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main.go
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main.go
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package main
import (
"encoding/hex"
"fmt"
"github.com/gin-gonic/gin"
"github.com/tidwall/buntdb"
"log"
"math/rand"
"strconv"
"strings"
)
type User struct {
Login string `json:"login"`
Password string `json:"password"`
}
type Registration_User struct {
Login string
Password string
SecondPassword string `json:"secondPassword"`
}
var db, _ = buntdb.Open(":memory:")
func main() {
router := gin.New()
router.POST("/auth", authorization)
router.POST("/registration", registration)
router.POST("/show_users", show_users)
dbInit()
log.Fatal(router.Run(":3031"))
}
func show_users(context *gin.Context) {
db.View(func(tx *buntdb.Tx) error {
tx.Ascend("logins", func(key, value string) bool {
fmt.Printf("%s: %s\n", key, value)
return true
})
return nil
})
}
type LoginResponse struct {
Token string `json:"token"`
}
func authorization(c *gin.Context) {
user := User{}
err := c.BindJSON(&user)
if err != nil {
log.Println(err)
return
}
var user_id int
var user_password string
db.View(func(tx *buntdb.Tx) error {
tx.AscendEqual("logins", user.Login, func(key, value string) bool {
user_id, _ = strconv.Atoi(strings.TrimRight(strings.TrimLeft(key, "user:"), ":login"))
return true
})
tx.AscendKeys(fmt.Sprintf("user:%d:password", user_id), func(key, value string) bool {
user_password = value
return true
})
return nil
})
var sx buntdb.Tx
if user.Password == user_password {
fmt.Println("Пароли совпадают")
token := GenerateSecureToken(16)
var rl = LoginResponse{Token: token}
fmt.Println(token)
sx.Set(fmt.Sprintf("login:%d:token", user_id), token, nil)
c.JSON(200, rl)
} else {
fmt.Println("Пароли не совпадают")
}
}
func GenerateSecureToken(length int) string {
b := make([]byte, length)
if _, err := rand.Read(b); err != nil {
return ""
}
return hex.EncodeToString(b)
}
func registration(c *gin.Context) {
user := Registration_User{}
err := c.BindJSON(&user)
if err != nil {
log.Println(err)
}
if user.Password == user.SecondPassword {
log.Println("Пароли одинаковы")
dbAdd(user.Login, user.Password)
} else {
log.Println("Пароли не подходят")
}
}
func dbInit() {
db.CreateIndex("logins", "user:*:login", buntdb.IndexString)
db.CreateIndex("passwords", "user:*:password", buntdb.IndexString)
db.Update(func(tx *buntdb.Tx) error {
tx.Set("user:1:login", "Egor", nil)
tx.Set("user:1:password", "456", nil)
tx.Set("user:2:login", "Artem", nil)
tx.Set("user:2:password", "123", nil)
tx.Set("user:3:login", "Dima", nil)
tx.Set("user:3:password", "321", nil)
return nil
})
}
func dbAdd(login, password string) {
var users []string
db.View(func(tx *buntdb.Tx) error {
tx.DescendKeys("*", func(key, value string) bool {
users = append(users, key)
return true
})
return nil
})
user_id, _ := strconv.Atoi(strings.TrimRight(strings.TrimLeft(users[0], "user:"), ":password"))
user_id += 1
db.Update(func(tx *buntdb.Tx) error {
tx.Set(fmt.Sprintf("user:%d:login", user_id), login, nil)
tx.Set(fmt.Sprintf("user:%d:password", user_id), password, nil)
return nil
})
}
func dbGet(user_name string) {
db.View(func(tx *buntdb.Tx) error {
var user_id string
fmt.Println("Order by last name")
tx.AscendEqual("logins", user_name, func(key, value string) bool {
user_id = strings.TrimRight(strings.TrimLeft(key, "user:"), ":login")
fmt.Printf("%s \n")
return true
})
return nil
})
}