backend moved to separate directory

backend: deleted the old structure

go-backend/internal/database/db.go

@@ -0,0 +1,177 @@
+package database
+
+import (
+	"GoMembership/internal/constants"
+	"GoMembership/internal/models"
+	"GoMembership/pkg/logger"
+	"crypto/rand"
+	"encoding/base64"
+	"time"
+
+	"github.com/alexedwards/argon2id"
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+)
+
+var DB *gorm.DB
+
+func Open(dbPath string, adminMail string) error {
+
+	db, err := gorm.Open(sqlite.Open(dbPath), &gorm.Config{})
+	if err != nil {
+		return err
+	}
+	if err := db.AutoMigrate(
+		&models.User{},
+		&models.SubscriptionModel{},
+		&models.Membership{},
+		&models.Consent{},
+		&models.Verification{},
+		&models.Licence{},
+		&models.Category{},
+		&models.BankAccount{}); err != nil {
+		logger.Error.Fatalf("Couldn't create database: %v", err)
+		return err
+	}
+	DB = db
+
+	logger.Info.Print("Opened DB")
+
+	var categoriesCount int64
+	db.Model(&models.Category{}).Count(&categoriesCount)
+	if categoriesCount == 0 {
+		categories := createLicenceCategories()
+		for _, model := range categories {
+			result := db.Create(&model)
+			if result.Error != nil {
+				return result.Error
+			}
+		}
+	}
+
+	var subscriptionsCount int64
+	db.Model(&models.SubscriptionModel{}).Count(&subscriptionsCount)
+	subscriptionModels := createSubscriptionModels()
+	for _, model := range subscriptionModels {
+		var exists int64
+		db.
+			Model(&models.SubscriptionModel{}).
+			Where("name = ?", model.Name).
+			Count(&exists)
+		logger.Error.Printf("looked for model.name %v and found %v", model.Name, exists)
+		if exists == 0 {
+			result := db.Create(&model)
+			if result.Error != nil {
+				return result.Error
+			}
+		}
+	}
+
+	var userCount int64
+	db.Model(&models.User{}).Count(&userCount)
+	if userCount == 0 {
+		var createdModel models.SubscriptionModel
+		if err := db.First(&createdModel).Error; err != nil {
+			return err
+		}
+
+		admin, err := createAdmin(adminMail, createdModel.ID)
+		if err != nil {
+			return err
+		}
+		result := db.Session(&gorm.Session{FullSaveAssociations: true}).Create(&admin)
+		if result.Error != nil {
+			return result.Error
+		}
+	}
+
+	return nil
+}
+
+func createSubscriptionModels() []models.SubscriptionModel {
+	return []models.SubscriptionModel{
+		{
+			Name:       "Keins",
+			Details:    "Dieses Modell ist für Vereinsmitglieder, die keinen Wunsch haben, an dem Carhsharing teilzunehmen.",
+			HourlyRate: 999,
+			MonthlyFee: 0,
+		},
+	}
+}
+
+func createLicenceCategories() []models.Category {
+	return []models.Category{
+		{Name: "AM"},
+		{Name: "A1"},
+		{Name: "A2"},
+		{Name: "A"},
+		{Name: "B"},
+		{Name: "C1"},
+		{Name: "C"},
+		{Name: "D1"},
+		{Name: "D"},
+		{Name: "BE"},
+		{Name: "C1E"},
+		{Name: "CE"},
+		{Name: "D1E"},
+		{Name: "DE"},
+		{Name: "T"},
+		{Name: "L"},
+	}
+}
+
+// TODO: Landing page to create an admin
+
+func createAdmin(userMail string, subscriptionModelID uint) (*models.User, error) {
+	passwordBytes := make([]byte, 12)
+	_, err := rand.Read(passwordBytes)
+	if err != nil {
+		return nil, err
+	}
+
+	// Encode into a URL-safe base64 string
+	password := base64.URLEncoding.EncodeToString(passwordBytes)[:12]
+
+	hash, err := argon2id.CreateHash(password, argon2id.DefaultParams)
+	if err != nil {
+		return nil, err
+	}
+
+	logger.Error.Print("==============================================================")
+	logger.Error.Printf("Admin Email: %v", userMail)
+	logger.Error.Printf("Admin Password: %v", password)
+	logger.Error.Print("==============================================================")
+
+	return &models.User{
+		FirstName:   "ad",
+		LastName:    "min",
+		DateOfBirth: time.Now().AddDate(-20, 0, 0),
+		Password:    hash,
+		Address:     "Downhill 4",
+		ZipCode:     "99999",
+		City:        "TechTown",
+		Phone:       "0123455678",
+		Email:       userMail,
+		Status:      constants.ActiveStatus,
+		RoleID:      constants.Roles.Admin,
+		Membership: models.Membership{
+			Status:              constants.DisabledStatus,
+			StartDate:           time.Now(),
+			SubscriptionModelID: subscriptionModelID,
+		},
+		BankAccount: models.BankAccount{},
+		Licence: &models.Licence{
+			Status: constants.UnverifiedStatus,
+		},
+	}, nil
+	//"DE49700500000008447644", //fake
+}
+
+func Close() error {
+	logger.Info.Print("Closing  DB")
+	db, err := DB.DB()
+	if err != nil {
+		return err
+	}
+	return db.Close()
+}