Add query for verification requests

Resolves #28

server/db/verificationRequests.go

@@ -0,0 +1,65 @@
+package db
+
+import (
+	"log"
+
+	"gorm.io/gorm/clause"
+)
+
+type VerificationRequest struct {
+	ID         uint   `gorm:"primaryKey"`
+	Token      string `gorm:"index"`
+	Identifier string
+	ExpiresAt  int64
+	CreatedAt  int64  `gorm:"autoCreateTime"`
+	UpdatedAt  int64  `gorm:"autoUpdateTime"`
+	Email      string `gorm:"unique"`
+}
+
+// AddVerification function to add verification record
+func (mgr *manager) AddVerification(verification VerificationRequest) (VerificationRequest, error) {
+	result := mgr.db.Clauses(clause.OnConflict{
+		Columns:   []clause.Column{{Name: "email"}},
+		DoUpdates: clause.AssignmentColumns([]string{"token", "identifier", "expires_at"}),
+	}).Create(&verification)
+	if result.Error != nil {
+		log.Println(`Error saving verification record`, result.Error)
+		return verification, result.Error
+	}
+	return verification, nil
+}
+
+func (mgr *manager) GetVerificationByToken(token string) (VerificationRequest, error) {
+	var verification VerificationRequest
+	result := mgr.db.Where("token = ?", token).First(&verification)
+
+	if result.Error != nil {
+		log.Println(`Error getting verification token:`, result.Error)
+		return verification, result.Error
+	}
+
+	return verification, nil
+}
+
+func (mgr *manager) DeleteToken(email string) error {
+	var verification VerificationRequest
+	result := mgr.db.Where("email = ?", email).Delete(&verification)
+
+	if result.Error != nil {
+		log.Println(`Error deleting token:`, result.Error)
+		return result.Error
+	}
+
+	return nil
+}
+
+// GetUsers function to get all users
+func (mgr *manager) GetVerificationRequests() ([]VerificationRequest, error) {
+	var verificationRequests []VerificationRequest
+	result := mgr.db.Find(&verificationRequests)
+	if result.Error != nil {
+		log.Println(result.Error)
+		return verificationRequests, result.Error
+	}
+	return verificationRequests, nil
+}