Chapter 7: initial samples

2020-05-16 14:33:26 +01:00
parent bcf782f7dc
commit adb2130b38
140 changed files with 1777 additions and 1960 deletions
@@ -0,0 +1,42 @@
+const {
+    MongoClient
+} = require('mongodb')
+const task = process.argv[2]
+
+const URI = 'mongodb://localhost:27017/'
+
+MongoClient.connect(URI, {
+    useUnifiedTopology: true
+}, connected)
+
+function connected(err, client) {
+    if (err) throw err
+    const tasks = client.db('tasklist').collection('tasks')
+
+    if (task) {
+        addTask(client, tasks)
+    } else {
+        listTasks(client, tasks)
+    }
+}
+
+function addTask(client, tasks) {
+    tasks.insertOne({
+        task: task
+    }, (err) => {
+        if (err) throw err
+        console.log("New Task: ", task);
+        listTasks(client, tasks)
+    })
+}
+
+function listTasks(client, tasks) {
+    tasks.find().each((err, doc) => {
+        if (err) throw err
+        if (!doc) {
+            client.close()
+            return
+        }
+        console.log(doc)
+    })
+}