Adding models, DB access, signup, login

* Created Base, Auth, User and Admin models
* Added skeleton API structure containing: User signup, User & Admin
login, authorized zones, ping tests
* Simple user signup functional
* Skeleton user login functional, no means to verify as of yet
* Added POSTMAN file

models/admin.go

@@ -0,0 +1,24 @@
+package models
+
+import (
+	"errors"
+
+	"github.com/yxzzy-wtf/gin-gonic-prepack/database"
+)
+
+type Admin struct {
+	Auth
+	Email string
+}
+
+func (a *Admin) GetJwt() (string, int) {
+	return "", 0
+}
+
+func (a *Admin) ByEmail(email string) error {
+	if err := database.Db.Where("email = ?", email).First(&a).Error; err != nil {
+		return errors.New("not found")
+	}
+
+	return nil
+}

models/auth.go

@@ -0,0 +1,43 @@
+package models
+
+import (
+	"errors"
+	"time"
+
+	"golang.org/x/crypto/bcrypt"
+)
+
+type Auth struct {
+	Base
+	PasswordHash      string
+	TwoFactorSecret   string
+	TwoFactorRecovery string
+	Verified          bool
+}
+
+func (a *Auth) SetPassword(pass string) error {
+	passHash, _ := bcrypt.GenerateFromPassword([]byte(pass), bcrypt.DefaultCost)
+	a.PasswordHash = string(passHash)
+	return nil
+}
+
+func (a *Auth) CheckPassword(pass string) error {
+	return bcrypt.CompareHashAndPassword([]byte(a.PasswordHash), []byte(pass))
+}
+
+func (a *Auth) ValidateTwoFactor(tfCode string, stamp time.Time) error {
+	if tfCode == "" && a.TwoFactorSecret != "" {
+		return errors.New("requires 2FA")
+	} else if tfCode == "" && a.TwoFactorSecret == "" {
+		return nil
+	}
+
+	//TODO two factor
+	if len(tfCode) == 6 {
+		// Test 2FA
+		return errors.New("2FA invalid")
+	} else {
+		// May be a renewal code
+		return errors.New("unlock invalid")
+	}
+}

models/base.go

@@ -0,0 +1,31 @@
+package models
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+)
+
+type Base struct {
+	Uid     uuid.UUID `gorm:"type:uuid;primary_key;"`
+	Created time.Time
+	Updated time.Time
+	Deleted time.Time `sql:"index"`
+	Tenant  uuid.UUID
+}
+
+func (b *Base) BeforeCreate(scope *gorm.DB) error {
+	b.Uid = uuid.New()
+	b.Created = time.Now()
+	return nil
+}
+
+func (b *Base) BeforeSave(tx *gorm.DB) error {
+	b.Updated = time.Now()
+	return nil
+}
+
+func (b *Base) Delete() {
+	b.Deleted = time.Now()
+}

models/user.go

@@ -0,0 +1,24 @@
+package models
+
+import (
+	"errors"
+
+	"github.com/yxzzy-wtf/gin-gonic-prepack/database"
+)
+
+type User struct {
+	Auth
+	Email string `gorm:"unique"`
+}
+
+func (u *User) GetJwt() (string, int) {
+	return "", 0
+}
+
+func (u *User) ByEmail(email string) error {
+	if err := database.Db.Where("email = ?", email).First(&u).Error; err != nil {
+		return errors.New("not found")
+	}
+
+	return nil
+}