data.count + ' 笔', '净盈亏 ' + fmtMoney(data.total_net)];
            if (data.emotion_count) parts.push('情绪单 ' + data.emotion_count);
            summary.textContent = parts.join(' · ');
        }

        list.innerHTML = '';
        if (!data.items || !data.items.length) {
            list.innerHTML = '<div class="text-muted">当日无平仓记录</div>';
            panel.hidden = false;
            return;
        }

        data.items.forEach(function (item) {
            var card = document.createElement('div');
            card.className = 'stats-day-item' + (item.is_emotion ? ' is-emotion' : '');

            var head = document.createElement('div');
            head.className = 'stats-day-item-head';
            var sym = document.createElement('div');
            sym.className = 'stats-day-item-symbol';
            sym.textContent = (item.symbol || item.symbol_code || '-') + ' · ' + (item.direction || '-');
            var pnl = document.createElement('div');
            pnl.className = 'stats-day-item-pnl ' + pnlClass(item.pnl_net);
            pnl.textContent = fmtMoney(item.pnl_net);
            head.appendChild(sym);
            head.appendChild(pnl);

            var meta = document.createElement('div');
            meta.className = 'stats-day-item-meta';
            var badges = '';
            if (item.source === 'review') {
                badges += '<span class="stats-day-badge review">复盘</span>';
            }
            if (item.is_emotion) {
                badges += '<span class="stats-day-badge emotion">情绪单</span>';
            }
            var metaParts = [
                badges,
                '平仓 ' + fmtTime(item.close_time),
                item.lots != null ? item.lots + ' 手' : '',
                item.entry_price != null ? '开 ' + item.entry_price : '',
                item.close_price != null ? '平 ' + item.close_price : '',
            ];
            if (item.source === 'review' && item.open_type) metaParts.push(item.open_type);
            if (item.source === 'review' && item.exit_trigger) metaParts.push('出场: ' + item.exit_trigger);
            if (item.result) metaParts.push(item.result);
            meta.innerHTML = metaParts.filter(Boolean).join(' · ');

            card.appendChild(head);
            card.appendChild(meta);

            var tags = fmtTags(item);
            if (tags) {
                var tagEl = document.createElement('div');
                tagEl.className = 'stats-day-item-notes';
                tagEl.textContent = tags;
                card.appendChild(tagEl);
            }
            if (item.notes) {
                var notes = document.createElement('div');
                notes.className = 'stats-day-item-notes';
                notes.textContent = item.notes;
                card.appendChild(notes);
            }
            if (item.screenshot) {
                var shot = document.createElement('div');
                shot.className = 'stats-day-item-shot';
                shot.innerHTML = '<img src="/uploads/' + item.screenshot + '" alt="复盘截图">';
                card.appendChild(shot);
            }
            list.appendChild(card);
        });
        panel.hidden = false;
    }

    function loadDayDetail(dateStr, scroll) {
        if (scroll === undefined) scroll = true;
        selectedDate = dateStr;
        document.querySelectorAll('.stats-cal-cell.is-selected').forEach(function (el) {
            el.classList.remove('is-selected');
        });
        var cell = document.querySelector('.stats-cal-cell[data-date="' + dateStr + '"]');
        if (cell) cell.classList.add('is-selected');

        fetch('/api/stats/calendar/day?date=' + encodeURIComponent(dateStr), { credentials: 'same-origin' })
            .then(function (r) {
                if (!r.ok) throw new Error('HTTP ' + r.status);
                return r.json();
            })
            .then(function (data) {
                renderDayDetail(data);
                if (scroll) {
                    var panel = document.getElementById('stats-day-detail');
                    if (panel) panel.scrollIntoView({ behavior: 'smooth', block: 'nearest' });
                }
            })
            .catch(function () {
                var panel = document.getElementById('stats-day-detail');
                var list = document.getElementById('stats-day-list');
                if (panel && list) {
                    list.innerHTML = '<div class="text-muted">加载失败</div>';
                    panel.hidden = false;
                }
            });
    }

    function shiftCalendarMonth(delta) {
        calMonth += delta;
        if (calMonth > 12) {
            calMonth = 1;
            calYear += 1;
        } else if (calMonth < 1) {
            calMonth = 12;
            calYear -= 1;
        }
        loadCalendar();
    }

    function bindCalendar() {
        var grid = document.getElementById('stats-calendar-grid');
        if (!grid || grid.dataset.statsCalBound) return;
        grid.dataset.statsCalBound = '1';

        grid.addEventListener('click', function (e) {
            var cell = e.target.closest('.stats-cal-cell.is-clickable');
            if (!cell) return;
            loadDayDetail(cell.getAttribute('data-date'));
        });
        grid.addEventListener('keydown', function (e) {
            if (e.key !== 'Enter' && e.key !== ' ') return;
            var cell = e.target.closest('.stats-cal-cell.is-clickable');
            if (!cell) return;
            e.preventDefault();
            loadDayDetail(cell.getAttribute('data-date'));
        });

        var prev = document.getElementById('stats-cal-prev');
        var next = document.getElementById('stats-cal-next');
        var todayBtn = document.getElementById('stats-cal-today');
        if (prev) prev.addEventListener('click', function () { shiftCalendarMonth(-1); });
        if (next) next.addEventListener('click', function () { shiftCalendarMonth(1); });
        if (todayBtn) todayBtn.addEventListener('click', function () {
            var d = new Date();
            calYear = d.getFullYear();
            calMonth = d.getMonth() + 1;
            loadCalendar();
        });
    }

    function initCalendar() {
        if (!document.getElementById('stats-calendar-grid')) return;
        var d = new Date();
        calYear = d.getFullYear();
        calMonth = d.getMonth() + 1;
        bindCalendar();
        loadCalendar();
    }

    function bootStatsPage() {
        if (!document.getElementById('stats-summary')) return;
        var viewSel = document.getElementById('stats-view-select');
        if (viewSel && !viewSel.dataset.statsBound) {
            viewSel.dataset.statsBound = '1';
            viewSel.addEventListener('change', function () {
                renderBreakdown(this.value);
            });
        }
        loadStats();
        initCalendar();
    }

    if (window.qihuoPageBoot) window.qihuoPageBoot(bootStatsPage, '#stats-summary');
    else if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', bootStatsPage);
    else bootStatsPage();
})();