From 4a5c42ca06f3aa2f88a0536e033e3d8fe798408a Mon Sep 17 00:00:00 2001
From: d3m0k1d <d3m0k1d1337@gmail.com>
Date: Tue, 10 Feb 2026 22:45:27 +0300
Subject: [PATCH] feat: update callback handler and repository for user

---
 backend/internal/auth/jwt.go                  |  6 ++--
 backend/internal/handlers/auth_handlers.go    | 31 ++++++++++++++++++-
 .../internal/repositories/auth_repository.go  | 21 ++++++++++++-
 backend/internal/repositories/interface.go    |  3 +-
 backend/internal/storage/migrations.go        |  2 +-
 backend/internal/storage/models.go            |  7 +++++
 6 files changed, 63 insertions(+), 7 deletions(-)

diff --git a/backend/internal/auth/jwt.go b/backend/internal/auth/jwt.go
index 1da5967..e836759 100644
--- a/backend/internal/auth/jwt.go
+++ b/backend/internal/auth/jwt.go
@@ -14,9 +14,9 @@ var jwtSecret = []byte(os.Getenv("JWT_SECRET"))
 
 func GenerateJWT(user storage.User) (string, error) {
 	token := jwt.NewWithClaims(jwt.SigningMethodHS512, jwt.MapClaims{
-		"id":    user.ID,
-		"email": user.Email,
-		"login": user.GithubLogin,
+		"id":        user.ID,
+		"email":     user.Email,
+		"github_id": user.GithubID,
 	})
 	tokenString, err := token.SignedString(jwtSecret)
 	if err != nil {
diff --git a/backend/internal/handlers/auth_handlers.go b/backend/internal/handlers/auth_handlers.go
index b3ef451..31dcf0e 100644
--- a/backend/internal/handlers/auth_handlers.go
+++ b/backend/internal/handlers/auth_handlers.go
@@ -1,6 +1,7 @@
 package handlers
 
 import (
+	"encoding/json"
 	"os"
 
 	"gitea.d3m0k1d.ru/d3m0k1d/d3m0k1d.ru/backend/internal/logger"
@@ -81,7 +82,35 @@ func (h *AuthHandlers) CallbackGithub(c *gin.Context) {
 		c.JSON(500, gin.H{"error": "exchange failed", "details": err.Error()})
 		return
 	}
+	client := h.config.Client(c.Request.Context(), token)
+	resp, err := client.Get("https://api.github.com/user")
+	if err != nil {
+		h.logger.Error("Get failed: " + err.Error())
+		c.JSON(500, gin.H{"error": "get request failed to github", "details": err.Error()})
+		return
+	}
+	var ghUser struct {
+		ID        int    `json:"id"`
+		Login     string `json:"login"`
+		Email     string `json:"email"`
+		AvatarURL string `json:"avatar_url"`
+	}
+	err = json.NewDecoder(resp.Body).Decode(&ghUser)
+	if err != nil {
+		h.logger.Error("Decode failed: " + err.Error())
+		c.JSON(500, gin.H{"error": "decode failed", "details": err.Error()})
+		return
+	}
+	isreg, err := h.repo.IsRegistered(c.Request.Context(), ghUser.ID)
+	if err != nil {
+		c.JSON(500, gin.H{"error": "database error", "details": err.Error()})
+		return
+	}
+	if isreg {
+		c.JSON(200, gin.H{"user": ghUser})
+		return
+	}
 
 	h.logger.Info("200 OK - token received")
-	c.JSON(200, gin.H{"token": token})
+	c.JSON(200, gin.H{"user": ghUser})
 }
diff --git a/backend/internal/repositories/auth_repository.go b/backend/internal/repositories/auth_repository.go
index d8dbb99..7ef2caf 100644
--- a/backend/internal/repositories/auth_repository.go
+++ b/backend/internal/repositories/auth_repository.go
@@ -5,6 +5,7 @@ import (
 	"database/sql"
 
 	"gitea.d3m0k1d.ru/d3m0k1d/d3m0k1d.ru/backend/internal/logger"
+	"gitea.d3m0k1d.ru/d3m0k1d/d3m0k1d.ru/backend/internal/storage"
 )
 
 type authRepository struct {
@@ -18,5 +19,23 @@ func NewAuthRepository(db *sql.DB) AuthRepository {
 		logger: logger.New(false),
 	}
 }
-func (a *authRepository) Test(ctx context.Context) {
+
+func (a *authRepository) Register(ctx context.Context, user storage.UserReg) error {
+	_, err := a.db.Exec(
+		"INSERT INTO users(email, github_id, github_login, avatar_url) VALUES(?, ?, ?, ?)",
+	)
+	if err != nil {
+		a.logger.Error("error scan: " + err.Error())
+		return err
+	}
+	a.logger.Info("User registered:", "email", user.Email)
+	return nil
+}
+
+func (a *authRepository) IsRegistered(ctx context.Context, github_id int) (bool, error) {
+	row := a.db.QueryRow("SELECT id FROM users WHERE github_id = ?", github_id)
+	if row != nil {
+		return true, nil
+	}
+	return false, nil
 }
diff --git a/backend/internal/repositories/interface.go b/backend/internal/repositories/interface.go
index ccd80e9..1c1cbcc 100644
--- a/backend/internal/repositories/interface.go
+++ b/backend/internal/repositories/interface.go
@@ -15,5 +15,6 @@ type PostRepository interface {
 }
 
 type AuthRepository interface {
-	Test(ctx context.Context)
+	Register(ctx context.Context, user storage.UserReg) error
+	IsRegistered(ctx context.Context, github_id int) (bool, error)
 }
diff --git a/backend/internal/storage/migrations.go b/backend/internal/storage/migrations.go
index 58f1a9d..50cd1c3 100644
--- a/backend/internal/storage/migrations.go
+++ b/backend/internal/storage/migrations.go
@@ -11,7 +11,7 @@ CREATE TABLE IF NOT EXISTS posts(
 CREATE TABLE IF NOT EXISTS users(
 	id INTEGER PRIMARY KEY AUTOINCREMENT,
 	email TEXT,
-	github_id TEXT,
+	github_id INTEGER,
 	github_login TEXT,
 	avatar_url TEXT
 );
diff --git a/backend/internal/storage/models.go b/backend/internal/storage/models.go
index 99c8de7..6a60251 100644
--- a/backend/internal/storage/models.go
+++ b/backend/internal/storage/models.go
@@ -25,3 +25,10 @@ type User struct {
 	GithubLogin string `db:"github_login"`
 	AvatarURL   string `db:"avatar_url"`
 }
+
+type UserReg struct {
+	Email       string `db:"email"`
+	GithubID    string `db:"github_id"`
+	GithubLogin string `db:"github_login"`
+	AvatarURL   string `db:"avatar_url"`
+}