From 616a151764fd1780eb0b6dc039d5a21539a8a01a Mon Sep 17 00:00:00 2001
From: Vidhu Kant Sharma <vidhukant@vidhukant.com>
Date: Sun, 3 Sep 2023 00:19:03 +0530
Subject: added login with id

---
 user/controller.go | 19 +++++++++++++++++++
 user/service.go    | 47 +++++++++++++++++++++++++++++++++--------------
 user/user.go       | 28 +++++++++++++++++++++++++++-
 3 files changed, 79 insertions(+), 15 deletions(-)

(limited to 'user')

diff --git a/user/controller.go b/user/controller.go
index abdcc5b..4933ea3 100644
--- a/user/controller.go
+++ b/user/controller.go
@@ -37,3 +37,22 @@ func handleGetUser (ctx *gin.Context) {
 		"data": user,
 	})
 }
+
+func handleDelUser (ctx *gin.Context) {
+	id := uint(1) // get from JWT
+
+	var user User
+	user.ID = id
+
+	// TODO: add a verification mechanism
+	err := user.del()
+	if err != nil {
+		ctx.Error(err)
+		ctx.Abort()
+		return
+	}
+
+	ctx.JSON(http.StatusOK, gin.H{
+		"message": "success",
+	})
+}
diff --git a/user/service.go b/user/service.go
index 8b3b712..5e0632b 100644
--- a/user/service.go
+++ b/user/service.go
@@ -17,23 +17,42 @@
 
 package user
 
+import (
+	e "vidhukant.com/openbills/errors"
+)
+
 func (u *User) Create() error {
 	res := db.Create(u)
 	// TODO: handle potential errors
 	return res.Error
 }
 
-//func (c *Customer) del() error {
-//	res := db.Delete(c)
-//
-//	// TODO: handle potential errors
-//	if res.Error != nil {
-//		return res.Error
-//	}
-//
-//	if res.RowsAffected == 0 {
-//		return e.ErrNotFound
-//	}
-//
-//	return nil
-//}
+func GetUser(user *User, id uint) error {
+	res := db.Find(&user, id)
+
+	// TODO: handle potential errors
+	if res.Error != nil {
+		return res.Error
+	}
+
+	if res.RowsAffected == 0 {
+		return e.ErrNotFound
+	}
+
+	return nil
+}
+
+func (u *User) del() error {
+	res := db.Delete(u)
+
+	// TODO: handle potential errors
+	if res.Error != nil {
+		return res.Error
+	}
+
+	if res.RowsAffected == 0 {
+		return e.ErrNotFound
+	}
+
+	return nil
+}
diff --git a/user/user.go b/user/user.go
index 1324c0e..68ceb47 100644
--- a/user/user.go
+++ b/user/user.go
@@ -18,15 +18,22 @@
 package user
 
 import (
-	"gorm.io/gorm"
 	d "vidhukant.com/openbills/db"
+	e "vidhukant.com/openbills/errors"
+	"golang.org/x/crypto/bcrypt"
+	"gorm.io/gorm"
+	"github.com/spf13/viper"
+	"errors"
 )
 
+var COST int
 var db *gorm.DB
 func init() {
 	db = d.DB
 
 	db.AutoMigrate(&User{})
+
+	COST = viper.GetInt("cryptography.password_hashing_cost")
 }
 
 type User struct {
@@ -36,3 +43,22 @@ type User struct {
 	Password   string
 	IsVerified bool
 }
+
+func CheckPassword(id uint, pass string) error {
+	var user User
+	err := GetUser(&user, id)
+	if err != nil {
+		return err
+	}
+
+	err = bcrypt.CompareHashAndPassword([]byte(user.Password), []byte(pass))
+	if err != nil {
+		if errors.Is(err, bcrypt.ErrMismatchedHashAndPassword) {
+			return e.ErrWrongPassword
+		}
+
+		return err
+	}
+
+	return nil
+}
-- 
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