feat: Web 版上线 footpr.linyux.cn —— 登录页 + 按用户隔离的命令 API + 静态托管

app/server/db.mjs

@@ -11,33 +11,6 @@ export const DATA_DIR = process.env.DATA_DIR || path.join(__dirname, '..', '.dat
 export const ATT_DIR = path.join(DATA_DIR, 'attachments');
 export const DB_PATH = path.join(DATA_DIR, 'footprints.db');
 
-let db = null;
-
-export function getDb() {
-  if (db) return db;
-  fs.mkdirSync(ATT_DIR, { recursive: true });
-  db = new DatabaseSync(DB_PATH);
-  db.exec('PRAGMA foreign_keys = ON;');
-  // 先补列（老库无 uuid/hlc 等列时，schema 中的索引会引用失败），再执行 schema，最后回填
-  preMigrateColumns(db);
-  db.exec(fs.readFileSync(path.join(__dirname, '..', 'schema.sql'), 'utf8'));
-  migrateSync(db);
-  ensureBuiltin(db);
-  return db;
-}
-
-export function buildSearchText(title, description, result, tags, extras) {
-  const extraFlat = Object.entries(extras || {}).map(([k, v]) => {
-    if (v == null) return '';
-    if (typeof v === 'object') return Object.values(v).filter(Boolean).join(' ');
-    return String(v);
-  }).filter(Boolean);
-  return [title, description || '', result || '', (tags || []).join(' '), ...extraFlat]
-    .filter(Boolean).join('\n');
-}
-
-// ---------- 同步基础设施 ----------
-
 function getMeta(d, key) {
   const r = d.prepare('SELECT value FROM sync_state WHERE key=?').get(key);
   return r ? r.value : null;
@@ -98,6 +71,15 @@ function getUuid(d, table, id) {
   return r ? r.uuid : null;
 }
 
+export function buildSearchText(title, description, result, tags, extras) {
+  const extraFlat = Object.entries(extras || {}).map(([k, v]) => {
+    if (v == null) return '';
+    if (typeof v === 'object') return Object.values(v).filter(Boolean).join(' ');
+    return String(v);
+  }).filter(Boolean);
+  return [title, description || '', result || '', (tags || []).join(' '), ...extraFlat]
+    .filter(Boolean).join('\n');
+}
 // 老库迁移：补列 + 回填 uuid/hlc/origin（幂等）
 const SYNC_TABLES = ['footprint', 'footprint_type', 'taxonomy', 'dimension', 'attachment',
   'semester', 'course_grade', 'metric_def', 'saved_view', 'grade_band'];
@@ -250,6 +232,31 @@ function ensureBuiltin(db) {
 }
 
 // ---------- 查询构建 ----------
+
+function openDb(dbPath) {
+  fs.mkdirSync(path.join(path.dirname(dbPath), 'attachments'), { recursive: true });
+  const d = new DatabaseSync(dbPath);
+  d.exec('PRAGMA foreign_keys = ON;');
+  // 先补列（老库无 uuid/hlc 等列时，schema 中的索引会引用失败），再执行 schema，最后回填
+  preMigrateColumns(d);
+  d.exec(fs.readFileSync(path.join(__dirname, '..', 'schema.sql'), 'utf8'));
+  migrateSync(d);
+  ensureBuiltin(d);
+  return d;
+}
+
+// 按数据库路径创建一套应用命令（多用户/服务器模式：每个用户一个独立档案库）
+export function createAppCommands(dbPath) {
+  const db = openDb(dbPath);
+  const DATA_DIR = path.dirname(dbPath); // 工厂内遮蔽顶层默认值：附件按用户目录
+  function getDb() {
+    return db;
+  }
+
+
+// ---------- 同步基础设施 ----------
+
+
 const SORTS = {
   date_desc: "COALESCE(NULLIF(fp.start_date,''), substr(fp.created_at,1,10)) DESC, fp.id DESC",
   date_asc: "COALESCE(NULLIF(fp.start_date,''), substr(fp.created_at,1,10)) ASC, fp.id ASC",
@@ -337,8 +344,7 @@ function mapRow(r) {
   };
 }
 
-function listFootprints(query) {
-  const d = getDb();
+function listFootprints(d, query) {
   const page = Math.max(1, query.page || 1);
   const pageSize = Math.min(2000, Math.max(1, query.page_size || 20));
   const { joins, conds, params } = buildWhere(query);
@@ -359,7 +365,7 @@ function listFootprints(query) {
 }
 
 // ---------- 命令处理 ----------
-export function handleCommand(cmd, payload) {
+  function handleCommand(cmd, payload) {
   const d = getDb();
 
   switch (cmd) {
@@ -496,7 +502,7 @@ export function handleCommand(cmd, payload) {
     }
 
     case 'footprint_list':
-      return listFootprints(payload.query || {});
+      return listFootprints(d, payload.query || {});
 
     case 'footprint_get': {
       const row = d.prepare(BASE_SELECT + ' AND fp.id=?').get(payload.id);
@@ -563,7 +569,7 @@ export function handleCommand(cmd, payload) {
     }
 
     case 'timeline': {
-      const res = listFootprints({ ...(payload.query || {}), page_size: 2000, sort: 'date_desc' });
+      const res = listFootprints(d, { ...(payload.query || {}), page_size: 2000, sort: 'date_desc' });
       const groups = [];
       const byYear = new Map();
       for (const row of res.items) {
@@ -908,3 +914,22 @@ export function handleCommand(cmd, payload) {
       throw new Error('未知命令：' + cmd);
   }
 }
+
+// 工厂闭合
+  return { handleCommand, getDb };
+}
+
+// ---------- 默认单例（开发桥接 / seed 兼容） ----------
+let defaultCommands = null;
+function getDefault() {
+  if (!defaultCommands) defaultCommands = createAppCommands(DB_PATH);
+  return defaultCommands;
+}
+
+export function getDb() {
+  return getDefault().getDb();
+}
+
+export function handleCommand(cmd, payload) {
+  return getDefault().handleCommand(cmd, payload);
+}