// purchase.js — 采购管理模块

function renderPurchase() {
  const records = state.data.purchase || [];
  const money = (v) => `¥ ${(Number(v || 0)).toLocaleString("zh-CN", { minimumFractionDigits: 0, maximumFractionDigits: 2 })}`;
  const badge = (s) => {
    const m = { "已审批": "green", "已采购": "blue", "已完成": "slate", "待审批": "amber" };
    const c = m[s] || "amber";
    return `<span class="text-xs px-2 py-0.5 rounded-full bg-${c}-100 text-${c}-700 font-medium">${s}</span>`;
  };
  const esc = (s) => (s || "").replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;").replace(/"/g, "&quot;");

  const totalAmount = records.reduce((s, r) => s + (r.amount || 0), 0);

  document.querySelector("#purchase").innerHTML = `<div class="grid gap-4">
    <div class="grid grid-cols-3 gap-3">
      <div class="metric-card"><span class="flex items-center gap-2 text-xs text-slate-500">采购记录</span><strong class="mt-2 block text-2xl">${records.length}</strong></div>
      <div class="metric-card"><span class="flex items-center gap-2 text-xs text-slate-500">采购金额</span><strong class="mt-2 block text-2xl">${money(totalAmount)}</strong></div>
      <div class="metric-card"><span class="flex items-center gap-2 text-xs text-slate-500">待审批</span><strong class="mt-2 block text-2xl">${records.filter(r => r.status === '待审批').length}</strong></div>
    </div>
    <div class="flex justify-between items-center">
      <h3 class="font-bold text-slate-700">采购列表 <span class="text-slate-400 font-normal">(${records.length})</span></h3>
      <button class="btn btn-primary btn-sm" onclick="openPurchaseModal()">新增采购</button>
    </div>
    <div id="purchaseModal" class="hidden fixed inset-0 z-50 flex items-center justify-center bg-black/40" onclick="closePurchaseModal()"><div class="bg-white rounded-2xl shadow-2xl w-full max-w-lg mx-4" onclick="event.stopPropagation()"><div class="sticky top-0 z-10 bg-white/95 backdrop-blur border-b border-slate-100 px-6 py-4 flex items-center justify-between"><h3 class="text-lg font-bold text-slate-800" id="purchaseModalTitle">新增采购</h3><button class="btn btn-ghost btn-sm rounded-full w-8 h-8 p-0" onclick="closePurchaseModal()"><i data-lucide="x"></i></button></div><form onsubmit="savePurchase(event)" class="p-6 grid gap-4" novalidate><input type="hidden" name="purchase_id" id="purchase-id-input" value=""><div class="grid grid-cols-2 gap-3"><label class="block"><span class="text-xs text-slate-500 mb-1 block">项目名称 <span class="text-red-500">*</span></span><input name="project_name" required class="form-ctrl" placeholder="请输入项目名称"></label><label class="block"><span class="text-xs text-slate-500 mb-1 block">采购内容 <span class="text-red-500">*</span></span><input name="purchase_item" required class="form-ctrl" placeholder="请输入采购内容"></label></div><div class="grid grid-cols-2 gap-3"><label class="block"><span class="text-xs text-slate-500 mb-1 block">供应商</span><input name="supplier" class="form-ctrl" placeholder="请输入供应商"></label><label class="block"><span class="text-xs text-slate-500 mb-1 block">金额（元）</span><input name="amount" type="number" step="0.01" class="form-ctrl" placeholder="0.00"></label></div><div class="grid grid-cols-2 gap-3"><label class="block"><span class="text-xs text-slate-500 mb-1 block">采购日期</span><input name="purchase_date" type="date" class="form-ctrl"></label><label class="block"><span class="text-xs text-slate-500 mb-1 block">状态</span><select name="status" class="form-ctrl bg-white"><option>待审批</option><option>已审批</option><option>已采购</option><option>已完成</option></select></label></div><div class="grid grid-cols-2 gap-3"><label class="block"><span class="text-xs text-slate-500 mb-1 block">分类</span><input name="category" class="form-ctrl" placeholder="如：办公用品、设备等"></label></div><div class="grid"><label class="block"><span class="text-xs text-slate-500 mb-1 block">备注</span><textarea name="notes" class="form-ctrl" rows="2" placeholder="备注信息"></textarea></label></div><div class="flex justify-end gap-2 pt-2 border-t border-slate-100"><button class="btn btn-ghost btn-sm text-red-600 hidden" id="purchaseDeleteBtn" onclick="deletePurchaseItem()" type="button">删除</button><button class="btn btn-ghost btn-sm" onclick="closePurchaseModal()" type="button">取消</button><button class="btn btn-primary btn-sm" type="submit">保存</button></div></form></div></div>
    <div class="overflow-x-auto card p-4"><table class="w-full text-sm"><thead><tr class="bg-slate-50 border-b border-slate-200"><th class="p-2 text-left font-semibold">项目名称</th><th class="p-2 text-left font-semibold">采购内容</th><th class="p-2 text-left font-semibold">供应商</th><th class="p-2 text-right font-semibold">金额</th><th class="p-2 text-center font-semibold">采购日期</th><th class="p-2 text-center font-semibold">状态</th><th class="p-2 text-left font-semibold">分类</th><th class="p-2 text-left font-semibold">备注</th></tr></thead><tbody>${records.length ? records.map(r => `<tr class="border-b border-slate-100 hover:bg-slate-50 cursor-pointer" onclick="openPurchaseEdit(${r.id})"><td class="p-2 font-medium">${esc(r.project_name)}</td><td class="p-2">${esc(r.purchase_item)}</td><td class="p-2">${esc(r.supplier)}</td><td class="p-2 text-right font-medium">${money(r.amount)}</td><td class="p-2 text-center text-xs">${r.purchase_date || '—'}</td><td class="p-2 text-center">${badge(r.status)}</td><td class="p-2">${esc(r.category)}</td><td class="p-2 text-xs text-slate-500">${esc(r.notes) || '—'}</td></tr>`).join("") : '<tr><td colspan="8" class="p-6 text-center text-slate-400">暂无采购记录</td></tr>'}<tr class="border-t-2 border-slate-200 bg-slate-50 font-bold"><td class="p-2" colspan="3">合计（${records.length} 条）</td><td class="p-2 text-right">${money(totalAmount)}</td><td class="p-2" colspan="4"></td></tr></tbody></table></div>
  </div>`;
  if (window.lucide) window.lucide.createIcons();
}

window.openPurchaseModal = () => {
  const form = document.querySelector("#purchaseModal form");
  form.reset();
  form.querySelector('[name="purchase_id"]').value = "";
  document.querySelector("#purchaseModalTitle").textContent = "新增采购";
  document.querySelector("#purchaseDeleteBtn").classList.add("hidden");
  document.querySelector("#purchaseModal").classList.remove("hidden");
};

window.closePurchaseModal = () => {
  document.querySelector("#purchaseModal").classList.add("hidden");
};

window.openPurchaseEdit = (id) => {
  const r = (state.data.purchase || []).find(x => x.id === id);
  if (!r) return;
  const form = document.querySelector("#purchaseModal form");
  form.reset();
  const setVal = (name, val) => { const el = form.querySelector(`[name="${name}"]`); if (el) el.value = val || ""; };
  setVal("purchase_id", r.id);
  setVal("project_name", r.project_name);
  setVal("purchase_item", r.purchase_item);
  setVal("supplier", r.supplier);
  setVal("amount", r.amount);
  setVal("purchase_date", r.purchase_date);
  setVal("status", r.status);
  setVal("category", r.category);
  setVal("notes", r.notes);
  document.querySelector("#purchaseModalTitle").textContent = "编辑采购";
  document.querySelector("#purchaseDeleteBtn").classList.remove("hidden");
  document.querySelector("#purchaseModal").classList.remove("hidden");
};

window.savePurchase = async (event) => {
  event.preventDefault();
  const form = event.target;
  const data = Object.fromEntries(new FormData(form).entries());
  const isEdit = !!data.purchase_id;
  delete data.purchase_id;

  const url = isEdit
    ? `/api/purchase/${form.querySelector('[name="purchase_id"]').value}`
    : "/api/purchase";
  const method = isEdit ? "PUT" : "POST";

  const resp = await fetch(url, { method, headers: { "Content-Type": "application/json" }, body: JSON.stringify({ data: { ...data, tenant: state.tenant } }) });
  if (!resp.ok) { alert("保存失败"); return; }

  // Refresh data
  const bResp = await fetch(`/api/bootstrap?tenant=${encodeURIComponent(state.tenant)}`);
  if (bResp.ok) {
    const bd = await bResp.json();
    state.data = bd;
    applyUserTenants();
    renderPurchase();
  }
  closePurchaseModal();
};

window.deletePurchaseItem = async () => {
  const id = document.querySelector("#purchaseModal form [name='purchase_id']").value;
  if (!id || !confirm("确定删除？")) return;
  const resp = await fetch(`/api/purchase/${id}`, { method: "DELETE" });
  if (!resp.ok) { alert("删除失败"); return; }
  const bResp = await fetch(`/api/bootstrap?tenant=${encodeURIComponent(state.tenant)}`);
  if (bResp.ok) {
    const bd = await bResp.json();
    state.data = bd;
    applyUserTenants();
    renderPurchase();
  }
  closePurchaseModal();
};