/
users.go
70 lines (62 loc) · 1.81 KB
/
users.go
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package api
import (
"crypto/md5"
"errors"
"fmt"
"io"
"strings"
"golang.org/x/net/context"
"google.golang.org/appengine/datastore"
"google.golang.org/appengine/log"
"google.golang.org/appengine/user"
)
type User struct {
Key *datastore.Key `json:"id" datastore:"-"`
UserID string `json:"-" datastore:",noindex"`
DisplayName string `json:"display_name" datastore:",noindex"`
AvatarURL string `json:"avatar_url" datastore:",noindex"`
Score int `json:"score" datastore:",noindex"`
}
// UserFromAEUser gets or creates a User from the currently
// logged in user.
func UserFromAEUser(ctx context.Context) (*User, error) {
aeuser := user.Current(ctx)
if aeuser == nil {
return nil, errors.New("not logged in")
}
var appUser User
appUser.Key = datastore.NewKey(ctx, "User", aeuser.ID, 0, nil)
err := datastore.Get(ctx, appUser.Key, &appUser)
if err != nil && err != datastore.ErrNoSuchEntity {
return nil, err
}
if err == nil {
return &appUser, nil
}
appUser.UserID = aeuser.ID
appUser.DisplayName = aeuser.String()
appUser.AvatarURL = gravatarURL(aeuser.Email)
log.Infof(ctx, "saving new user: %s", aeuser.String())
appUser.Key, err = datastore.Put(ctx, appUser.Key, &appUser)
if err != nil {
return nil, err
}
return &appUser, nil
}
func gravatarURL(email string) string {
m := md5.New()
io.WriteString(m, strings.ToLower(email))
return fmt.Sprintf("//www.gravatar.com/avatar/%x", m.Sum(nil))
}
type UserCard struct {
Key *datastore.Key `json:"id" datastore:",noindex"`
DisplayName string `json:"display_name" datastore:",noindex"`
AvatarURL string `json:"avatar_url" datastore:",noindex"`
}
func (u User) Card() UserCard {
return UserCard{
Key: u.Key,
DisplayName: u.DisplayName,
AvatarURL: u.AvatarURL,
}
}