chore: add request validations

internal/api/api.go

@@ -1,6 +1,7 @@
 package api
 
 import (
+	"github.com/go-playground/validator/v10"
 	"github.com/hazemKrimi/crimson-vault/internal/models"
 	"github.com/labstack/echo/v4"
 	"github.com/labstack/echo/v4/middleware"
@@ -14,6 +15,7 @@ type API struct {
 func (api *API) Initialize() {
 	db := &models.DB{}
 	ech := echo.New()
+	ech.Validator = &CustomValidator{validator: validator.New(validator.WithRequiredStructEnabled())}
 
 	db.Connect()
 	db.MigrateClients()

internal/api/client.go

@@ -11,13 +11,17 @@ import (
 )
 
 func (api *API) CreateClientHandler(context echo.Context) error {
-	var body models.CreateClientBody
+	var body models.CreateClientRequestBody
 
 	if err := context.Bind(&body); err != nil {
 		log.Println(fmt.Sprintf("Error creating Client: %v.", err))
 		return context.String(http.StatusBadRequest, "Invalid JSON!")
 	}
 
+	if err := context.Validate(body); err != nil {
+		return err
+	}
+
 	client := api.db.CreateClient(body)
 
 	log.Println(fmt.Sprintf("Client created with ID %d.", client.ID))
@@ -71,13 +75,17 @@ func (api *API) UpdateClientHandler(context echo.Context) error {
 		return context.String(http.StatusInternalServerError, "Unexpected error updating Client!")
 	}
 
-	var body models.UpdateClientBody
+	var body models.UpdateClientRequestBody
 
 	if err := context.Bind(&body); err != nil {
 		log.Println(fmt.Sprintf("Error updating Client: %v.", err))
 		return context.String(http.StatusBadRequest, "Invalid JSON!")
 	}
 
+	if err := context.Validate(body); err != nil {
+		return err
+	}
+
 	var client models.Client
 
 	if err := api.db.UpdateClient(id, body, &client); err != nil {

internal/api/validator.go

@@ -0,0 +1,19 @@
+package api
+
+import (
+	"net/http"
+
+	"github.com/go-playground/validator/v10"
+	"github.com/labstack/echo/v4"
+)
+
+type CustomValidator struct {
+	validator *validator.Validate
+}
+
+func (validator *CustomValidator) Validate(i any) error {
+	if err := validator.validator.Struct(i); err != nil {
+		return echo.NewHTTPError(http.StatusBadRequest, err.Error())
+	}
+	return nil
+}

internal/models/client.go

@@ -20,31 +20,31 @@ type Client struct {
 	Email      string         `json:"email"`
 }
 
-type CreateClientBody struct {
-	Name       string         `json:"name"`
+type CreateClientRequestBody struct {
+	Name       string         `json:"name" validate:"required"`
 	FiscalCode string         `json:"fiscalCode"`
-	Address    string         `json:"address"`
-	Zip        string         `json:"zip"`
-	Country    string         `json:"country"`
-	Phone      string         `json:"phone"`
-	Email      string         `json:"email"`
+	Address    string         `json:"address" validate:"required"`
+	Zip        string         `json:"zip" validate:"required"`
+	Country    string         `json:"country" validate:"required"`
+	Phone      string         `json:"phone" validate:"required,e164"`
+	Email      string         `json:"email" validate:"required,email"`
 }
 
-type UpdateClientBody struct {
+type UpdateClientRequestBody struct {
 	Name       string         `json:"name"`
 	FiscalCode string         `json:"fiscalCode"`
 	Address    string         `json:"address"`
 	Zip        string         `json:"zip"`
 	Country    string         `json:"country"`
-	Phone      string         `json:"phone"`
-	Email      string         `json:"email"`
+	Phone      string         `json:"phone" validate:"omitempty,e164"`
+	Email      string         `json:"email" validate:"omitempty,email"`
 }
 
 func (db *DB) MigrateClients() {
 	db.instance.AutoMigrate(&Client{})
 }
 
-func (db *DB) CreateClient(body CreateClientBody) Client {
+func (db *DB) CreateClient(body CreateClientRequestBody) Client {
 	client := Client{Name: body.Name, Country: body.Country, Phone: body.Phone}
 
 	db.instance.Create(&client)
@@ -73,14 +73,22 @@ func (db *DB) GetClient(id int, client *Client) error {
 	return nil
 }
 
-func (db *DB) UpdateClient(id int, body UpdateClientBody, client *Client) error {
+func (db *DB) UpdateClient(id int, body UpdateClientRequestBody, client *Client) error {
 	result := db.instance.Where("id = ?", id).First(&client, id)
 
 	if result.Error != nil {
 		return result.Error
 	}
 
-	result = db.instance.Model(&client).Updates(Client{Name: body.Name, Country: body.Country, Phone: body.Phone})
+	result = db.instance.Model(&client).Updates(Client{
+		Name: body.Name,
+		FiscalCode: body.FiscalCode,
+		Address: body.Address,
+		Zip: body.Zip,
+		Country: body.Country,
+		Phone: body.Phone,
+		Email: body.Email,
+	})
 
 	if result.Error != nil {
 		return result.Error