const fmtCN = n => n.toLocaleString('zh-CN', { minimumFractionDigits: 2, maximumFractionDigits: 2 })
const parseAmount = s => { const x = String(s || '').replace(/[,\s]/g, ''); const v = Number(x); if (!Number.isFinite(v)) return null; return Math.round(v * 100) }
const centsToText = c => fmtCN((c || 0) / 100)
const logBox = () => document.getElementById('fd-output')
const logLocal = msg => { const b = logBox(); if (!b) return; const line = `${(window.fmtCNDateTime ? fmtCNDateTime(new Date()) : new Date().toLocaleString('zh-CN'))} ${msg}`; b.textContent = (b.textContent || '') + (b.textContent ? '\n' : '') + line; b.scrollTop = b.scrollHeight }

let editingId = null
const attachmentCache = new Map()

const getEl = id => document.getElementById(id)
const clearFileInput = () => { const fi = getEl('new-attachments'); if (fi) fi.value = '' }

const loadFlags = async () => {
  try {
    const r = await fetch('/api/flags')
    const d = await r.json()
  if (d && d.debug && d.debug.ccb_private_funds) {
      const sec = getEl('funds-debug')
      if (sec) sec.style.display = ''
    }
  } catch {}
}

const getAttachments = async flowId => {
  if (attachmentCache.has(flowId)) return attachmentCache.get(flowId)
  const r = await fetch(`/api/ccb_private_funds/attachments/${flowId}`)
  const d = await r.json()
  const rows = (d && d.ok && Array.isArray(d.rows)) ? d.rows : []
  attachmentCache.set(flowId, rows)
  return rows
}

const invalidateAttachments = flowId => {
  attachmentCache.delete(flowId)
}

const uploadFiles = async (flowId, files) => {
  if (!files || files.length === 0) return []
  const result = []
  for (const f of files) {
    const buf = await f.arrayBuffer()
    const r = await fetch(`/api/ccb_private_funds/attachments/upload?flow_id=${encodeURIComponent(flowId)}&filename=${encodeURIComponent(f.name)}&mime=${encodeURIComponent(f.type || 'application/octet-stream')}`, {
      method: 'POST',
      headers: { 'Content-Type': 'application/octet-stream' },
      body: buf
    })
    const d = await r.json()
    if (!d || !d.ok) throw new Error(d && d.error ? d.error : 'upload_failed')
    result.push(d)
  }
  invalidateAttachments(flowId)
  return result
}

const renderAttachmentCell = async (flowId, td) => {
  td.className = 'attachments-cell expandable'
  td.innerHTML = ''
  const content = document.createElement('div')
  content.className = 'expandable-content'
  content.textContent = '加载中...'
  td.appendChild(content)
  const toggle = document.createElement('span')
  toggle.className = 'expandable-toggle'
  toggle.textContent = '👇展开'
  toggle.addEventListener('click', () => {
    const expanded = td.classList.toggle('expanded')
    toggle.textContent = expanded ? '👆收缩' : '👇展开'
  })
  td.appendChild(toggle)
  try {
    const atts = await getAttachments(flowId)
    if (!atts.length) {
      content.innerHTML = '<span class="att-none">无</span>'
      toggle.style.display = 'none'
      return
    }
    content.innerHTML = ''
    const c = document.createElement('span')
    c.className = 'att-count'
    c.textContent = `${atts.length} 个`
    content.appendChild(c)
    const wrap = document.createElement('div')
    wrap.className = 'att-links'
    for (const a of atts) {
      const link = document.createElement('a')
      link.href = a.url
      link.target = '_blank'
      link.rel = 'noopener noreferrer'
      link.textContent = a.filename
      wrap.appendChild(link)
    }
    content.appendChild(wrap)
    toggle.style.display = atts.length <= 2 ? 'none' : ''
  } catch {
    content.innerHTML = '<span class="att-none">加载失败</span>'
    toggle.style.display = 'none'
  }
}

const renderEditAttachments = async flowId => {
  const editor = getEl('attachments-editor')
  const box = getEl('existing-attachments')
  if (!editor || !box) return
  if (!flowId) {
    editor.style.display = 'none'
    box.innerHTML = ''
    return
  }
  editor.style.display = ''
  box.innerHTML = '加载中...'
  try {
    const rows = await getAttachments(flowId)
    if (!rows.length) {
      box.innerHTML = '<div class="empty-attachments">暂无附件</div>'
      return
    }
    box.innerHTML = ''
    rows.forEach(a => {
      const item = document.createElement('div')
      item.className = 'attachment-item'
      const left = document.createElement('a')
      left.href = a.url
      left.target = '_blank'
      left.rel = 'noopener noreferrer'
      left.textContent = `${a.filename} (${fmtCN((a.size_bytes || 0) / 1024)} KB)`
      const del = document.createElement('button')
      del.className = 'btn btn-danger'
      del.textContent = '删除附件'
      del.addEventListener('click', async () => {
        const ok = window.confirm('确认删除此附件？')
        if (!ok) return
        const r = await fetch(`/api/ccb_private_funds/attachments/${a.id}`, { method: 'DELETE' })
        const d = await r.json()
        if (!d || !d.ok) {
          alert('附件删除失败')
          return
        }
        invalidateAttachments(flowId)
        await renderEditAttachments(flowId)
        await loadFlows()
      })
      item.appendChild(left)
      item.appendChild(del)
      box.appendChild(item)
    })
  } catch {
    box.innerHTML = '<div class="empty-attachments">加载失败</div>'
  }
}

const enterEditMode = async row => {
  editingId = row.id
  getEl('new-date').value = row.date
  getEl('new-type').value = row.type
  getEl('new-amount').value = (row.amount_cents / 100).toFixed(2)
  getEl('new-bank').value = row.bank_status || ''
  getEl('new-remark').value = row.remark || ''
  const btnAdd = getEl('btn-add')
  const btnCancel = getEl('btn-cancel-edit')
  if (btnAdd) btnAdd.textContent = '保存修改'
  if (btnCancel) btnCancel.style.display = ''
  clearFileInput()
  await renderEditAttachments(editingId)
  document.querySelector('.add-bar').scrollIntoView({ behavior: 'smooth' })
}

const exitEditMode = () => {
  editingId = null
  const btnAdd = getEl('btn-add')
  const btnCancel = getEl('btn-cancel-edit')
  if (btnAdd) btnAdd.textContent = '新增'
  if (btnCancel) btnCancel.style.display = 'none'
  clearFileInput()
  renderEditAttachments(0)
}

const renderRows = rows => {
  const tb = getEl('flows-body')
  if (!tb) return
  tb.innerHTML = ''
  let sumIn = 0
  let sumOut = 0
  rows.forEach(r => {
    const tr = document.createElement('tr')
    tr.className = r.type === 'in' ? 'in' : 'out'
    const tdDate = document.createElement('td'); tdDate.textContent = r.date
    const tdType = document.createElement('td'); tdType.textContent = r.type === 'in' ? '汇入' : '汇出'
    const tdAmt = document.createElement('td'); tdAmt.className = 'amount'; tdAmt.textContent = centsToText(r.amount_cents)
    const tdBank = document.createElement('td'); tdBank.textContent = r.bank_status || ''
    const tdEnd = document.createElement('td'); tdEnd.className = 'ending'; tdEnd.textContent = centsToText(r.ending_cents)
    const tdRemark = document.createElement('td'); tdRemark.textContent = r.remark || ''
    const tdAtt = document.createElement('td'); tdAtt.className = 'attachments-cell'
    const tdOps = document.createElement('td')

    const btnEdit = document.createElement('button')
    btnEdit.className = 'btn btn-light'
    btnEdit.textContent = '修改'
    btnEdit.style.marginRight = '6px'
    btnEdit.addEventListener('click', async () => { await enterEditMode(r) })
    tdOps.appendChild(btnEdit)

    const btnDel = document.createElement('button')
    btnDel.className = 'btn btn-danger'
    btnDel.textContent = '删除'
    btnDel.addEventListener('click', async () => {
      const ok = window.confirm('确认删除该条流水及其全部附件？')
      if (!ok) return
      try { await fetch('/api/debug/event', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ source: 'ccb_private_funds', action: 'delete', id: r.id }) }) } catch {}
      const resp = await fetch(`/api/ccb_private_funds/flows/${r.id}`, { method: 'DELETE' })
      const data = await resp.json()
      if (!data || !data.ok) {
        alert('删除失败')
        return
      }
      invalidateAttachments(r.id)
      if (editingId === r.id) exitEditMode()
      await loadFlows()
    })
    tdOps.appendChild(btnDel)

    tr.appendChild(tdDate)
    tr.appendChild(tdType)
    tr.appendChild(tdAmt)
    tr.appendChild(tdBank)
    tr.appendChild(tdEnd)
    tr.appendChild(tdRemark)
    tr.appendChild(tdAtt)
    tr.appendChild(tdOps)
    tb.appendChild(tr)
    renderAttachmentCell(r.id, tdAtt)
    if (r.type === 'in') sumIn += r.amount_cents
    else sumOut += r.amount_cents
  })
  const st = getEl('stats')
  if (st) st.textContent = `总汇入 ${centsToText(sumIn)} · 总汇出 ${centsToText(Math.abs(sumOut))} · 区间净变动 ${centsToText(sumIn + sumOut)} · 期末余额 ${rows.length ? centsToText(rows[rows.length - 1].ending_cents) : centsToText(0)}`
}

const loadFlows = async () => {
  const st = getEl('funds-status')
  const btnQ = getEl('btn-load')
  if (st) { st.style.display = ''; st.textContent = '正在查询...' }
  if (btnQ) btnQ.disabled = true
  const start = getEl('date-start').value || ''
  const end = getEl('date-end').value || ''
  const type = getEl('type-filter').value || 'all'
  const kw = getEl('kw').value || ''
  try {
    const r = await fetch(`/api/ccb_private_funds/flows?start=${encodeURIComponent(start)}&end=${encodeURIComponent(end)}&type=${encodeURIComponent(type)}&kw=${encodeURIComponent(kw)}`)
    const d = await r.json()
    if (d.ok) renderRows(d.rows || [])
    if (st) { st.style.display = ''; st.textContent = `查询完成（${(d.rows || []).length} 条）` }
  } catch (e) {
    if (st) { st.style.display = ''; st.textContent = `查询失败：${String(e.message || e)}` }
  } finally {
    if (btnQ) btnQ.disabled = false
    setTimeout(() => { if (st) st.style.display = 'none' }, 1200)
  }
}

const saveFlow = async () => {
  const st = getEl('funds-status')
  const btn = getEl('btn-add')
  if (st) { st.style.display = ''; st.textContent = editingId ? '正在保存修改...' : '正在新增...' }
  if (btn) btn.disabled = true

  const date = getEl('new-date').value
  const type = getEl('new-type').value
  const amtText = getEl('new-amount').value
  const bank = getEl('new-bank').value
  const remark = getEl('new-remark').value
  const files = Array.from((getEl('new-attachments').files || []))
  if (!date || !type || !amtText || !bank || !remark) {
    if (st) st.textContent = '请完整填写日期、类型、金额、银行方/状态、备注'
    if (btn) btn.disabled = false
    setTimeout(() => { if (st) st.style.display = 'none' }, 1800)
    return
  }

  const cents = parseAmount(amtText)
  if (cents === null) {
    if (st) st.textContent = '金额格式错误'
    if (btn) btn.disabled = false
    setTimeout(() => { if (st) st.style.display = 'none' }, 1800)
    return
  }

  const body = { date, type, amount_cents: type === 'out' ? -Math.abs(cents) : Math.abs(cents), bank_status: bank, remark }

  try {
    if (editingId) {
      const r = await fetch(`/api/ccb_private_funds/flows/${editingId}`, { method: 'PUT', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify(body) })
      const d = await r.json()
      if (!d || !d.ok) throw new Error((d && d.error) || 'update_failed')
      if (files.length) await uploadFiles(editingId, files)
      invalidateAttachments(editingId)
      await renderEditAttachments(editingId)
      if (st) st.textContent = '修改成功'
      logLocal(`ccb_private_funds.update id=${editingId}`)
    } else {
      const dupRes = await fetch(`/api/ccb_private_funds/flows?start=${encodeURIComponent(date)}&end=${encodeURIComponent(date)}&type=all`)
      const dupData = await dupRes.json()
      if (dupData.ok && Array.isArray(dupData.rows) && dupData.rows.length > 0) {
        const ok = window.confirm(`该日期已有 ${dupData.rows.length} 条记录，是否继续新增？`)
        if (!ok) {
          if (btn) btn.disabled = false
          if (st) st.style.display = 'none'
          return
        }
      }
      const r = await fetch('/api/ccb_private_funds/flows', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify(body) })
      const d = await r.json()
      if (!d || !d.ok || !d.id) throw new Error((d && d.error) || 'create_failed')
      if (files.length) await uploadFiles(d.id, files)
      invalidateAttachments(d.id)
      if (st) st.textContent = '新增成功'
      logLocal(`ccb_private_funds.add id=${d.id}`)
    }
    clearFileInput()
    await loadFlows()
  } catch (e) {
    if (st) st.textContent = `${editingId ? '修改' : '新增'}失败：${String(e.message || e)}`
  } finally {
    if (btn) btn.disabled = false
    setTimeout(() => { if (st) st.style.display = 'none' }, 1400)
  }
}

const openSettings = async () => {
  const st = getEl('funds-status')
  try {
    if (st) { st.style.display = ''; st.textContent = '正在读取设置...' }
    const r = await fetch('/api/ccb_private_funds/config')
    const d = await r.json()
    if (!d || !d.ok || !d.config) throw new Error((d && d.error) || 'load_config_failed')
    const cfg = d.config || {}
    const currentBase = String(cfg.weekly_api_base || '')
    const currentKey = String(cfg.weekly_key || '93220')
    const currentSync = cfg.weekly_sync_enabled !== false ? 'on' : 'off'

    const nextBaseRaw = window.prompt('周报同步地址 weekly_api_base', currentBase)
    if (nextBaseRaw === null) {
      if (st) st.textContent = '已取消设置'
      setTimeout(() => { if (st) st.style.display = 'none' }, 1200)
      return
    }
    const nextKeyRaw = window.prompt('周报同步密钥 weekly_key', currentKey)
    if (nextKeyRaw === null) {
      if (st) st.textContent = '已取消设置'
      setTimeout(() => { if (st) st.style.display = 'none' }, 1200)
      return
    }
    const nextSyncRaw = window.prompt('是否开启周报同步（on/off）', currentSync)
    if (nextSyncRaw === null) {
      if (st) st.textContent = '已取消设置'
      setTimeout(() => { if (st) st.style.display = 'none' }, 1200)
      return
    }

    const syncText = String(nextSyncRaw || '').trim().toLowerCase()
    const weekly_sync_enabled = !(syncText === 'off' || syncText === '0' || syncText === 'false' || syncText === 'no')
    const payload = {
      weekly_api_base: String(nextBaseRaw || '').trim(),
      weekly_key: String(nextKeyRaw || '').trim(),
      weekly_sync_enabled
    }
    const wr = await fetch('/api/ccb_private_funds/config', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify(payload)
    })
    const wd = await wr.json()
    if (!wd || !wd.ok) throw new Error((wd && wd.error) || 'save_config_failed')
    if (st) st.textContent = '设置已保存'
    logLocal('ccb_private_funds.config.saved')
  } catch (e) {
    if (st) st.textContent = `设置失败：${String(e.message || e)}`
  } finally {
    setTimeout(() => { if (st) st.style.display = 'none' }, 1500)
  }
}

let pageInited = false
const initPage = () => {
  if (pageInited) return
  pageInited = true
  loadFlags()
  const y = new Date().getFullYear()
  const d = new Date(y, 11, 31)
  const endOfYear = window.cnDateStr ? cnDateStr(d) : `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, '0')}-${String(d.getDate()).padStart(2, '0')}`
  const ds = getEl('date-start'); if (ds) ds.value = '2024-01-01'
  const de = getEl('date-end'); if (de) de.value = endOfYear
  const nd = getEl('new-date'); if (nd) nd.value = window.cnDateStr ? cnDateStr(new Date()) : nd.value
  const bl = getEl('btn-load'); if (bl) bl.addEventListener('click', loadFlows)
  const ba = getEl('btn-add'); if (ba) ba.addEventListener('click', saveFlow)
  const bc = getEl('btn-cancel-edit'); if (bc) bc.addEventListener('click', exitEditMode)
  const be = getEl('btn-export'); if (be) be.addEventListener('click', async () => { const start = getEl('date-start').value || ''; const end = getEl('date-end').value || ''; location.href = `/api/ccb_private_funds/export.csv?start=${encodeURIComponent(start)}&end=${encodeURIComponent(end)}` })
  const bs = getEl('btn-settings'); if (bs) bs.addEventListener('click', openSettings)
  const bcp = getEl('fd-btn-copy'); if (bcp) bcp.addEventListener('click', async () => { try { await navigator.clipboard.writeText((logBox() && logBox().textContent) || '') } catch {} })
  const brf = getEl('fd-btn-refresh'); if (brf) brf.addEventListener('click', async () => { try { const r = await fetch('/api/debug/logs?limit=5000&channel=ccb_private_funds'); const d2 = await r.json(); if (d2.ok) { const b = logBox(); if (b) { b.textContent = (d2.lines || []).join('\n'); b.scrollTop = b.scrollHeight } } } catch {} })
  const bcl = getEl('fd-btn-clear'); if (bcl) bcl.addEventListener('click', async () => { try { await fetch('/api/debug/clear?channel=ccb_private_funds', { method: 'POST' }) } catch {}; const b = logBox(); if (b) b.textContent = '' })
  loadFlows()
}

if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', initPage)
else initPage()