158 lines
3.7 KiB
JavaScript
158 lines
3.7 KiB
JavaScript
const express=require('express');
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const cors=require('cors');
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const sqlite3=require('sqlite3');
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const app=express();
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const db=new sqlite3.Database('./chinook.db');
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app.use(cors());
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app.use(express.json());
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app.use(express.urlencoded({extended:true}));
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app.listen(8000,()=>{console.log("Running")});
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app.get('/',(req,res)=>{
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res.send("Chinook adatbázis");
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})
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app.get('/genres',(req,res)=>{
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db.all("select * from genres"
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,(error,rows)=>{
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if(error){
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res.status(400).json(error);
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}
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res.status(200).json(rows);
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});
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});
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app.get('/artists',(req,res)=>{
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db.all("select * from artists"
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,(error,rows)=>{
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if(error){
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res.status(400).json(error);
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}
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res.status(200).json(rows);
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});
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});
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app.post('/genres',(req,res)=>{
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const name=req.body.name;
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db.run("insert into genres (Name) values(?)"
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,[name]
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,function (error){
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if(error){
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res.status(400).json(error.message);
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}
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console.log(this.lastID);
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res.status(201).json({message:"Beszúrás rendben "+this.lastID});
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});
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});
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app.post('/artist',(req,res)=>{
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const name=req.body.name;
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db.run("insert into artists (Name) values(?)"
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,[name]
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,function (error){
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if(error){
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res.status(400).json(error.message);
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}
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console.log(this.lastID);
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res.status(201).json({message:"Beszúrás rendben "+this.lastID});
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});
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});
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app.get('/artist-albums/:artist',(req,res)=>{
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const artist=req.params.artist;
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db.all("select Title from albums,artists where albums.ArtistId=artists.ArtistId and artists.Name=?"
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,[artist]
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,(error,rows)=>{
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if(error){
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res.status(400).json(error.message);
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}
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if(rows.length>0){
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res.status(200).json(rows);
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} else {
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res.status(200).json({message:"Az előadónak nincs albuma"});
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}
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});
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});
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app.get('/artistcount',(req,res)=>{
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db.all("select count(*) as db,name from artists,albums where artists.ArtistId=albums.ArtistId group by name"
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,(error,rows)=>{
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if(error){
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res.status(400).json(error.message);
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}
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if(rows.length>0){
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res.status(200).json(rows);
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} else {
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res.status(200).json({message:"Nincs ilyen!"});
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}
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});
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});
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app.get('/artist-albums-tracks/artist/:artist',(req,res)=>{
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const artist=req.params.artist;
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db.all(`select artists.Name,albums.Title as 'album',tracks.Name as 'track',genres.Name as 'genre'
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from artists,albums,tracks,genres,media_types
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where artists.ArtistId=albums.ArtistId
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and
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albums.AlbumId=tracks.AlbumId
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and
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tracks.GenreId=genres.GenreId
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and
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tracks.MediaTypeId=media_types.MediaTypeId
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and artists.Name=?`
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,[artist]
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,(error,rows)=>{
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if(error){
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res.status(400).json("Hiba"+error.message);
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}
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if(rows.length>0){
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res.status(200).json(rows);
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} else {
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res.status(200).json({message:"Nincs ilyen!"});
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}
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});
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})
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app.delete('/genres/:id',(req,res)=>{
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const id=req.params.id;
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db.run("delete from genres where GenreId=?"
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,[id]
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,function(error){
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if(error){
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res.status(400).json({message:error.message});
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} else if(this.changes===0){
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res.status(404).json({message:"Nem található ilyen id-jú rekord"});
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} else {
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res.status(200).json({message:"Törlés sikeres"});
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}
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});
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})
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