'use strict';

// 店铺运营页：上传人工统计表 → 按学校/店铺/日期看指标矩阵或卡片。
// 数据来自 /api/ops/*；原件存服务端存储（默认本地 SQLite），页面只做展示与上传。
(function () {
  const $ = (id) => document.getElementById(id);

  const META = {
    order_cnt: { label: '订单量', type: 'int' },
    revenue: { label: '营收', type: 'money' },
    exposure: { label: '曝光量', type: 'int' },
    click_rate: { label: '进店转化率', type: 'rate' },
  };
  const ALL_METRICS = Object.keys(META);
  const DEFAULT_METRICS = ALL_METRICS.slice();

  function loadJSON(key, fallback) {
    try {
      const raw = localStorage.getItem(key);
      if (!raw) return fallback;
      const v = JSON.parse(raw);
      return Array.isArray(v) && v.length ? v.filter((x) => ALL_METRICS.includes(x)) : fallback;
    } catch {
      return fallback;
    }
  }

  const state = {
    inited: false,
    loading: false,
    summary: null,
    data: null,
    schools: null, // null = 全选
    metrics: loadJSON('ops.metrics', DEFAULT_METRICS),
    view: localStorage.getItem('ops.view') === 'cards' ? 'cards' : 'table',
    from: '',
    to: '',
    upload: { file: null, busy: false },
  };

  function esc(value) {
    const div = document.createElement('div');
    div.textContent = String(value == null ? '' : value);
    return div.innerHTML;
  }

  function ymdToInput(ymd) {
    const s = String(ymd || '');
    return /^\d{8}$/.test(s) ? `${s.slice(0, 4)}-${s.slice(4, 6)}-${s.slice(6, 8)}` : '';
  }

  function inputToYmd(value) {
    return String(value || '').replace(/-/g, '');
  }

  function shortDate(ymd) {
    const s = String(ymd || '');
    return /^\d{8}$/.test(s) ? `${Number(s.slice(4, 6))}.${Number(s.slice(6, 8))}` : s;
  }

  function fmtValue(value, metric) {
    if (value === null || value === undefined) return '–';
    const n = Number(value);
    if (!Number.isFinite(n)) return '–';
    if (META[metric].type === 'rate') return (n * 100).toFixed(1) + '%';
    if (META[metric].type === 'money') return n.toLocaleString('zh-CN', { minimumFractionDigits: 2, maximumFractionDigits: 2 });
    return n.toLocaleString('zh-CN');
  }

  function selectedSchools() {
    if (!state.summary) return [];
    const all = state.summary.schools.map((s) => s.name);
    return state.schools === null ? all : all.filter((name) => state.schools.has(name));
  }

  async function api(url, options) {
    const res = await fetch(url, options);
    const isJson = /application\/json/.test(res.headers.get('content-type') || '');
    const body = isJson ? await res.json().catch(() => null) : null;
    return { res, body };
  }

  // ---------- 概览 / 数据 ----------

  async function loadSummary() {
    const { body } = await api('/api/ops/summary');
    state.summary = body || { enabled: false, reason: 'storage-unreachable' };
    if (state.summary.enabled && state.summary.coverage) {
      if (!state.from) state.from = state.summary.coverage.from;
      if (!state.to) state.to = state.summary.coverage.to;
    }
    return state.summary;
  }

  async function loadRows() {
    if (!state.summary || !state.summary.enabled) return;
    if (state.schools !== null && state.schools.size === 0) {
      state.data = null;
      state.loading = false;
      renderBody();
      return;
    }
    state.loading = true;
    renderBody();
    const params = new URLSearchParams();
    if (state.from) params.set('from', state.from);
    if (state.to) params.set('to', state.to);
    const schools = state.schools === null ? [] : [...state.schools];
    if (schools.length && schools.length !== (state.summary.schools || []).length) params.set('schools', schools.join(','));
    params.set('metrics', state.metrics.join(','));
    const { res, body } = await api('/api/ops/rows?' + params.toString());
    state.loading = false;
    if (!res.ok) {
      state.data = null;
      state.error = (body && (body.detail || body.error)) || `HTTP ${res.status}`;
    } else {
      state.data = body;
      state.error = null;
    }
    renderBody();
  }

  // ---------- 工具条 ----------

  function renderBar() {
    const bar = $('opsBar');
    if (!bar) return;
    const summary = state.summary;
    if (!summary || !summary.enabled || !summary.rowCount) {
      bar.innerHTML = '';
      return;
    }
    const schools = summary.schools || [];
    const chosen = state.schools === null ? new Set(schools.map((s) => s.name)) : state.schools;
    bar.innerHTML = `
      <div class="ops-bar">
        <div class="ops-bar-group">
          <span class="ops-bar-label">学校</span>
          <div class="ops-chips" id="opsSchoolChips">
            ${schools.map((s) => `<button type="button" class="ops-chip${chosen.has(s.name) ? ' on' : ''}" data-school="${esc(s.name)}">${esc(s.name)}<em>${s.shopCount}</em></button>`).join('')}
          </div>
        </div>
        <div class="ops-bar-group">
          <span class="ops-bar-label">日期</span>
          <input type="date" class="ops-input" id="opsFrom" value="${ymdToInput(state.from)}">
          <span class="ops-tilde">~</span>
          <input type="date" class="ops-input" id="opsTo" value="${ymdToInput(state.to)}">
        </div>
        <div class="ops-bar-group">
          <span class="ops-bar-label">指标</span>
          <div class="ops-chips" id="opsMetricChips">
            ${ALL_METRICS.map((k) => `<button type="button" class="ops-chip${state.metrics.includes(k) ? ' on' : ''}" data-metric="${k}">${META[k].label}</button>`).join('')}
          </div>
        </div>
      </div>`;
    renderHeaderTools();

    bar.querySelectorAll('[data-school]').forEach((btn) => {
      btn.addEventListener('click', () => {
        const name = btn.dataset.school;
        const current = state.schools === null ? new Set(schools.map((s) => s.name)) : new Set(state.schools);
        if (current.has(name)) current.delete(name); else current.add(name);
        state.schools = current.size === schools.length ? null : current;
        if (!current.size) state.schools = new Set();
        renderBar();
        loadRows();
      });
    });
    bar.querySelectorAll('[data-metric]').forEach((btn) => {
      btn.addEventListener('click', () => {
        const key = btn.dataset.metric;
        if (state.metrics.includes(key)) {
          if (state.metrics.length === 1) return; // 至少保留一个指标
          state.metrics = state.metrics.filter((k) => k !== key);
        } else {
          state.metrics = ALL_METRICS.filter((k) => key === k || state.metrics.includes(k));
        }
        localStorage.setItem('ops.metrics', JSON.stringify(state.metrics));
        renderBar();
        renderBody();
      });
    });
    $('opsFrom').addEventListener('change', (e) => { state.from = inputToYmd(e.target.value); loadRows(); });
    $('opsTo').addEventListener('change', (e) => { state.to = inputToYmd(e.target.value); loadRows(); });
  }

  function renderHeaderTools() {
    const el = $('opsHeaderTools');
    if (!el) return;
    const summary = state.summary;
    if (!summary || !summary.enabled || !summary.rowCount) {
      el.innerHTML = '';
      return;
    }
    el.innerHTML = `<div class="ops-seg" id="opsViewSeg">
        <button type="button" data-mode="table" class="${state.view === 'table' ? 'on' : ''}">报表</button>
        <button type="button" data-mode="cards" class="${state.view === 'cards' ? 'on' : ''}">卡片</button>
      </div>
      <button type="button" class="btn btn-ghost btn-small" id="opsExport">导出 CSV</button>`;
    el.querySelectorAll('#opsViewSeg [data-mode]').forEach((btn) => {
      btn.addEventListener('click', () => {
        state.view = btn.dataset.mode;
        localStorage.setItem('ops.view', state.view);
        renderHeaderTools();
        renderBody();
      });
    });
    $('opsExport').addEventListener('click', () => {
      const params = new URLSearchParams();
      if (state.from) params.set('from', state.from);
      if (state.to) params.set('to', state.to);
      if (state.schools !== null && state.schools.size) params.set('schools', [...state.schools].join(','));
      params.set('metrics', state.metrics.join(','));
      window.open('/api/ops/export?' + params.toString(), '_blank');
    });
  }

  // ---------- 内容区 ----------

  function renderBody() {
    const body = $('opsBody');
    if (!body) return;
    const summary = state.summary;
    if (!summary) {
      body.innerHTML = '<div class="empty-hint"><p>正在加载…</p></div>';
      return;
    }
    if (!summary.enabled) {
      const reasonText = {
        'storage-not-configured': '未配置存储（config.json → storage）',
        'storage-unreachable': '存储连接失败',
        'pg-not-installed': '未安装 pg 依赖',
        'sqlite-unavailable': '当前 Node 版本不支持内置 SQLite（需要 22.5+）',
      }[summary.reason] || '存储不可用';
      body.innerHTML = `
        <div class="empty-hint ops-empty">
          <p>店铺运营数据暂不可用</p>
          <small>${esc(reasonText)}${summary.detail ? '：' + esc(summary.detail) : ''}</small>
          <button type="button" class="btn btn-ghost btn-small" id="opsRetry" style="margin-top:14px">重试</button>
        </div>`;
      $('opsRetry').addEventListener('click', () => init(true));
      return;
    }
    if (!summary.rowCount) {
      body.innerHTML = `
        <div class="empty-hint ops-empty">
          <p>还没有店铺运营数据</p>
          <small>上传商家后台导出的人工统计表（.xlsx），解析后按学校 / 店铺 / 日期查看</small>
          <button type="button" class="btn btn-primary btn-small" id="opsEmptyUpload" style="margin-top:14px">上传文件</button>
        </div>`;
      $('opsEmptyUpload').addEventListener('click', openUpload);
      return;
    }
    if (state.error) {
      body.innerHTML = `<div class="empty-hint ops-empty"><p>数据加载失败</p><small>${esc(state.error)}</small>
        <button type="button" class="btn btn-ghost btn-small" id="opsReload" style="margin-top:14px">重试</button></div>`;
      $('opsReload').addEventListener('click', loadRows);
      return;
    }
    if (state.loading && !state.data) {
      body.innerHTML = '<div class="empty-hint"><p>正在加载…</p></div>';
      return;
    }
    if (state.schools !== null && state.schools.size === 0) {
      body.innerHTML = '<div class="empty-hint ops-empty"><p>请至少选择一个学校</p></div>';
      return;
    }
    if (!state.data) return;
    body.innerHTML = state.view === 'cards' ? renderCards(state.data) : renderTables(state.data);
  }

  function formatCell(shop, metric, date) {
    const series = shop.series[metric] || {};
    const value = Object.prototype.hasOwnProperty.call(series, date) ? series[date] : null;
    const quality = (shop.quality || {})[date];
    const warn = quality && quality.length
      ? `<span class="ops-warn" title="${esc('解析标记：' + quality.join('、'))}">⚠</span>`
      : '';
    return `<td class="ops-num${value == null ? ' ops-null' : ''}">${fmtValue(value, metric)}${warn}</td>`;
  }

  function subtotalRow(group, metric, dates) {
    const cells = dates.map((date) => {
      if (metric === 'click_rate') {
        let weight = 0;
        let acc = 0;
        for (const shop of group.shops) {
          const exposure = (shop.series.exposure || {})[date];
          const rate = (shop.series.click_rate || {})[date];
          if (typeof exposure === 'number' && exposure > 0 && typeof rate === 'number') {
            weight += exposure;
            acc += rate * exposure;
          }
        }
        return `<td class="ops-num ops-subtotal">${weight > 0 ? fmtValue(acc / weight, metric) : '–'}</td>`;
      }
      let sum = 0;
      let seen = false;
      for (const shop of group.shops) {
        const v = (shop.series[metric] || {})[date];
        if (typeof v === 'number') { sum += v; seen = true; }
      }
      return `<td class="ops-num ops-subtotal">${seen ? fmtValue(sum, metric) : '–'}</td>`;
    }).join('');
    return `<tr class="ops-subtotal-row"><td class="ops-shop-cell">${esc(group.school)} · 小计</td>${cells}</tr>`;
  }

  function renderTables(data) {
    const dates = data.dates || [];
    const metrics = state.metrics.filter((m) => META[m]);
    if (!metrics.length) return '<div class="empty-hint"><p>请至少选择一个指标</p></div>';
    return metrics.map((metric) => {
      const head = `<tr><th class="ops-shop-col">店铺</th>${dates.map((d) => `<th class="ops-date-col">${shortDate(d)}</th>`).join('')}</tr>`;
      const rows = data.groups.map((group) => {
        const schoolRow = `<tr class="ops-school-row"><td class="ops-shop-cell" colspan="${dates.length + 1}">${esc(group.school)}<em>${group.shops.length} 家</em></td></tr>`;
        const shopRows = group.shops.map((shop) => `<tr>
          <td class="ops-shop-cell" title="${esc(shop.shopName)}">${esc(shop.shopName)}${
            shop.status && shop.status !== '已上线' ? `<span class="badge badge-muted ops-status">${esc(shop.status)}</span>` : ''
          }</td>
          ${dates.map((d) => formatCell(shop, metric, d)).join('')}
        </tr>`).join('');
        return schoolRow + shopRows + subtotalRow(group, metric, dates);
      }).join('');
      const shopCount = data.groups.reduce((n, g) => n + g.shops.length, 0);
      return `<section class="ops-block">
        <div class="ops-block-head"><h2>${META[metric].label}</h2><span>${shopCount} 家门店 · ${dates.length} 天</span></div>
        <div class="ops-table-wrap">
          <table class="ops-table">
            <thead>${head}</thead>
            <tbody>${rows}</tbody>
          </table>
        </div>
      </section>`;
    }).join('');
  }

  function sparkline(shop, metric, dates) {
    const values = dates.map((d) => {
      const v = (shop.series[metric] || {})[d];
      return typeof v === 'number' ? v : null;
    });
    const nums = values.filter((v) => v != null);
    if (nums.length < 2) return '';
    const min = Math.min(...nums);
    const max = Math.max(...nums);
    const span = max - min || 1;
    const w = 160;
    const h = 34;
    const step = w / Math.max(values.length - 1, 1);
    const points = [];
    values.forEach((v, i) => {
      if (v == null) return;
      const x = (i * step).toFixed(1);
      const y = (h - ((v - min) / span) * (h - 6) - 3).toFixed(1);
      points.push(`${x},${y}`);
    });
    return `<svg class="ops-spark" viewBox="0 0 ${w} ${h}" preserveAspectRatio="none" aria-hidden="true"><polyline points="${points.join(' ')}" /></svg>`;
  }

  function renderCards(data) {
    const dates = data.dates || [];
    const metric = state.metrics[0];
    return `<div class="ops-cards">${data.groups.map((group) => `
      <section class="ops-card-group">
        <h3>${esc(group.school)}</h3>
        <div class="ops-card-grid">
          ${group.shops.map((shop) => `
            <article class="ops-card">
              <div class="ops-card-head">
                <span class="ops-card-name" title="${esc(shop.shopName)}">${esc(shop.shopName)}</span>
                ${shop.status && shop.status !== '已上线' ? `<span class="badge badge-muted">${esc(shop.status)}</span>` : ''}
              </div>
              <div class="ops-card-metrics">
                ${state.metrics.map((m) => `<div class="ops-card-metric"><span>${META[m].label}</span><b>${m === 'click_rate' ? fmtValue(avgRate(shop, dates), m) : fmtValue(shop.totals && shop.totals[m], m)}</b></div>`).join('')}
              </div>
              ${sparkline(shop, metric, dates)}
            </article>`).join('')}
        </div>
      </section>`).join('')}</div>`;
  }

  function avgRate(shop, dates) {
    let weight = 0;
    let acc = 0;
    for (const date of dates) {
      const exposure = (shop.series.exposure || {})[date];
      const rate = (shop.series.click_rate || {})[date];
      if (typeof exposure === 'number' && exposure > 0 && typeof rate === 'number') {
        weight += exposure;
        acc += rate * exposure;
      }
    }
    return weight > 0 ? acc / weight : null;
  }

  // ---------- 上传 ----------

  function fillSchoolOptions() {
    const select = $('opsSchool');
    if (!select) return;
    const known = (state.summary && state.summary.schools) || [];
    select.innerHTML = '<option value="">自动（读取表格里的「学校名称」列）</option>'
      + known.map((s) => `<option value="${esc(s.name)}">${esc(s.name)}</option>`).join('')
      + '<option value="__custom">手动输入…</option>';
    select.value = '';
    const custom = $('opsSchoolCustom');
    if (custom) {
      custom.value = '';
      custom.hidden = true;
    }
  }

  function selectedSchool() {
    const select = $('opsSchool');
    if (!select) return '';
    if (select.value === '__custom') return String(($('opsSchoolCustom') || {}).value || '').trim();
    return select.value;
  }

  function openUpload() {
    const modal = $('opsUploadModal');
    if (!modal) return;
    state.upload.file = null;
    $('opsFileName').textContent = '';
    $('opsUploadResult').innerHTML = '';
    $('opsYear').value = String(new Date().getFullYear());
    fillSchoolOptions();
    $('opsUploadStart').disabled = false;
    modal.hidden = false;
  }

  function closeUpload() {
    const modal = $('opsUploadModal');
    if (modal) modal.hidden = true;
  }

  function readFileBase64(file) {
    return new Promise((resolve, reject) => {
      const reader = new FileReader();
      reader.onload = () => {
        const text = String(reader.result || '');
        resolve(text.slice(text.indexOf(',') + 1));
      };
      reader.onerror = () => reject(reader.error || new Error('读取文件失败'));
      reader.readAsDataURL(file);
    });
  }

  async function doUpload(force) {
    const file = state.upload.file;
    if (!file) {
      $('opsUploadResult').innerHTML = '<span class="ops-error">请先选择 .xlsx 文件</span>';
      return;
    }
    if (!/\.xlsx$/i.test(file.name)) {
      $('opsUploadResult').innerHTML = '<span class="ops-error">只支持 .xlsx 文件</span>';
      return;
    }
    const result = $('opsUploadResult');
    const year = Number($('opsYear').value) || new Date().getFullYear();
    $('opsUploadStart').disabled = true;
    result.innerHTML = '<span class="ops-muted">正在解析并入库…</span>';
    try {
      const base64 = await readFileBase64(file);
      const { res, body } = await api('/api/ops/upload', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ fileName: file.name, contentBase64: base64, year, school, force: !!force }),
      });
      if (res.status === 409) {
        result.innerHTML = `<span class="ops-error">该文件已导入过（uploadId ${esc(body && body.uploadId)}）</span>
          <button type="button" class="btn btn-ghost btn-small" id="opsForceUpload" style="margin-left:10px">仍然导入</button>`;
        $('opsForceUpload').addEventListener('click', () => doUpload(true));
        $('opsUploadStart').disabled = false;
        return;
      }
      if (!res.ok) {
        const detail = body && (body.detail ? `${body.error}：${body.detail}` : body.error);
        result.innerHTML = `<span class="ops-error">${esc(detail || ('导入失败 HTTP ' + res.status))}</span>`;
        $('opsUploadStart').disabled = false;
        return;
      }
      const r = body.report || {};
      const warn = (body.warnings || []).slice(0, 5).map((w) => `<li>第 ${w.row} 行 ${esc(w.column)}：${esc(w.raw || '空')}（${esc(w.reason)}）</li>`).join('');
      result.innerHTML = `<div class="ops-ok">
        <b>导入完成</b>：${r.rows} 行 · ${r.shops} 家门店 · ${r.dates ? shortDate(r.dates.from) + ' ~ ' + shortDate(r.dates.to) : ''} · 覆盖 ${r.overwritten} 行 · 警告 ${r.warningCount} 条
        ${warn ? `<ul class="ops-warn-list">${warn}</ul>` : ''}
      </div>`;
      state.from = '';
      state.to = '';
      state.schools = null;
      await init(true);
    } catch (e) {
      result.innerHTML = `<span class="ops-error">${esc(e.message || e)}</span>`;
      $('opsUploadStart').disabled = false;
    }
  }

  // ---------- 导入记录 ----------

  async function openRecords() {
    const modal = $('opsRecordsModal');
    if (!modal) return;
    modal.hidden = false;
    const list = $('opsRecordsList');
    list.innerHTML = '<div class="ops-muted" style="padding:16px">加载中…</div>';
    const { res, body } = await api('/api/ops/uploads');
    if (!res.ok) {
      list.innerHTML = `<div class="ops-error" style="padding:16px">${esc((body && (body.detail || body.error)) || ('HTTP ' + res.status))}</div>`;
      return;
    }
    const uploads = (body && body.uploads) || [];
    if (!uploads.length) {
      list.innerHTML = '<div class="ops-muted" style="padding:16px">还没有导入记录</div>';
      return;
    }
    list.innerHTML = `<table class="data-table">
      <thead><tr><th>文件名</th><th>上传时间</th><th>行数</th><th>门店</th><th>警告</th><th class="col-actions">操作</th></tr></thead>
      <tbody>${uploads.map((u) => `<tr>
        <td>${esc(u.originalName)}</td>
        <td>${esc(new Date(u.uploadedAt).toLocaleString('zh-CN'))}</td>
        <td>${u.rows || 0}</td>
        <td>${u.shops || 0}</td>
        <td>${u.warningCount || 0}</td>
        <td class="col-actions">
          <a class="btn btn-ghost btn-small" href="/api/ops/uploads/${esc(u.id)}/file">下载原件</a>
          <button type="button" class="btn btn-ghost btn-small" data-reparse="${esc(u.id)}">重新解析</button>
        </td>
      </tr>`).join('')}</tbody>
    </table>`;
    list.querySelectorAll('[data-reparse]').forEach((btn) => {
      btn.addEventListener('click', async () => {
        btn.disabled = true;
        btn.textContent = '解析中…';
        const { res, body: rep } = await api(`/api/ops/uploads/${btn.dataset.reparse}/reparse`, { method: 'POST' });
        btn.disabled = false;
        btn.textContent = '重新解析';
        if (!res.ok) {
          alert((rep && (rep.detail || rep.error)) || '重新解析失败');
          return;
        }
        await init(true);
      });
    });
  }

  // ---------- 初始化 ----------

  async function init(force) {
    if (state.inited && !force) return;
    state.inited = true;
    await loadSummary();
    renderBar();
    renderHeaderTools();
    renderBody();
    if (state.summary && state.summary.enabled && state.summary.rowCount) await loadRows();
  }

  function bindOnce() {
    const uploadBtn = $('btnOpsUpload');
    if (uploadBtn) uploadBtn.addEventListener('click', openUpload);
    const recordsBtn = $('btnOpsRecords');
    if (recordsBtn) recordsBtn.addEventListener('click', openRecords);
    const start = $('opsUploadStart');
    if (start) start.addEventListener('click', () => doUpload(false));
    const cancel = $('opsUploadCancel');
    if (cancel) cancel.addEventListener('click', closeUpload);
    const closeBtn = $('opsUploadClose');
    if (closeBtn) closeBtn.addEventListener('click', closeUpload);
    const schoolSelect = $('opsSchool');
    if (schoolSelect) {
      schoolSelect.addEventListener('change', () => {
        const custom = $('opsSchoolCustom');
        if (!custom) return;
        custom.hidden = schoolSelect.value !== '__custom';
        if (!custom.hidden) custom.focus();
      });
    }
    const file = $('opsFile');
    if (file) {
      file.addEventListener('change', () => {
        state.upload.file = file.files && file.files[0] ? file.files[0] : null;
        $('opsFileName').textContent = state.upload.file ? state.upload.file.name : '';
      });
    }
    const drop = $('opsDrop');
    if (drop) {
      ['dragover', 'dragenter'].forEach((ev) => drop.addEventListener(ev, (e) => { e.preventDefault(); drop.classList.add('on'); }));
      ['dragleave', 'drop'].forEach((ev) => drop.addEventListener(ev, (e) => { e.preventDefault(); drop.classList.remove('on'); }));
      drop.addEventListener('drop', (e) => {
        const f = e.dataTransfer && e.dataTransfer.files && e.dataTransfer.files[0];
        if (!f) return;
        state.upload.file = f;
        $('opsFileName').textContent = f.name;
      });
      drop.addEventListener('click', () => { const input = $('opsFile'); if (input) input.click(); });
    }
    const recordsClose = $('opsRecordsClose');
    if (recordsClose) recordsClose.addEventListener('click', () => { $('opsRecordsModal').hidden = true; });
  }

  window.shanOpsInit = function () {
    bindOnce();
    init(false);
  };
})();