From fc4a4e81d4ddb5a4e9af3ec33f8d88f51ff5ce60 Mon Sep 17 00:00:00 2001
From: Sisyphus <sisyphus@direv.local>
Date: Wed, 22 Jul 2026 11:41:49 +0800
Subject: [PATCH] =?UTF-8?q?fix(=E4=B8=AD=E7=94=B5=E5=BB=BA):=20=E8=B7=A8?=
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bug 复现: state 文件按日期存放, 跨天首次运行 sinceDate=今天,
漏掉前一天 8:00 CST 之后才发布的公告 (用户实例: 2409490555 中电建水电十四局橡胶电缆, 7/21 22:45 发布).

修复: 新增 BACKFILL_DAYS=3 配置, state 为空时 sinceDate = today - 3 天,
新增'跨天补抓'日志分支.

验证: 删 state 后重跑拉到 80 条 / 28 条招采公告, 全部下载成功.
本地 + 生产 scp 同步部署, 4 个关键词全流程测试通过.
---
 scripts/tender-fetcher/fetch-v1.2.js | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/scripts/tender-fetcher/fetch-v1.2.js b/scripts/tender-fetcher/fetch-v1.2.js
index 2c272e4..9189cf0 100755
--- a/scripts/tender-fetcher/fetch-v1.2.js
+++ b/scripts/tender-fetcher/fetch-v1.2.js
@@ -36,6 +36,8 @@ const TYPES = ['招采公告'];
 // 可选：留空则从上次抓取日期继续；有值则从指定日期开始
 const START_DATE = '';
 const END_DATE = new Date().toISOString().split('T')[0];  // 今天
+// 跨天首次运行(state 为空)时回溯 N 天, 避免错过前一天后半天发布的公告
+const BACKFILL_DAYS = 3;
 const OUTPUT_DIR = path.join(process.env.HOME, 'desktop/招标公告', END_DATE);
 const PDF_DIR = path.join(OUTPUT_DIR, 'pdf');     // PDF 附件
 const HTML_DIR = path.join(OUTPUT_DIR, 'html');    // HTML 转换（待安装转换技能）
@@ -346,12 +348,17 @@ async function main() {
 
   log(`========== 开始抓取: ${KEYWORD} ==========`);
 
-  // 确定起始日期（差量：上次运行日期 或 配置的 START_DATE）
-  const sinceDate = START_DATE || (state.lastRun ? state.lastRun.split('T')[0] : null) || END_DATE;
+  // 确定起始日期（差量：上次运行日期 或 配置的 START_DATE；跨天首次运行回溯 N 天）
+  const sinceDate = START_DATE || (state.lastRun ? state.lastRun.split('T')[0] : null) || (() => {
+    const d = new Date(Date.now() - BACKFILL_DAYS * 86400 * 1000);
+    return d.toISOString().split('T')[0];
+  })();
   if (START_DATE) {
     log(`指定日期范围: ${START_DATE} ~ ${END_DATE}`);
   } else if (state.lastRun) {
     log(`差量模式: 自 ${state.lastRun.substring(0, 10)} 以来新增`);
+  } else if (sinceDate !== END_DATE) {
+    log(`跨天补抓: ${sinceDate} ~ ${END_DATE}`);
   } else {
     log(`首次运行: ${sinceDate} ~ ${END_DATE}`);
   }