initial commit

database/model.go

@@ -0,0 +1,47 @@
+package database
+
+import (
+	"fmt"
+
+	"golang.org/x/crypto/bcrypt"
+)
+
+type Model interface {
+	Id() (int, error)
+	SetId(int)
+	Saved() bool
+}
+
+type identity struct {
+	id    int
+	saved bool
+}
+
+var (
+	ErrNotSaved = fmt.Errorf("primary key id não foi salva")
+)
+
+func (p *identity) Id() (int, error) {
+	if !p.saved {
+		return 0, ErrNotSaved
+	}
+	return p.id, nil
+}
+
+func (p *identity) SetId(i int) {
+	p.id = i
+	p.saved = true
+}
+
+func (p *identity) Saved() bool {
+	return p.saved
+}
+
+func checkPasswordHash(password, hash string) error {
+	return bcrypt.CompareHashAndPassword([]byte(hash), []byte(password))
+}
+
+func HashPassword(password string) (string, error) {
+	bytes, err := bcrypt.GenerateFromPassword([]byte(password), 14)
+	return string(bytes), err
+}