feat: add password and fix errors

domain/entity/book/repository_mysql.go

@@ -21,7 +21,7 @@ func NewMySQLRepoRepository(db *sql.DB) *MySQLRepo {
 	}
 }
 
-//Create an user
+//Create a book
 func (r *MySQLRepo) Create(e *Book) (entity.ID, error) {
 	stmt, err := r.db.Prepare(`
 		insert into book (id, title, author, pages, quantity, created_at) 
@@ -47,17 +47,34 @@ func (r *MySQLRepo) Create(e *Book) (entity.ID, error) {
 	return e.ID, nil
 }
 
-//Get an user
+//Get a book
 func (r *MySQLRepo) Get(id entity.ID) (*Book, error) {
-	return nil, nil
+	stmt, err := r.db.Prepare(`select id, title, author, pages, quantity, created_at from book where id = ?`)
+	if err != nil {
+		return nil, err
+	}
+	var b Book
+	rows, err := stmt.Query(id)
+	if err != nil {
+		return nil, err
+	}
+	for rows.Next() {
+		err = rows.Scan(&b.ID, &b.Title, &b.Author, &b.Pages, &b.Quantity, &b.CreatedAt)
+	}
+	return &b, nil
 }
 
-//Update an user
+//Update a book
 func (r *MySQLRepo) Update(e *Book) error {
+	e.UpdatedAt = time.Now()
+	_, err := r.db.Exec("update book set title = ?, author = ?, pages = ?, quantity = ?, updated_at = ? where id = ?", e.Title, e.Author, e.Pages, e.Quantity, e.UpdatedAt.Format("2006-01-02"), e.ID)
+	if err != nil {
+		return err
+	}
 	return nil
 }
 
-//Search users
+//Search books
 func (r *MySQLRepo) Search(query string) ([]*Book, error) {
 	stmt, err := r.db.Prepare(`select id, title, author, pages, quantity, created_at from book where title like ?`)
 	if err != nil {
@@ -82,7 +99,7 @@ func (r *MySQLRepo) Search(query string) ([]*Book, error) {
 	return books, nil
 }
 
-//List users
+//List books
 func (r *MySQLRepo) List() ([]*Book, error) {
 	stmt, err := r.db.Prepare(`select id, title, author, pages, quantity, created_at from book`)
 	if err != nil {
@@ -107,7 +124,11 @@ func (r *MySQLRepo) List() ([]*Book, error) {
 	return books, nil
 }
 
-//Delete an user
+//Delete a book
 func (r *MySQLRepo) Delete(id entity.ID) error {
+	_, err := r.db.Exec("delete from book where id = ?", id)
+	if err != nil {
+		return err
+	}
 	return nil
 }