add voucher duration to the voucher model and set it on voucher creation

Author: Eslam-Nawara

server/app/user_handler.go

@@ -66,9 +66,10 @@ type EmailInput struct {
 
 // ApplyForVoucherInput struct for user to apply for voucher
 type ApplyForVoucherInput struct {
-	VMs       int    `json:"vms" binding:"required" validate:"min=0"`
-	PublicIPs int    `json:"public_ips" binding:"required" validate:"min=0"`
-	Reason    string `json:"reason" binding:"required" validate:"nonzero"`
+	VMs             int    `json:"vms" binding:"required" validate:"min=0"`
+	PublicIPs       int    `json:"public_ips" binding:"required" validate:"min=0"`
+	Reason          string `json:"reason" binding:"required" validate:"nonzero"`
+	VoucherDuration int    `json:"voucher_duration" binding:"required"`
 }
 
 // AddVoucherInput struct for voucher applied by user
@@ -80,7 +81,6 @@ type AddVoucherInput struct {
 func (a *App) SignUpHandler(req *http.Request) (interface{}, Response) {
 	var signUp SignUpInput
 	err := json.NewDecoder(req.Body).Decode(&signUp)
-
 	if err != nil {
 		log.Error().Err(err).Send()
 		return nil, BadRequest(errors.New("failed to read sign up data"))
@@ -573,14 +573,19 @@ func (a *App) ApplyForVoucherHandler(req *http.Request) (interface{}, Response)
 		return nil, BadRequest(errors.New("invalid voucher data"))
 	}
 
+	if input.VoucherDuration > a.config.VouchersMaxDuration {
+		return nil, BadRequest(fmt.Errorf("invalid voucher duration, max duration is %d", a.config.VouchersMaxDuration))
+	}
+
 	// generate voucher for user but can't use it until admin approves it
 	v := internal.GenerateRandomVoucher(5)
 	voucher := models.Voucher{
-		Voucher:   v,
-		UserID:    userID,
-		VMs:       input.VMs,
-		Reason:    input.Reason,
-		PublicIPs: input.PublicIPs,
+		Voucher:         v,
+		UserID:          userID,
+		VMs:             input.VMs,
+		Reason:          input.Reason,
+		PublicIPs:       input.PublicIPs,
+		VoucherDuration: input.VoucherDuration,
 	}
 
 	err = a.db.CreateVoucher(&voucher)

server/app/voucher_handler.go

@@ -4,6 +4,7 @@ package app
 import (
 	"encoding/json"
 	"errors"
+	"fmt"
 	"net/http"
 	"strconv"
 
@@ -17,9 +18,10 @@ import (
 
 // GenerateVoucherInput struct for data needed when user generate vouchers
 type GenerateVoucherInput struct {
-	Length    int `json:"length" binding:"required" validate:"min=3,max=20"`
-	VMs       int `json:"vms" binding:"required"`
-	PublicIPs int `json:"public_ips" binding:"required"`
+	Length          int `json:"length" binding:"required" validate:"min=3,max=20"`
+	VMs             int `json:"vms" binding:"required"`
+	PublicIPs       int `json:"public_ips" binding:"required"`
+	VoucherDuration int `json:"voucher_duration" binding:"required"`
 }
 
 // UpdateVoucherInput struct for data needed when user update voucher
@@ -43,11 +45,16 @@ func (a *App) GenerateVoucherHandler(req *http.Request) (interface{}, Response)
 	}
 	voucher := internal.GenerateRandomVoucher(input.Length)
 
+	if input.VoucherDuration > a.config.VouchersMaxDuration {
+		return nil, BadRequest(fmt.Errorf("invalid voucher duration, max duration is %d", a.config.VouchersMaxDuration))
+	}
+
 	v := models.Voucher{
-		Voucher:   voucher,
-		VMs:       input.VMs,
-		PublicIPs: input.PublicIPs,
-		Approved:  true,
+		Voucher:         voucher,
+		VMs:             input.VMs,
+		PublicIPs:       input.PublicIPs,
+		VoucherDuration: input.VoucherDuration,
+		Approved:        true,
 	}
 
 	err = a.db.CreateVoucher(&v)

server/internal/config_parser.go

@@ -21,6 +21,7 @@ type Configuration struct {
 	NotifyAdminsIntervalHours int         `json:"notifyAdminsIntervalHours"`
 	AdminSSHKey               string      `json:"adminSSHKey"`
 	BalanceThreshold          int         `json:"balanceThreshold"`
+	VouchersMaxDuration       int         `json:"vouchersDuration"`
 }
 
 // Server struct to hold server's information

server/models/voucher.go

@@ -5,15 +5,16 @@ import "time"
 
 // Voucher struct holds data of vouchers
 type Voucher struct {
-	ID        int       `json:"id" gorm:"primaryKey"`
-	UserID    string    `json:"user_id"  binding:"required"`
-	Voucher   string    `json:"voucher" gorm:"unique"`
-	VMs       int       `json:"vms" binding:"required"`
-	PublicIPs int       `json:"public_ips" binding:"required"`
-	Reason    string    `json:"reason" binding:"required"`
-	Used      bool      `json:"used" binding:"required"`
-	Approved  bool      `json:"approved" binding:"required"`
-	Rejected  bool      `json:"rejected" binding:"required"`
-	CreatedAt time.Time `json:"created_at"`
-	UpdatedAt time.Time `json:"updated_at"`
+	ID              int       `json:"id" gorm:"primaryKey"`
+	UserID          string    `json:"user_id"  binding:"required"`
+	Voucher         string    `json:"voucher" gorm:"unique"`
+	VMs             int       `json:"vms" binding:"required"`
+	PublicIPs       int       `json:"public_ips" binding:"required"`
+	Reason          string    `json:"reason" binding:"required"`
+	Used            bool      `json:"used" binding:"required"`
+	Approved        bool      `json:"approved" binding:"required"`
+	Rejected        bool      `json:"rejected" binding:"required"`
+	VoucherDuration int       `json:"voucher_duration" binding:"required"`
+	CreatedAt       time.Time `json:"created_at"`
+	UpdatedAt       time.Time `json:"updated_at"`
 }