From 50187f5a349257258e75ee2eb2e20d9c0b8ecdc9 Mon Sep 17 00:00:00 2001
From: Eden Kirin <eden@ekirin.com>
Date: Thu, 26 Oct 2023 17:40:05 +0200
Subject: [PATCH] Set user password

---
 app/lib/auth/auth.go              |  1 +
 app/lib/auth/passwords.go         | 41 +++++++++++++++++++++++++++++++
 app/models/user.go                | 16 ++++++++----
 app/templates/pages/user-edit.jet |  4 +++
 app/views/users.go                | 10 ++++++++
 5 files changed, 67 insertions(+), 5 deletions(-)
 create mode 100644 app/lib/auth/auth.go
 create mode 100644 app/lib/auth/passwords.go

diff --git a/app/lib/auth/auth.go b/app/lib/auth/auth.go
new file mode 100644
index 0000000..8832b06
--- /dev/null
+++ b/app/lib/auth/auth.go
@@ -0,0 +1 @@
+package auth
diff --git a/app/lib/auth/passwords.go b/app/lib/auth/passwords.go
new file mode 100644
index 0000000..142766c
--- /dev/null
+++ b/app/lib/auth/passwords.go
@@ -0,0 +1,41 @@
+package auth
+
+import (
+	"regexp"
+
+	"golang.org/x/crypto/bcrypt"
+)
+
+// about bcrypt cost: https://docs.laminas.dev/laminas-crypt/password/#bcrypt
+// bcrypt cost benchmarks: https://github.com/nsmithuk/bcrypt-cost-go
+const BCRYPT_COST = 10
+const MIN_PASSWORD_LENGTH = 10
+
+func IsPasswordGoodEnough(password string) bool {
+	var re *regexp.Regexp
+	passwordBytes := []byte(password)
+
+	if len(password) < MIN_PASSWORD_LENGTH {
+		return false
+	}
+	re, _ = regexp.Compile("[a-z]")
+	if re.Find(passwordBytes) == nil {
+		return false
+	}
+	re, _ = regexp.Compile("[A-Z]")
+	if re.Find(passwordBytes) == nil {
+		return false
+	}
+	re, _ = regexp.Compile("[0-9]")
+	//lint:ignore S1008 allow early exit instead optimization
+	if re.Find(passwordBytes) == nil {
+		return false
+	}
+
+	return true
+}
+
+func HashPassword(password string, secretKey string) (string, error) {
+	bytes, err := bcrypt.GenerateFromPassword([]byte(password+secretKey), BCRYPT_COST)
+	return string(bytes), err
+}
diff --git a/app/models/user.go b/app/models/user.go
index 37d8c11..f232c2e 100644
--- a/app/models/user.go
+++ b/app/models/user.go
@@ -1,6 +1,8 @@
 package models
 
 import (
+	"iris-test/app/lib/auth"
+	"iris-test/app/lib/cfg"
 	"time"
 )
 
@@ -19,8 +21,12 @@ func (u *User) TableName() string {
 	return "users"
 }
 
-// func (u *User) SetPassword(password string) (string, error) {
-// 	secretKey := common.Config.Application.SecretKey
-// 	bytes, err := bcrypt.GenerateFromPassword([]byte(password+secretKey), 14)
-// 	return string(bytes), err
-// }
+func (u *User) SetPassword(password string) error {
+	secretKey := cfg.Config.Application.SecretKey
+	hashedPassword, err := auth.HashPassword(password, secretKey)
+	if err != nil {
+		return err
+	}
+	u.Password = hashedPassword
+	return nil
+}
diff --git a/app/templates/pages/user-edit.jet b/app/templates/pages/user-edit.jet
index 6ec6931..93a36cc 100644
--- a/app/templates/pages/user-edit.jet
+++ b/app/templates/pages/user-edit.jet
@@ -20,6 +20,10 @@
                 <label class="form-label">Email</label>
                 <input type="email" name="email" class="form-control" value="{{ user.Email }}" required>
             </div>
+            <div class="mb-3">
+                <label class="form-label">Password</label>
+                <input type="text" name="password" class="form-control">
+            </div>
 
             <div class="d-flex">
                 <a href="/users" class="btn btn-outline-secondary ms-auto me-2">
diff --git a/app/views/users.go b/app/views/users.go
index 761352f..6321873 100644
--- a/app/views/users.go
+++ b/app/views/users.go
@@ -1,6 +1,8 @@
 package views
 
 import (
+	"fmt"
+	"iris-test/app/lib/auth"
 	"iris-test/app/repository"
 
 	"github.com/kataras/iris/v12"
@@ -10,6 +12,7 @@ type editUserForm struct {
 	FirstName string `form:"first-name"`
 	LastName  string `form:"last-name"`
 	Email     string `form:"email"`
+	Password  string `form:"password"`
 }
 
 func GetUsersPage(ctx iris.Context) {
@@ -66,6 +69,13 @@ func SaveUserPage(ctx iris.Context) {
 	user.LastName = form.LastName
 	user.Email = form.Email
 
+	if len(form.Password) > 0 {
+		user.SetPassword(form.Password)
+		fmt.Printf("Set password: %s\n", user.Password)
+		fmt.Printf("IsPasswordGoodEnough: %v\n", auth.IsPasswordGoodEnough(form.Password))
+
+	}
+
 	userRepository.Save(user)
 
 	ctx.Redirect("/users")