Step4-2 mission : TUNA & SNOW (#104)

* create todosList.json

* create todos.js

* create app.js for program runnung

* Rix the name of function

rename getCommandArrayByRegexp to getCmdList

* excuteCommand 함수 수정 :  argument 개수 판별 추가

인자 개수로 1개 초과  나올 경우 즉시 종료 후 프로그램 다시 실행

* isValidCommand 함수 변경 : obeject argument 추가

외부 변수에 접근하지 않고 객체를 인자로 받을 수 있도록 변경

* idGenerator 함수 변경 : 상수가 아닌 인자로 random number 생성

상수 99999 제거 후, max 값과 min 값으로 random 넘버 생성

* fix the Equal operator to strcit Equal operator

Author: dev-dongwon

app.js

@@ -0,0 +1,68 @@
+const todos = require('./todos.js');
+
+const readline = require('readline').createInterface({
+    input: process.stdin,
+    output: process.stdout
+});
+
+const getCmdList = (command) => {
+    const regexpForSeperateCommand = /[^\$]+/g;
+    return command.match(regexpForSeperateCommand);
+};
+
+const executeCommand = (commandArr) => {
+
+    if (arguments.length != 1) return;
+
+    if (commandArr.length == 2) {
+        todos[commandArr[0]](commandArr[1]);
+    } else if (commandArr.length == 3) {
+        todos[commandArr[0]](commandArr[1], commandArr[2]);
+    }
+};
+
+const isValidCommand = (command, obj) => {
+    let result = false;
+    if (Object.keys(obj).includes(command)) result = true;
+    return result;
+}
+
+const delay = (time) => {
+    return new Promise(function(resolve, reject){
+        setTimeout(resolve, time);
+    });
+}
+
+const runProgram = (readline) => {
+
+    readline.setPrompt('명령하세요: ');
+    readline.prompt();
+    readline.on('line', (userInput) => {
+        
+        try {
+            const commandArr = getCmdList(userInput);
+            const primaryCommand = commandArr[0];
+
+            if (!isValidCommand(primaryCommand, todos)) {
+                console.log("올바르지 않은 명령어입니다")
+                readline.prompt();
+            }
+
+            delay(0)
+            .then(() => {executeCommand(commandArr); return delay(0)})
+            .then(() => {if (primaryCommand != 'show') return delay(2000)})
+            .then(() => {if (primaryCommand == 'update') return delay(2500)})
+            .then(() => {readline.prompt(); return delay(0)})
+
+        } catch (error) {
+            console.log("명령어를 다시 입력해주세요")
+            readline.prompt();
+        }
+
+    }).on('close', () => {
+        console.log("프로그램을 종료합니다.");
+        process.exit();
+    });
+}
+
+runProgram(readline);

todos.js

@@ -0,0 +1,88 @@
+//todos.js
+const originData = require('./todosList.json');
+const convertedData = JSON.parse(JSON.stringify(originData)).data;
+const idGenerator = (max, min) => Math.floor(Math.random() * (max - min)) + 1;
+
+const getArrByCondition = (arr, condition) => {
+    return arr.reduce((acc, val) => {
+        if (condition(val)) acc.push(val);
+        return acc;
+    }, []);
+};
+
+const showStatusLazy = () => {
+    setTimeout(() => {
+        showData('all');
+    }, 1000);
+}
+
+const isDuplicated = (val, key, convertedData) => {
+    let result = false;
+    convertedData.forEach((element) => {
+        if (val === element[key]) result = true;
+    })
+    return result;
+}
+
+const showData = (type) => {
+    if (type === 'all') {
+        const numOfTodos = getArrByCondition(convertedData, (val) => {return val.status === "todo"}).length;
+        const numOfDoings = getArrByCondition(convertedData, (val) => {return val.status === "doing"}).length;
+        const numOfDones = getArrByCondition(convertedData, (val) => {return val.status === "done"}).length;
+
+        console.log(`현재상태 : todo: ${numOfTodos}개, doing: ${numOfDoings}개, done: ${numOfDones}개`);
+
+    } else {
+        const objArr = getArrByCondition(convertedData, (val) => {return (type === val.status)});
+        let result = `${type} 리스트 : 총${objArr.length}건 :`;
+        getArrByCondition(objArr, (val) => {result += `, '${val.name}, ${val.id}번'`; return true});
+        console.log(`${result}`);
+    }
+}
+
+const addData = (name, tags) => {
+    const id = idGenerator(99999, 1);
+
+    if (isDuplicated(id, "id", convertedData)) {
+        return addData(name, tags);
+    }
+
+    let obj = {
+        name, 
+        tags, 
+        status: 'todo', 
+        id,
+    };
+
+    convertedData.push(obj);
+    console.log(`${obj.name} 1개가 추가됐습니다.(id : ${obj.id})`);
+    showStatusLazy();
+}
+
+const deleteData = (id)=> { 
+    const target = getArrByCondition(convertedData, (val) => {return val.id === id})[0];
+    if (!target) {console.log('일치하는 id가 없습니다'); return;}
+
+    convertedData.splice(convertedData.indexOf(target), 1);
+    console.log(`${target.name} ${target.status}가 목록에서 삭제됐습니다.`);
+    showStatusLazy();
+};
+
+const updateData = (id, status)=> {
+    const target = getArrByCondition(convertedData, (val) => {return val.id === id})[0];
+    if (!target) {console.log('일치하는 id가 없습니다'); return;}
+
+    target.status = status;
+
+    setTimeout(() => {
+        console.log(`${target.name}가 ${status}로 상태가 변경되었습니다`);
+        showStatusLazy();
+    }, 3000);
+}
+
+module.exports = {
+    "show" : showData,
+	"add" : addData,
+	"update" : updateData,
+	"delete" : deleteData,
+};

todosList.json

@@ -0,0 +1,41 @@
+{
+    "result" : true,
+    "data": [
+        {
+            "name" : "자바스크립트 공부하기", 
+            "tags" : ["programming", "javascript"],
+            "status" : "todo",
+            "id" : 12123123
+        },
+        {
+            "name" : "그림 그리기", 
+            "tags" : ["picture", "favorite"],
+            "status" : "doing",
+            "id" : 123
+        },
+        {
+            "name" : "파이썬 공부하기", 
+            "tags" : ["programming", "javascript"],
+            "status" : "done",
+            "id" : 213232
+        },
+        {
+            "name" : "자바 공부하기", 
+            "tags" : ["programming", "java"],
+            "status" : "todo",
+            "id" : 123345
+        },
+        {
+            "name" : "음악 듣기", 
+            "tags" : ["music", "favorite"],
+            "status" : "doing",
+            "id" : 12123
+        },
+        {
+            "name" : "정규식 공부하기", 
+            "tags" : ["programming", "RegExp"],
+            "status" : "done",
+            "id" : 1234
+        }   
+    ]
+}