chore: GPL-3.0 license propagated into *.go files in backend

feat: config variables for password requirements;
feat: util function for validating passwords

backend/cmd/main.go

@@ -1,7 +1,24 @@
+// Copyright (c) 2025 Nikolai Papin
+// 
+// This file is part of Easywish
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 // @title           Easywish client API
 // @version         1.0
 // @description     Easy and feature-rich wishlist.
-// @license.name  	GPL 3.0
+// @license.name  	GPL-3.0
 
 // @BasePath  			/api/
 // @Schemes					http
@@ -20,6 +37,7 @@ import (
 
 	"github.com/gin-gonic/gin"
 	"go.uber.org/fx"
+	"go.uber.org/zap"
 
 	"easywish/config"
 	docs "easywish/docs"
@@ -42,6 +60,7 @@ func main() {
 	fx.New(	
 		fx.Provide(
 			logger.NewLogger,
+			logger.NewSyncLogger,
 			gin.Default,
 		),
 		database.Module,
@@ -49,7 +68,7 @@ func main() {
 		controllers.Module,
 		routes.Module,
 
-		fx.Invoke(func(lc fx.Lifecycle, router *gin.Engine) {
+		fx.Invoke(func(lc fx.Lifecycle, router *gin.Engine, syncLogger *logger.SyncLogger) {
 
 			// Swagger
 			docs.SwaggerInfo.Schemes = []string{"http"}
@@ -65,6 +84,7 @@ func main() {
 				OnStart: func(ctx context.Context) error {
 					go func() {
 						if err := server.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+							syncLogger.Fatal("Server failed", zap.Error(err))
 						}
 					}()
 					return nil
@@ -72,11 +92,18 @@ func main() {
 				OnStop: func(ctx context.Context) error {
 					shutdownCtx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
 					defer cancel()
-					return server.Shutdown(shutdownCtx)
+
+					if err := server.Shutdown(shutdownCtx); err != nil {
+						syncLogger.Error("Server shutdown error", zap.Error(err))
+					}
+
+					if err := syncLogger.Close(); err != nil {
+						syncLogger.Error("Logger sync error", zap.Error(err))
+					}
+					return nil
 				},
 			})
 		}),
 
   ).Run()
 }
-

backend/config/config.go

@@ -1,3 +1,20 @@
+// Copyright (c) 2025 Nikolai Papin
+// 
+// This file is part of Easywish
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package config
 
 import (
@@ -8,30 +25,47 @@ import (
 )
 
 type Config struct {
-	Hostname     	string 	`mapstructure:"HOSTNAME"`
+	Hostname     					string 	`mapstructure:"HOSTNAME"`
-	Port         	string 	`mapstructure:"PORT"`
+	Port         					string 	`mapstructure:"PORT"`
-	DatabaseUrl  	string 	`mapstructure:"POSTGRES_URL"`
+
-	RedisUrl     	string 	`mapstructure:"REDIS_URL"`
+	DatabaseUrl  					string 	`mapstructure:"POSTGRES_URL"`
-	MinioUrl     	string 	`mapstructure:"MINIO_URL"`
+	RedisUrl     					string 	`mapstructure:"REDIS_URL"`
-	JwtAlgorithm 	string 	`mapstructure:"JWT_ALGORITHM"`
+	MinioUrl     					string 	`mapstructure:"MINIO_URL"`
-	JwtSecret    	string 	`mapstructure:"JWT_SECRET"`
+
-	JwtIssuer    	string 	`mapstructure:"JWT_ISSUER"`
+	JwtAlgorithm 					string 	`mapstructure:"JWT_ALGORITHM"`
-	JwtAudience  	string 	`mapstructure:"JWT_AUDIENCE"`
+	JwtSecret    					string 	`mapstructure:"JWT_SECRET"`
-	JwtExpAccess 	int 		`mapstructure:"JWT_EXP_ACCESS"`
+	JwtIssuer    					string 	`mapstructure:"JWT_ISSUER"`
-	JwtExpRefresh int 		`mapstructure:"JWT_EXP_REFRESH"`
+	JwtAudience  					string 	`mapstructure:"JWT_AUDIENCE"`
-	Environment  	string 	`mapstructure:"ENVIRONMENT"`
+	JwtExpAccess 					int 		`mapstructure:"JWT_EXP_ACCESS"`
+	JwtExpRefresh 				int 		`mapstructure:"JWT_EXP_REFRESH"`
+
+	PasswordCheckLength 	bool		`mapstructure:"PASSWORD_CHECK_LENGTH"`
+	PasswordCheckNumbers	bool		`mapstructure:"PASSWORD_CHECK_NUMBERS"`
+	PasswordCheckCases   	bool		`mapstructure:"PASSWORD_CHECK_CASES"`
+	PasswordCheckSymbols 	bool		`mapstructure:"PASSWORD_CHECK_SYMBOLS"`
+	PasswordCheckLeaked 	bool		`mapstructure:"PASSWORD_CHECK_LEAKED"`
+
+	Environment  					string 	`mapstructure:"ENVIRONMENT"`
 }
 
 func Load() (*Config, error) {
 
 	viper.SetDefault("HOSTNAME", "localhost")
 	viper.SetDefault("PORT", "8080")
+
 	viper.SetDefault("JWT_ALGORITHM", "HS256")
 	viper.SetDefault("JWT_SECRET", "default_jwt_secret_please_change")
 	viper.SetDefault("JWT_EXP_ACCESS", 5)
 	viper.SetDefault("JWT_EXP_REFRESH", 10080)
 	viper.SetDefault("JWT_AUDIENCE", "easywish")
 	viper.SetDefault("JWT_ISSUER", "easywish")
+
+	viper.SetDefault("PASSWORD_CHECK_LENGTH", true)
+	viper.SetDefault("PASSWORD_CHECK_NUMBERS", false)
+	viper.SetDefault("PASSWORD_CHECK_CASES", false)
+	viper.SetDefault("PASSWORD_CHECK_SYMBOLS", false)
+	viper.SetDefault("PASSWORD_CHECK_LEAKED", false)
+
 	viper.SetDefault("ENVIRONMENT", "production")
 
 	viper.AutomaticEnv()
@@ -39,18 +73,28 @@ func Load() (*Config, error) {
 	// Viper's AutomaticEnv() expects lowercase keys for unmarshalling into structs by default, 
 	// while the environment variables and struct tags are in uppercase. 
 	// Here's the stupidity we have to do to fix it:
+
 	viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
 	viper.BindEnv("HOSTNAME")
 	viper.BindEnv("PORT")
+
 	viper.BindEnv("POSTGRES_URL")
 	viper.BindEnv("REDIS_URL")
 	viper.BindEnv("MINIO_URL")
+
 	viper.BindEnv("JWT_ALGORITHM")
 	viper.BindEnv("JWT_SECRET")
 	viper.BindEnv("JWT_ISSUER")
 	viper.BindEnv("JWT_AUDIENCE")
 	viper.BindEnv("JWT_EXP_ACCESS")
 	viper.BindEnv("JWT_EXP_REFRESH")
+
+	viper.BindEnv("PASSWORD_CHECK_LENGTH")
+	viper.BindEnv("PASSWORD_CHECK_NUMBERS")
+	viper.BindEnv("PASSWORD_CHECK_CASES")
+	viper.BindEnv("PASSWORD_CHECK_SYMBOLS")
+	viper.BindEnv("PASSWORD_CHECK_LEAKED")
+
 	viper.BindEnv("ENVIRONMENT")
 
 	required := []string{

backend/docs/docs.go

@@ -299,6 +299,10 @@ const docTemplate = `{
         },
         "models.LoginRequest": {
             "type": "object",
+            "required": [
+                "password",
+                "username"
+            ],
             "properties": {
                 "password": {
                     "type": "string"
@@ -324,6 +328,10 @@ const docTemplate = `{
         },
         "models.RegistrationBeginRequest": {
             "type": "object",
+            "required": [
+                "password",
+                "username"
+            ],
             "properties": {
                 "email": {
                     "type": "string"
@@ -333,7 +341,9 @@ const docTemplate = `{
                     "type": "string"
                 },
                 "username": {
-                    "type": "string"
+                    "type": "string",
+                    "maxLength": 20,
+                    "minLength": 3
                 }
             }
         }

backend/docs/swagger.json

@@ -295,6 +295,10 @@
         },
         "models.LoginRequest": {
             "type": "object",
+            "required": [
+                "password",
+                "username"
+            ],
             "properties": {
                 "password": {
                     "type": "string"
@@ -320,6 +324,10 @@
         },
         "models.RegistrationBeginRequest": {
             "type": "object",
+            "required": [
+                "password",
+                "username"
+            ],
             "properties": {
                 "email": {
                     "type": "string"
@@ -329,7 +337,9 @@
                     "type": "string"
                 },
                 "username": {
-                    "type": "string"
+                    "type": "string",
+                    "maxLength": 20,
+                    "minLength": 3
                 }
             }
         }

backend/docs/swagger.yaml

@@ -13,6 +13,9 @@ definitions:
         type: string
       username:
         type: string
+    required:
+    - password
+    - username
     type: object
   models.LoginResponse:
     properties:
@@ -29,7 +32,12 @@ definitions:
         description: 'TODO: password checking'
         type: string
       username:
+        maxLength: 20
+        minLength: 3
         type: string
+    required:
+    - password
+    - username
     type: object
 info:
   contact: {}

backend/internal/controllers/account.go

@@ -1,3 +1,20 @@
+// Copyright (c) 2025 Nikolai Papin
+// 
+// This file is part of Easywish
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package controllers
 
 import (
@@ -15,4 +32,3 @@ import (
 func ChangePassword(c *gin.Context) {
 	c.Status(http.StatusNotImplemented)
 }
-

backend/internal/controllers/auth.go

@@ -1,3 +1,20 @@
+// Copyright (c) 2025 Nikolai Papin
+// 
+// This file is part of Easywish
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package controllers
 
 import (

backend/internal/controllers/profile.go

@@ -1,3 +1,20 @@
+// Copyright (c) 2025 Nikolai Papin
+// 
+// This file is part of Easywish
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package controllers
 
 import (

backend/internal/controllers/router.go

@@ -1,3 +1,20 @@
+// Copyright (c) 2025 Nikolai Papin
+// 
+// This file is part of Easywish
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package controllers
 
 import (

backend/internal/controllers/service.go

@@ -1,3 +1,20 @@
+// Copyright (c) 2025 Nikolai Papin
+// 
+// This file is part of Easywish
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package controllers
 
 import (

backend/internal/controllers/setup.go

@@ -1,3 +1,20 @@
+// Copyright (c) 2025 Nikolai Papin
+// 
+// This file is part of Easywish
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package controllers
 
 import (

backend/internal/database/dbContext.go

@@ -1,3 +1,20 @@
+// Copyright (c) 2025 Nikolai Papin
+// 
+// This file is part of Easywish
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package database
 
 import (

backend/internal/database/helper.go

@@ -0,0 +1,100 @@
+// Copyright (c) 2025 Nikolai Papin
+// 
+// This file is part of Easywish
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package database
+
+import (
+	"context"
+
+	"github.com/jackc/pgx/v5"
+)
+
+type DbHelperTransaction interface {
+	Commit() error
+	Rollback() error
+}
+
+type DbHelper struct {
+	CTX       context.Context
+	Queries   Queries
+}
+
+type dbHelperTransactionImpl struct {
+	CTX       context.Context
+	TXlessQueries   Queries
+	TX        pgx.Tx
+	TXQueries Queries
+}
+
+func NewDbHelper(dbContext DbContext) DbHelper {
+
+	ctx := context.Background()
+	queries := New(dbContext)
+
+	return DbHelper{
+		CTX:     ctx,
+		Queries: *queries,
+	}
+}
+
+func NewDbHelperTransaction(dbContext DbContext) (DbHelperTransaction, *dbHelperTransactionImpl, error) {
+
+	ctx := context.Background()
+	queries := New(dbContext)
+	tx, err := dbContext.BeginTx(ctx)
+
+	if err != nil {
+		return nil, nil, err
+	}
+
+	txQueries := queries.WithTx(tx)
+
+	obj := &dbHelperTransactionImpl{
+		CTX:       ctx,
+		TXlessQueries:   *queries,
+		TX:        tx,
+		TXQueries: *txQueries,
+	}
+
+	return obj, obj, nil
+}
+
+// Commit implements DbHelperTransaction.
+func (d *dbHelperTransactionImpl) Commit() error {
+	errCommit := d.TX.Commit(d.CTX)
+
+	if errCommit != nil {
+		errRollback := d.TX.Rollback(d.CTX)
+
+		if errRollback != nil {
+			return errRollback 
+		}
+
+		return errCommit
+	}
+	return nil
+}
+
+// Rollback implements DbHelperTransaction.
+func (d *dbHelperTransactionImpl) Rollback() error {
+	err := d.TX.Rollback(d.CTX)
+
+	if err != nil {
+		return err
+	}
+	return nil
+}

backend/internal/database/models.go

@@ -12,11 +12,11 @@ type BannedUser struct {
 	ID         int64
 	UserID     int64
 	Date       pgtype.Timestamp
-	Reason     pgtype.Text
+	Reason     *string
 	ExpiresAt  pgtype.Timestamp
-	BannedBy   pgtype.Text
+	BannedBy   *string
-	Pardoned   pgtype.Bool
+	Pardoned   *bool
-	PardonedBy pgtype.Text
+	PardonedBy *string
 }
 
 type ConfirmationCode struct {
@@ -25,17 +25,17 @@ type ConfirmationCode struct {
 	CodeType  int32
 	CodeHash  string
 	ExpiresAt pgtype.Timestamp
-	Used      pgtype.Bool
+	Used      *bool
-	Deleted   pgtype.Bool
+	Deleted   *bool
 }
 
 type LoginInformation struct {
 	ID                 int64
 	UserID             int64
-	Email              pgtype.Text
+	Email              *string
 	PasswordHash       string
-	TotpEncrypted      pgtype.Text
+	TotpEncrypted      *string
-	Email2faEnabled    pgtype.Bool
+	Email2faEnabled    *bool
 	PasswordChangeDate pgtype.Timestamp
 }
 
@@ -43,41 +43,41 @@ type Profile struct {
 	ID        int64
 	UserID    int64
 	Name      string
-	Bio       pgtype.Text
+	Bio       *string
-	AvatarUrl pgtype.Text
+	AvatarUrl *string
 	Birthday  pgtype.Timestamp
-	Color     pgtype.Text
+	Color     *string
-	ColorGrad pgtype.Text
+	ColorGrad *string
 }
 
 type ProfileSetting struct {
 	ID                       int64
 	ProfileID                int64
-	HideFulfilled            pgtype.Bool
+	HideFulfilled            *bool
-	HideProfileDetails       pgtype.Bool
+	HideProfileDetails       *bool
-	HideForUnauthenticated   pgtype.Bool
+	HideForUnauthenticated   *bool
-	HideBirthday             pgtype.Bool
+	HideBirthday             *bool
-	HideDates                pgtype.Bool
+	HideDates                *bool
-	Captcha                  pgtype.Bool
+	Captcha                  *bool
-	FollowersOnlyInteraction pgtype.Bool
+	FollowersOnlyInteraction *bool
 }
 
 type Session struct {
 	ID           int64
 	UserID       int64
 	Guid         pgtype.UUID
-	Name         pgtype.Text
+	Name         *string
-	Platform     pgtype.Text
+	Platform     *string
-	LatestIp     pgtype.Text
+	LatestIp     *string
 	LoginTime    pgtype.Timestamp
 	LastSeenDate pgtype.Timestamp
-	Terminated   pgtype.Bool
+	Terminated   *bool
 }
 
 type User struct {
 	ID               int64
 	Username         string
-	Verified         pgtype.Bool
+	Verified         *bool
 	RegistrationDate pgtype.Timestamp
-	Deleted          pgtype.Bool
+	Deleted          *bool
 }

backend/internal/database/query.sql.go

@@ -19,8 +19,8 @@ VALUES ( $1, $2, $3, $4) RETURNING id, user_id, date, reason, expires_at, banned
 type CreateBannedUserParams struct {
 	UserID    int64
 	ExpiresAt pgtype.Timestamp
-	Reason    pgtype.Text
+	Reason    *string
-	BannedBy  pgtype.Text
+	BannedBy  *string
 }
 
 func (q *Queries) CreateBannedUser(ctx context.Context, arg CreateBannedUserParams) (BannedUser, error) {
@@ -45,24 +45,18 @@ func (q *Queries) CreateBannedUser(ctx context.Context, arg CreateBannedUserPara
 }
 
 const createConfirmationCode = `-- name: CreateConfirmationCode :one
-INSERT INTO confirmation_codes(user_id, code_type, code_hash, expires_at)
+INSERT INTO confirmation_codes(user_id, code_type, code_hash)
-VALUES ($1, $2, crypt($3, gen_salt('bf')), $4) RETURNING id, user_id, code_type, code_hash, expires_at, used, deleted
+VALUES ($1, $2, crypt($3::text, gen_salt('bf'))) RETURNING id, user_id, code_type, code_hash, expires_at, used, deleted
 `
 
 type CreateConfirmationCodeParams struct {
-	UserID    int64
+	UserID   int64
-	CodeType  int32
+	CodeType int32
-	Crypt     string
+	Code     string
-	ExpiresAt pgtype.Timestamp
 }
 
 func (q *Queries) CreateConfirmationCode(ctx context.Context, arg CreateConfirmationCodeParams) (ConfirmationCode, error) {
-	row := q.db.QueryRow(ctx, createConfirmationCode,
+	row := q.db.QueryRow(ctx, createConfirmationCode, arg.UserID, arg.CodeType, arg.Code)
-		arg.UserID,
-		arg.CodeType,
-		arg.Crypt,
-		arg.ExpiresAt,
-	)
 	var i ConfirmationCode
 	err := row.Scan(
 		&i.ID,
@@ -83,7 +77,7 @@ VALUES ( $1, $2, crypt($3::text, gen_salt('bf')) ) RETURNING id, user_id, email,
 
 type CreateLoginInformationParams struct {
 	UserID   int64
-	Email    pgtype.Text
+	Email    *string
 	Password string
 }
 
@@ -110,11 +104,11 @@ VALUES ($1, $2, $3, $4, $5, $6, $7) RETURNING id, user_id, name, bio, avatar_url
 type CreateProfileParams struct {
 	UserID    int64
 	Name      string
-	Bio       pgtype.Text
+	Bio       *string
 	Birthday  pgtype.Timestamp
-	AvatarUrl pgtype.Text
+	AvatarUrl *string
-	Color     pgtype.Text
+	Color     *string
-	ColorGrad pgtype.Text
+	ColorGrad *string
 }
 
 func (q *Queries) CreateProfile(ctx context.Context, arg CreateProfileParams) (Profile, error) {
@@ -170,9 +164,9 @@ VALUES ($1, $2, $3, $4) RETURNING id, user_id, guid, name, platform, latest_ip,
 
 type CreateSessionParams struct {
 	UserID   int64
-	Name     pgtype.Text
+	Name     *string
-	Platform pgtype.Text
+	Platform *string
-	LatestIp pgtype.Text
+	LatestIp *string
 }
 
 func (q *Queries) CreateSession(ctx context.Context, arg CreateSessionParams) (Session, error) {
@@ -331,18 +325,18 @@ WHERE users.username = $1 AND ($2 IS FALSE OR profile_settings.hide_for_unauthen
 
 type GetProfileByUsernameRestrictedParams struct {
 	Username string
-	Column2  pgtype.Bool
+	Column2  *bool
 }
 
 type GetProfileByUsernameRestrictedRow struct {
 	Username           string
 	Name               string
 	Birthday           pgtype.Timestamp
-	Bio                pgtype.Text
+	Bio                *string
-	AvatarUrl          pgtype.Text
+	AvatarUrl          *string
-	Color              pgtype.Text
+	Color              *string
-	ColorGrad          pgtype.Text
+	ColorGrad          *string
-	HideProfileDetails pgtype.Bool
+	HideProfileDetails *bool
 }
 
 func (q *Queries) GetProfileByUsernameRestricted(ctx context.Context, arg GetProfileByUsernameRestrictedParams) (GetProfileByUsernameRestrictedRow, error) {
@@ -405,17 +399,17 @@ LIMIT 20 OFFSET 20 * $1
 `
 
 type GetProfilesRestrictedParams struct {
-	Column1 pgtype.Int4
+	Column1 *int32
-	Column2 pgtype.Bool
+	Column2 *bool
 }
 
 type GetProfilesRestrictedRow struct {
 	Username           string
 	Name               string
-	AvatarUrl          pgtype.Text
+	AvatarUrl          *string
-	Color              pgtype.Text
+	Color              *string
-	ColorGrad          pgtype.Text
+	ColorGrad          *string
-	HideProfileDetails pgtype.Bool
+	HideProfileDetails *bool
 }
 
 func (q *Queries) GetProfilesRestricted(ctx context.Context, arg GetProfilesRestrictedParams) ([]GetProfilesRestrictedRow, error) {
@@ -558,7 +552,7 @@ type GetUserByLoginCredentialsRow struct {
 	ID            int64
 	Username      string
 	PasswordHash  string
-	TotpEncrypted pgtype.Text
+	TotpEncrypted *string
 }
 
 func (q *Queries) GetUserByLoginCredentials(ctx context.Context, arg GetUserByLoginCredentialsParams) (GetUserByLoginCredentialsRow, error) {
@@ -654,11 +648,11 @@ WHERE id = $1
 
 type UpdateBannedUserParams struct {
 	ID         int64
-	Reason     pgtype.Text
+	Reason     *string
 	ExpiresAt  pgtype.Timestamp
-	BannedBy   pgtype.Text
+	BannedBy   *string
-	Pardoned   pgtype.Bool
+	Pardoned   *bool
-	PardonedBy pgtype.Text
+	PardonedBy *string
 }
 
 func (q *Queries) UpdateBannedUser(ctx context.Context, arg UpdateBannedUserParams) error {
@@ -681,8 +675,8 @@ WHERE id = $1
 
 type UpdateConfirmationCodeParams struct {
 	ID      int64
-	Used    pgtype.Bool
+	Used    *bool
-	Deleted pgtype.Bool
+	Deleted *bool
 }
 
 func (q *Queries) UpdateConfirmationCode(ctx context.Context, arg UpdateConfirmationCodeParams) error {
@@ -699,10 +693,10 @@ WHERE users.username = $1 AND login_informations.user_id = users.id
 
 type UpdateLoginInformationByUsernameParams struct {
 	Username           string
-	Email              pgtype.Text
+	Email              *string
 	Password           string
-	TotpEncrypted      pgtype.Text
+	TotpEncrypted      *string
-	Email2faEnabled    pgtype.Bool
+	Email2faEnabled    *bool
 	PasswordChangeDate pgtype.Timestamp
 }
 
@@ -728,11 +722,11 @@ WHERE username = $1
 type UpdateProfileByUsernameParams struct {
 	Username  string
 	Name      string
-	Bio       pgtype.Text
+	Bio       *string
 	Birthday  pgtype.Timestamp
-	AvatarUrl pgtype.Text
+	AvatarUrl *string
-	Color     pgtype.Text
+	Color     *string
-	ColorGrad pgtype.Text
+	ColorGrad *string
 }
 
 func (q *Queries) UpdateProfileByUsername(ctx context.Context, arg UpdateProfileByUsernameParams) error {
@@ -763,13 +757,13 @@ WHERE id = $1
 
 type UpdateProfileSettingsParams struct {
 	ID                       int64
-	HideFulfilled            pgtype.Bool
+	HideFulfilled            *bool
-	HideProfileDetails       pgtype.Bool
+	HideProfileDetails       *bool
-	HideForUnauthenticated   pgtype.Bool
+	HideForUnauthenticated   *bool
-	HideBirthday             pgtype.Bool
+	HideBirthday             *bool
-	HideDates                pgtype.Bool
+	HideDates                *bool
-	Captcha                  pgtype.Bool
+	Captcha                  *bool
-	FollowersOnlyInteraction pgtype.Bool
+	FollowersOnlyInteraction *bool
 }
 
 func (q *Queries) UpdateProfileSettings(ctx context.Context, arg UpdateProfileSettingsParams) error {
@@ -794,12 +788,12 @@ WHERE id = $1
 
 type UpdateSessionParams struct {
 	ID           int64
-	Name         pgtype.Text
+	Name         *string
-	Platform     pgtype.Text
+	Platform     *string
-	LatestIp     pgtype.Text
+	LatestIp     *string
 	LoginTime    pgtype.Timestamp
 	LastSeenDate pgtype.Timestamp
-	Terminated   pgtype.Bool
+	Terminated   *bool
 }
 
 func (q *Queries) UpdateSession(ctx context.Context, arg UpdateSessionParams) error {
@@ -823,8 +817,8 @@ WHERE id = $1
 
 type UpdateUserParams struct {
 	ID       int64
-	Verified pgtype.Bool
+	Verified *bool
-	Deleted  pgtype.Bool
+	Deleted  *bool
 }
 
 func (q *Queries) UpdateUser(ctx context.Context, arg UpdateUserParams) error {
@@ -840,8 +834,8 @@ WHERE username = $1
 
 type UpdateUserByUsernameParams struct {
 	Username string
-	Verified pgtype.Bool
+	Verified *bool
-	Deleted  pgtype.Bool
+	Deleted  *bool
 }
 
 func (q *Queries) UpdateUserByUsername(ctx context.Context, arg UpdateUserByUsernameParams) error {

backend/internal/database/setup.go

@@ -1,3 +1,20 @@
+// Copyright (c) 2025 Nikolai Papin
+// 
+// This file is part of Easywish
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package database 
 
 import (
@@ -9,5 +26,3 @@ var Module = fx.Module("database",
 			NewDbContext,
     ),
 )
-
-

backend/internal/errors/auth.go

@@ -1,3 +1,20 @@
+// Copyright (c) 2025 Nikolai Papin
+// 
+// This file is part of Easywish
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package errors
 
 import (

backend/internal/errors/general.go

@@ -1,3 +1,20 @@
+// Copyright (c) 2025 Nikolai Papin
+// 
+// This file is part of Easywish
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package errors
 
 import (
@@ -8,4 +25,3 @@ var (
 	ErrNotImplemented = errors.New("Feature is not implemented")
 	ErrBadRequest = errors.New("Bad request")
 )
-

backend/internal/logger/logger.go

@@ -1,3 +1,20 @@
+// Copyright (c) 2025 Nikolai Papin
+// 
+// This file is part of Easywish
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package logger
 
 import (
@@ -8,40 +25,36 @@ import (
 	"go.uber.org/zap"
 )
 
-type Logger interface {
-	Get() *zap.Logger	
-	Sync() error
-}
-
-type loggerImpl struct {
-}
-
-func NewLogger() Logger {
-	return &loggerImpl{}
-}
-
 var (
-	logger *zap.Logger
+	instance *zap.Logger
-	once   sync.Once
+	once     sync.Once
 )
 
-func (l *loggerImpl) Get() *zap.Logger {
+func NewLogger() *zap.Logger {
 	once.Do(func() {
-		var err error
 		cfg := config.GetConfig()
+		var err error
 
 		if cfg.Environment == "production" {
-			logger, err = zap.NewProduction()
+			instance, err = zap.NewProduction()
 		} else {
-			logger, err = zap.NewDevelopment()
+			instance, err = zap.NewDevelopment()
 		}
 		if err != nil {
-			panic(err)
+			panic("failed to initialize logger: " + err.Error())
 		}
 	})
-	return logger
+	return instance
 }
 
-func (l *loggerImpl) Sync() error {
+type SyncLogger struct {
-	return logger.Sync()
+	*zap.Logger
+}
+
+func NewSyncLogger(logger *zap.Logger) *SyncLogger {
+	return &SyncLogger{logger}
+}
+
+func (s *SyncLogger) Close() error {
+	return s.Sync()
 }

backend/internal/middleware/auth.go

@@ -1,3 +1,20 @@
+// Copyright (c) 2025 Nikolai Papin
+// 
+// This file is part of Easywish
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package middleware
 
 import (

backend/internal/models/auth.go

@@ -1,31 +1,50 @@
+// Copyright (c) 2025 Nikolai Papin
+// 
+// This file is part of Easywish
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package models
 
 type Tokens struct {
-	AccessToken string `json:"access_token"`
+	AccessToken string  `json:"access_token"`
 	RefreshToken string `json:"refresh_token"`
 }
 
 type RegistrationBeginRequest struct {
-	Username string `json:"username"`
+	Username string  `json:"username" binding:"required,min=3,max=20"`
-	Email		 *string `json:"email"`
+	Email		 *string `json:"email" binding:"email"`
-	Password string `json:"password"` // TODO: password checking
+	Password string  `json:"password" binding:"required,password"` // TODO: password checking
 }
 
+// TODO: length check
 type RegistrationCompleteRequest struct {
-	Username 					string `json:"username"`
+	Username 					string  `json:"username" binding:"required"`
-	VerificationCode	string `json:"verification_code"`
+	VerificationCode	string  `json:"verification_code" binding:"required"`
-	Name							string `json:"name"`
+	Name							string  `json:"name" binding:"required,max=75"`
 	Birthday					*string `json:"birthday"`
-	AvatarUrl					*string `json:"avatar_url"`
+	AvatarUrl					*string `json:"avatar_url" binding:"http_url,max=255"`
 }
 
 type RegistrationCompleteResponse struct {
 	Tokens
 }
 
+// TODO: length check
 type LoginRequest struct {
-	Username string `json:"username"`
+	Username string `json:"username" binding:"required"`
-	Password string `json:"password"`
+	Password string `json:"password" binding:"required"`
 	TOTP 		 *string `json:"totp"`
 }
 
@@ -33,8 +52,9 @@ type LoginResponse struct {
 	Tokens
 }
 
+// TODO: length check
 type RefreshRequest struct {
-	RefreshToken string `json:"refresh_token"`
+	RefreshToken string `json:"refresh_token" binding:"required"`
 }
 
 type RefreshResponse struct {

backend/internal/routes/router.go

@@ -1,3 +1,20 @@
+// Copyright (c) 2025 Nikolai Papin
+// 
+// This file is part of Easywish
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package routes
 
 import (

backend/internal/routes/setup.go

@@ -1,3 +1,20 @@
+// Copyright (c) 2025 Nikolai Papin
+// 
+// This file is part of Easywish
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package routes
 
 import (

backend/internal/services/auth.go

@@ -1,12 +1,28 @@
+// Copyright (c) 2025 Nikolai Papin
+// 
+// This file is part of Easywish
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package services
 
 import (
-	"context"
 	"easywish/internal/database"
 	errs "easywish/internal/errors"
-	"easywish/internal/logger"
 	"easywish/internal/models"
 	"easywish/internal/utils"
+	"easywish/internal/utils/enums"
 
 	"go.uber.org/zap"
 )
@@ -19,25 +35,59 @@ type AuthService interface {
 }
 
 type authServiceImpl struct {
-	log logger.Logger
+	log *zap.Logger
 	dbctx database.DbContext
 }
 
-func NewAuthService(_log logger.Logger, _dbctx database.DbContext) AuthService {
+func NewAuthService(_log *zap.Logger, _dbctx database.DbContext) AuthService {
 	return &authServiceImpl{log: _log, dbctx: _dbctx}
 }
 
 func (a *authServiceImpl) RegistrationBegin(request models.RegistrationBeginRequest) (bool, error) {
 
-	ctx := context.Background() 
+	var user database.User
-	queries := database.New(a.dbctx)
+	var generatedCode string
-	user, err := queries.CreateUser(ctx, request.Username) // TODO: validation
 
-  if err != nil {
+	helper, db, _ := database.NewDbHelperTransaction(a.dbctx)
-		a.log.Get().Error("Failed to add user to database", zap.Error(err))
+  defer helper.Rollback()
+
+	var err error
+
+	if user, err = db.TXQueries.CreateUser(db.CTX, request.Username); err != nil { // TODO: validation
+		a.log.Error("Failed to add user to database", zap.Error(err))
 		return false, errs.ErrServerError
 	}
-	a.log.Get().Info("Registered a new user", zap.String("username", user.Username))
+
+	a.log.Info("Registraion of a new user", zap.String("username", user.Username), zap.Int64("id", user.ID))
+
+	if _, err = db.TXQueries.CreateLoginInformation(db.CTX, database.CreateLoginInformationParams{
+		UserID: user.ID,
+		Email: request.Email,
+		Password: request.Password, // Hashed in database
+	}); err != nil {
+		a.log.Error("Failed to add login information for user to database", zap.Error(err))
+		return false, errs.ErrServerError
+	}
+
+	if generatedCode, err = utils.GenerateSecure6DigitNumber(); err != nil {
+		a.log.Error("Failed to generate a registration code", zap.Error(err))
+		return false, errs.ErrServerError
+	}
+
+	if _, err = db.TXQueries.CreateConfirmationCode(db.CTX, database.CreateConfirmationCodeParams{
+     UserID: user.ID,
+		 CodeType: int32(enums.RegistrationCodeType),
+		 Code: generatedCode, // Hashed in database
+	}); err != nil {
+		a.log.Error("Failed to add registration code to database", zap.Error(err))
+		return false, errs.ErrServerError
+	}
+
+	a.log.Info("Registered a new user", zap.String("username", user.Username))
+
+	helper.Commit()
+
+	a.log.Debug("Declated registration code for a new user", zap.String("username", user.Username), zap.String("code", generatedCode))
 
 	// TODO: Send verification email
 

backend/internal/services/setup.go

@@ -1,3 +1,20 @@
+// Copyright (c) 2025 Nikolai Papin
+// 
+// This file is part of Easywish
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package services
 
 import (
@@ -9,4 +26,3 @@ var Module = fx.Module("services",
 			NewAuthService,
     ),
 )
-

backend/internal/utils/db.go

@@ -1,3 +1,20 @@
+// Copyright (c) 2025 Nikolai Papin
+// 
+// This file is part of Easywish
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package utils
 
 import (

backend/internal/utils/enums/enums.go

@@ -0,0 +1,25 @@
+// Copyright (c) 2025 Nikolai Papin
+// 
+// This file is part of Easywish
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package enums
+
+type ConfirmationCodeType int32
+
+const (
+	RegistrationCodeType ConfirmationCodeType = iota
+	PasswordResetCodeType
+)

backend/internal/utils/jwt.go

@@ -1,3 +1,20 @@
+// Copyright (c) 2025 Nikolai Papin
+// 
+// This file is part of Easywish
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package utils
 
 import (

backend/internal/utils/security.go

@@ -0,0 +1,80 @@
+// Copyright (c) 2025 Nikolai Papin
+// 
+// This file is part of Easywish
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
+// the GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package utils
+
+import (
+	"crypto/rand"
+	"easywish/config"
+	"errors"
+	"fmt"
+	"io"
+	"regexp"
+)
+
+func GenerateSecure6DigitNumber() (string, error) {
+	// Generate a random number between 0 and 999999 (inclusive)
+	// This ensures we get a 6-digit number, including those starting with 0
+	max := 1000000 // Upper bound (exclusive)
+	b := make([]byte, 4) // A 4-byte slice is sufficient for a 32-bit integer
+
+	if _, err := io.ReadFull(rand.Reader, b); err != nil {
+		return "", fmt.Errorf("failed to read random bytes: %w", err)
+	}
+
+	// Convert bytes to an integer
+	// We use a simple modulo operation to get a number within our desired range.
+	// While this introduces a slight bias for very large ranges, for 1,000,000
+	// it's negligible and simpler than more complex methods like rejection sampling.
+	num := int(uint32(b[0])<<24 | uint32(b[1])<<16 | uint32(b[2])<<8 | uint32(b[3])) % max
+
+	return fmt.Sprintf("%06d", num), nil
+}
+
+func ValidatePassword(password string) error {
+	cfg := config.GetConfig()
+	
+	if cfg.PasswordCheckLength {
+		passwordLength := len(password); if passwordLength < 8 || passwordLength > 100 {
+      return errors.New("Password must be between 8 and 100 characters")
+		}  
+	}
+
+	if cfg.PasswordCheckNumbers {
+		numbersPresent := regexp.MustCompile(`[0-9]`).MatchString(password); if !numbersPresent {
+			return errors.New("Password must contain at least 1 number")
+		}
+	}
+
+	if cfg.PasswordCheckCases {
+		differentCasesPresent := regexp.MustCompile(`(?=.*[a-z])(?=.*[A-Z])`).MatchString(password); if !differentCasesPresent {
+			return errors.New("Password must have uppercase and lowercase characters")
+		}
+	}
+
+	if cfg.PasswordCheckSymbols {
+		symbolsPresent := regexp.MustCompile(`[.,/;'[\]\-=_+{}:"<>?\/|!@#$%^&*()~]`).MatchString(password); if !symbolsPresent {
+			return errors.New("Password must contain at least one special symbol")
+		}
+	}
+
+	if cfg.PasswordCheckLeaked {
+		// TODO: implement checking leaked passwords via rockme.txt
+	}
+
+	return nil
+}

sqlc/query.sql

@@ -94,8 +94,8 @@ WHERE users.username = $1;
 --: Confirmation Code Object {{{
 
 ;-- name: CreateConfirmationCode :one
-INSERT INTO confirmation_codes(user_id, code_type, code_hash, expires_at)
+INSERT INTO confirmation_codes(user_id, code_type, code_hash)
-VALUES ($1, $2, crypt($3, gen_salt('bf')), $4) RETURNING *;
+VALUES ($1, $2, crypt(@code::text, gen_salt('bf'))) RETURNING *;
 
 ;-- name: GetConfirmationCodeByCode :one
 SELECT * FROM confirmation_codes

sqlc/sqlc.yaml

@@ -8,7 +8,7 @@ sql:
       out: "../backend/internal/database"
       sql_package: "pgx/v5"
       emit_prepared_queries: true
-      emit_interface: false
+      emit_pointers_for_null_types: true
   database:
     # managed: true
     uri: "postgresql://postgres:postgres@localhost:5432/postgres?sslmode=disable"