initial commit

2023-10-25 10:05:46 +03:00
commit 6bdfd08c10
6 changed files with 986 additions and 0 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1 @@
+node_modules
--- a/app.js
+++ b/app.js
@@ -0,0 +1,128 @@
+const express = require("express");
+const bodyParser = require("body-parser");
+const fs = require("fs");
+const { join } = require("path");
+
+const app = express();
+const jsonParser = bodyParser.json();
+
+// app.use(express.static(__dirname + 'public'));
+// получение списка данных
+
+// app.use("/index", express.static(join(__dirname + "public")))
+app.get("/", function (req, res) {
+  res.sendFile(join(__dirname, "index.html"));
+});
+
+app.get("/api/users", function (req, res) {
+  var content = fs.readFileSync("users.json", "utf8");
+  var users = JSON.parse(content);
+  res.send(users);
+});
+
+// получение одного пользователя по id
+app.get("/api/users/:id", function (req, res) {
+  var id = req.params.id; // получаем id
+  var content = fs.readFileSync("users.json", "utf8");
+  var users = JSON.parse(content);
+  var user = null;
+  // находим в массиве пользователя по id
+  for (var i = 0; i < users.length; i++) {
+    if (users[i].id == id) {
+      user = users[i];
+      break;
+    }
+  }
+  // отправляем пользователя
+  if (user) {
+    res.send(user);
+  } else {
+    res.status(404).send();
+  }
+});
+
+// получение отправленных данных
+app.post("/api/users", jsonParser, function (req, res) {
+  if (!req.body) return res.sendStatus(400);
+
+  var userName = req.body.name;
+  var userAge = req.body.age;
+  var user = { name: userName, age: userAge };
+
+  var data = fs.readFileSync("users.json", "utf8");
+  var users = JSON.parse(data);
+
+  // находим максимальный id
+  var id = Math.max.apply(
+    Math,
+    users.map(function (o) {
+      return o.id;
+    })
+  );
+  // увеличиваем его на единицу
+  user.id = id + 1;
+  // добавляем пользователя в массив
+  users.push(user);
+  var data = JSON.stringify(users);
+  // перезаписываем файл с новыми данными
+  fs.writeFileSync("users.json", data);
+  res.send(user);
+});
+
+// удаление пользователя по id
+app.delete("/api/users/:id", function (req, res) {
+  var id = req.params.id;
+  var data = fs.readFileSync("users.json", "utf8");
+  var users = JSON.parse(data);
+  var index = -1;
+  // находим индекс пользователя в массиве
+  for (var i = 0; i < users.length; i++) {
+    if (users[i].id == id) {
+      index = i;
+      break;
+    }
+  }
+  if (index > -1) {
+    // удаляем пользователя из массива по индексу
+    var user = users.splice(index, 1)[0];
+    var data = JSON.stringify(users);
+    fs.writeFileSync("users.json", data);
+    // отправляем удаленного пользователя
+    res.send(user);
+  } else {
+    res.status(404).send();
+  }
+});
+
+// изменение пользователя
+app.put("/api/users", jsonParser, function (req, res) {
+  if (!req.body) return res.sendStatus(400);
+
+  var userId = req.body.id;
+  var userName = req.body.name;
+  var userAge = req.body.age;
+
+  var data = fs.readFileSync("users.json", "utf8");
+  var users = JSON.parse(data);
+  var user;
+  for (var i = 0; i < users.length; i++) {
+    if (users[i].id == userId) {
+      user = users[i];
+      break;
+    }
+  }
+  // изменяем данные у пользователя
+  if (user) {
+    user.age = userAge;
+    user.name = userName;
+    var data = JSON.stringify(users);
+    fs.writeFileSync("users.json", data);
+    res.send(user);
+  } else {
+    res.status(404).send(user);
+  }
+});
+
+app.listen(3000, function () {
+  console.log("Сервер на порту 3000");
+});
--- a/index.html
+++ b/index.html
@@ -0,0 +1,195 @@
+<!DOCTYPE html>
+<html>
+    <head>
+        <meta charset="utf-8" />
+        <meta
+            name="viewport"
+            content="width=device-width"
+        />
+        <title>Список пользователей</title>
+        <link
+            href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"
+            rel="stylesheet"
+        />
+        <script src="https://code.jquery.com/jquery-2.2.4.min.js"></script>
+    </head>
+    <body>
+        <main>
+        <h2 class="my-5 text-center">Список пользователей</h2>
+        <form name="userForm">
+            <input type="hidden" name="id" value="0" />
+            <div class="form-group">
+                <label for="name">Имя:</label>
+                <input class="form-control" name="name" />
+            </div>
+            <div class="form-group">
+                <label for="age">Возраст:</label>
+                <input class="form-control" name="age" />
+            </div>
+            <div class="panel-body">
+                <button
+                    type="submit"
+                    class="btn btn-sm btn-primary">Сохранить</button>
+                <a id="reset" class="btn btn-sm btn-primary">Сбросить</a>
+            </div>
+        </form>
+        <table class="table table-condensed table-striped table-bordered">
+            <thead>
+                <tr>
+                    <th>Id</th>
+                    <th>Имя</th>
+                    <th>возраст</th>
+                    <th></th>
+                </tr>
+            </thead>
+            <tbody></tbody>
+        </table>
+        
+        <script>
+            // Получение всех пользователей
+            function GetUsers() {
+                $.ajax({
+                    url: '/api/users',
+                    type: 'GET',
+                    contentType: 'application/json',
+                    success: function (users) {
+                        var rows = '';
+                        $.each(users, function (
+                            index,
+                            user
+                        ) {
+                            // добавляем полученные элементы в таблицу
+                            rows += row(user);
+                        });
+                        $('table tbody').append(rows);
+                    },
+                });
+            }
+            // Получение одного пользователя
+            function GetUser(id) {
+                $.ajax({
+                    url: '/api/users/' + id,
+                    type: 'GET',
+                    contentType: 'application/json',
+                    success: function (user) {
+                        var form = document.forms['userForm'];
+                        form.elements['id'].value = user.id;
+                        form.elements['name'].value = user.name;
+                        form.elements['age'].value = user.age;
+                    },
+                });
+            }
+            // Добавление пользователя
+            function CreateUser(userName, userAge) {
+                $.ajax({
+                    url: 'api/users',
+                    contentType: 'application/json',
+                    method: 'POST',
+                    data: JSON.stringify({
+                        name: userName,
+                        age: userAge,
+                    }),
+                    success: function (user) {
+                        reset();
+                        $('table tbody').append(row(user));
+                    },
+                });
+            }
+            // Изменение пользователя
+            function EditUser(userId, userName, userAge) {
+                $.ajax({
+                    url: 'api/users',
+                    contentType: 'application/json',
+                    method: 'PUT',
+                    data: JSON.stringify({
+                        id: userId,
+                        name: userName,
+                        age: userAge,
+                    }),
+                    success: function (user) {
+                        reset();
+                        $("tr[data-rowid='" + user.id +"']").replaceWith(row(user));
+                    },
+                });
+            }
+
+            // сброс формы
+            function reset() {
+                var form = document.forms['userForm'];
+                form.reset();
+                form.elements['id'].value = 0;
+            }
+
+            // Удаление пользователя
+            function DeleteUser(id) {
+                $.ajax({
+                    url: 'api/users/' + id,
+                    contentType: 'application/json',
+                    method: 'DELETE',
+                    success: function (user) {
+                        console.log(user);
+                        $(
+                            "tr[data-rowid='" +
+                                user.id +
+                                "']"
+                        ).remove();
+                    },
+                });
+            }
+            // создание строки для таблицы
+            var row = function (user) {
+                return (
+                    "<tr data-rowid='" +
+                    user.id +
+                    "'><td>" +
+                    user.id +
+                    '</td>' +
+                    '<td>' +
+                    user.name +
+                    '</td> <td>' +
+                    user.age +
+                    '</td>' +
+                    "<td><a class='editLink' data-id='" +
+                    user.id +
+                    "'>Изменить</a> | " +
+                    "<a class='removeLink' data-id='" +
+                    user.id +
+                    "'>Удалить</a></td></tr>"
+                );
+            };
+            // сброс значений формы
+            $('#reset').click(function (e) {
+                e.preventDefault();
+                reset();
+            });
+
+            // отправка формы
+            $('form').submit(function (e) {
+                e.preventDefault();
+                var id = this.elements['id'].value;
+                var name = this.elements['name'].value;
+                var age = this.elements['age'].value;
+                if (id == 0) CreateUser(name, age);
+                else EditUser(id, name, age);
+            });
+
+            // нажимаем на ссылку Изменить
+            $('body').on('click', '.editLink', function () {
+                var id = $(this).data('id');
+                GetUser(id);
+            });
+            // нажимаем на ссылку Удалить
+            $('body').on(
+                'click',
+                '.removeLink',
+                function () {
+                    var id = $(this).data('id');
+                    DeleteUser(id);
+                }
+            );
+
+            // загрузка пользователей
+            GetUsers();
+        </script>
+    </body>
+</html>
--- a/package-lock.json
+++ b/package-lock.json
@@ -0,0 +1,641 @@
+{
+    "name": "webapp",
+    "version": "1.0.0",
+    "lockfileVersion": 3,
+    "requires": true,
+    "packages": {
+        "": {
+            "name": "webapp",
+            "version": "1.0.0",
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+                "mime-types": "~2.1.34",
+                "negotiator": "0.6.3"
+            },
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+        },
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+}
--- a/package.json
+++ b/package.json
@@ -0,0 +1,20 @@
+{
+  "name": "nodejs-api-webapp",
+  "version": "1.0.0",
+  "dependencies": {
+    "body-parser": "^1.16.0",
+    "express": "^4.18.2"
+  },
+  "description": "https://nodejsdev.ru/guides/metanit/express-api/",
+  "main": "app.js",
+  "devDependencies": {},
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "http://kormcraft.ddns.net:3000/Antone/TIS-lab4.git"
+  },
+  "author": "Antone",
+  "license": "UNLICENSED"
+}
--- a/users.json
+++ b/users.json
@@ -0,0 +1 @@
+[{"id":1,"name":"Tom","age":24},{"id":2,"name":"Bob","age":27},{"id":3,"name":"Alice","age":"23"},{"name":"Антоне","age":"400","id":4},{"name":"мяу мау мау","age":"bababooye","id":5}]
				`@@ -0,0 +1 @@`
				`[{"id":1,"name":"Tom","age":24},{"id":2,"name":"Bob","age":27},{"id":3,"name":"Alice","age":"23"},{"name":"Антоне","age":"400","id":4},{"name":"мяу мау мау","age":"bababooye","id":5}]`