{% extends "base.html" %}

{% block title %}交易记录列表{% endblock %}

{% block content %}
<div class="container-fluid">
    <div class="row">
        <div class="col-12">
            <div class="card">
                <div class="card-header">
                    <h3 class="card-title">交易记录列表</h3>
                    <div class="card-tools">
                        <a href="{{ url_for('transaction.add') }}" class="btn btn-primary btn-sm">新增交易</a>
                        <a href="{{ url_for('transaction.import_view') }}" class="btn btn-success btn-sm">导入交易</a>
                    </div>
                </div>
                <div class="card-body">
                    <!-- 筛选表单 -->
                    <form id="filterForm" class="mb-3">
                        <div class="row">
                            <div class="col-md-3">
                                <div class="form-group">
                                    <label>时间范围</label>
                                    <div class="input-group">
                                        <input type="date" class="form-control" name="start_time">
                                        <div class="input-group-append">
                                            <span class="input-group-text">至</span>
                                        </div>
                                        <input type="date" class="form-control" name="end_time">
                                    </div>
                                </div>
                            </div>
                            <div class="col-md-2">
                                <div class="form-group">
                                    <label>合约名称</label>
                                    <input type="text" class="form-control" name="name">
                                </div>
                            </div>
                            <div class="col-md-2">
                                <div class="form-group">
                                    <label>合约代码</label>
                                    <input type="text" class="form-control" name="contract_code">
                                </div>
                            </div>
                            <div class="col-md-2">
                                <div class="form-group">
                                    <label>交易类型</label>
                                    <select class="form-control" name="trade_type">
                                        <option value="">全部</option>
                                        <option value="0">模拟交易</option>
                                        <option value="1">实盘交易</option>
                                    </select>
                                </div>
                            </div>
                            <div class="col-md-3">
                                <div class="form-group">
                                    <label>交易状态 (可多选)</label>
                                    <select class="form-control select2" name="trade_status[]" multiple="multiple" data-placeholder="选择状态">
                                        <option value="0">进行中</option>
                                        <option value="1">已暂停</option>
                                        <option value="2">暂停进行</option>
                                        <option value="3">已结束</option>
                                    </select>
                                </div>
                            </div>
                        </div>
                        <div class="row">
                            <div class="col-md-12 text-end">
                                <button type="submit" class="btn btn-primary">查询</button>
                            </div>
                        </div>
                    </form>

                    <!-- 数据表格 - 添加列冻结功能 -->
                    <div class="table-responsive" style="overflow-x: auto;">
                        <table class="table table-bordered table-striped table-sm sticky-table" style="min-width: 1800px;">
                            <thead>
                                <tr>
                                    <th class="sticky-left-1" style="min-width: 60px;">ID</th>
                                    <th class="sticky-left-2" style="min-width: 140px;">成交时间</th>
                                    <th class="sticky-left-3" style="min-width: 100px;">合约代码</th>
                                    <th style="min-width: 80px;">名称</th>
                                    <th style="min-width: 100px;">账户</th>
                                    <th style="min-width: 80px;">交易类别</th>
                                    <th style="min-width: 120px;">操作策略</th>
                                    <th style="min-width: 80px;">多空仓位</th>
                                    <th style="min-width: 100px;">K线形态</th>
                                    <th style="min-width: 100px;">成交价格</th>
                                    <th style="min-width: 100px;">成交手数</th>
                                    <th style="min-width: 100px;">保证金</th>
                                    <th style="min-width: 100px;">最新价格</th>
                                    <th style="min-width: 100px;">实际收益率</th>
                                    <th style="min-width: 100px;">实际收益</th>
                                    <th style="min-width: 100px;">止损价格</th>
                                    <th style="min-width: 100px;">止损比例</th>
                                    <th style="min-width: 100px;">止损收益</th>
                                    <th class="sticky-right" style="min-width: 120px;">操作</th>
                                </tr>
                            </thead>
                            <tbody id="transactionList">
                                <!-- 数据将通过JavaScript动态加载 -->
                            </tbody>
                        </table>
                    </div>
                    <!-- 分页控件和每页数量选择器 -->
                    <div class="d-flex justify-content-center align-items-center mt-3">
                        <nav aria-label="Page navigation" class="me-3">
                            <ul class="pagination mb-0" id="pagination">
                                <!-- 分页按钮将通过JavaScript动态加载 -->
                            </ul>
                        </nav>
                        <div class="d-flex align-items-center">
                            <label for="itemsPerPageSelect" class="col-form-label me-2 mb-0">每页:</label>
                            <select class="form-select form-select-sm" id="itemsPerPageSelect" style="width: auto;">
                                <option value="10">10</option>
                                <option value="20" selected>20</option>
                                <option value="50">50</option>
                                <option value="100">100</option>
                            </select>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>
{% endblock %}

{% block styles %}
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/select2@4.1.0-rc.0/dist/css/select2.min.css">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@ttskch/select2-bootstrap4-theme@x.x.x/dist/select2-bootstrap4.min.css">
<style>
    .select2-container--bootstrap4 .select2-selection--multiple {
        min-height: calc(1.5em + .75rem + 2px);
    }
    .select2-container--bootstrap4 .select2-selection--multiple .select2-selection__rendered {
        padding-bottom: 0;
    }
    
    /* 表格水平滚动样式 */
    .table-responsive {
        border: 1px solid #dee2e6;
        border-radius: 0.375rem;
    }
    
    .table-responsive::-webkit-scrollbar {
        height: 8px;
    }
    
    .table-responsive::-webkit-scrollbar-track {
        background: #f1f1f1;
        border-radius: 4px;
    }
    
    .table-responsive::-webkit-scrollbar-thumb {
        background: #c1c1c1;
        border-radius: 4px;
    }
    
    .table-responsive::-webkit-scrollbar-thumb:hover {
        background: #a8a8a8;
    }
    
    /* 列冻结样式 */
    .sticky-table {
        position: relative;
    }

    .sticky-table thead th {
        position: sticky;
        top: 0;
        z-index: 10;
        background-color: #f8f9fa; /* 统一表头背景色 */
    }

    /* 冻结列统一样式 */
    .sticky-table .sticky-left-1,
    .sticky-table .sticky-left-2,
    .sticky-table .sticky-left-3,
    .sticky-table .sticky-right {
        position: sticky;
        z-index: 11; /* 确保冻结列在普通表头之上 */
    }

    /* 左侧冻结列 */
    .sticky-left-1 { left: 0; }
    .sticky-left-2 { left: 60px; }
    .sticky-left-3 { left: 200px; }
    
    /* 右侧冻结列 */
    .sticky-right { right: 0; }
    
    /* 冻结列表头和内容单元格背景色 */
    .sticky-table th.sticky-left-1,
    .sticky-table th.sticky-left-2,
    .sticky-table th.sticky-left-3,
    .sticky-table th.sticky-right {
        background-color: #f8f9fa; /* 冻结列表头背景色 */
    }

    .sticky-table td.sticky-left-1,
    .sticky-table td.sticky-left-2,
    .sticky-table td.sticky-left-3,
    .sticky-table td.sticky-right {
        background-color: #fff; /* 冻结内容列背景色 */
    }
    
    /* 修复斑马纹表格下的背景色问题 */
    .table-striped > tbody > tr:nth-of-type(odd) > td.sticky-left-1,
    .table-striped > tbody > tr:nth-of-type(odd) > td.sticky-left-2,
    .table-striped > tbody > tr:nth-of-type(odd) > td.sticky-left-3,
    .table-striped > tbody > tr:nth-of-type(odd) > td.sticky-right {
        background-color: #f9f9f9; /* 斑马纹行冻结列背景色 */
    }
    
    /* 添加边框以示区分 */
    .sticky-left-3 { border-right: 2px solid #dee2e6; }
    .sticky-right { border-left: 2px solid #dee2e6; }

</style>
{% endblock %}

{% block scripts %}
<script src="https://cdn.jsdelivr.net/npm/select2@4.1.0-rc.0/dist/js/select2.min.js"></script>
<script>
function formatNumber(num, precision = 3) {
    if (num === null || num === undefined || isNaN(num)) {
        return '-';
    }
    let fixedNum = Number(parseFloat(num).toFixed(precision)); 
    return fixedNum.toString();
}

function formatPercentage(num, precision = 2) {
    if (num === null || num === undefined || isNaN(num)) {
        return '-';
    }
    let percentage = parseFloat(num) * 100;
    return formatNumber(percentage, precision) + '%';
}

// 判断是否可以显示平仓选项
function canShowCloseOption(item) {
    // 只有开仓交易（position_type: 0=开多, 2=开空）且状态不是已结束(3)的情况下才显示平仓选项
    return (item.position_type === 0 || item.position_type === 2) && item.trade_status !== 3;
}

$(document).ready(function() {
    $('.select2').select2({
        theme: 'bootstrap4',
        width: '100%'
    });

    let currentPage = 1;
    let currentItemsPerPage = parseInt($('#itemsPerPageSelect').val()) || 20;

    // Restore state from sessionStorage on page load or set defaults
    const savedFiltersJSON = sessionStorage.getItem('transactionFilters');
    if (savedFiltersJSON) {
        const savedFilters = JSON.parse(savedFiltersJSON);
        $('#filterForm [name="start_time"]').val(savedFilters.start_time);
        $('#filterForm [name="end_time"]').val(savedFilters.end_time);
        $('#filterForm [name="name"]').val(savedFilters.name);
        $('#filterForm [name="contract_code"]').val(savedFilters.contract_code);
        $('#filterForm [name="trade_type"]').val(savedFilters.trade_type);
        if (savedFilters.trade_status) {
            $('#filterForm [name="trade_status[]"]').val(savedFilters.trade_status).trigger('change');
        } else {
            // 如果没有保存的交易状态，设置默认选中"进行中"和"暂停进行"
            $('#filterForm [name="trade_status[]"]').val(['0', '2']).trigger('change');
        }
    } else {
        // 如果没有保存的筛选条件，设置默认选中"进行中"和"暂停进行"
        $('#filterForm [name="trade_status[]"]').val(['0', '2']).trigger('change');
    }

    const savedPage = sessionStorage.getItem('transactionCurrentPage');
    if (savedPage) {
        currentPage = parseInt(savedPage, 10);
    }

    const savedItemsPerPage = sessionStorage.getItem('transactionItemsPerPage');
    if (savedItemsPerPage) {
        currentItemsPerPage = parseInt(savedItemsPerPage, 10);
        $('#itemsPerPageSelect').val(currentItemsPerPage);
    }

    function loadTransactions(page = 1, filters = {}) {
        currentPage = page;
        filters.page = page;
        filters.limit = currentItemsPerPage;

        // Save current state to sessionStorage
        sessionStorage.setItem('transactionFilters', JSON.stringify(getFilters()));
        sessionStorage.setItem('transactionCurrentPage', currentPage);
        sessionStorage.setItem('transactionItemsPerPage', currentItemsPerPage);

        $('#transactionList').html(`<tr><td colspan="19" class="text-center">数据加载中...</td></tr>`);
        $('#pagination').empty();

        $.get("{{ url_for('transaction.get_list') }}", filters, function(response) {
            if (response.code === 0) {
                let html = '';
                if (response.data && response.data.length > 0) {
                    response.data.forEach(function(item) {
                        html += `
                            <tr>
                                <td class="sticky-left-1">${item.id || '-'}</td>
                                <td class="sticky-left-2">${item.transaction_time || '-'}</td>
                                <td class="sticky-left-3">${item.contract_code || '-'}</td>
                                <td>${item.name || '-'}</td>
                                <td>${item.account || '-'}</td>
                                <td>${getTradeTypeText(item.trade_type)}</td>
                                <td>${item.strategy_name || '-'}</td>
                                <td>${getPositionTypeText(item.position_type)}</td>
                                <td>${item.candle_pattern || '-'}</td>
                                <td>${formatNumber(item.price, 3)}</td>
                                <td>${formatNumber(item.volume, 0)}</td>
                                <td>${formatNumber(item.margin, 2)}</td>
                                <td>${formatNumber(item.latest_price, 3)}</td>
                                <td class="${getProfitLossClass(item.actual_profit_rate)}">${formatPercentage(item.actual_profit_rate, 2)}</td>
                                <td class="${getProfitLossClass(item.actual_profit)}">${formatNumber(item.actual_profit, 2)}</td>
                                <td>${formatNumber(item.stop_loss_price, 3)}</td>
                                <td class="${getProfitLossClass(item.stop_loss_rate)}">${formatPercentage(item.stop_loss_rate, 2)}</td>
                                <td class="${getProfitLossClass(item.stop_loss_profit)}">${formatNumber(item.stop_loss_profit, 2)}</td>
                                <td class="sticky-right">
                                    <div class="btn-group">
                                        <button type="button" class="btn btn-secondary btn-sm dropdown-toggle" data-bs-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                                            操作
                                        </button>
                                        <div class="dropdown-menu">
                                            <a class="dropdown-item" href="/transaction/detail/view/${item.id}">详情</a>
                                            <a class="dropdown-item" href="/transaction/edit/${item.id}">编辑</a>
                                            ${canShowCloseOption(item) ? `
                                                <div class="dropdown-divider"></div>
                                                <a class="dropdown-item text-warning" href="/transaction/add?close_for_transaction=${item.id}">
                                                    <i class="fas fa-times-circle"></i> 平仓
                                                </a>
                                            ` : ''}
                                            <div class="dropdown-divider"></div>
                                            <button class="dropdown-item text-danger" onclick="deleteTransaction(${item.id})">删除</button>
                                        </div>
                                    </div>
                                </td>
                            </tr>
                        `;
                    });
                } else {
                    html = `<tr><td colspan="19" class="text-center">暂无数据</td></tr>`;
                }
                $('#transactionList').html(html);
                renderPagination(response.count, page, currentItemsPerPage);
            } else {
                $('#transactionList').html(`<tr><td colspan="19" class="text-center text-danger">加载失败：${response.msg}</td></tr>`);
            }
        }).fail(function(jqXHR, textStatus, errorThrown) {
            $('#transactionList').html(`<tr><td colspan="19" class="text-center text-danger">加载失败：${textStatus}</td></tr>`);
        });
    }

    function renderPagination(totalItems, currentPage, itemsPerPage) {
        const totalPages = Math.ceil(totalItems / itemsPerPage);
        let paginationHtml = '';

        if (totalPages <= 1) {
            $('#pagination').empty();
            $('#itemsPerPageSelect').closest('div').hide();
            return;
        } else {
            $('#itemsPerPageSelect').closest('div').show();
        }

        paginationHtml += `<li class="page-item ${currentPage === 1 ? 'disabled' : ''}">
                            <a class="page-link" href="#" data-page="${currentPage - 1}" aria-label="Previous">
                                <span aria-hidden="true">&laquo;</span>
                            </a>
                           </li>`;

        const maxPagesToShow = 5;
        let startPage = Math.max(1, currentPage - Math.floor(maxPagesToShow / 2));
        let endPage = Math.min(totalPages, startPage + maxPagesToShow - 1);

        if (endPage - startPage + 1 < maxPagesToShow) {
            startPage = Math.max(1, endPage - maxPagesToShow + 1);
        }

        if (startPage > 1) {
            paginationHtml += `<li class="page-item"><a class="page-link" href="#" data-page="1">1</a></li>`;
            if (startPage > 2) {
                paginationHtml += `<li class="page-item disabled"><span class="page-link">...</span></li>`;
            }
        }

        for (let i = startPage; i <= endPage; i++) {
            paginationHtml += `<li class="page-item ${i === currentPage ? 'active' : ''}">
                                <a class="page-link" href="#" data-page="${i}">${i}</a>
                               </li>`;
        }

        if (endPage < totalPages) {
            if (endPage < totalPages - 1) {
                paginationHtml += `<li class="page-item disabled"><span class="page-link">...</span></li>`;
            }
            paginationHtml += `<li class="page-item"><a class="page-link" href="#" data-page="${totalPages}">${totalPages}</a></li>`;
        }

        paginationHtml += `<li class="page-item ${currentPage === totalPages ? 'disabled' : ''}">
                            <a class="page-link" href="#" data-page="${currentPage + 1}" aria-label="Next">
                                <span aria-hidden="true">&raquo;</span>
                            </a>
                           </li>`;

        $('#pagination').html(paginationHtml);

        $('#pagination .page-link').on('click', function(e) {
            e.preventDefault();
            const page = $(this).data('page');
            if (page && page !== currentPage) {
                const filters = getFilters();
                loadTransactions(page, filters);
            }
        });
    }

    function getFilters() {
        const filters = {};
        $('#filterForm').serializeArray().forEach(function(item) {
            if (item.value) {
                if (item.name === 'trade_status[]') {
                    if (!filters['trade_status']) {
                        filters['trade_status'] = [];
                    }
                    filters['trade_status'].push(item.value);
                } else {
                    filters[item.name] = item.value;
                }
            }
        });
        return filters;
    }

    function getPositionTypeText(type) {
        const types = {
            0: '开多',
            1: '平多',
            2: '开空',
            3: '平空'
        };
        return types[type] || '未知';
    }

    function getTradeTypeText(type) {
        return type === 1 ? '实盘' : (type === 0 ? '模拟' : '未知');
    }

    function getProfitLossClass(value) {
        if (value === null || value === undefined || isNaN(value)) {
            return '';
        }
        const num = parseFloat(value);
        if (num > 0) return 'text-danger';
        if (num < 0) return 'text-success';
        return '';
    }

    window.deleteTransaction = function(id) {
        if (!id) return;
        if (confirm('确认要删除这条交易记录吗？(将同时删除关联汇总记录)')) {
            $.ajax({
                url: "/transaction/api/delete/" + id,
                type: 'DELETE',
                success: function(response) {
                    if (response.code === 0) {
                        alert('删除成功');
                        const filters = getFilters();
                        loadTransactions(currentPage, filters);
                    } else {
                        alert('删除失败：' + response.msg);
                    }
                },
                error: function(jqXHR, textStatus, errorThrown) {
                    alert('删除失败：' + textStatus);
                }
            });
        }
    }

    $('#filterForm').on('submit', function(e) {
        e.preventDefault();
        const filters = getFilters();
        loadTransactions(1, filters);
    });

    $('#itemsPerPageSelect').on('change', function() {
        currentItemsPerPage = parseInt($(this).val());
        const filters = getFilters();
        loadTransactions(1, filters);
    });

    // Initial load with restored state
    const initialFilters = getFilters();
    loadTransactions(currentPage, initialFilters);
});
</script>
{% endblock %}