// Get details about a visualization
func getVisualization(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
vars := mux.Vars(r)
key, err := datastore.DecodeKey(vars["key"])
if err != nil {
common.Serve404(w)
return
}
var e model.Visualization
err = datastore.Get(c, key, &e)
if err != nil {
if err == datastore.ErrNoSuchEntity {
common.Serve404(w)
return
}
common.ServeError(c, w, err)
return
}
res := map[string]interface{}{
"Owner": key.Parent().StringID(),
"Title": e.Title,
"Date": e.Date,
"Files": e.Files,
}
common.WriteJson(c, w, res)
}
// Get a file that is part of a visualization
func getVisualizationFile(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
vars := mux.Vars(r)
// Get visualization object
key, err := datastore.DecodeKey(vars["key"])
if err != nil {
common.Serve404(w)
return
}
var e model.Visualization
err = datastore.Get(c, key, &e)
if err != nil {
if err == datastore.ErrNoSuchEntity {
common.Serve404(w)
return
}
common.ServeError(c, w, err)
return
}
// Find blob key
filename := vars["filename"]
for i := range e.Files {
if e.Files[i].Filename == filename {
blobstore.Send(w, appengine.BlobKey(e.Files[i].BlobKey))
return
}
}
common.Serve404(w)
}
// Seat a title for a visualization
func setVisualizationTitle(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
vars := mux.Vars(r)
u := user.Current(c)
// Check if user is logged in
if u == nil {
common.Serve401(w)
return
}
title := r.PostFormValue("title")
key, err := datastore.DecodeKey(vars["key"])
if err != nil {
common.Serve404(w)
return
}
// Check if user is the owner
if key.Parent().StringID() != u.ID {
common.Serve403(w)
return
}
// Start a datastore transaction
var e model.Visualization
err = datastore.RunInTransaction(c, func(c appengine.Context) error {
// Get the visualization object
err = datastore.Get(c, key, &e)
if err != nil {
return err
}
// Change the title
e.Title = title
// Save the visualization object
key, err = datastore.Put(c, key, &e)
return err
}, nil)
if err != nil {
if err == datastore.ErrNoSuchEntity {
common.Serve404(w)
return
}
common.ServeError(c, w, err)
return
}
}
// Get a file that is part of a module
func getModuleFile(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
vars := mux.Vars(r)
// Get module object
accKey, _, err := model.GetAccountByDevname(c, vars["devname"])
if err != nil {
common.ServeError(c, w, err)
return
}
if accKey == nil {
common.Serve404(w)
return
}
key := datastore.NewKey(c, "module", vars["name"], 0, accKey)
var e model.Module
err = datastore.Get(c, key, &e)
if err != nil {
if err == datastore.ErrNoSuchEntity {
common.Serve404(w)
return
}
common.ServeError(c, w, err)
return
}
// Find blob key
filename := vars["filename"]
for i := range e.Files {
if e.Files[i].Filename == filename {
blobstore.Send(w, appengine.BlobKey(e.Files[i].BlobKey))
return
}
}
common.Serve404(w)
}
// Get index file (html) for a visualization
func getVisualizationIndex(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
vars := mux.Vars(r)
// Get visualization object
key, err := datastore.DecodeKey(vars["key"])
if err != nil {
common.Serve404(w)
return
}
var e model.Visualization
err = datastore.Get(c, key, &e)
if err != nil {
if err == datastore.ErrNoSuchEntity {
common.Serve404(w)
return
}
common.ServeError(c, w, err)
return
}
// Check if avy.js exists
exists := false
for i := range e.Files {
if e.Files[i].Filename == "avy.js" {
exists = true
break
}
}
if exists {
templates.ExecuteTemplate(w, "index", nil)
} else {
templates.ExecuteTemplate(w, "noavyjs", nil)
}
}
// Get details about a module
func getModule(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
vars := mux.Vars(r)
accKey, _, err := model.GetAccountByDevname(c, vars["devname"])
if err != nil {
if err == datastore.ErrNoSuchEntity {
common.Serve404(w)
return
}
common.ServeError(c, w, err)
return
}
key := datastore.NewKey(c, "module", vars["name"], 0, accKey)
var e model.Module
err = datastore.Get(c, key, &e)
if err != nil {
if err == datastore.ErrNoSuchEntity {
common.Serve404(w)
return
}
common.ServeError(c, w, err)
return
}
res := map[string]interface{}{
"Owner": key.Parent().StringID(),
"Devname": e.Devname,
"Name": e.Name,
"Date": e.Date,
"Files": e.Files,
}
common.WriteJson(c, w, res)
}
// Create a new module
func newModule(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
u := user.Current(c)
acc, err := model.GetAccount(c, u)
if err != nil {
common.ServeError(c, w, err)
return
}
if acc == nil {
common.Serve401(w)
return
}
// Parse form data
devname := r.PostFormValue("devname")
name := r.PostFormValue("name")
// Set user developer name
if acc.Devname == "" {
if devname == "" {
common.Serve404(w) // TODO: maybe 400 instead
return
}
acc.Devname = devname
err := model.SaveAccount(c, u, acc)
if err != nil {
common.ServeError(c, w, err)
return
}
} else {
devname = acc.Devname
}
e := model.Module{devname, name, time.Now(), nil}
_, err = datastore.Put(c, datastore.NewKey(c, "module", name, 0, model.GetAccountKey(c, u)), &e)
if err != nil {
common.ServeError(c, w, err)
return
}
common.WriteJson(c, w, map[string]string{"Devname": devname, "Name": name})
}
// Serve a 404 error - file not found
func anif404(w http.ResponseWriter, r *http.Request) {
common.Serve404(w)
}
// Upload a file to a visualization
func postVisualizationFile(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
vars := mux.Vars(r)
u := user.Current(c)
// Check if user is logged in
if u == nil {
common.Serve401(w)
return
}
key, err := datastore.DecodeKey(vars["key"])
if err != nil {
common.Serve404(w)
return
}
// Check if user is the owner
if key.Parent().StringID() != u.ID {
common.Serve403(w)
return
}
// Start a datastore transaction
var e model.Visualization
err = datastore.RunInTransaction(c, func(c appengine.Context) error {
// Get the visualization object
err = datastore.Get(c, key, &e)
if err != nil {
return err
}
if vars["action"] == "delete" {
e.Files, err = deleteFile(c, r, e.Files)
if err != nil {
return err
}
} else {
e.Files, err = uploadFile(c, r, e.Files)
if err != nil {
return err
}
}
// Save the visualization object
key, err = datastore.Put(c, key, &e)
return err
}, nil)
if err != nil {
if err == datastore.ErrNoSuchEntity {
common.Serve404(w)
return
}
common.ServeError(c, w, err)
return
}
res := map[string]interface{}{
"Owner": key.Parent().StringID(),
"Title": e.Title,
"Date": e.Date,
"Files": e.Files,
}
common.WriteJson(c, w, res)
}