/* Copyright (c) 2025-2026 马建军. All rights reserved.
 * 交易日历 — 按日汇总平仓与复盘
 */
(function () {
    var calYear = 0;
    var calMonth = 0;
    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 fmtNum(v) {
        if (v === null || v === undefined || v === '') return '-';
        var n = Number(v);
        if (isNaN(n)) return String(v);
        return Number.isInteger(n) ? String(n) : n.toFixed(2);
    }

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

    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('trade-cal-title');
        if (!title) return;
        if (window.qihuoLunar && qihuoLunar.monthTitle) {
            title.textContent = qihuoLunar.monthTitle(calYear, calMonth);
        } else {
            title.textContent = '公历 ' + calYear + '年' + calMonth + '月';
        }
    }

    function lunarCellHtml(iso) {
        if (!window.qihuoLunar) return '';
        var text = qihuoLunar.cellLunarText(iso);
        var info = qihuoLunar.fromIso(iso);
        var cls = 'trade-cal-day-lunar';
        if (info.lunarDay === 1) cls += ' is-month-start';
        return '<span class="' + cls + '">' + text + '</span>';
    }

    function renderCalendar(data) {
        var grid = document.getElementById('trade-cal-grid');
        if (!grid) return;
        setCalendarTitle();
        var html = '';
        var pad = data.weekday_start || 0;
        var i;
        for (i = 0; i < pad; i++) {
            html += '<div class="trade-cal-cell is-empty"></div>';
        }
        (data.days || []).forEach(function (day) {
            var dayNum = day.date.slice(8, 10).replace(/^0/, '');
            var classes = ['trade-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="trade-cal-day-head">';
            html += '<span class="trade-cal-day-solar">' + dayNum + '</span>';
            html += lunarCellHtml(day.date);
            html += '</div>';
            if (day.count > 0) {
                html += '<div class="trade-cal-meta"><div class="trade-cal-count">' + day.count + ' 笔</div>';
                html += '<div class="trade-cal-pnl ' + pnlClass(day.total_net) + '">' + fmtPnlShort(day.total_net) + '</div>';
                if (day.has_emotion) {
                    html += '<span class="trade-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('trade-cal-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('trade-cal-day-detail');
        if (panel) panel.hidden = true;
    }

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

        var label = data.date.replace(/-/g, '/');
        var lunarPart = window.qihuoLunar ? '（' + qihuoLunar.daySubtitle(data.date) + '）' : '';
        if (title) title.textContent = label + lunarPart + ' 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 = 'trade-cal-day-item' + (item.is_emotion ? ' is-emotion' : '');

            var head = document.createElement('div');
            head.className = 'trade-cal-day-item-head';
            var sym = document.createElement('div');
            sym.className = 'trade-cal-day-item-symbol';
            sym.textContent = (item.symbol || item.symbol_code || '-') + ' · ' + (item.direction || '-');
            var pnl = document.createElement('div');
            pnl.className = 'trade-cal-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 = 'trade-cal-day-item-meta';
            var badges = '';
            if (item.source === 'review') {
                badges += '<span class="trade-cal-badge review">复盘</span>';
            }
            if (item.is_emotion) {
                badges += '<span class="trade-cal-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 = 'trade-cal-day-item-notes';
                tagEl.textContent = tags;
                card.appendChild(tagEl);
            }
            if (item.notes) {
                var notes = document.createElement('div');
                notes.className = 'trade-cal-day-item-notes';
                notes.textContent = item.notes;
                card.appendChild(notes);
            }
            if (item.screenshot) {
                var shot = document.createElement('div');
                shot.className = 'trade-cal-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('.trade-cal-cell.is-selected').forEach(function (el) {
            el.classList.remove('is-selected');
        });
        var cell = document.querySelector('.trade-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('trade-cal-day-detail');
                    if (panel) panel.scrollIntoView({ behavior: 'smooth', block: 'nearest' });
                }
            })
            .catch(function () {
                var panel = document.getElementById('trade-cal-day-detail');
                var list = document.getElementById('trade-cal-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('trade-cal-grid');
        if (!grid || grid.dataset.tradeCalBound) return;
        grid.dataset.tradeCalBound = '1';

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

        var prev = document.getElementById('trade-cal-prev');
        var next = document.getElementById('trade-cal-next');
        var todayBtn = document.getElementById('trade-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 bootCalendarPage() {
        if (!document.getElementById('trade-cal-grid')) return;
        var d = new Date();
        calYear = d.getFullYear();
        calMonth = d.getMonth() + 1;
        bindCalendar();
        loadCalendar();

        var params = new URLSearchParams(window.location.search);
        var dateParam = params.get('date');
        if (dateParam && /^\d{4}-\d{2}-\d{2}$/.test(dateParam)) {
            var parts = dateParam.split('-');
            calYear = parseInt(parts[0], 10);
            calMonth = parseInt(parts[1], 10);
            loadCalendar();
            setTimeout(function () { loadDayDetail(dateParam); }, 300);
        }
    }

    if (window.qihuoPageBoot) window.qihuoPageBoot(bootCalendarPage, '#trade-cal-grid');
    else if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', bootCalendarPage);
    else bootCalendarPage();
})();