feat : calcDistance 구현

+
+const e = require('express');
+const levenshtein = require('js-levenshtein');
+const db = require('../model/db');
+const {calcDistance} = require('../service/calcDistance');
+const {getProfanity} = require('../service/query');
+const {standardize, removeSpecial} = require('../service/standardization');
+
+
+exports.calcDistance = async (req, res, next) => {
+    const { word } = req.body;
+  
+    const profanityList = await getProfanity();
+  
+    let specialRemoved = removeSpecial(word);
+    let specialNotRemoved = word;
+    
+    specialRemoved = standardize(specialRemoved);
+    specialNotRemoved = standardize(specialNotRemoved);
+
+    const rareResult = calcDistance(word, profanityList);
+    const specialRemovedResult = calcDistance(specialRemoved, profanityList);
+    const specialNotRemovedResult = calcDistance(specialNotRemoved, profanityList);
+
+    const minResult = Math.min(rareResult, specialRemovedResult, specialNotRemovedResult);
+
+    if (minResult <= 1){
+        res.status(200).json({success : true, isProfanity : "YES"});
+    }else{
+        res.status(200).json({success : true, isProfanity : "NO"});
+    }
+  };
\ No newline at end of file

@@ -2,16 +2,15 @@ const mysql = require('mysql2/promise');
 const dotenv = require('dotenv');
 const path = require('path');
 
-dotenv.config({path:path.join(__dirname, "../.env")});
+dotenv.config({ path: path.join(__dirname, '../.env') });
 
-const db = mysql
-  .createPool({
-    host: process.env.DB_HOST,
-    user: process.env.DB_USER,
-    port: process.env.DB_PORT,
-    password: process.env.DB_PASSWORD,
-    database: process.env.DB_DATABASE,
-    connectionLimit: 10,
-  });
+const db = mysql.createPool({
+  host: process.env.DB_HOST,
+  user: process.env.DB_USER,
+  port: process.env.DB_PORT,
+  password: process.env.DB_PASSWORD,
+  database: process.env.DB_DATABASE,
+  connectionLimit: 10,
+});
 
 module.exports = db;

@@ -2,9 +2,9 @@ const express = require('express');
 
 const router = express.Router();
 
+const { calcDistance } = require('../controller/calcDistance');
+
 /* GET home page. */
-router.post('/checkProfanity', (req, res) => {
-  res.send('hello');
-});
+router.post('/checkProfanity', calcDistance);
 
 module.exports = router;

+/* eslint-disable no-restricted-syntax */
 const levenshtein = require('js-levenshtein');
+const Hangul = require('hangul-js');
 
-const calcDistance = () => {
-  const result = levenshtein('개새끼', 'ㄱHsㅐㄲ!');
-  console.log(result);
-};
+exports.calcDistance = (word, profanityList) => {
+  let leastLevenshtein = 1000;
+
+  for (const profanity of profanityList[0]) {
+    let compareWord = Hangul.disassemble(profanity.content);
+    compareWord = compareWord.join('');
+    if (leastLevenshtein > levenshtein(word, compareWord)) {
+      leastLevenshtein = levenshtein(word, compareWord);
+    }
+  }
 
-calcDistance();
+  return leastLevenshtein;
+};

+const db = require('../model/db');
+
+exports.getProfanity = async () => {
+  const selectResult = await db.query("SELECT DISTINCT content from profanity");
+
+  return selectResult;
+};

 /* eslint-disable no-use-before-define */
 /* eslint-disable no-restricted-syntax */
+const { config } = require('dotenv');
 const Hangul = require('hangul-js');
 
 const standardize = (word) => {
@@ -12,7 +13,7 @@ const standardize = (word) => {
         ? standardizeConsonent(letter)
         : standardizeVowel(letter);
     } else {
-      const preLetter = index === 1 ? '' : disassembledWord[index - 1];
+      const preLetter = index === 0 ? '' : disassembledWord[index - 1];
       const nextLetter = index === disassembledWord.length - 1 ? '' : disassembledWord[index + 1];
       newLetter = isVowelSpecial(preLetter, letter, nextLetter)
         ? standardizeSpecialVowel(letter)
@@ -120,18 +121,44 @@ const standardizeSpecialConsonent = (letter) => {
 };
 
 const standardizeSpecialVowel = (letter) => {
+  let result = '';
+
   switch (letter) {
     case ('a', 'A'):
-      return 'ㅏ';
+      result = 'ㅏ';
+      break;
     case ('u', 'U'):
-      return 'ㅓ';
+      result = 'ㅓ';
+      break;
     case ('@', 'H'):
-      return 'ㅐ';
-    case ('l', '1', 'i', 'I', '!'):
-      return 'ㅣ';
+      result = 'ㅐ';
+      break;
+    case ('l', 'i', 'I', '!', 1):
+      result = 'ㅣ';
+      break;
+    case '1':
+      result = 'ㅣ';
+      break;
     default:
-      return letter;
+      result = letter;
+      break;
   }
+
+  return result;
+};
+
+const removeSpecial = (word) => {
+  const numCheck = /[0-9]/g; // 숫자
+
+  const engCheck = /[a-zA-Z]/g; // 문자
+
+  const specialCheck = /[~!@#$%^&*()_+|<>?:{}]/g; // 특수문자
+
+  let result = word.replace(numCheck, '');
+  result = result.replace(engCheck, '');
+  result = result.replace(specialCheck, '');
+
+  return result;
 };
 
-module.exports = { standardize };
+module.exports = { standardize, removeSpecial };