protected void Button1_Click(object sender, EventArgs e)
{
if (FileUpload1.HasFile)
{
// string fname = Path.GetFileNameWithoutExtension(FileUpload1.FileName);
string fextension = Path.GetExtension(FileUpload1.FileName);
if (fextension == ".mp3")
{
string artist_name = TextBox3.Text;
string album_name = TextBox2.Text;
string genre_name = TextBox4.Text;
string duration = TextBox5.Text;
string trackname = TextBox1.Text;
song s = new song();
s.album = album_name;
s.artist = artist_name;
s.duration = duration;
s.count = 0;
s.song_rating = 0;
s.track = trackname;
s.counttoday = 0;
db.songs.Add(s);
db.SaveChanges();
songgenre sg = new songgenre();
sg.genre_id = Int32.Parse(genre_name);
sg.song_id = s.song_id;
db.songgenres.Add(sg);
db.SaveChanges();
song_add sa = new song_add();
sa.song_id = s.song_id;
sa.path = s.song_id + ".mp3";
sa.upload_time = System.DateTime.Now;
sa.admin_id = db.admins.Where(a => a.username == System.Web.HttpContext.Current.User.Identity.Name).FirstOrDefault().admin_id;
db.song_add.Add(sa);
db.SaveChanges();
FileUpload1.SaveAs(Server.MapPath("~/") + s.song_id + ".mp3");
Response.Write("<script>alert('Upload Successful')</script>");
}
}
if (!FileUpload1.HasFile)
{
Response.Write("<script>alert('Select atleast one file')</script>");
}
}
protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
{
GridViewRow row = GridView1.SelectedRow;
int id = Int32.Parse(row.Cells[5].Text);
song_add songid = db.song_add.Where(s => s.song_id == id).FirstOrDefault();
song sg = db.songs.Where(s => s.song_id == id).FirstOrDefault();
if (mode == 1)
{
Response.ContentType = "audio/mpeg";
Response.AppendHeader("Content-Disposition", "attachment; filename=" + sg.track);//The third argument represents the name of the file to be downloaded
Response.WriteFile(songid.path);
Response.End();
}
if (mode == 0)
{
string path = "play.aspx?id=";
path += sg.song_id;
Response.Redirect(path);
}
}
protected void Page_Load(object sender, EventArgs e)
{
BeatsEntities db = new BeatsEntities();
user usr = db.users.Where(u => u.username == System.Web.HttpContext.Current.User.Identity.Name).FirstOrDefault();
if (usr == null)
{
Response.Redirect("index.aspx");
}
var p = from c in db.correlations
where c.user1 == usr.user_id//&&c.factor>0
select new { User = c.user2, Correlation = c.factor };
var q = from c in db.correlations
where c.user2 == usr.user_id //&&c.factor>0
//orderby c.factor descending
select new { User = c.user1, Correlation = c.factor };
var alluserswithfactormorethanzero = p.Union(q);
List <sg> ls = new List <sg>();
//getting history of loggged in user
var historyloggeduser = from g in db.histories
where g.user_id == usr.user_id
select new { Id = g.song_id, Ratings = g.ratings };
//getting songlist,userid,ratings as given by the user,and correlation with everyuser of song i haven't heard
foreach (var s in alluserswithfactormorethanzero)
{
var historyuser = from g in db.histories
where g.user_id == s.User
select new { Id = g.song_id, Ratings = g.ratings };
foreach (var hist in historyuser)
{
//checking if the song is heard by the logged in user
var s1 = db.histories.Where(h => h.song_id == hist.Id && h.user_id == usr.user_id).FirstOrDefault();
if (s1 == null)
{
sg sg1 = new sg();
sg1.sgid = hist.Id; //this is songid
sg1.correlid = s.Correlation; //this is correl factor
sg1.usrratings = (int)hist.Ratings;
ls.Add(sg1);
}
}
double totalratings = 0;
double finalratings = 0;
var songidwithcount = from l in ls
group l by l.sgid into songID
select new { Count = songID.Count(), identity = songID.Key };
//getting list of songs with their songid
List <sgg> finalsongs = new List <sgg>();
foreach (var z in songidwithcount)
{
totalratings = 0;
var n = from l in ls
where l.sgid == z.identity
select new { rate = l.usrratings, fact = l.correlid };
foreach (var g in n)
{
totalratings = totalratings + g.rate * g.fact;
}
finalratings = totalratings / z.Count;
if (finalratings > 0)
{
sgg s1 = new sgg();
s1.songid = z.identity;
s1.songrate = finalratings;
finalsongs.Add(s1);
}
}
List <track> tnew = new List <track> ();
foreach (var fs in finalsongs)
{
song ss = db.songs.Where(sn => sn.song_id == fs.songid).FirstOrDefault();
track tr = new track();
if (ss != null)
{
tr.SongId = fs.songid;
tr.Trackname = ss.track;
tr.Artist = ss.artist;
tr.RecommendedRating = fs.songrate;
}
tnew.Add(tr);
}
GridView1.DataSource = tnew;
GridView1.DataBind();
}
}
protected void Page_Load(object sender, EventArgs e)
{
BeatsEntities db = new BeatsEntities();
string user1 = System.Web.HttpContext.Current.User.Identity.Name;
if (Request.QueryString["rating"] != null)
{
int songid = Int32.Parse(Request.QueryString["songid"]);
int rating = Int32.Parse(Request.QueryString["rating"]);
//getting user name
//to get song s of songid id so that we can update count,counttoday,and ratings of that song
if (rating <= 10 && rating >= 0)
{
song s1 = db.songs.Where(y => y.song_id == songid).FirstOrDefault();
s1.count++;
s1.counttoday++;
s1.song_rating = (s1.song_rating * (s1.count - 1) + Int32.Parse(Request.QueryString["rating"])) / s1.count;
db.SaveChanges();
user us = db.users.Where(s => s.username == user1).FirstOrDefault();
if (us != null)
{
history h = db.histories.Where(s => s.user_id == us.user_id && s.song_id == songid).FirstOrDefault();
//checking if user has previously listened the song and then updating the count only else updating the database
if (h == null)
{
history h1 = new history();
h1.song_id = songid;
h1.user_id = us.user_id;
h1.count = 1;
h1.ratings = Int32.Parse(Request.QueryString["rating"]);
h1.time = DateTime.Now;
db.histories.Add(h1);
}
if (h != null)
{
h.count = h.count + 1;
h.time = DateTime.Now;
h.ratings = Int32.Parse(Request.QueryString["rating"]);
}
db.SaveChanges();
List <double> r1 = new List <double>();
List <double> r2 = new List <double>();
int primary = 0, secondary = 0;
foreach (user u in db.users)
{
if (u.user_id != us.user_id)
{
if (u.user_id > us.user_id)
{
secondary = u.user_id;
primary = us.user_id;
}
if (u.user_id < us.user_id)
{
secondary = us.user_id;
primary = u.user_id;
}
//getting histories
var p1 = (from h1 in db.histories
where h1.user_id == primary
select new { Song = h1.song_id, rating = h1.ratings }).ToList();
var p2 = (from h1 in db.histories
where h1.user_id == secondary
select new { Song = h1.song_id, rating = h1.ratings }).ToList();
//getting rating of common songs
foreach (var p in p1)
{
foreach (var q in p2)
{
if (p.Song == q.Song)
{
r1.Add((double)p.rating);
r2.Add((double)q.rating);
}
}
}
if (!(r1.Count == 0 || r2.Count == 0))
{
double correl1 = Correlation.Pearson(r1, r2);
if (!(Double.IsNaN(correl1)))
{
r1.Clear();
r2.Clear();
correlation c = db.correlations.Where(c1 => c1.user1 == primary && c1.user2 == secondary).FirstOrDefault();
if (c == null)
{
correlation c2 = new correlation();
c2.user1 = primary;
c2.user2 = secondary;
c2.factor = (float)correl1;
db.correlations.Add(c2);
}
if (c != null)
{
c.factor = (float)correl1;
}
}
}
}
}
db.SaveChanges();
Response.Redirect("index.aspx");
}
else
{
Response.Redirect("index.aspx");
}
}
}
}
