Async/Await Example 🗽🔗

Author: lgope

.gitignore

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+Password-Generator

Asynchronous-JavaScript/Asynchronous-Example/.prettierrc

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+{
+  "singleQuote": true,
+  "printWidth": 100
+}

Asynchronous-JavaScript/Asynchronous-Example/dog-img.txt

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+https://images.dog.ceo/breeds/labrador/n02099712_2332.jpg
+https://images.dog.ceo/breeds/labrador/n02099712_1200.jpg
+https://images.dog.ceo/breeds/labrador/n02099712_1414.jpg

Asynchronous-JavaScript/Asynchronous-Example/dog.txt

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+labrador

Asynchronous-JavaScript/Asynchronous-Example/index.js

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+const fs = require('fs');
+const superagent = require('superagent');
+
+const readFilePromise = file => {
+  return new Promise((resolve, reject) => {
+    fs.readFile(file, (err, data) => {
+      if (err) reject('I could not find that file 😥');
+      resolve(data);
+    });
+  });
+};
+
+const writeFilePromise = (file, data) => {
+  return new Promise((resolve, reject) => {
+    fs.writeFile(file, data, err => {
+      if (err) reject('Could not write file 😥');
+      resolve('Success! ✌');
+    });
+  });
+};
+
+const getDogPic = async () => {
+  try {
+    const data = await readFilePromise(`${__dirname}/dog.txt`);
+    console.log(`Breed: ${data}`);
+
+    const res1Pro = superagent.get(`https://dog.ceo/api/breed/${data}/images/random`);
+    const res2Pro = superagent.get(`https://dog.ceo/api/breed/${data}/images/random`);
+    const res3Pro = superagent.get(`https://dog.ceo/api/breed/${data}/images/random`);
+
+    const all = await Promise.all([res1Pro, res2Pro, res3Pro]);
+    const imgs = all.map(el => el.body.message);
+
+    await writeFilePromise('dog-img.txt', imgs.join('\n'));
+    console.log('Random dog image saved to file!');
+  } catch (err) {
+    console.log(err);
+    throw err;
+  }
+
+  return '2: READY 🐶';
+};
+
+(async () => {
+  try {
+    console.log('1: Will get dog pics!');
+    const x = await getDogPic();
+    console.log(x);
+    console.log('3: Done getting dog pics!');
+  } catch (err) {
+    console.log('ERROR 💥');
+  }
+})();
+/* console.log('1: Will get dog pics!');
+getDogPic()
+  .then(x => {
+    console.log(x);
+    console.log('3: Done getting dog pics!');
+  })
+  .catch(err => {
+    console.log('ERROR 💥');
+  }); */
+
+/* readFilePromise(`${__dirname}/dog.txt`)
+    .then(data => {
+        console.log(`Breed: ${data}`);
+        return superagent.get(`https://dog.ceo/api/breed/${data}/images/random`);
+    })
+    .then(res => {
+        console.log(res.body.message);
+        return writeFilePromise('dog-img.txt', res.body.message);
+    })
+    .then(() => {
+        console.log('Random dog image saved to file!');
+    })
+    .catch(err => console.log(err)); */
+
+/* fs.readFile(`${__dirname}/dog.txt`, (err, data) => {
+
+    if (err) return console.log(err.message);
+
+    console.log(`Breed: ${data}`);
+
+    superagent.get(`https://dog.ceo/api/breed/${data}/images/random`).then(res => {
+
+        console.log(res.body.message);
+
+        fs.writeFile('dog-img.txt', res.body.message, err => {
+            if (err) return console.log(err.message);
+            console.log('Random dog image saved to file!');
+        });
+    }).catch(err => console.log(err.message));
+});
+ */

Asynchronous-JavaScript/Asynchronous-Example/package-lock.json

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+{
+  "name": "asynchronous-js",
+  "version": "1.0.0",
+  "description": "All about asynchronous javascript",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/Lakshmangope/node.js.git"
+  },
+  "author": "Lakshman Gope",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/Lakshmangope/node.js/issues"
+  },
+  "homepage": "https://github.com/Lakshmangope/node.js#readme",
+  "dependencies": {
+    "superagent": "^5.1.0"
+  }
+}