-first commit

@template/src/app.js

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+import express from 'express'
+import cors from 'cors'
+import dotenv from 'dotenv'
+import router from './routes/route.js'
+import { validateJsonFormat } from './middlewares/validate.js'
+
+dotenv.config()
+
+const app = express()
+app.use(cors())
+
+// ✅ ตรวจจับ JSON format error ก่อน parser
+app.use(express.json({ limit: '10mb' }))
+app.use(validateJsonFormat)
+
+app.use('/api', router)
+// middleware จัดการ error กลาง
+app.use((err, req, res, next) => {
+  if (err instanceof OftenError) {
+    res.status(err.statusCode).json({
+      type: err.type,
+      messageTh: err.messageTh,
+      messageEn: err.messageEn
+    });
+  } else {
+    res.status(500).json({ message: "Unexpected error" });
+  }
+});
+
+app.listen(process.env.PORT, () => {
+  console.log(`✅ ${process.env.PJ_NAME} running on port ${process.env.PORT}`)
+})

@template/src/config/db.js

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+import pkg from 'pg'
+import dotenv from 'dotenv'
+
+dotenv.config()
+const { Pool } = pkg
+
+export const connection = new Pool({
+  host: process.env.PG_HOST,
+  user: process.env.PG_USER,
+  password: process.env.PG_PASS,
+  database: process.env.PG_DB,
+  port: process.env.PG_PORT,
+})

@template/src/controllers/userController.js

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+import { userService } from '../services/userservice.js'
+import { trim_all_array } from '../utils/trim.js'
+import { sendResponse } from '../utils/response.js'
+
+export function userController() {
+
+  async function onNavigate(req, res) {
+    const database = req.body.organization
+    if (!database) throw new Error('Missing organization')
+
+    const prommis = await onUserController(req, res, database)
+    return prommis
+  }
+
+  async function onUserController(req, res, database) {
+    let idx = -1
+    let result
+    const { usrnam, usreml } = req.body
+
+    try {
+      result = await userService.createUser(database, usrnam, usreml)
+    } 
+    catch (err) {
+      idx = 1
+    } 
+    finally {
+      if (idx === 1) {
+        return sendResponse(res, 400, 'เกิดข้อผิดพลาดไม่คาดคิดเกิดขึ้น', 'Unexpected error')
+      }
+
+      trim_all_array(result)
+      const array_diy = {
+        result,
+        count: result.length,
+        timestamp: new Date().toISOString(),
+      }
+
+      return array_diy
+    }
+  }
+
+  return { onNavigate }
+}

@template/src/middlewares/validate.js

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+import { sendResponse } from '../utils/response.js'
+
+/**
+ * ✅ Middleware สำหรับตรวจสอบความถูกต้องของ JSON body
+ * ป้องกัน body-parser crash (SyntaxError)
+ */
+export function validateJsonFormat(err, req, res, next) {
+  if (err instanceof SyntaxError && 'body' in err) {
+    console.error('[Invalid JSON Format]', err.message)
+    return sendResponse(res, 400, 'รูปแบบ บอร์ดี้ ไม่ถูกต้อง', 'Invalid Body format')
+  }
+  next()
+}
+
+// /**
+//  * ✅ ตรวจสอบ body/query/params ว่ามีค่า organization หรือไม่
+//  */
+// export function validateRequest(req, res, next) {
+//   const { organization } = req.body || {}
+//   if (!organization) {
+//     return sendResponse(res, 400, 'ไม่พบค่า organization', 'Missing organization')
+//   }
+//   next()
+// }

@template/src/routes/route.js

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+import express from 'express'
+const router = express.Router()
+
+
+
+// import { userController } from '../controllers/userController.js'
+
+///////////////////////////////////////////////////////////////////////////
+// const controller_user_post = userController()
+
+///////////////////////////////////////////////////////////////////////////
+// router.post('/user', async (req, res) => { const data = await controller_user_post.onNavigate(req, res); if (data) return sendResponse(res, 200, null, null, data)})
+
+export default router

@template/src/services/userservice.js

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+import { executeQueryParam } from '../share/generalservice.js'
+
+export const userService = {
+  async createUser(database, usrnam, usreml) {
+    const sql = `
+      SELECT * FROM ${database}.usrmst
+      WHERE usrnam = $1 OR usreml = $2
+    `
+    const params = [usrnam, usreml]
+    const result = await executeQueryParam(sql, database, params)
+    return result
+  },
+}

@template/src/share/generalservice.js

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+import { connection } from '../config/db.js'
+import dotenv from 'dotenv'
+dotenv.config()
+
+// ===================================================
+// 🧩 Internal DevHint System
+// ===================================================
+function devhint(level, location, message, extra = null) {
+  const isEnabled = process.env.DEVHINT === 'true'
+  const currentLevel = parseInt(process.env.DEVHINT_LEVEL || '1', 10)
+
+  if (!isEnabled || level > currentLevel) return
+
+  const timestamp = new Date().toISOString()
+  const prefix = `🧩 [DEVHINT:${location}]`
+  const formatted = `${prefix} → ${message} (${timestamp})`
+  if (extra) console.log(formatted, '\n', extra)
+  else console.log(formatted)
+}
+
+
+
+// ===================================================
+// ✅ executeQueryConditions()
+// ===================================================
+export async function executeQueryConditions(database, baseQuery, conditions = {}) {
+  devhint(2, 'generalservice.js', 'executeQueryConditions() start')
+
+  let whereClauses = []
+  let params = []
+  let idx = 1
+
+  for (const [key, value] of Object.entries(conditions)) {
+    if (value === undefined || value === null || value === '') continue
+
+    const match = String(value).match(/^(ILIKE|LIKE)\s+(.+)$/i)
+    if (match) {
+      const operator = match[1].toUpperCase()
+      const pattern = match[2].trim()
+      whereClauses.push(`${key} ${operator} $${idx}`)
+      params.push(pattern)
+    } else {
+      whereClauses.push(`${key} = $${idx}`)
+      params.push(value)
+    }
+    idx++
+  }
+
+  let finalQuery = baseQuery
+  if (whereClauses.length > 0) {
+    finalQuery += ' AND ' + whereClauses.join(' AND ')
+  }
+
+  const formattedSQL = finalQuery.replace(/\${database}/g, database)
+
+  // 🧩 แสดงเฉพาะเมื่อ DEVHINT_LEVEL >= 2
+  devhint(2, 'executeQueryConditions', `📤 Executing Query`, {
+    database,
+    sql: formattedSQL,
+    params
+  })
+
+  const result = await connection.query(formattedSQL, params)
+
+  devhint(2, 'executeQueryConditions', `✅ Query Success (${result.rowCount} rows)`)
+  return result.rows
+}
+
+// ===================================================
+// ✅ executeQueryParam()
+// ===================================================
+export async function executeQueryParam(database, sql, params = []) {
+  const formattedSQL = sql.replace(/\${database}/g, database)
+
+  devhint(2, 'executeQueryParam', `📤 Executing Query`, {
+    database,
+    sql: formattedSQL,
+    params
+  })
+
+  const result = await connection.query(formattedSQL, params)
+
+  devhint(2, 'executeQueryParam', `✅ Query Success (${result.rowCount} rows)`)
+  return result.rows
+}
+
+
+
+// ===================================================
+// Export สำหรับ controller หรืออื่นๆ เรียกใช้ได้ด้วย
+// ===================================================
+export { devhint }
+
+
+
+
+// /**
+//  * ✅ executeQueryParam (ของเดิม)
+//  * ใช้กับ SQL + database schema + params
+//  */
+// export async function executeQueryParam(sql, database, params = []) {
+//   try {
+//     if (!database) throw new Error('Database is not defined')
+
+//     const formattedSQL = sql.replace(/\${database}/g, database)
+//     console.log(`[DB:${database}] → ${formattedSQL}`)
+//     const result = await connection.query(formattedSQL, params)
+//     return result.rows
+//   } catch (err) {
+//     console.error('[executeQueryParam Error]', err.message)
+//     throw err
+//   }
+// }
+
+/**
+ * ✅ executeQueryConditions (ใหม่)
+ * ใช้สร้าง WHERE อัตโนมัติจาก object เงื่อนไข
+ * ตัวที่ไม่มีค่า (null, undefined, '') จะไม่ถูกนำมาสร้างใน WHERE
+ */
+// export async function executeQueryConditions(database, baseQuery, conditions = {}) {
+//   try {
+//     if (!database) throw new Error('Database is not defined')
+
+//     let whereClauses = []
+//     let params = []
+//     let idx = 1
+
+//     for (const [key, value] of Object.entries(conditions)) {
+//       if (value === undefined || value === null || value === '') continue
+
+//       // ✅ ตรวจว่า value มีคำว่า LIKE หรือ ILIKE ไหม
+//       const match = String(value).match(/^(ILIKE|LIKE)\s+(.+)$/i)
+//       if (match) {
+//         const operator = match[1].toUpperCase()
+//         const pattern = match[2].trim()
+//         whereClauses.push(`${key} ${operator} $${idx}`)
+//         params.push(pattern)
+//       } else {
+//         whereClauses.push(`${key} = $${idx}`)
+//         params.push(value)
+//       }
+
+//       idx++
+//     }
+
+//     let finalQuery = baseQuery
+//     if (whereClauses.length > 0) {
+//       finalQuery += ' AND ' + whereClauses.join(' AND ')
+//     }
+
+//     const formattedSQL = finalQuery.replace(/\${database}/g, database)
+//     console.log(`[DB:${database}] → ${formattedSQL}`)
+
+//     const result = await connection.query(formattedSQL, params)
+//     return result.rows
+//   } catch (err) {
+//     console.error('[executeQueryConditions Error]', err.message)
+//     throw err
+//   }
+// }
+
+
+// /**
+//  * 🧩 devhint — Debug tracer ที่เปิดปิดได้จาก .env
+//  * @param {string} fileName - ชื่อไฟล์หรือโมดูล (เช่น 'usercontroller.js')
+//  * @param {string} message - ข้อความหรือจุดใน flow (เช่น 'onNavigate')
+//  * @param {object|string} [extra] - ข้อมูลเพิ่มเติม (optional)
+//  */
+// export function devhint(fileName, message, extra = null) {
+//   if (process.env.DEVHINT === 'true') {
+//     const timestamp = new Date().toISOString()
+//     const prefix = `🧩 [DEVHINT:${fileName}]`
+//     const formatted = `${prefix} → ${message} (${timestamp})`
+//     if (extra) console.log(formatted, '\n', extra)
+//     else console.log(formatted)
+//   }
+// }
+
+

@template/src/utils/errorList.js

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+// utils/errorList.js
+
+export function manualError(key) {
+  switch (key) {
+    case "invalid_input":
+      return {
+        code: 400,
+        messageTh: "ข้อมูลที่ส่งมาไม่ถูกต้อง",
+        messageEn: "Invalid input data"
+      };
+
+    case "not_found":
+      return {
+        code: 404,
+        messageTh: "ไม่พบข้อมูลที่ร้องขอ",
+        messageEn: "Resource not found"
+      };
+
+    case "unauthorized":
+      return {
+        code: 401,
+        messageTh: "คุณไม่มีสิทธิ์เข้าถึงข้อมูลนี้",
+        messageEn: "Unauthorized access"
+      };
+
+    case "server_error":
+      return {
+        code: 500,
+        messageTh: "เกิดข้อผิดพลาดภายในระบบ",
+        messageEn: "Internal server error"
+      };
+
+    default:
+      return {
+        code: 500,
+        messageTh: "ข้อผิดพลาดที่ไม่ทราบสาเหตุ",
+        messageEn: "Unknown error occurred"
+      };
+  }
+}

@template/src/utils/oftenError.js

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+// utils/oftenError.js
+import { manualError } from "./errorList.js";
+
+export class OftenError extends Error {
+  /**
+   * ใช้ได้ 2 แบบ:
+   * 1. throw new OftenError("not_found")
+   * 2. throw new OftenError(400, "ไทย", "English")
+   */
+  constructor(arg1, arg2, arg3) {
+    // แบบ lookup จาก key
+    if (typeof arg1 === "string" && !arg2 && !arg3) {
+      const found = manualError(arg1);
+      super(found.messageEn);
+      this.statusCode = found.code;
+      this.messageTh = found.messageTh;
+      this.messageEn = found.messageEn;
+      this.key = arg1;
+    }
+
+    // แบบ manual
+    else if (typeof arg1 === "number" && arg2 && arg3) {
+      super(arg3);
+      this.statusCode = arg1;
+      this.messageTh = arg2;
+      this.messageEn = arg3;
+      this.key = "manual";
+    }
+
+    // fallback
+    else {
+      super("Invalid error format");
+      this.statusCode = 500;
+      this.messageTh = "รูปแบบการสร้าง error ไม่ถูกต้อง";
+      this.messageEn = "Invalid error constructor format";
+      this.key = "invalid_format";
+    }
+
+    this.name = "OftenError";
+  }
+}

@template/src/utils/response.js

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+/**
+ * sendResponse
+ * ----------------------------------------------
+ * ส่ง response แบบมาตรฐาน รองรับข้อความ 2 ภาษา
+ * ----------------------------------------------
+ * @param {object} res - Express response object
+ * @param {number} status - HTTP Status code (200, 400, 500, etc.)
+ * @param {string} msg_th - ข้อความภาษาไทย
+ * @param {string} msg_en - ข้อความภาษาอังกฤษ
+ * @param {any} [data=null] - optional data
+ */
+export function sendResponse(res, status = 200, msg_th = null, msg_en = null, data = null) {
+  const isError = status >= 400
+
+  // ✅ ถ้าไม่ใช่ error และไม่มีข้อความ → ใช้ข้อความ default
+  const message_th = msg_th || (isError ? 'เกิดข้อผิดพลาด' : 'สำเร็จ')
+  const message_en = msg_en || (isError ? 'Error occurred' : 'Succeed')
+
+  const response = {
+    status: isError ? 'error' : 'succeed',
+    message: {
+      th: message_th,
+      en: message_en
+    },
+    data
+  }
+
+  res.status(status).json(response)
+}

@template/src/utils/trim.js

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+export function trim_all_array(data) {
+  if (!Array.isArray(data)) return data
+  for (let row of data) {
+    for (let key in row) {
+      if (typeof row[key] === 'string') {
+        row[key] = row[key].trim()
+      }
+    }
+  }
+  return data
+}