Library/models/user.go

132 lines
3.4 KiB
Go

package models
import (
"github.com/dgrijalva/jwt-go"
"github.com/labstack/echo"
"golang.org/x/crypto/bcrypt"
)
// UserLogin Object to recive user credentials in JSON format
type UserLogin struct {
Username string `json:"username" form:"username"`
Password string `json:"password" form:"password"`
}
// User holds information about an user
type User struct {
ID int64 `xorm:"int(11) autoincr not null unique pk" json:"id"`
Name string `xorm:"varchar(250)" json:"name"`
Username string `xorm:"varchar(250) not null unique" json:"username"`
Password string `xorm:"varchar(250) not null" json:"password"`
Email string `xorm:"varchar(250)" json:"email"`
IsAdmin bool `xorm:"tinyint(1) not null" json:"isAdmin"`
Created int64 `xorm:"created" json:"created"`
Updated int64 `xorm:"updated" json:"updated"`
}
// UserLog logs user actions
type UserLog struct {
ID int64 `xorm:"int(11) autoincr not null unique pk" json:"id"`
UserID int64 `xorm:"int(11)" json:"userID"`
Log string `xorm:"varchar(250)" json:"log"`
ItemID int64 `xorm:"int(11)" json:"itemID"`
Time int64 `xorm:"created" json:"time"`
}
// TableName returns the table name for users
func (User) TableName() string {
return "users"
}
// GetUserByID gets informations about a user by its ID
func GetUserByID(id int64) (user User, exists bool, err error) {
// Apparently xorm does otherwise look for all users but return only one, which leads to returing one even if the ID is 0
if id == 0 {
return User{}, false, nil
}
return GetUser(User{ID: id})
}
// GetUser gets a user object
func GetUser(user User) (userOut User, exists bool, err error) {
userOut = user
exists, err = x.Get(&userOut)
//fmt.Println(user, userOut, exists, err)
return userOut, exists, err
}
// CheckUserCredentials checks user credentials
func CheckUserCredentials(u *UserLogin) (User, error) {
// Check if the user exists
user, exists, err := GetUser(User{Username: u.Username})
if err != nil {
return User{}, err
}
if !exists {
return User{}, ErrUserDoesNotExist{}
}
// Check the users password
err = bcrypt.CompareHashAndPassword([]byte(user.Password), []byte(u.Password))
if err != nil {
return User{}, err
}
return user, nil
}
// GetCurrentUser returns the current user based on its jwt token
func GetCurrentUser(c echo.Context) (user User, err error) {
jwtinf := c.Get("user").(*jwt.Token)
claims := jwtinf.Claims.(jwt.MapClaims)
userID, ok := claims["id"].(float64)
if !ok {
return user, ErrCouldNotGetUserID{}
}
user = User{
ID: int64(userID),
Name: claims["name"].(string),
Email: claims["email"].(string),
Username: claims["username"].(string),
}
return
}
// LogAction logs a user action
func logAction(action string, user User, itemID int64) (err error) {
_, err = x.Insert(UserLog{Log: action, UserID: user.ID, ItemID: itemID})
return
}
// LogAction logs a user action
func LogAction(action string, itemID int64, c echo.Context) (err error) {
// Get the user options
user, err := GetCurrentUser(c)
if err != nil {
return err
}
return logAction(action, user, itemID)
}
// IsAdmin checks based on it's JWT token if the user is admin
func IsAdmin(c echo.Context) bool {
// Get the users JWT token
jwtinf := c.Get("user").(*jwt.Token)
claims := jwtinf.Claims.(jwt.MapClaims)
// And check if he is admin
if claims["admin"].(bool) {
return true
}
// Send him to nirvarna if not
return false
}