// ============================================
// 通用列表管理 - 一次性加载
// ============================================

// 通用列表配置
const listConfig = {
  orderList: { endpoint: '/api/records/orders', emptyMsg: '暂无接单记录', renderItem: renderOrderItem },
  otherIncomeList: { endpoint: '/api/records/other-income', emptyMsg: '暂无红包及其他收入记录', renderItem: renderOtherIncomeItem },
  dispatchList: { endpoint: '/api/records/dispatches', emptyMsg: '暂无派单记录', renderItem: renderDispatchItem },
  redEnvelopeList: { endpoint: '/api/records/red-envelope', emptyMsg: '暂无红包收入记录', renderItem: renderRedEnvelopeItem },
  milkTeaList: { endpoint: '/api/records/milk-tea', emptyMsg: '暂无奶茶收入记录', renderItem: renderMilkTeaItem }
};

// 通用列表加载状态（按 listId 存储）
const listState = {
  orderList: { loading: false, records: [] },
  otherIncomeList: { loading: false, records: [] },
  dispatchList: { loading: false, records: [] },
  redEnvelopeList: { loading: false, records: [] },
  milkTeaList: { loading: false, records: [] }
};

// 初始化列表 - 清空状态
function initList(listId) {
  const state = listState[listId];
  if (!state) return;

  state.loading = false;
  state.records = [];

  const container = document.getElementById(listId);
  if (container) {
    container.innerHTML = '';
  }
}

// 加载列表数据
async function loadListData(listId) {
  const config = listConfig[listId];
  const state = listState[listId];
  if (!config || !state) return;

  // 防止重复加载
  if (state.loading) return;

  state.loading = true;
  showLoading(listId, true);

  try {
    const res = await fetch(API + config.endpoint + '?page=1&limit=1000&year=' + currentYear + '&month=' + currentMonth, { headers: headers() });

    if (!res.ok) {
      console.error(`[loadListData] fetch failed: ${res.status}`);
      state.loading = false;
      showLoading(listId, false);
      return;
    }

    const data = await res.json();

    state.records = data.records || [];

    renderList(listId);
  } catch (e) {
    console.error(`[loadListData] error:`, e);
  } finally {
    state.loading = false;
    showLoading(listId, false);
  }
}

// 显示/隐藏加载指示器
function showLoading(listId, show) {
  const loadingId = listId.replace('List', 'Loading');
  const loadingEl = document.getElementById(loadingId);
  if (loadingEl) {
    loadingEl.style.display = show ? 'block' : 'none';
  }
}

// 渲染列表
function renderList(listId) {
  const config = listConfig[listId];
  const state = listState[listId];
  if (!config || !state) return;

  const container = document.getElementById(listId);
  if (!container) return;

  if (state.records.length === 0) {
    container.innerHTML = '<div class="ranking-empty">' + config.emptyMsg + '</div>';
    return;
  }

  // 按日期分组
  const grouped = {};
  state.records.forEach(r => {
    const date = formatLocalDate(r.created_at);
    if (!grouped[date]) grouped[date] = [];
    grouped[date].push(r);
  });

  container.innerHTML = '';

  // 生成 HTML
  let html = '';
  for (const [date, records] of Object.entries(grouped)) {
    html += '<div class="order-date-group" data-date="' + date + '"><div class="order-date-label">' + date + '</div>';
    records.forEach(r => {
      html += config.renderItem(r);
    });
    html += '</div>';
  }

  container.innerHTML = html;
}

// ============================================
// 兼容接口
// ============================================
async function loadOrders() { return loadListData('orderList'); }
async function loadOtherIncome() { return loadListData('otherIncomeList'); }
async function loadDispatches() { return loadListData('dispatchList'); }
async function loadRedEnvelope() { return loadListData('redEnvelopeList'); }
async function loadMilkTea() { return loadListData('milkTeaList'); }

// ============================================
// 渲染函数
// ============================================

function renderOrderItem(r) {
  const time = formatLocalTime(r.created_at);
  return '<div class="order-item" onclick=\'openEditModal(' + JSON.stringify(r).replace(/'/g, "&#39;") + ')\'>' +
    '<div class="order-item-top"><span class="order-item-boss">' + (r.boss || '-') + '</span><span class="order-item-amount">' + (r.amount || 0).toFixed(2) + '</span></div>' +
    '<div class="order-item-bottom"><span>' + (r.quantity || 0) + '单 × ' + (r.unit_price || 0).toFixed(2) + '</span><span>' + time + (r.partner ? ' · ' + r.partner : '') + '</span></div></div>';
}

function renderOtherIncomeItem(r) {
  const time = formatLocalTime(r.created_at);
  const displayCategory = r.category === '红包收入' ? '红包' : (r.category || '-');
  return '<div class="order-item" onclick=\'openEditModal(' + JSON.stringify(r).replace(/'/g, "&#39;") + ')\'>' +
    '<div class="order-item-top"><span class="order-item-boss">' + displayCategory + (r.boss ? ' · ' + r.boss : '') + '</span><span class="order-item-amount">' + (r.amount || 0).toFixed(2) + '</span></div>' +
    '<div class="order-item-bottom"><span>' + (r.source || '') + '</span><span>' + time + '</span></div></div>';
}

function renderDispatchItem(r) {
  const time = formatLocalTime(r.created_at);
  const unitPrice = r.unit_price || (r.quantity ? r.amount / r.quantity : 0);
  return '<div class="order-item" onclick=\'openEditModal(' + JSON.stringify(r).replace(/'/g, "&#39;") + ')\'>' +
    '<div class="order-item-top"><span class="order-item-boss">' + (r.boss || '-') + '</span><span class="order-item-amount">' + (r.amount || 0).toFixed(2) + '</span></div>' +
    '<div class="order-item-bottom"><span>' + (r.quantity || 0) + '单 × ' + (r.rebate || 0).toFixed(2) + '（单价' + unitPrice.toFixed(2) + '）</span><span>' + time + (r.partner ? ' · ' + r.partner : '') + '</span></div></div>';
}

function renderRedEnvelopeItem(r) {
  const time = formatLocalTime(r.created_at);
  return '<div class="order-item" onclick=\'openEditModal(' + JSON.stringify(r).replace(/'/g, "&#39;") + ')\'>' +
    '<div class="order-item-top"><span class="order-item-boss">红包</span><span class="order-item-amount">' + (r.amount || 0).toFixed(2) + '</span></div>' +
    '<div class="order-item-bottom"><span>' + (r.source || '') + '</span><span>' + time + '</span></div></div>';
}

function renderMilkTeaItem(r) {
  const time = formatLocalTime(r.created_at);
  return '<div class="order-item" onclick=\'openEditModal(' + JSON.stringify(r).replace(/'/g, "&#39;") + ')\'>' +
    '<div class="order-item-top"><span class="order-item-boss">奶茶</span><span class="order-item-amount">' + (r.amount || 0).toFixed(2) + '</span></div>' +
    '<div class="order-item-bottom"><span>' + (r.source || '') + '</span><span>' + time + '</span></div></div>';
}