From b24ffcf3f8a00aff1340ae938a946967efa372f0 Mon Sep 17 00:00:00 2001
From: Nikolai Papin <nikolai@weirdcat.ru>
Date: Sun, 3 Aug 2025 00:22:01 +0300
Subject: [PATCH] feat: birthday validation integrated into profile

---
 backend/internal/dto/profile.go       |  2 +-
 backend/internal/models/auth.go       |  2 +-
 backend/internal/services/auth.go     |  7 +++++++
 backend/internal/services/profile.go  |  1 -
 backend/internal/validation/custom.go | 17 +++++++++++++++++
 5 files changed, 26 insertions(+), 3 deletions(-)

diff --git a/backend/internal/dto/profile.go b/backend/internal/dto/profile.go
index bba4da5..46d5a26 100644
--- a/backend/internal/dto/profile.go
+++ b/backend/internal/dto/profile.go
@@ -30,7 +30,7 @@ type NewProfileDto struct {
 	Name      			string	`json:"name" binding:"required" validate:"name"`
 	Bio      				string	`json:"bio" validate:"bio"`
 	AvatarUploadID	string	`json:"avatar_upload_id" validate:"omitempty,upload_id=avatar"`
-	Birthday  			int64		`json:"birthday"`
+	Birthday  			int64		`json:"birthday" validate:"birthday_unix_milli"`
 	Color     			string	`json:"color" validate:"color_hex"`
 	ColorGrad 			string	`json:"color_grad" validate:"color_hex"`
 }
diff --git a/backend/internal/models/auth.go b/backend/internal/models/auth.go
index 365f644..ec467e5 100644
--- a/backend/internal/models/auth.go
+++ b/backend/internal/models/auth.go
@@ -32,7 +32,7 @@ type RegistrationCompleteRequest struct {
 	Username 					string  `json:"username" binding:"required" validate:"username"`
 	VerificationCode	string  `json:"verification_code" binding:"required" validate:"verification_code=reg"`
 	Name							string  `json:"name" binding:"required" validate:"name"`
-	Birthday					*string `json:"birthday"`
+	Birthday					int64 	`json:"birthday" validate:"birthday_unix_milli"`
 }
 
 type RegistrationCompleteResponse struct {
diff --git a/backend/internal/services/auth.go b/backend/internal/services/auth.go
index 04c884f..489faaa 100644
--- a/backend/internal/services/auth.go
+++ b/backend/internal/services/auth.go
@@ -35,6 +35,7 @@ import (
 	"github.com/google/uuid"
 	"github.com/jackc/pgerrcode"
 	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgtype"
 	"go.uber.org/zap"
 )
 
@@ -437,9 +438,15 @@ func (a *authServiceImpl) RegistrationComplete(cinfo dto.ClientInfo, request mod
 		return nil, errs.ErrServerError
 	}
 
+	birthdayTimestamp := pgtype.Timestamp {
+		Time: time.UnixMilli(request.Birthday),
+		Valid: true,
+	}
+
 	profile, err = db.TXQueries.CreateProfile(db.CTX, database.CreateProfileParams{
 		UserID: user.ID,
 		Name:   request.Name,
+		Birthday: birthdayTimestamp,
 	})
 
 	if err != nil {
diff --git a/backend/internal/services/profile.go b/backend/internal/services/profile.go
index c074915..39b3c8b 100644
--- a/backend/internal/services/profile.go
+++ b/backend/internal/services/profile.go
@@ -126,7 +126,6 @@ func (p *profileServiceImpl) GetProfileSettings(cinfo dto.ClientInfo) (*dto.Prof
 	return profileSettingsDto, nil
 }
 
-// XXX: no validation for timestamps' allowed ranges
 func (p *profileServiceImpl) UpdateProfile(cinfo dto.ClientInfo, newProfile dto.NewProfileDto) (bool, error) {
 	helper, db, err := database.NewDbHelperTransaction(p.dbctx); if err != nil {
 		p.log.Error(
diff --git a/backend/internal/validation/custom.go b/backend/internal/validation/custom.go
index 06ec89c..a230b19 100644
--- a/backend/internal/validation/custom.go
+++ b/backend/internal/validation/custom.go
@@ -21,6 +21,7 @@ import (
 	"easywish/config"
 	"fmt"
 	"regexp"
+	"time"
 
 	"github.com/go-playground/validator/v10"
 )
@@ -55,6 +56,22 @@ func GetCustomHandlers() []CustomValidatorHandler {
         return regexp.MustCompile(`^.{1,512}$`).MatchString(username)
 		}},
 
+		{
+			FieldName: "birthday_unix_milli",
+			Function: func(fl validator.FieldLevel) bool {
+			
+			timestamp := fl.Field().Int()
+			date := time.UnixMilli(timestamp)
+			currentDate := time.Now()
+
+			age := currentDate.Year() - date.Year()
+			if currentDate.YearDay() < date.YearDay() {
+				age--
+			}
+
+			return age >= 0 && age <= 122
+		}},
+
 		{
 			FieldName: "color_hex",
 			Function: func(fl validator.FieldLevel) bool {