110 lines
3.9 KiB
JavaScript
110 lines
3.9 KiB
JavaScript
const Msg = require('../models/msg'); //import msg model
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//GET all messages
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const getAllMsg = (req, res) => {
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// Get info for the database and returns json data along with a 200 status code
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// or returns the error json with 404
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Msg.find({}, (err, data)=>{
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if (err){
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return res.status(404).json({Error: err});
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}
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return res.status(200).json(data);
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})
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};
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//GET message based on id
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const getOneMsg = (req, res) => {
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// Finds the id within the database and returns json data along with a 200 status code
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// returns the error json with 404 if an error is returned
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// or it is assumed the message doesnt exist so a 400 message is returned instead
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Msg.findOne({id:req.params.id}, (err, data) => {
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if(data) {
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return res.status(200).json(data);
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}else{
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if(err) return res.status(404).json(`Something went wrong, please try again. ${err}`);
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return res.status(400).json({message: "Message can't be found, it doesn't exist."});
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}
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});
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};
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//POST message
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const newMsg = (req, res) => {
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//check if the id already exists in db
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Msg.findOne({ id:req.params.id }, (err, data) => {
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//if this message is not in db, add it
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if (!data) {
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//create a new Msg object using the Msg model, req.params and req.body
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const newMsg = new Msg({
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id:req.params.id,
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message:req.body.message,
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time: Date.now(),
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})
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// save this object to database
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newMsg.save((err, data)=>{
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if(err) return res.status(404).json({Error: err});
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return res.status(201).json(data);
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})
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//if there's an error or the message is already in db, return an error message
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}else{
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if(err) return res.status(404).json(`Something went wrong, please try again. ${err}`);
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return res.status(400).json({message:"Message can't be posted. A message with that id already exists."});
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}
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})
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};
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//PUT message based on id
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const updateMsg = (req, res) => {
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// Finds the id within the database and updates json data along with a 200 status code
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// returns the error json with 404 if an error is returned
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// or it is assumed the message doesnt exist so a 400 message is returned instead
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Msg.findOneAndUpdate({id:req.params.id}, {message:req.body.message}, {new: true}, (err, data) => {
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if (data) {
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return res.status(201).json(data);
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}else{
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if(err) return res.status(404).json(`Something went wrong, please try again. ${err}`);
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return res.status(400).json({message:"Message can't be updated, it doesn't exist."});
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}
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})
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};
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//DELETE all messages
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const deleteAllMsg = (req, res) => {
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// Deletes all info from database and returns a json message and a 200 status code
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// or returns the error json with 404
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Msg.deleteMany({}, err => {
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if(err) {
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return res.status(404).json({message: "Deletion of all messages failed"});
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}
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return res.status(200).json({message: "Deletion of all messages successful"});
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})
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};
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//DELETE message based on id
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const deleteOneMsg = (req, res) => {
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// Finds the id within the database and removes json data along with a 200 status code
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// returns the error json with 404 if an error is returned
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// or it is assumed the message doesnt exist so a 400 message is returned instead
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Msg.deleteOne({id:req.params.id}, (err, data) => {
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if (err) return res.status(404).json(`Something went wrong, please try again. ${err}`);
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else if( data.deletedCount == 0) return res.status(400).json({message: "Message can't be deleted, it doesn't exist."});
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else return res.status(200).json({message: "Message deleted."});
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});
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};
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//export controller functions
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module.exports = {
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getAllMsg,
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getOneMsg,
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newMsg,
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updateMsg,
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deleteOneMsg,
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deleteAllMsg
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}; |