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package db
import (
"bytes"
"encoding/json"
"errors"
"fmt"
"net/http"
"github.com/bosssauce/ponzu/system/admin/user"
"github.com/boltdb/bolt"
"github.com/nilslice/jwt"
)
// ErrUserExists is used for the db to report to admin user of existing user
var ErrUserExists = errors.New("Error. User exists.")
// ErrNoUserExists is used for the db to report to admin user of non-existing user
var ErrNoUserExists = errors.New("Error. No user exists.")
// SetUser sets key:value pairs in the db for user settings
func SetUser(usr *user.User) (int, error) {
err := store.Update(func(tx *bolt.Tx) error {
email := []byte(usr.Email)
users := tx.Bucket([]byte("_users"))
// check if user is found by email, fail if nil
exists := users.Get(email)
if exists != nil {
return ErrUserExists
}
// get NextSequence int64 and set it as the User.ID
id, err := users.NextSequence()
if err != nil {
return err
}
usr.ID = int(id)
// marshal User to json and put into bucket
j, err := json.Marshal(usr)
if err != nil {
return err
}
err = users.Put(email, j)
if err != nil {
return err
}
return nil
})
if err != nil {
return 0, err
}
return usr.ID, nil
}
// UpdateUser sets key:value pairs in the db for existing user settings
func UpdateUser(usr, updatedUsr *user.User) error {
err := store.Update(func(tx *bolt.Tx) error {
users := tx.Bucket([]byte("_users"))
// check if user is found by email, fail if nil
exists := users.Get([]byte(usr.Email))
if exists == nil {
return ErrNoUserExists
}
// marshal User to json and put into bucket
j, err := json.Marshal(updatedUsr)
if err != nil {
return err
}
err = users.Put([]byte(updatedUsr.Email), j)
if err != nil {
return err
}
err = users.Delete([]byte(usr.Email))
if err != nil {
return err
}
return nil
})
if err != nil {
return err
}
return nil
}
// DeleteUser deletes a user from the db by email
func DeleteUser(email string) error {
err := store.Update(func(tx *bolt.Tx) error {
b := tx.Bucket([]byte("_users"))
err := b.Delete([]byte(email))
if err != nil {
return err
}
return nil
})
if err != nil {
return err
}
return nil
}
// User gets the user by email from the db
func User(email string) ([]byte, error) {
val := &bytes.Buffer{}
err := store.View(func(tx *bolt.Tx) error {
b := tx.Bucket([]byte("_users"))
usr := b.Get([]byte(email))
_, err := val.Write(usr)
if err != nil {
return err
}
return nil
})
if err != nil {
return nil, err
}
return val.Bytes(), nil
}
// UserAll returns all users from the db
func UserAll() ([][]byte, error) {
var users [][]byte
err := store.View(func(tx *bolt.Tx) error {
b := tx.Bucket([]byte("_users"))
err := b.ForEach(func(k, v []byte) error {
users = append(users, v)
return nil
})
if err != nil {
return err
}
return nil
})
if err != nil {
return nil, err
}
return users, nil
}
// CurrentUser extracts the user from the request data and returns the current user from the db
func CurrentUser(req *http.Request) ([]byte, error) {
if !user.IsValid(req) {
return nil, fmt.Errorf("Error. Invalid User.")
}
token, err := req.Cookie("_token")
if err != nil {
return nil, err
}
claims := jwt.GetClaims(token.Value)
email, ok := claims["user"]
if !ok {
return nil, fmt.Errorf("Error. No user data found in request token.")
}
fmt.Println(claims, email.(string))
usr, err := User(email.(string))
if err != nil {
return nil, err
}
fmt.Println(string(usr))
return usr, nil
}
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