feat: NCT集训报名系统 - 陈村校区 + 北滘校区（数据独立）

2026-06-11 18:32:13 +08:00
commit 03a3645dff
13 changed files with 4468 additions and 0 deletions
--- a/db.js
+++ b/db.js
@@ -0,0 +1,112 @@
+const initSqlJs = require('sql.js');
+const fs = require('fs');
+const path = require('path');
+
+const ADMIN_PASSWORD = 'admin123'; // 管理员密码，可自行修改
+
+// 工厂函数：为每个校区创建独立的数据库实例
+function createCampusDB(campusName) {
+  const dbDir = path.join(__dirname, 'data');
+  const dbPath = path.join(dbDir, campusName + '.db');
+  let db = null;
+
+  async function init() {
+    const SQL = await initSqlJs();
+
+    if (!fs.existsSync(dbDir)) {
+      fs.mkdirSync(dbDir, { recursive: true });
+    }
+
+    if (fs.existsSync(dbPath)) {
+      const buffer = fs.readFileSync(dbPath);
+      db = new SQL.Database(buffer);
+    } else {
+      db = new SQL.Database();
+    }
+
+    db.run(`
+      CREATE TABLE IF NOT EXISTS registrations (
+        id        INTEGER PRIMARY KEY AUTOINCREMENT,
+        name      TEXT NOT NULL,
+        period    TEXT NOT NULL,
+        teacher   TEXT NOT NULL,
+        createdAt TEXT DEFAULT (datetime('now', 'localtime'))
+      )
+    `);
+
+    save();
+    console.log('[db] ' + campusName + ' 数据库初始化完成');
+  }
+
+  function save() {
+    const data = db.export();
+    const buffer = Buffer.from(data);
+    fs.writeFileSync(dbPath, buffer);
+  }
+
+  function insertRegistration(name, period, teacher) {
+    db.run(
+      'INSERT INTO registrations (name, period, teacher) VALUES (?, ?, ?)',
+      [name, period, teacher]
+    );
+    save();
+  }
+
+  function getAllRegistrations() {
+    const result = db.exec('SELECT * FROM registrations ORDER BY id DESC');
+    if (result.length === 0) return [];
+    const columns = result[0].columns;
+    return result[0].values.map(row => {
+      const obj = {};
+      columns.forEach((col, i) => { obj[col] = row[i]; });
+      return obj;
+    });
+  }
+
+  function deleteRegistration(id) {
+    db.run('DELETE FROM registrations WHERE id = ?', [id]);
+    save();
+  }
+
+  function getStats() {
+    const total = db.exec('SELECT COUNT(*) as count FROM registrations');
+    const totalCount = total.length > 0 ? total[0].values[0][0] : 0;
+
+    const byPeriod = db.exec(
+      'SELECT period, COUNT(*) as count FROM registrations GROUP BY period'
+    );
+    const periodStats = {};
+    if (byPeriod.length > 0) {
+      byPeriod[0].values.forEach(row => {
+        periodStats[row[0]] = row[1];
+      });
+    }
+
+    const byTeacher = db.exec(
+      'SELECT teacher, COUNT(*) as count FROM registrations GROUP BY teacher'
+    );
+    const teacherStats = {};
+    if (byTeacher.length > 0) {
+      byTeacher[0].values.forEach(row => {
+        teacherStats[row[0]] = row[1];
+      });
+    }
+
+    return { total: totalCount, byPeriod: periodStats, byTeacher: teacherStats };
+  }
+
+  function verifyPassword(password) {
+    return password === ADMIN_PASSWORD;
+  }
+
+  return {
+    init,
+    insertRegistration,
+    getAllRegistrations,
+    deleteRegistration,
+    getStats,
+    verifyPassword
+  };
+}
+
+module.exports = { createCampusDB };