chore: use the echo framework instead of plain go net/http

internal/models/client.go

@@ -22,21 +22,27 @@ type CreateClientBody struct {
 	Phone   string `json:"phone"`
 }
 
-func (wrapper *DBWrapper) MigrateClients() {
-	wrapper.db.AutoMigrate(&Client{})
+type UpdateClientBody struct {
+	Name    string `json:"name"`
+	Country string `json:"country"`
+	Phone   string `json:"phone"`
 }
 
-func (wrapper *DBWrapper) CreateClient(body CreateClientBody) Client {
+func (db *DB) MigrateClients() {
+	db.instance.AutoMigrate(&Client{})
+}
+
+func (db *DB) CreateClient(body CreateClientBody) Client {
 	client := Client{Name: body.Name, Country: body.Country, Phone: body.Phone}
 
-	wrapper.db.Create(&client)
+	db.instance.Create(&client)
 	return client
 }
 
-func (wrapper *DBWrapper) GetClients() ([]Client, error) {
+func (db *DB) GetClients() ([]Client, error) {
 	var clients []Client
 
-	result := wrapper.db.Find(&clients)
+	result := db.instance.Find(&clients)
 
 	if result.Error != nil {
 		return nil, result.Error
@@ -45,8 +51,34 @@ func (wrapper *DBWrapper) GetClients() ([]Client, error) {
 	return clients, nil
 }
 
-func (wrapper *DBWrapper) GetClient(id int, client *Client) error {
-	result := wrapper.db.Where("id = ?", id).First(&client, id)
+func (db *DB) GetClient(id int, client *Client) error {
+	result := db.instance.Where("id = ?", id).First(&client, id)
+
+	if result.Error != nil {
+		return result.Error
+	}
+
+	return nil
+}
+
+func (db *DB) UpdateClient(id int, body UpdateClientBody, 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})
+
+	if result.Error != nil {
+		return result.Error
+	}
+
+	return nil
+}
+
+func (db *DB) DeleteClient(id int) error {
+	result := db.instance.Delete(&Client{}, id)
 
 	if result.Error != nil {
 		return result.Error