import express, { query } from 'express';
import { createDatabaseConnection } from '../db/database.js'; // db 연결 파일
import { HandlePush } from './push.js';

const cmcd = "/JJ";
const db = "/JJ/db";

const app = express();
app.use(express.json());

const dbConfig = {
  host: 'ipStein.myDS.me',
  user: 'root',
  password: 'JJrootPW',
  database: 'dev',
  port: 8002
};

/*   
  // query 클래스 묶음
  let query; 
  query = await getQueryModule('update', 'Update');
  if (!query) { return res.status(400).json({ error: 'Invalid parameter' }); }
*/


const getQueryModule = async (type, className) => {
  if (type === 'create') {
    const module = await import('../../db/queries/create_query.js');
    return module[className];
  }
  else if (type === 'read') {
    const module = await import('../../db/queries/read_query.js');
    return module[className];
  }
  else if (type === 'update') {
    const module = await import('../../db/queries/update_query.js');
    return module[className];
  }
  else if (type === 'delete') {
    const module = await import('../../db/queries/update_query.js');
    return module[className];
  }
  else if (type === 'function') {
    const module = await import('../../db/queries/functions_query.js');
    return module[className];
  }
  return ''
};

app.get(`${cmcd}/push`, async (req, res) => {
  // HandlePush(req, res);
  //3138117983JJ20240611
  // const { cid, title, body, cd } = req.query;
  const { cid, title, body, badge, parameter } = req.query;

  
  if (!cid || !title || !body) {
    return res.status(400).json({ error: 'All parameters (cid, title, body) are required' });
  }

  let query; 
  query = await getQueryModule('function', 'Push');
  if (!query) { return res.status(400).json({ error: 'Invalid parameter' }); }

  try {
    const connection = await createDatabaseConnection({ ...dbConfig, database: 'jjungtable_db'});
    const [rows] = await connection.query(query.loadFCM_token, [cid]);
    await connection.end();

    if (rows.length === 0) {
      return res.status(404).json({ error: 'No fcm_token found for the provided cid' });
    }

    const fcmToken = rows[0].fcm_token;
    console.log(fcmToken);
    // HandlePush 호출 시 필요한 req.body에 fcmToken, title, body 설정
    req.body = { fcmToken, title, body, badge, parameter };
    HandlePush(req, res);

  } catch (err) {
    console.error(err);
    res.status(500).json({ error: 'Internal server error' });
  }
});


// DB 연결 테스트
app.get(`${db}/test`, async (req, res) => {
  try {
    const connection = await createDatabaseConnection(dbConfig);
    const [rows] = await connection.query('SELECT 1 + 1 AS solution');
    await connection.end();
    res.json({ result: rows[0].solution });
  } catch (err) {
    res.status(500).json({ error: err.message });
  }
});


///////////////////////////////////////////////////////////////
// GET
///////////////////////////////////////////////////////////////
app.get(`${db}/version/read`, async (req, res) => {
  const { os_type } = req.query;
  if (!os_type) { return res.status(400).json({ error: 'ostype parameter is required' }) }

  let query; 
  query = await getQueryModule('read', 'Read');
  if (!query) { return res.status(400).json({ error: 'Invalid parameter' }); }

  try {
    const connection = await createDatabaseConnection({ ...dbConfig, database: 'jjungtable_db' });
    const [rows] = await connection.query(query.version, [os_type]); 
    await connection.end();

    if (rows.length === 0) {
      return res.status(404).json({ error: 'No data found' });
    }

    res.json(rows);
  } catch (err) {
    console.error(err);
    res.status(500).json({ error: 'Internal server error' });
  }
});

app.get(`${db}/userInfo/read`, async (req, res) => {
  const { id, type } = req.query;
  if (!id || !type) { return res.status(400).json({ error: 'ostype parameter is required' }) }

  let query; 
  query = await getQueryModule('read', 'Read');
  if (!query) { return res.status(400).json({ error: 'Invalid parameter' }); }

  try {
    const connection = await createDatabaseConnection({ ...dbConfig, database: 'jjungtable_db' });
    const [rows] = await connection.query(query.login_code, [id, type]); 
    await connection.end();

    if (rows.length === 0) {
      return res.status(404).json({ error: 'No data found' });
    }

    res.json(rows);
  } catch (err) {
    console.error(err);
    res.status(500).json({ error: 'Internal server error' });
  }
});

///////////////////////////////////////////////////////////////
// POST
///////////////////////////////////////////////////////////////

async function insertLog(table, connection, query, body) {
  if (table === 'version') { 
    const { date, managerId, os_type, final_ver, force_ver, update_ver, update_choice, log } = body;
    await connection.query( query, [date, managerId, os_type, final_ver, force_ver, update_ver, update_choice, log] );
  }
}
app.post(`${db}/version/update`, async (req, res) => {
  const { date, managerId, os_type, final_ver, force_ver, update_ver, update_choice, log } = req.body;
  try {
    const connection = await createDatabaseConnection({ ...dbConfig});
    let query; 

    // 버전 정보 업데이트
    query = await getQueryModule('update', 'Update');
    if (!query) { return res.status(400).json({ error: 'Invalid parameter' }); }
    await connection.query( query.version,[final_ver, force_ver, update_ver, update_choice, os_type]);
    
    // 로그 생성
    query = await getQueryModule('create', 'Log');
    if (!query) { return res.status(400).json({ error: 'Invalid parameter' }); }
    await insertLog('version', connection, query.version_Log, req.body);

    await connection.end();
    res.json({ message: 'Update successful' });

  } catch (err) {
    res.status(500).json({ error: err.message });
  }
});




///////////////////////////////////////////////////////////////
// LOG 관련

// DB Log 읽어들이기
app.get(`${db}/log/read`, async (req, res) => {
  console.log('[JJ]Log: Version');
  const { param } = req.query;

  try {
    const connection = await createDatabaseConnection({ ...dbConfig });
    let query, rows;
    // let rows;
    
    if (param === 'version') { 
      query = await getQueryModule('read', 'Log');
      if (!query) { return res.status(400).json({ error: 'Invalid parameter' }); }
      [rows] = await connection.query(query.version_Log);
    }

    await connection.end();
    res.json(rows);
  } catch (err) {
    console.error(err);
    res.status(500).json({ error: 'Internal server error' });
  }
});













export default app;