// 调试：查询 calendar_reminder 数据库中"多肉"相关的批量插入记录统计
const path = require('path');
const fs = require('fs');
const Database = require('better-sqlite3');

const DB_PATH = path.join(process.cwd(), 'data', 'calendar_reminder.db');
console.log('DB exists:', fs.existsSync(DB_PATH), DB_PATH);
if (!fs.existsSync(DB_PATH)) { process.exit(1); }

const db = new Database(DB_PATH, { readonly: true });
db.pragma('journal_mode = WAL');

console.log('\n=== 表结构 ===');
db.prepare("PRAGMA table_info(events)").all().forEach(c => {
  console.log(`  ${c.name} (${c.type})`);
});

const total = db.prepare('SELECT COUNT(1) AS c FROM events').get().c;
console.log(`\n总记录数 events: ${total}`);

const byDel = db.prepare('SELECT deleted, COUNT(1) AS c FROM events GROUP BY deleted').all();
console.log('\n按 deleted 分组:');
byDel.forEach(r => console.log(`  deleted=${r.deleted} -> ${r.c}`));

// 查询"多肉"相关（title / content 包含"多肉"）
const kw = '%多肉%';
const succuAll = db.prepare("SELECT COUNT(1) AS c FROM events WHERE title LIKE ? OR content LIKE ?").get(kw, kw).c;
console.log(`\n含「多肉」的事件（title/content）: ${succuAll}`);

if (succuAll > 0) {
  const rows = db.prepare("SELECT id, title, substr(content,1,80) AS content, start, end, remindAt, recurrence, createdAt, updatedAt, deleted, completed FROM events WHERE title LIKE ? OR content LIKE ? ORDER BY createdAt DESC LIMIT 50").all(kw, kw);
  console.log(`\n多肉记录抽样（最近 50 条）:`);
  rows.forEach(r => {
    const tag = [
      r.deleted ? '🗑删' : null,
      r.completed ? '✅完' : null,
      r.recurrence ? '🔁' + r.recurrence : null,
      r.remindAt ? '⏰' : null
    ].filter(Boolean).join('');
    console.log(`  [${r.createdAt ? r.createdAt.slice(0,16) : '?'}] ${r.id.slice(0,8)} | ${r.title || '(无题)'} ${tag} | start=${r.start ? r.start.slice(0,16) : '?'} | content=${r.content || ''}`);
  });

  // 按 title 分组统计（看批量插入的规律）
  const byTitle = db.prepare("SELECT title, COUNT(1) AS c, MIN(start) AS firstStart, MAX(start) AS lastStart FROM events WHERE title LIKE ? OR content LIKE ? GROUP BY title ORDER BY c DESC LIMIT 30").all(kw, kw);
  console.log('\n按 title 聚合（多肉相关）TOP30:');
  byTitle.forEach(r => console.log(`  x${String(r.c).padStart(4,' ')} | ${r.firstStart ? r.firstStart.slice(0,10) : ''}~${r.lastStart ? r.lastStart.slice(0,10) : ''} | ${r.title || '(空)'}`));

  // 按创建日期分组，看是否有批量插入特征
  const byDay = db.prepare(`SELECT substr(createdAt,1,10) AS d, COUNT(1) AS c, COUNT(DISTINCT title) AS titles
    FROM events WHERE title LIKE ? OR content LIKE ?
    GROUP BY substr(createdAt,1,10) ORDER BY d DESC LIMIT 30`).all(kw, kw);
  console.log('\n按 createdAt 日期聚合（多肉相关）TOP30:');
  byDay.forEach(r => console.log(`  ${r.d}  x${String(r.c).padStart(4,' ')}  distinct_titles=${r.titles}`));

  // 按 recurrence 分组
  const byRecur = db.prepare("SELECT recurrence, COUNT(1) AS c FROM events WHERE (title LIKE ? OR content LIKE ?) GROUP BY recurrence ORDER BY c DESC").all(kw, kw);
  console.log('\n按 recurrence 分组:');
  byRecur.forEach(r => console.log(`  [${r.recurrence || '(无)'}] x${r.c}`));

  // 删除 / 未删除 / 已完成比例
  const stat = db.prepare(`SELECT
    COUNT(1) AS total,
    SUM(CASE WHEN deleted=1 THEN 1 ELSE 0 END) AS del,
    SUM(CASE WHEN deleted=0 THEN 1 ELSE 0 END) AS alive,
    SUM(CASE WHEN deleted=0 AND completed=1 THEN 1 ELSE 0 END) AS aliveDone,
    SUM(CASE WHEN deleted=0 AND completed=0 THEN 1 ELSE 0 END) AS aliveTodo
    FROM events WHERE title LIKE ? OR content LIKE ?`).get(kw, kw);
  console.log('\n多肉记录状态:');
  console.log(`  总数=${stat.total}  删除=${stat.del}  存活=${stat.alive}  存活中已完成=${stat.aliveDone}  存活中待办=${stat.aliveTodo}`);
}

db.close();