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server.js
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server.js
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const express = require('express')
const bodyParser = require('body-parser')
const app = express()
const MongoClient = require('mongodb').MongoClient
var ObjectId = require('mongodb').ObjectID;
app.use(bodyParser.json())
var db
MongoClient.connect('mongodb://lab_user:lab_user123@ds239309.mlab.com:39309/one_day_test', (err, client) => {
if (err) return console.log(err)
db = client.db('one_day_test')
app.listen(3000, () => {
console.log('listening on 3000')
})
})
app.get('/', (req, res) => {
db.collection('product').find().toArray(function (err, results) {
if (err) {
res.status(500).json({ api_status: "error", error_details: err });
} else {
res.status(200).json(results);
}
})
})
// challenge 1: POST request, save product information
app.post('/api/product', (req, res) => {
var result_json = {
api_status: "",
data: {}
};
var name = req.body.name;
var price = req.body.price;
if (!name || name.length < 2 || name.length > 50) {
result_json.api_status = "error";
result_json.data = '"Name" is required and must be a string with length between 0 and 50';
return res.status(400).json(result_json)
}
if (typeof price !== 'number') {
price = parseInt(price);
}
if (isNaN(price) || price < 0) {
result_json.api_status = "error";
result_json.data = '"Price" is required and must be number';
return res.status(400).json(result_json)
}
db.collection('product').save(req.body
).then(function (result) {
result_json.api_status = "good";
result_json.data = result.ops[0];
res.status(201).json(result_json);
}).catch(function (err) {
result_json.api_status = "error";
result_json.data = err;
res.status(500).json(result_json)
})
})
// challenge 2: GET request, get product information by ID
app.get('/api/product', (req, res) => {
var result_json = {
api_status: "",
data: {}
};
var idCheck = ObjectId.isValid(req.query.id);
if (!idCheck) {
result_json.api_status = "error";
result_json.data = "Invalid ID Format";
res.status(200).json(result_json)
}
db.collection('product').findOne({ "_id": new ObjectId(req.query.id) }
).then(function (result) {
result_json.api_status = "good";
result_json.data = result;
res.status(200).json(result_json);
}).catch(function (err) {
result_json.api_status = "error";
result_json.data = err;
res.status(500).json(result_json)
})
})
// challenge 3: PUT request, update product information by ID
app.put('/api/product/:id', (req, res) => {
var result_json = {
api_status: "",
data: {}
};
var name = req.body.name;
var price = req.body.price;
if (!name || name.length < 2 || name.length > 50) {
result_json.api_status = "error";
result_json.data = '"Name" is required and must be a string with length between 0 and 50';
return res.status(400).json(result_json)
}
if (typeof price !== 'number') {
price = parseInt(price);
}
if (isNaN(price) || price < 0) {
result_json.api_status = "error";
result_json.data = '"Price" is required and must be number';
return res.status(400).json(result_json)
}
var idCheck = ObjectId.isValid(req.params.id);
if (!idCheck) {
result_json.api_status = "error";
result_json.data = "Invalid ID Format";
res.status(200).json(result_json)
}
db.collection('product').findOneAndUpdate(
{ "_id": new ObjectId(req.params.id) },
{ $set: req.body },
{ new: true, returnOriginal: false }
).then(function (updated_result) {
result_json.api_status = "good";
result_json.data = updated_result.value;
res.status(200).json(result_json);
}).catch(function (err) {
result_json.api_status = "error";
result_json.data = err;
res.status(500).json(result_json)
})
})
// challenge 4: Delete request, delete product information by ID
app.delete('/api/product/:id', function (req, res) {
var result_json = {
api_status: "",
data: []
};
var idCheck = ObjectId.isValid(req.params.id);
if (!idCheck) {
result_json.api_status = "error";
result_json.data = "Invalid ID Format";
res.status(200).json(result_json)
}
db.collection('product').deleteOne(
{ "_id": new ObjectId(req.params.id) },
{ new: true, returnOriginal: false }
)
.then(function (coll) {
result_json.api_status = "good";
result_json.data = [req.params.id];
res.status(200).json(result_json);
})
.catch(function (err) {
result_json.api_status = "error";
result_json.data = err;
res.status(500).json(result_json)
})
})